Electric driving device and electric luggage case

Abstract

The utility model discloses an electric driving device and an electric luggage case, and belongs to the field of luggage cases, the electric driving device comprises a box body, a steering rod arranged at the upper part in the box body, a driving rod and a driving wheel which are arranged at the lower part in the box body, and a motor assembly for driving the steering rod and the driving rod to stretch up and down; in the 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 the 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 driving device can be externally connected with the luggage case to move as an independent device, and in the second state, the size of the electric driving device can be reduced to the maximum extent, so that the electric driving device is convenient to carry or put in the luggage case to be stored.

Description

Technical Field

[0001] This application relates to the field of luggage, and particularly to an electric drive device and an electric luggage. Background Art

[0002] A suitcase, also known as a travel case or rolling suitcase, is a box carried when traveling to store belongings such as clothing and daily necessities. Electric suitcases are improvements on traditional suitcases, allowing them to be ridden, thus reducing the burden of carrying them. However, during the research process of this application, the inventors discovered that the electric drive mechanism of existing electric suitcases is integrated into the suitcase itself, making it unsuitable for other types of suitcases. Therefore, there is a need to design an electric drive mechanism and an electric suitcase. Utility Model Content

[0003] This application provides an electric drive device and an electric luggage case to solve the problems mentioned in the background art.

[0004] An electric drive device includes a housing, a steering rod disposed in the upper part of the housing, a drive rod and a drive wheel disposed in the lower part of the housing, and a motor assembly for driving the steering rod and the drive rod to extend and retract vertically. The motor assembly includes a dual-output shaft motor, which is vertically arranged. The upper output end of the dual-output shaft motor is threadedly connected to the steering rod, and the lower output end of the dual-output shaft motor is threadedly connected to the drive rod. A sliding sleeve is fitted around the outer periphery of the dual-output shaft motor. The steering rod and the drive rod are respectively inserted into the two ends of the sliding sleeve and can slide along the length of the sliding sleeve. The outer walls of the steering rod and the drive rod are provided with limiting ribs, and the inner wall of the sliding sleeve is provided with limiting grooves adapted to the limiting ribs.

[0005] Preferably, the bottom of the steering rod and the top of the drive rod are provided with rotating connecting blocks, the two output shafts of the dual-output shaft motor are provided with lead screws with external threads, the rotating connecting blocks are provided with internal threads adapted to the external threads, and the steering rod and the drive rod are threadedly connected to the dual-output shaft motor through the rotating connecting blocks.

[0006] Preferably, the external threads of the lead screws on the output shafts at both ends of the dual-output-shaft motor are in opposite directions.

[0007] Preferably, the inner wall of the box is provided with a bearing seat, and the sliding sleeve is installed in the bearing seat and rotatably connected to the box body.

[0008] Preferably, the electric drive device further includes a controller and a connection component for detachably connecting to an external luggage compartment. The motor assembly is connected to the controller, and the electric drive device is connected to the external luggage compartment via the connection component and drives the external luggage compartment to move.

[0009] An electric drive device includes a housing, a steering rod disposed in the upper part of the housing, a drive rod and a drive wheel disposed in the lower part of the housing, and a motor assembly for driving the steering rod and the drive rod to extend and retract vertically. The motor assembly includes a sliding sleeve, a drive motor disposed on the sliding sleeve, and a gearbox. The steering rod and the drive rod are respectively inserted into the two ends of the sliding sleeve and can slide along the length of the sliding sleeve. The outer walls of the steering rod and the drive rod are provided with limiting ribs. The inner wall of the sliding sleeve is provided with limiting grooves adapted to the limiting ribs. The sliding sleeve is provided with lead screws that are threadedly connected to the steering rod and the drive rod respectively. The output end of the drive motor extends into the gearbox and is connected to a first bevel gear. The end of the lead screw is provided with a second bevel gear adapted to the first bevel gear. The drive motor is connected to the lead screw through the first bevel gear and the second bevel gear.

[0010] Preferably, the bottom of the steering rod and the top of the drive rod are provided with rotating connecting blocks, the outer periphery of the lead screw is provided with external threads, and the rotating connecting block is provided with internal threads adapted to the external threads. The steering rod and the drive rod are threadedly connected to the lead screw through the rotating connecting blocks.

[0011] Preferably, the inner wall of the box is provided with a bearing seat, and the sliding sleeve is installed in the bearing seat and rotatably connected to the box body.

[0012] Preferably, the electric drive device further includes a controller and a connection component for detachably connecting to an external luggage compartment. The motor assembly is connected to the controller, and the electric drive device is connected to the external luggage compartment via the connection component and drives the external luggage compartment to move.

[0013] An electric drive device includes a housing, a steering rod disposed in the upper part of the housing, a drive rod and a drive wheel disposed in the lower part of the housing, and a motor assembly for driving the steering rod and the drive rod to extend and retract vertically. The motor assembly includes a first electric push rod and a second electric push rod. The base of the first electric push rod is installed at the bottom of the housing, and the output shaft of the first electric push rod faces upward and is connected to the steering rod through a connector. The base of the second electric push rod is installed at the top of the housing, and the output shaft of the second electric push rod faces downward and is connected to the drive rod through a connector.

[0014] Preferably, the connector is provided with a bearing seat, and both the steering rod and the drive rod are mounted on the bearing seat. The drive rod is inserted into the steering rod and can slide along the length of the steering rod.

[0015] Preferably, the electric drive device further includes a controller and a connection component for detachably connecting to an external luggage compartment. The motor assembly is connected to the controller, and the electric drive device is connected to the external luggage compartment via the connection component and drives the external luggage compartment to move.

[0016] An electric drive device includes a housing, a steering rod disposed in the upper part of the housing, a drive rod and a drive wheel disposed in the lower part of the housing, and a motor assembly for driving the steering rod and the drive rod to extend and retract vertically. The motor assembly includes a drive motor fixed to the inner wall of the housing, a drive gear mounted on the output end of the drive motor, a first rack rotatably connected to the steering rod, and a second rack rotatably connected to the drive rod. The first rack and the second rack are disposed on both sides of the drive gear and mesh with the drive gear.

[0017] Preferably, the electric drive device further includes a controller and a connection component for detachably connecting to an external luggage compartment. The motor assembly is connected to the controller, and the electric drive device is connected to the external luggage compartment via the connection component and drives the external luggage compartment to move.

[0018] An electric drive device includes a housing, a steering rod disposed in the upper part of the housing, a drive rod and a drive wheel disposed in the lower part of the housing, and a motor assembly for driving the steering rod and the drive rod to extend and retract vertically. The motor assembly includes a drive motor and a scissor-type telescopic link connected to the output shaft of the drive motor. One end of the scissor-type telescopic link is connected to the steering rod, and the other end is connected to the drive rod.

[0019] Preferably, the inner wall of the box 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 side wall 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, 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.

[0020] Preferably, the electric drive device further includes a controller and a connection component for detachably connecting to an external luggage compartment. The motor assembly is connected to the controller, and the electric drive device is connected to the external luggage compartment via the connection component and drives the external luggage compartment to move.

[0021] An electric drive device includes a housing, a steering rod disposed in the upper part of the housing, a drive rod and a drive wheel disposed in the lower part of the housing, and a motor assembly for driving the steering rod and the drive rod to extend and retract vertically. The motor assembly includes a drive motor fixed to the inner wall of the housing, a first main gear mounted on the output end of the drive motor, a second main gear that is drivenly connected to the output end of the drive motor, a first rack connected to the steering rod, and a second rack connected to the drive rod. The first main gear is meshed with the first rack, and the second main gear is meshed with the second rack.

[0022] Preferably, a plurality of transmission gears are meshed between the first main gear and the first rack, and the number of the plurality of transmission gears is an even number.

[0023] Preferably, the electric drive device further includes a controller and a connection component for detachably connecting to an external luggage compartment. The motor assembly is connected to the controller, and the electric drive device is connected to the external luggage compartment via the connection component and drives the external luggage compartment to move.

[0024] Preferably, an electric drive device includes a housing, a steering rod disposed in the upper part of the housing, a drive rod and a drive wheel disposed in the lower part of the housing, and a motor assembly for driving the steering rod and the drive rod to extend and retract vertically. The motor assembly includes a drive motor fixed to the inner wall of the housing, a first transmission screw connected to the steering rod, and a second transmission screw connected to the drive rod. The first transmission screw and the second transmission screw are convectively connected, and the output end of the drive motor is connected to the first transmission screw or the second transmission screw.

[0025] Preferably, the motor assembly further includes an upper seat, a lower seat, and a slide rod disposed between the upper seat and the lower seat, wherein both the steering rod and the drive rod are provided with sliding blocks slidably mounted on the slide rod.

[0026] Preferably, the electric drive device further includes a controller and a connection component for detachably connecting to an external luggage compartment. The motor assembly is connected to the controller, and the electric drive device is connected to the external luggage compartment via the connection component and drives the external luggage compartment to move.

[0027] An electric suitcase includes the aforementioned electric drive device and a suitcase body, wherein the electric drive device is detachably connected to the suitcase body.

[0028] Preferably, the four ends of the bottom of the suitcase body are provided with wheels, and the wheels on the side of the bottom of the suitcase body near the electric drive device are omnidirectional wheels. The omnidirectional wheels are rotatably connected to the suitcase body, and the omnidirectional wheels have a first state of contact with the ground and a second state of being suspended relative to the ground.

[0029] As can be seen from the above technical solution, the electric drive device provided in this application has a first state in which the steering rod extends upward and the drive rod and drive wheel extend downward outside the box. In the first state, the electric drive device can be moved as an independent device connected to a suitcase. At the same time, it also has a second state in which the steering rod retracts downward and the drive rod and drive wheel retract upward inside the box. In the second state, the electric drive device can minimize its size, making it easy to carry or store inside a suitcase. Attached Figure Description

[0030] Figure 1 A side view of the first type of electric drive device provided in this application;

[0031] Figure 2 A perspective view of the first type of electric drive device provided in this application;

[0032] Figure 3 A side view of the first electric drive device provided in this application in its retracted state;

[0033] Figure 4 This is a schematic diagram showing the location of the controller;

[0034] Figure 5 A schematic diagram of the internal structure of the first electric drive device provided in this application;

[0035] Figure 6 A schematic diagram of the sliding sleeve in the first type of electric drive device provided in this application;

[0036] Figure 7 A perspective view of the bottom of the steering rod in the first type of electric drive device provided in this application;

[0037] Figure 8 A perspective view of the drive wheel and drive rod in the first type of electric drive device provided in this application;

[0038] Figure 9 A schematic diagram of a dual-output-shaft motor in the first type of electric drive device provided in this application;

[0039] Figure 10 A schematic diagram showing the connection between the steering rod, the dual-output-shaft motor, and the drive rod in the first type of electric drive device provided in this application;

[0040] Figure 11 A schematic diagram of the connecting components in the first type of electric drive device provided in this application;

[0041] Figure 12 A schematic diagram showing the connection between the electromagnetic lock and the sliding positioning seat in the first type of electric drive device provided in this application;

[0042] Figure 13 A schematic diagram showing the connection between the positioning pin and the elastic buckle in the first type of electric drive device provided in this application;

[0043] Figure 14 A perspective view of the second type of electric drive device provided in this application;

[0044] Figure 15 A perspective view of the second type of electric drive device provided in this application in its retracted state;

[0045] Figure 16 A schematic diagram of the internal structure of the second type of electric drive device provided in this application;

[0046] Figure 17 A schematic diagram showing the connection between the steering rod, the drive motor, and the drive rod in the second type of electric drive device provided in this application;

[0047] Figure 18 A schematic diagram of the internal structure of the gearbox in the second type of electric drive device provided in this application;

[0048] Figure 19 A schematic diagram showing the connection between the first bevel gear and the lead screw in the second type of electric drive device provided in this application;

[0049] Figure 20 A perspective view of the bottom of the steering rod in the second type of electric drive device provided in this application;

[0050] Figure 21 A perspective view of the drive wheel and drive rod in the second type of electric drive device provided in this application;

[0051] Figure 22 A schematic diagram of the internal structure of the third type of electric drive device provided in this application;

[0052] Figure 23 A schematic diagram showing the connection of the first electric push rod, the second electric push rod, the steering rod, and the drive rod in the third type of electric drive device provided in this application;

[0053] Figure 24 A schematic diagram showing the connection between the first electric push rod and the steering rod in the third type of electric drive device provided in this application;

[0054] Figure 25 A schematic diagram showing the connection between the second electric push rod and the drive rod in the third type of electric drive device provided in this application;

[0055] Figure 26 A schematic diagram of the internal structure of the fourth type of electric drive device provided in this application;

[0056] Figure 27 A schematic diagram showing the connection of the first rack, the second rack, the steering rod, and the drive rod in the fourth type of electric drive device provided in this application;

[0057] Figure 28 A schematic diagram of the internal structure of the fifth type of electric drive device provided in this application;

[0058] Figure 29 A schematic diagram of the interior of the housing in the fifth type of electric drive device provided in this application;

[0059] Figure 30 A schematic diagram showing the connection of the scissor-type telescopic link, steering rod, and drive rod in the fifth type of electric drive device provided in this application;

[0060] Figure 31 A perspective view of the sixth type of electric drive device provided in this application;

[0061] Figure 32 A schematic diagram of the internal structure of the sixth type of electric drive device provided in this application;

[0062] Figure 33 A perspective view of the steering rod and the first rack in the sixth type of electric drive device provided in this application;

[0063] Figure 34 A perspective view of the drive rod and the second rack in the sixth type of electric drive device provided in this application;

[0064] Figure 35 Side view of the drive motor, the first main gear, and the second main gear in the sixth type of electric drive device provided in this application;

[0065] Figure 36 A perspective view of the drive motor, the first main gear, and the second main gear in the sixth type of electric drive device provided in this application;

[0066] Figure 37 A perspective view of the connection between the first rack, the second rack, and the guide slide rod in the sixth type of electric drive device provided in this application;

[0067] Figure 38 A perspective view of the connecting components in the sixth type of electric drive device provided in this application;

[0068] Figure 39 A schematic diagram showing the positions of the locking element and the torsion spring in the sixth type of electric drive device provided in this application;

[0069] Figure 40 A perspective view of the connecting block in the sixth type of electric drive device provided in this application;

[0070] Figure 41 A perspective view of the seventh type of electric drive device provided in this application;

[0071] Figure 42 A schematic diagram of the internal structure of the seventh type of electric drive device provided in this application;

[0072] Figure 43 A perspective view showing the connection between the steering rod, drive motor, and drive rod in the seventh type of electric drive device provided in this application;

[0073] Figure 44 A schematic diagram showing the connection between the first transmission screw and the second transmission screw in the seventh type of electric drive device provided in this application;

[0074] Figure 45 A schematic diagram of the electric suitcase provided in this application;

[0075] Figure 46A perspective view of the main body of the electric suitcase provided in this application;

[0076] Figure 47 A schematic diagram showing the electric drive unit placed inside the main body of the electric suitcase provided in this application;

[0077] Figure 48 A schematic diagram showing the connection between the drive motor and the casters in the electric luggage provided in this application;

[0078] Figure 49 A schematic diagram of the omnidirectional wheels in the electric suitcase provided in this application.

[0079] Wherein: 10-box body, 101-controller, 102-power switch, 103-control switch, 104-battery, 105-battery slot, 106-bearing seat, 107-arc rotating groove, 108-arc waist hole, 109-slide, 110-electromagnet, 111-connecting slot, 112-connecting groove, 113-locking fastener, 114-handle, 115-locking end, 116-first pressing end, 118-operating end, 119-second pressing end, 120-connecting block, 121-locking groove, 122-handle, 123-handle groove, 2 0-Steering lever, 201-Steering handle, 202-Handle slot, 203-Control component, 30-Drive lever, 301-Wheel fork, 302-Limiting rib, 303-Rotating connecting block, 304-Limiting plane, 40-Drive wheel, 50-Dual output shaft motor, 501-Sliding sleeve, 502-Limiting groove, 503-Lead screw, 504-Drive motor, 505-Gearbox, 506-First bevel gear, 507-Second bevel gear, 508-First electric push rod, 509-Second electric push rod, 510-Connector, 511-Drive gear, 512 513-First rack, 514-Second rack, 515-Connecting rod, 516-Scissor-type telescopic linkage, 517-Arc-shaped rotating plate, 518-Rotating positioning component, 519-First main gear, 520-Second main gear, 521-Transmission belt, 522-Mounting plate, 523-Guide slide rod, 524-Transmission gear, 525-First transmission screw, 526-Second transmission screw, 527-Upper seat, 528-Lower seat, 529-Slide rod, 530-Sliding block, 531-Connecting gear, 60-Electromagnetic lock, 601- Sliding positioning seat, 602-positioning pin, 603-pressing component, 604-first sliding ramp, 605-elastic component, 606-second sliding ramp, 607-elastic buckle, 608-ring base, 609-elastic claw rod, 610-first buckle, 611-first stop, 612-second stop, 70-suitcase body, 701-wheel, 702-tensioning wheel, 703-guide wheel, 704-mounting seat, 705-torsion spring, 706-pull rope, 707-connecting socket, 708-connecting hole, 709-magnetic block, 710-electrical connector. DETAILED DESCRIPTION

[0080] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings, but this is not intended to limit the scope of protection of this utility model. The terms "front," "rear," "left," "right," "upper," and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "first" and "second" are only used to simplify the textual description to distinguish it from similar objects, and should not be construed as a specific sequential relationship.

[0081] See Figures 1 to 3 This application provides a first 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.

[0082] See Figures 5 to 10 The motor assembly includes a dual-shaft motor 50, which is vertically positioned with its two output ends facing upwards and downwards respectively. The upper output end of the dual-shaft motor 50 is threadedly connected to a steering rod 20. When the upper output end rotates, the steering rod 20 moves up and down relative to the dual-shaft motor 50. The lower output end of the dual-shaft motor 50 is threadedly connected to a drive rod 30. When the lower output end rotates, the drive rod 30 moves up and down relative to the dual-shaft motor 50. A sliding sleeve 501 is fitted around the outer periphery of the dual-shaft motor 50. The steering rod 20 and... The drive rods 30 are respectively inserted into the two ends of the sliding sleeve 501 and can slide along the length of the sliding sleeve 501. The outer walls of the steering rod 20 and the drive rod 30 are provided with limiting ribs 302. The inner wall of the sliding sleeve 501 is provided with limiting grooves 502 that are adapted to the limiting ribs 302. In this embodiment, the sliding sleeve 501 provides sliding guidance for the sliding of the steering rod 20 and the drive rod 30, and also limits the rotation of the steering rod 20 and the drive rod 30, so that when the steering rod 30 rotates, it can synchronously drive the drive rod 30 to rotate.

[0083] Both the bottom of the steering rod 20 and the top of the drive rod 30 are provided with rotating connecting blocks 303. Both ends of the dual-output shaft motor 50 are provided with lead screws 503 with external threads. The rotating connecting blocks 303 have internal threads adapted to the external threads. The steering rod 20 and the drive rod 30 are threadedly connected to the dual-output shaft motor 50 through the rotating connecting blocks 303. The external threads of the lead screws 503 on both ends of the dual-output shaft motor 50 are in opposite directions to allow the steering rod 20 and the drive rod 30 to move in opposite directions; that is, when the steering rod 20 moves upward, the drive rod 30 moves downward, and when the steering rod 20 moves downward, the drive rod 30 moves upward. The inner wall of the housing 10 is provided with a bearing seat 106, and the sliding sleeve 501 is installed in the bearing seat 106 and rotatably connected to the housing 10.

[0084] See Figure 2 and Figure 4 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. 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. A power switch 102 and a control switch 103 are provided on the outer wall of the housing 10. The power switch 102 controls the main power supply to be turned on and off, and the control switch 103 controls the operation of the motor assembly. The electric drive unit also includes a battery 104. A battery slot 105 adapted to the battery 104 is provided on the outer wall of the housing 10. The battery 104 is detachably inserted into the battery slot 105 and connected to the controller 101.

[0085] See Figures 11 to 13 The connecting components include an electromagnetic lock 60, a sliding positioning seat 601, and a positioning pin 602. The output end of the electromagnetic lock 60 is provided with a pressing member 603. The bottom of the pressing member 603 is provided with a first sliding inclined surface 604. The box body 10 is provided with a slide seat 109. The sliding positioning seat 601 is slidably installed on the slide seat 109. The positioning pin 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 is provided with an elastic member 605 between it and the slide seat 109. The sliding positioning seat 601 is provided with a second sliding inclined surface 606 that is adapted to the first sliding inclined surface 604. The first sliding inclined surface 604 and the second sliding inclined surface 606 abut against each other. The outer periphery of the positioning pin 602 is provided with an elastic buckle 607, and the elastic buckle 607 is slidably connected to the positioning pin 602.

[0086] The elastic latch 607 includes an annular base 608 sleeved around the periphery of the positioning pin 602 and a plurality of elastic claw bars 609 disposed on the annular base 608. The ends of the elastic claw bars 609 are provided with first latches 610. The annular base 608 can slide along the length of the positioning pin 602. The positioning pin 602 is inserted into the annular base 608 and abuts against the plurality of elastic claw bars 609. When the positioning pin 602 is not fully inserted into the annular base 608, the ends of the plurality of elastic claw bars 609 are in a converging-to-center state. When the positioning pin 602 is fully inserted into the annular base 608, the positioning pin 602 abuts against the ends of the plurality of elastic claw bars 609 and causes the ends of the plurality of elastic claw bars 609 to expand outward. The outer peripheral wall of the positioning pin 602 is provided with a plurality of first stops 611, which are used to limit the sliding space of the annular base 608. A second stop 612 is provided at the middle of the outer side of the elastic claw bars 609.

[0087] In the initial state, the electromagnetic lock 60 extends the collateral 603, causing the sliding positioning seat 601 to retract. The elastic element 605 is in a compressed state, and the annular base 608 abuts against the first stop 611. At this time, the positioning pin 602 is not fully inserted into the annular base 608, and the ends of the multiple elastic claw rods 609 are in a retracted state. Because the ends of the multiple elastic claw rods 609 are in a retracted state, it is easy to insert them into the corresponding connection holes on the external luggage box. During connection, the electromagnetic lock 60 retracts the collateral 603, and the sliding positioning seat 601 slides outward under the action of the elastic force released by the elastic element 605, and drives the positioning pin 602 to retract. 2. As the positioning pin 602 slides, it gradually inserts completely into the annular base 608. At this time, the ends of the multiple elastic claw bars 609 expand outward under the pressure of the positioning pin 602 and are engaged with the inner wall of the external luggage box by the first buckle 610, thus completing the connection. When disconnecting, the electromagnetic lock 60 extends the collateral 603 to drive the sliding positioning seat 601 to retract. At the same time, the positioning pin 602 changes from a fully inserted state to a partially inserted state. After the pressure of the positioning pin 602 is released, the ends of the multiple elastic claw bars 609 automatically return to a state of retraction towards the center. At this time, the connection with the external luggage box can be completed.

[0088] See Figure 2 The connecting component also includes an electromagnet 110 located on the back of the box 10. The electromagnet 110 has a strong magnetic attraction after being energized, which can further improve the connection strength between the electric drive device and the external suitcase. The connecting component also includes a connecting slot 111 located on the back of the box 10. The connecting slot 111 can be used to achieve a simple snap-fit ​​connection, which is convenient and effective.

[0089] A steering handle 201 is provided at the top of the steering lever 20, and a control component 203 is provided on the steering handle 201. The control component 203 is a controller controlled by a controller, such as a speed control throttle and a brake throttle for controlling the electric luggage compartment. The steering handle 201 is rotatably connected to the steering lever 20, that is, the steering handle 201 can switch between a horizontally unfolded state and a vertically folded state. The upper part of the housing 10 is provided with a handle groove 202 adapted to the steering handle 201, and the steering handle 201 can be inserted into the handle groove 202 for storage, further reducing the size of the electric drive device in the second state.

[0090] See Figure 14 and Figure 15 This application provides a second 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.

[0091] See Figures 16 to 21The motor assembly includes a sliding sleeve 501, a drive motor 504 mounted on the sliding sleeve 501, and a gearbox 505. The steering rod 20 and drive rod 30 are respectively inserted into both ends of the sliding sleeve 501 and can slide along the length of the sliding sleeve 501. The outer walls of both the steering rod 20 and drive rod 30 are provided with limiting ribs 302, and the inner wall of the sliding sleeve 501 is provided with limiting grooves 502 that are adapted to the limiting ribs 302. The sliding sleeve 501 contains lead screws that are threadedly connected to the steering rod 20 and drive rod 30 respectively. 503. The output end of the drive motor 504 extends into the gearbox 505 and is connected to a vertically arranged first bevel gear 506. The end of the lead screw 503 is provided with a horizontally arranged second bevel gear 507 adapted to the first bevel gear 506. The drive motor 504 is connected to the lead screw 503 through the first bevel gear 506 and the second bevel gear 507. When the drive 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, thereby driving the lead screw 503 to rotate. The bottom of the steering rod 20 and the top of the drive rod 30 are both provided with rotating connecting blocks 303. The outer circumference of the lead screw 503 is provided with external threads, and the inner circumference of the rotating connecting block 303 is provided with internal threads adapted to the external threads. The steering rod 20 and the drive rod 30 are threadedly connected to the lead screw 503 through the rotating connecting blocks 303. The inner wall of the housing 10 is provided with a bearing seat 106, and the sliding sleeve 501 is installed in the bearing seat 106 and rotatably connected to the housing 10.

[0092] The electric drive unit also includes a controller 101 and a connecting component for detachable connection with an external luggage compartment. The controller 101 is installed inside the housing 10. The motor assembly is connected to and controlled by the controller 101. The electric drive unit is connected to the external luggage compartment through the connecting component and drives the external luggage compartment to move. The structure of the connecting component and other components are the same as those of the first type of electric drive unit, and will not be described again.

[0093] See Figure 22This application provides a third 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.

[0094] See Figures 23 to 25 The motor assembly includes a first electric actuator 508 and a second electric actuator 509. The base of the first electric actuator 508 is installed at the bottom of the housing 10. The output shaft of the first electric actuator 508 faces upward and is connected to the steering rod 20 via a connector 510. The first electric actuator 508 drives the steering rod 20 to extend and retract vertically via the connector 510. The base of the second electric actuator 509 is installed at the top of the housing 10. The output shaft of the second electric actuator 509 faces downward and is connected to the drive rod 30 via the connector 510. The second electric actuator 509 drives the drive rod 30 to extend and retract vertically via the connector 510. The connector 510 is provided with a bearing seat 106. Both the steering rod 20 and the drive rod 30 are installed on the bearing seat 106 of the connector 510 to achieve left and right rotation relative to the connector 510. The drive rod 30 is inserted into the steering rod 20 and can slide along the length 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 provided with mutually compatible limiting planes 304, so that the steering rod 20 and the drive rod 30 can turn synchronously.

[0095] The electric drive unit also includes a controller 101 and a connecting component for detachable connection with an external luggage compartment. The controller 101 is installed inside the housing 10. The motor assembly is connected to and controlled by the controller 101. The electric drive unit is connected to the external luggage compartment through the connecting component and drives the external luggage compartment to move. The structure of the connecting component and other components are the same as those of the first type of electric drive unit, and will not be described again.

[0096] See Figure 26This application provides a fourth 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.

[0097] See Figure 26 and Figure 27 The motor assembly includes a drive motor 504 fixed to the inner wall of the housing 10, a drive gear 511 mounted on the output end of the drive motor 504, a first rack 512 rotatably connected to the steering rod 20, and a second rack 513 rotatably connected to the drive rod 30. The connection method between the drive motor 511 and the drive gear 511 is a common connection method in the art, which will not be described in detail here. Specifically, the upper end of the first rack 512 and the lower end of the second rack 513 are both connected to bearing seats 106. The steering rod 20 is mounted on the bearing seat 106 and rotatably connected to the first rack 512. The drive rod 30 is mounted on the bearing seat 106 and rotatably connected to the second rack 513. The first rack 512 and the second rack 513 are disposed on both sides of the drive gear 511 and mesh with the drive gear 511. When the drive gear 511 rotates, it drives the first rack 512 and the second rack 513 to move up or down respectively, thereby driving the steering rod 20 and the drive rod 30 to move up or down respectively. A connecting rod 514 connects the steering rod 20 and the drive rod 30. The two ends of the connecting rod 514 are inserted into the steering rod 20 and the drive rod 30 respectively. The inner sidewalls of the steering rod 20 and the drive rod 30 and the outer sidewall of the connecting rod 514 are provided with mutually compatible limiting planes 304, so that the steering rod 20 and the drive rod 30 can turn synchronously.

[0098] The electric drive unit also includes a controller 101 and a connecting component for detachable connection with an external luggage compartment. The controller 101 is installed inside the housing 10. The motor assembly is connected to and controlled by the controller 101. The electric drive unit is connected to the external luggage compartment through the connecting component and drives the external luggage compartment to move. The structure of the connecting component and other components are the same as those of the first type of electric drive unit, and will not be described again.

[0099] See Figure 28 This application provides a fifth 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.

[0100] See Figures 28 to 30 The motor assembly includes a drive motor 504 and a scissor-type telescopic link 515 connected to the output shaft of the drive motor 504. The scissor-type telescopic link 515 is a commonly used telescopic structure in the art and will not be described in detail here. One end of the scissor-type telescopic link 515 is connected to the steering rod 20, and the other end is connected to the drive rod 30. The drive rod 30 is inserted into the steering rod 20 and can slide along the length of the steering rod 20. When the drive motor 504 drives the scissor-type telescopic link 515 to extend, one end of the scissor-type telescopic link 515 drives the steering rod 20 to extend upward, while the other end of the scissor-type telescopic link 515 drives the drive rod 30 to extend downward. When the drive motor 504 drives the scissor-type telescopic link 515 to retract, one end of the scissor-type telescopic link 515 drives the steering rod 20 to retract downward, while the other end of the scissor-type telescopic link 515 drives the drive rod 30 to retract upward.

[0101] The drive rod 30 is inserted into the steering rod 20 and can slide along the length of the steering rod 20. In this embodiment, the two ends of the scissor-type telescopic link 515 are fixedly connected to the steering rod 20 and the drive rod 30. Therefore, when the steering rod 20 turns left or right, the scissor-type telescopic link 515 drives the drive rod 30 to turn synchronously. The inner wall of the box 10 is provided with an arc-shaped rotating groove 107. The back of the drive motor 504 is provided with an arc-shaped rotating plate 516 adapted to 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 adapted to 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 or right, the scissor-type telescopic connecting rod 515 drives the drive motor 504 and the arc-shaped rotating plate 516 to turn. The arc-shaped rotating groove 107 provides the rotation space for the arc-shaped rotating plate 516, and the arc-shaped waist hole 108 provides the rotation space for the rotation positioning rod 517 and limits the rotation angle.

[0102] The electric drive unit also includes a controller 101 and a connecting component for detachable connection with an external luggage compartment. The controller 101 is installed inside the housing 10. The motor assembly is connected to and controlled by the controller 101. The electric drive unit is connected to the external luggage compartment through the connecting component and drives the external luggage compartment to move. The structure of the connecting component and other components are the same as those of the first type of electric drive unit, and will not be described again.

[0103] See Figure 31 and Figure 32 This application provides a sixth 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.

[0104] See Figures 32 to 37The motor assembly includes a drive motor 504 fixed to the inner wall of the housing 10, a first main gear 518 mounted on the output end of the drive motor 504, a second main gear 519 connected to the output end of the drive motor 504, a first rack 512 connected to the steering rod 20, and a second rack 513 connected to the drive rod 30. The second main gear 519 is located below the first main gear 518. The second main gear 519 is connected to the output end of the drive motor 504 via a transmission belt 520. The first main gear 518 meshes with the first rack 512, thereby driving the steering rod 20 to move up and down. The second main gear 519 meshes with the second rack 513, thereby driving the drive rod 30 to move up and down.

[0105] The drive motor 504 is fixedly connected to two sets of guide slide rods 522 via a mounting plate 521. The two sets of guide slide rods 522 are symmetrically arranged on both sides of the first main gear 518 and the second main gear 519. The first rack 512 and the second rack 513 are slidably mounted on the two sets of guide slide rods 522 and can slide up and down along the guide slide rods 522. Multiple transmission gears 523 are meshed between the first main gear 5118 and the first rack 512. The multiple transmission gears 523 are located on the upper part of the first main gear 518. The multiple transmission gears 523 are all mounted on the mounting plate 521 and mesh with each other in sequence. The number of multiple transmission gears 523 is even. The last transmission gear 523 on the side away from the first main gear 518 meshes with the first rack 512. An even number of transmission gears are arranged in this way. 523, on the one hand, ensures that the rotation direction of the last transmission gear 523 on the side away from the first main gear 518 is consistent with that of the first main gear 518, and on the other hand, increases the outward travel of the steering rod 20. At the same time, the second main gear 519 also increases the outward travel of the drive rod 30. The last transmission gear 523 on the side away from the first main gear 518 is composed of two sub-transmission gears 524. The two sub-transmission gears 524 are parallel to each other and rotate synchronously. One sub-transmission gear 524 is meshed with other transmission gears 523, and the other sub-transmission gear 524 is meshed with the first rack 512. This arrangement prevents the first rack 512 from interfering with other transmission gears 523, thereby ensuring the normal lifting and lowering of the first rack 512.

[0106] The electric drive unit also includes a controller 101 and a connection component for detachably connecting to an external luggage box. The controller 101 is installed inside the housing 10. The motor assembly is connected to and controlled by the controller 101. The electric drive unit is connected to the external luggage box through the connection component and drives the external luggage box to move.

[0107] See Figures 38 to 40The 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.

[0108] See Figure 41 and Figure 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.

[0109] See Figures 42 to 44The 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 driving manner. The output end of the drive motor 504 is connected to either 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 seat 527, a lower seat 528, and a slide rod 529 disposed between the upper seat 527 and the lower seat 528. Both the steering rod 20 and the drive rod 30 are provided with sliding blocks 530 that are 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.

[0110] See 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.

[0111] See 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.

[0112] See Figure 46When 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 achieves rotatable connection with the suitcase body 70 through the connection block 120.

[0113] See Figures 47 to 49 The luggage body 70 has four wheels 701 at the bottom of its four ends. The two wheels on the bottom of the luggage body 70 near the electric drive device are omnidirectional wheels. The omnidirectional wheels are rotatably connected to the luggage body 70. The omnidirectional wheels have a first state of contact with the ground and a second state of being suspended relative to the ground.

[0114] 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.

[0115] When the main body of the suitcase 70 is not connected to the electric drive unit, the casters are in the first state, and the main body of the suitcase 70 can be used as a regular suitcase. At the same time, the electric drive unit, which is in the second state, can also be stored inside the main body of the suitcase 70. When the main body of the suitcase 70 is connected to the electric drive unit, the casters are in the second state, and the electric drive unit, which is in the first state, can drive the main body of the suitcase 70 to move.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Therefore, although the present utility model has been described 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 the present utility model. All technical solutions and improvements that do not depart from the spirit and scope of the present utility model should be covered within the scope of the claims of the present utility model.

Claims

1. An electric drive device, characterized in that, The device includes a housing, a steering rod located in the upper part of the housing, a drive rod and a drive wheel located in the lower part of the housing, and a motor assembly for driving the steering rod and the drive rod to extend and retract vertically. The motor assembly includes a dual-output shaft motor, which is vertically positioned. The upper output end of the dual-output shaft motor is threadedly connected to the steering rod, and the lower output end of the dual-output shaft motor is threadedly connected to the drive rod. A sliding sleeve is fitted around the outer periphery of the dual-output shaft motor. The steering rod and the drive rod are respectively inserted into the two ends of the sliding sleeve and can slide along the length of the sliding sleeve. The outer walls of the steering rod and the drive rod are provided with limiting ribs, and the inner wall of the sliding sleeve is provided with limiting grooves that are adapted to the limiting ribs.

2. 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 both provided with rotating connecting blocks. The output shafts at both ends of the dual-output shaft motor are provided with lead screws with external threads. The rotating connecting blocks are provided with internal threads that are compatible with the external threads. The steering rod and the drive rod are threadedly connected to the dual-output shaft motor through the rotating connecting blocks.

3. The electric drive device according to claim 2, characterized in that, The external threads of the lead screws on the output shafts at both ends of the dual-output-shaft motor are in opposite directions.

4. The electric drive device according to claim 1, characterized in that, The inner wall of the box is provided with a bearing seat, and the sliding sleeve is installed in the bearing seat and rotatably connected to the box.

5. The electric drive device according to claim 1, characterized in that, The electric drive unit also includes a controller and a connection component for detachable connection with an external luggage compartment. The motor assembly is connected to the controller, and the electric drive unit is connected to the external luggage compartment via the connection component to move the external luggage compartment.

6. An electric drive device, characterized in that, The device includes a housing, a steering rod located in the upper part of the housing, a drive rod and drive wheel located in the lower part of the housing, and a motor assembly for driving the steering rod and drive rod to extend and retract vertically. The motor assembly includes a sliding sleeve, a drive motor mounted on the sliding sleeve, and a gearbox. The steering rod and drive rod are respectively inserted into the two ends of the sliding sleeve and can slide along the length of the sliding sleeve. The outer walls of the steering rod and drive rod are provided with limiting ribs, and the inner wall of the sliding sleeve is provided with limiting grooves adapted to the limiting ribs. The sliding sleeve is provided with lead screws that are threadedly connected to the steering rod and drive rod respectively. The output end of the drive motor extends into the gearbox and is connected to a first bevel gear. The end of the lead screw is provided with a second bevel gear adapted to the first bevel gear. The drive motor is connected to the lead screw through the first bevel gear and the second bevel gear.

7. 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 both provided with rotating connecting blocks. The outer circumference of the lead screw is provided with external threads, and the rotating connecting block is provided with internal threads that are adapted to the external threads. The steering rod and the drive rod are threadedly connected to the lead screw through the rotating connecting blocks.

8. The electric drive device according to claim 6, characterized in that, The inner wall of the box is provided with a bearing seat, and the sliding sleeve is installed in the bearing seat and rotatably connected to the box.

9. The electric drive device according to claim 6, characterized in that, The electric drive unit also includes a controller and a connection component for detachable connection with an external luggage compartment. The motor assembly is connected to the controller, and the electric drive unit is connected to the external luggage compartment via the connection component to move the external luggage compartment.

10. An electric drive device, characterized in that, The device includes a housing, a steering rod located in the upper part of the housing, a drive rod and a drive wheel located in the lower part of the housing, and a motor assembly for driving the steering rod and the drive rod to extend and retract vertically. The motor assembly includes a first electric push rod and a second electric push rod. The base of the first electric push rod is installed at the bottom of the housing, and the output shaft of the first electric push rod faces upward and is connected to the steering rod through a connector. The base of the second electric push rod is installed at the top of the housing, and the output shaft of the second electric push rod faces downward and is connected to the drive rod through a connector.

11. The electric drive device according to claim 10, characterized in that, The connector is provided with a bearing seat, and both the steering rod and the drive rod are mounted on the bearing seat. The drive rod is inserted into the steering rod and can slide along the length of the steering rod.

12. The electric drive device according to claim 10, characterized in that, The electric drive unit also includes a controller and a connection component for detachable connection with an external luggage compartment. The motor assembly is connected to the controller, and the electric drive unit is connected to the external luggage compartment via the connection component to move the external luggage compartment.

13. An electric drive device, characterized in that, The device includes a housing, a steering rod disposed in the upper part of the housing, a drive rod and a drive wheel disposed in the lower part of the housing, and a motor assembly for driving the steering rod and the drive rod to extend and retract vertically. The motor assembly includes a drive motor fixed to the inner wall of the housing, a drive gear mounted on the output end of the drive motor, a first rack rotatably connected to the steering rod, and a second rack rotatably connected to the drive rod. The first rack and the second rack are disposed on both sides of the drive gear and mesh with the drive gear.

14. The electric drive device according to claim 13, characterized in that, The electric drive unit also includes a controller and a connection component for detachable connection with an external luggage compartment. The motor assembly is connected to the controller, and the electric drive unit is connected to the external luggage compartment via the connection component to move the external luggage compartment.

15. An electric drive device, characterized in that, The device includes a housing, a steering rod located in the upper part of the housing, a drive rod and a drive wheel located in the lower part of the housing, and a motor assembly for driving the steering rod and the drive rod to extend and retract vertically. The motor assembly includes a drive motor and a scissor-type telescopic link connected to the output shaft of the drive motor. One end of the scissor-type telescopic link is connected to the steering rod, and the other end is connected to the drive rod.

16. The electric drive device according to claim 15, characterized in that, The inner wall of the box is provided with an arc-shaped rotating groove, and the back of the drive motor is provided with an arc-shaped rotating plate adapted to the arc-shaped rotating groove. The side wall of the arc-shaped rotating groove is provided with an arc-shaped waist hole, and the arc-shaped rotating plate is provided with a rotating positioning rod adapted to 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.

17. The electric drive device according to claim 15, characterized in that, The electric drive unit also includes a controller and a connection component for detachable connection with an external luggage compartment. The motor assembly is connected to the controller, and the electric drive unit is connected to the external luggage compartment via the connection component to move the external luggage compartment.

18. An electric drive device, characterized in that, The device includes a housing, a steering rod disposed in the upper part of the housing, a drive rod and a drive wheel disposed in the lower part of the housing, and a motor assembly for driving the steering rod and the drive rod to extend and retract vertically. The motor assembly includes a drive motor fixed to the inner wall of the housing, a first main gear mounted on the output end of the drive motor, a second main gear that is drivenly connected to the output end of the drive motor, a first rack connected to the steering rod, and a second rack connected to the drive rod. The first main gear is meshed with the first rack, and the second main gear and the second rack are meshed with each other.

19. The electric drive device according to claim 18, characterized in that, The first main gear and the first rack are meshed with multiple transmission gears, and the number of the multiple transmission gears is an even number.

20. The electric drive device according to claim 18, characterized in that, The electric drive unit also includes a controller and a connection component for detachable connection with an external luggage compartment. The motor assembly is connected to the controller, and the electric drive unit is connected to the external luggage compartment via the connection component to move the external luggage compartment.

21. An electric drive device, characterized in that, The device includes a housing, a steering rod disposed in the upper part of the housing, a drive rod and a drive wheel disposed in the lower part of the housing, and a motor assembly for driving the steering rod and the drive rod to extend and retract vertically. The motor assembly includes a drive motor fixed to the inner wall of the housing, a first transmission screw connected to the steering rod, and a second transmission screw connected to the drive rod. The first transmission screw and the second transmission screw are connected in a driving connection. The output end of the drive motor is connected to the first transmission screw or the second transmission screw.

22. The electric drive device according to claim 21, characterized in that, The motor assembly also includes an upper seat, a lower seat, and a slide rod disposed between the upper seat and the lower seat. Both the steering rod and the drive rod are provided with sliding blocks that are slidably mounted on the slide rod.

23. The electric drive device according to claim 21, characterized in that, The electric drive unit also includes a controller and a connection component for detachable connection with an external luggage compartment. The motor assembly is connected to the controller, and the electric drive unit is connected to the external luggage compartment via the connection component to move the external luggage compartment.

24. An electric suitcase, characterized in that, Includes the electric drive device and the luggage body as described in any one of claims 1-23, wherein the electric drive device is detachably connected to the luggage body.

25. The electric suitcase according to claim 24, characterized in that, The luggage body has four wheels at its bottom. The wheels on the bottom of the luggage body near the electric drive device are omnidirectional wheels. The omnidirectional wheels are rotatably connected to the luggage body. The omnidirectional wheels have a first state of contact with the ground and a second state of being suspended relative to the ground.

Images