Electric scooter

Abstract

The utility model discloses an electric scooter, which relates to the technical field of scooters and at least comprises a moving part, a seat part, a backrest part, an armrest part, a control part and a rechargeable battery, the control part comprises a single-chip microcomputer electrically connected with the moving part, the moving part comprises a front wheel set and a rear wheel set, the rear wheel set comprises a rear wheel frame, rear wheels and a driving motor, the pair of rear wheels are rotatably installed on the rear wheel frame, the driving motor is installed on the rear wheel frame and is in transmission connection with the rear wheels, and the driving motor is electrically connected with the single-chip microcomputer. The front wheel set comprises a front wheel frame and front wheels, the pair of front wheels are rotatably installed on the front wheel frame, the front wheel frame is connected with the rear wheel frame, and the front wheels are omnidirectional wheels; the rechargeable battery is installed on the rear wheel frame and electrically connected with the single-chip microcomputer. The rechargeable battery of the electric scooter is arranged on the rear wheel frame, the space is reasonably utilized, the in-situ rotation function of the whole scooter can be achieved by controlling the rear wheel to rotate and being matched with the front wheel in the form of the omnidirectional wheel, and the electric scooter can enter and exit from an elevator conveniently and is good in safety.

Description

Technical Field

[0001] The utility model relates to the technical field of scooters, and particularly relates to an electric scooter. Background Art

[0002] The travel tools for disabled or elderly people with lower limb disabilities include scooters such as wheelchairs. Generally, the seats of scooters on the market are at a certain height from the ground, and the riders drive the scooters in a sitting position. With the development of scooter technology, riders can drive the scooters in a sitting position or a standing position. However, for the elderly, driving the scooter in a sitting position is safer.

[0003] For example, as shown in the Chinese utility model patent with the publication number CN 216861708 U, it discloses a new type of scooter, which includes a movable chassis, a seat and a connecting piece. One end of the connecting piece is connected to the movable chassis, and the other end of the connecting piece is connected to the seat. The connecting piece drives the seat to be in a low position or a high position on the movable chassis. There is an area on the movable chassis for the rider to place their legs forward. When the seat is in a low position above the movable chassis, the seat and the movable chassis provide a sitting-lying riding posture for the rider to directly drive the new type of scooter. In addition to retaining the traditional ways of driving the scooter in a sitting position and / or a standing position, the new type of scooter described in the utility model also adds a way of driving in a sitting-lying position, bringing a different experience to the rider and being beneficial to expanding the diversity of product usage scenarios.

[0004] In order to achieve battery life, many existing scooters are provided with a detachable battery structure. However, most wheelchair-type electric scooters on the market are like the above-mentioned patent, with the detachable battery set between the seat base and the footrest. In this way, the bottom space of the scooter is occupied greatly, and the overall length of the vehicle is relatively large, resulting in that when driving into a narrow space such as an elevator, it can only go straight in and out. It is relatively smooth and convenient to enter the elevator, but when getting out of the elevator, it needs to back out, which is inconvenient to operate and prone to collisions, and has poor safety performance. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an electric scooter with simple structure, convenient use and good safety, which can at least solve one of the above problems.

[0006] According to one aspect of the utility model, there is provided an electric scooter, including at least:

[0007] A moving part, the bottom of which contacts with an external support surface;

[0008] A seat part, installed on the moving part;

[0009] A backrest, installed on the seat part;

[0010] An armrest part, installed on the seat part;

[0011] A control part, installed on the moving part;

[0012] A rechargeable battery, detachably installed on the moving part;

[0013] The control part includes a single-chip microcomputer electrically connected to the moving part. The moving part includes a front wheel set and a rear wheel set. The rear wheel set includes a rear wheel frame, rear wheels and a drive motor. The rear wheels are a pair, and the pair of rear wheels are rotatably installed on the rear wheel frame. The drive motor is installed on the rear wheel frame and is in transmission connection with the rear wheels. The drive motor is electrically connected to the single-chip microcomputer. The front wheel set includes a front wheel frame and front wheels. The front wheels are a pair, and the pair of front wheels are rotatably installed on the front wheel frame. The front wheel frame is connected to the rear wheel frame. The front wheels are omnidirectional wheels;

[0014] The rechargeable battery is installed on the rear wheel frame and is electrically connected to the single-chip microcomputer;

[0015] The rear wheel frame is provided with a first limiting groove that is in limiting cooperation with the rechargeable battery. An insertion interface electrically connected to the single-chip microcomputer is arranged in the first limiting groove. A plug-in part that is matched with the insertion interface is arranged on the rechargeable battery.

[0016] Thus, the present utility model provides an electric scooter with a brand-new structure. The electric scooter is provided with a rechargeable battery, which can be used to supply power to the whole vehicle. The rechargeable battery is detachable, which is convenient for the user to take it down for charging and is easy to use; the setting of the moving part can realize the stable movement of the vehicle, and the front wheels configured in the omnidirectional wheel mode can realize the flexible steering function to meet the travel needs; more importantly, the rechargeable battery is arranged on the rear wheel frame, which reasonably utilizes the space and does not increase the space occupation of the whole vehicle. This enables the scooter of the present utility model to be designed shorter in the length direction. By controlling the rotation of the rear wheels and cooperating with the front wheels in the form of omnidirectional wheels, the whole vehicle can realize the in-situ rotation function. After testing, the rotation radius of this electric scooter can be in the range of 65 - 75 cm, that is, it can completely realize the in-situ turning function in a narrow space such as an elevator, which is convenient for entering and exiting the elevator and can better meet the use needs of the elderly, and has good safety.

[0017] In some embodiments, a limiting protrusion is arranged in the first limiting groove, and a second limiting groove that is in limiting cooperation with the limiting protrusion is formed on the outer wall of the rechargeable battery. Thus, it is convenient to realize the detachable and limited position of the rechargeable battery, and it is easy to use.

[0018] In some embodiments, the electric scooter further includes an expansion part, which is detachably mounted on the front wheel frame and located between the front wheel group and the rear wheel group. The expansion part is a storage basket and is located directly below the seat part. Thus, without affecting the overall length, the usable space can be expanded, and the structure is compact. The expansion part is in the form of a storage basket, which plays a role in storage and has strong practicability.

[0019] In some embodiments, the armrest part includes a first armrest mechanism, a second armrest mechanism, a control mechanism, and a fixed handle. The first armrest mechanism and the second armrest mechanism are respectively movably mounted on both sides of the seat part. The control mechanism is mounted on the first armrest mechanism, and the fixed handle is mounted on the second armrest mechanism. Thus, on the basis of a traditional scooter, the electric scooter of the present utility model adds a fixed handle. When in use, the user can hold the fixed handle with the hand that is not used to control the scooter, which can greatly improve the safety performance and avoid nervousness, especially suitable for scenarios such as uphill, downhill, or bumpy roads.

[0020] In some embodiments, the control mechanism includes a display and a direction controller electrically connected to the single-chip microcomputer. The first armrest mechanism includes a first armrest body, and both the display and the direction controller are mounted on the first armrest body. Thus, functions such as controlling the vehicle to move forward and backward, turn, and rotate in place can be achieved through the direction controller, and the operation is convenient.

[0021] In some embodiments, the second armrest mechanism includes a second armrest body, and the fixed handle extends obliquely or vertically upward based on the upper end surface of the second armrest body. Thus, it is convenient for the user to grip and conforms to ergonomics.

[0022] In some embodiments, the seat part includes a seat main body and a seat cushion detachably mounted on the seat main body. The seat main body is detachably mounted on the rear wheel frame, and the armrest part is mounted on the seat main body;

[0023] A guide groove and a connecting piece are provided on the rear wheel frame, and an installation piece cooperating with the connecting piece and a guide post in limit cooperation with the guide groove are provided at the bottom of the seat main body.

[0024] Thus, the seat cushion can be disassembled according to actual needs, such as for cleaning, replacement, etc.

[0025] In some embodiments, the backrest part includes a backrest main body and a backrest cushion detachably mounted on the backrest main body. The backrest main body is rotatably connected to the seat main body. Thus, the backrest main body can be folded relative to the seat main body, and the backrest cushion is detachable, meeting the usage requirements.

[0026] The beneficial effects of the present utility model:

[0027] The present utility model provides an electric scooter with a brand-new structure. The electric scooter is provided with a rechargeable battery, which can be used to supply power to the whole vehicle. The rechargeable battery is detachable, facilitating the user to take it down for charging, and is convenient to use;

[0028] The setting of the moving part can achieve the stable movement of the vehicle, and the front wheels configured in the omnidirectional wheel mode can achieve the flexible steering function, meeting the travel needs;

[0029] The rechargeable battery is arranged on the rear-wheel frame, making reasonable use of the space and not increasing the space occupation of the whole vehicle. This enables the scooter of the present utility model to be designed shorter in the length direction. By controlling the rotation of the rear wheels and cooperating with the front wheels in the form of omnidirectional wheels, the vehicle can achieve the function of rotating in place. After testing, the turning radius of this electric scooter can be in the range of 65 - 75 cm, that is, it can completely achieve the function of turning around in place in a narrow space such as an elevator, facilitating access to the elevator and better meeting the usage needs of the elderly, with good safety performance.

[0030] In addition, the electric scooter is added with a fixed handle on the basis of the traditional scooter. When in use, the user can hold the fixed handle with the hand that does not control the scooter, which can greatly increase the safety performance and avoid nervousness, especially suitable for scenarios such as uphill, downhill or bumpy roads.

[0031] In summary, the electric scooter has good safety performance and can meet the usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a three-dimensional structural schematic diagram of the electric scooter according to one embodiment of the present utility model;

[0033] Figure 2 is Figure 1 a three-dimensional structural schematic diagram of the electric scooter shown in another angle;

[0034] Figure 3 is Figure 1 a three-dimensional structural schematic diagram of the electric scooter shown in the front direction;

[0035] Figure 4 is Figure 3 a structural schematic diagram of the electric scooter shown after the second armrest mechanism is rotated upward;

[0036] Figure 5 is Figure 1 a structural schematic diagram of the electric scooter shown in the upward view direction;

[0037] Figure 6 is Figure 3 a simplified schematic diagram of the partial structure of the electric scooter shown;

[0038] Figure 7 is Figure 4 a simplified schematic diagram of a partial structure of the electric scooter shown;

[0039] Figure 8 is Figure 6 a simplified schematic diagram after the second armrest mechanism of the electric scooter shown rotates downward;

[0040] Figure 9 is Figure 1 a three-dimensional structure schematic diagram of the rear wheel group of the electric scooter shown;

[0041] Figure 10 is a simplified circuit system schematic diagram of the electric scooter according to one embodiment of the present invention.

[0042] Figures 1 to 10 Reference numerals in the drawings: 1 - moving part; 2 - seat part; 3 - backrest part; 4 - armrest part; 5 - control part; 6 - expansion part; 7 - rechargeable battery; 11 - front wheel group; 12 - rear wheel group; 21 - seat main body; 22 - seat cushion; 23 - connecting block; 24 - rotating shaft; 25 - adjusting handle; 31 - backrest main body; 32 - backrest cushion; 41 - first armrest mechanism; 42 - second armrest mechanism; 43 - control mechanism; 44 - fixed handle; 51 - single-chip microcomputer; 111 - front wheel frame; 112 - front wheel; 121 - rear wheel frame; 122 - rear wheel; 123 - drive motor; 231 - limit pin; 410 - limit chute; 411 - first armrest body; 421 - second armrest body; 431 - display; 432 - direction controller; 121a - first limit groove; 121b - socket; 121c - limit projection; 121d - guide groove; 1221e - connecting piece. Specific embodiments

[0043] The present invention will be further described in detail below with reference to the accompanying drawings.

[0044] Figures 1 to 10 Schematically shows an electric scooter according to an embodiment of the present invention.

[0045] As Figures 1 to 10 shown, the electric scooter at least includes:

[0046] The moving part 1, the bottom of which is in contact with the external support surface;

[0047] The seat part 2, which is installed on the moving part 1;

[0048] The backrest part 3, which is installed on the seat part 2;

[0049] The armrest part 4, which is installed on the seat part 2;

[0050] The control unit 5 is installed on the mobile unit 1;

[0051] The rechargeable battery 7 is detachably installed on the mobile unit 1;

[0052] The control unit 5 includes a single-chip microcomputer 51 electrically connected to the mobile unit 1. The mobile unit 1 includes a front wheel set 11 and a rear wheel set 12. The rear wheel set 12 includes a rear wheel frame 121, rear wheels 122, and a drive motor 123. The rear wheels 122 are a pair, and the pair of rear wheels 122 are rotatably installed on the rear wheel frame 121. The drive motor 123 is installed on the rear wheel frame 121 and is in transmission connection with the rear wheels 122. The drive motor 123 is electrically connected to the single-chip microcomputer 51. The front wheel set 11 includes a front wheel frame 111 and front wheels 112. The front wheels 112 are a pair, and the pair of front wheels 112 are rotatably installed on the front wheel frame 111. The front wheel frame 111 is connected to the rear wheel frame 121, and the front wheels 112 are omnidirectional wheels;

[0053] The rechargeable battery 7 is installed on the rear wheel frame 121 and is electrically connected to the single-chip microcomputer 51;

[0054] The rear wheel frame 121 is provided with a first limiting groove 121a for limiting and cooperating with the rechargeable battery 7. An insertion interface 121b electrically connected to the single-chip microcomputer 51 is arranged in the first limiting groove 121a. A plug-in member cooperating with the insertion interface 121b is arranged on the rechargeable battery 7.

[0055] It should be noted that the rechargeable battery 7 is a lithium battery. A limiting protrusion 121c is arranged in the first limiting groove 121a, and a second limiting groove for limiting and cooperating with the limiting protrusion 121c is formed on the outer wall of the rechargeable battery 7. Thus, it is convenient to realize the detachable and limited position of the rechargeable battery 7, and it is convenient to use.

[0056] As Figures 1 - 3 shown, the electric scooter further includes an expansion part 6. The expansion part 6 is detachably installed on the front wheel frame 111 and is located between the front wheel set 11 and the rear wheel set 12. The expansion part 6 is a storage basket, and the expansion part 6 is located directly below the seat part 2. Thus, without affecting the overall length, the use space can be expanded, and the structure is compact; the expansion part 6 is in the form of a storage basket, which plays a role in storage and has strong practicability.

[0057] As Figures 1 - 8 shown, the armrest part 4 of this embodiment at least includes:

[0058] The first armrest mechanism 41 is arranged on one side of the seat part 2;

[0059] The second armrest mechanism 42 is arranged on the other side of the seat part 2;

[0060] The control mechanism 43 is installed on the first armrest mechanism 41;

[0061] The fixed handle 44 is installed on the second armrest mechanism 42.

[0062] As Figure 2 shown, the control mechanism 43 includes a display 431 and a direction controller 432 electrically connected to the single-chip microcomputer 51. The first armrest mechanism 41 includes a first armrest body 411. Both the display 431 and the direction controller 432 are installed on the first armrest body 411. The functions such as moving the vehicle forward and backward, steering, and rotating in place can be controlled through the direction controller 432, which is convenient to operate. The display 431, in cooperation with various sensors and networking, can be used to display temperature, humidity, vehicle speed, and to implement multiple functions such as loading APPs, video calls, and voice calls.

[0063] As Figures 1 - 3 shown, the second armrest mechanism 42 includes a second armrest body 421. The fixed handle 44 extends obliquely or vertically upward based on the upper end surface of the second armrest body 421. Thus, it is convenient for the user to grip and conforms to ergonomics.

[0064] It should be noted that the fixed handle 44 of this embodiment is integrally connected to the second armrest body 421, and can be integrally formed by injection molding. And the fixed armrest extends obliquely upward based on the upper end surface of the second armrest body 421, and the inclined direction is forward.

[0065] As Figures 1 - 3 shown, the seat part 2 includes a seat main body 21 and a seat cushion 22 detachably installed on the seat main body 21. The seat main body 21 is detachably installed on the moving part 1. The first armrest mechanism 41 and the second armrest mechanism 42 are respectively installed on both sides of the seat main body 21.

[0066] It should be noted that a guiding groove 121d and a connecting piece 1221e are provided on the rear wheel frame 121. An installation part (not shown in the figure, which can be a square insertion tube and can be locked with bolts) matching the connecting piece 1221e and a guiding column (not shown in the figure, which can be a square conduit) for limiting cooperation with the guiding groove 121d are provided at the bottom of the seat main body 21. Thus, the seat cushion 22 can be disassembled according to actual needs, such as for cleaning, replacement, etc. The whole vehicle can also be disassembled. For example, the overall structure composed of the whole seat part 2, the armrest part 4, and the backrest part 3 can be disassembled, which is convenient for loading into the trunk of a car.

[0067] It should be noted that a connecting block 23 is provided on the side of the seat body 21. The first armrest body 411 and the second armrest body 421 are rotatably connected to the connecting block 23 through a rotating shaft 24. The first armrest body 411 and the second armrest body 421 are provided with limiting sliding grooves 410, and the connecting block 23 is provided with limiting pin shafts 231 that are slidably matched with the limiting sliding grooves 410. The first armrest body 411 and the second armrest body 421 are basically the same in overall shape and are both C-shaped. The limiting sliding grooves 410 are provided at the bottom of the first armrest body 411 and the second armrest body 421 and are opened on the inner side wall. Thus, the rotation of the first armrest mechanism 41 and the second armrest mechanism 42 can be realized to meet various usage requirements, and the limiting of the first armrest body 411 or the second armrest body 421 is realized by the cooperation of the limiting sliding groove 410 and the limiting pin shaft 231.

[0068] As Figures 6 - 8 shown, through the cooperation of the limiting sliding groove 410 and the limiting pin shaft 231, the first armrest body 411 and the second armrest body 421 of this embodiment can have at least three usage states:

[0069] Specifically, the second armrest body 421 will be described: Assume that the straight line in the horizontal direction is L1, and the straight line where the upper end surface of the second armrest body 421 is located is L2, and the included angle between the two is A.

[0070] Then, preferably, in the normal use state, the angle of A is 0 - 5°, as Figure 3 and Figure 6 shown;

[0071] When the second armrest body 421 is flipped backward, the angle of A is preferably 75 - 95°, as Figure 4 and Figure 7 shown; The beneficial effect of this is: it is convenient for users to get on and off the vehicle. When the user needs to get on and off the vehicle, the first armrest mechanism 41 or the second armrest mechanism 42 can be rotated and flipped backward to get on the vehicle from the side of the car, which is convenient and safe.

[0072] When the second armrest body 421 is pressed forward, the angle of A is preferably 15 - 18°. The beneficial effect of this is: when the user rides on this scooter for office work or dining, since the fixed armrest is generally higher than the tabletop, when moving forward directly, it will be blocked by the table board, resulting in too large a distance between the user and the tabletop, making it impossible to dine or work, etc. In order to adapt to these scenarios, the user can tilt the first armrest mechanism 41 and the second armrest mechanism 42 downward so that the front end of the armrest is lower than the table board, and easily enter the appropriate position to dine and work in the most comfortable state.

[0073] It should be noted that for the convenience of the above state switching, an adjustment handle 25 which is in limit cooperation with the rotating shaft 24 is also provided on the connecting block 23. The adjustment handle 25 can be movably connected to the connecting block 23 in a hinged manner, and the bottom end can be in limit cooperation with the rotating shaft 24 in a dial manner. Multiple gear positions grooves corresponding to the dial can be opened on the rotating shaft 24, and this structure can cooperate to achieve the positioning and locking effect.

[0074] As Figures 1 - 3 shown, the backrest 3 includes a backrest main body 31 and a backrest soft body 32 detachably mounted on the backrest main body 31. The backrest main body 31 and the seat main body 21 are rotatably connected by a hinged manner. Thus, the backrest main body 31 can be folded relative to the seat main body 21, and the backrest soft body 32 is detachable to meet the use requirements. The backrest soft body 32 or the seat soft body 22 can be detachably connected to the backrest main body 31 or the seat main body 21 by means of Velcro.

[0075] As Figures 1 - 3 shown, the moving part 1 includes a front wheel group 11 and a rear wheel group 12. The rear wheel group 12 includes a rear wheel frame 121, rear wheels 122 and a driving motor 123. The rear wheels 122 are a pair, and the pair of rear wheels 122 are rotatably mounted on the rear wheel frame 121. The driving motor 123 is mounted on the rear wheel frame 121 and is in transmission connection with the rear wheels 122. The driving motor 123 is electrically connected to the single-chip microcomputer 51. The front wheel group 11 includes a front wheel frame 111 and front wheels 112. The front wheels 112 are a pair, and the pair of front wheels 112 are rotatably mounted on the front wheel frame 111. The front wheel frame 111 is connected to the rear wheel frame 121, and the front wheels 112 are omnidirectional wheels. Thus, smooth movement can be achieved, and with the front wheels 112 configured in an omnidirectional wheel manner, a flexible steering function can be realized to meet the travel requirements.

[0076] It should be noted that the frame part can adopt the frame structure in the prior art. For example, the front wheels 112 can be commercially available Mecanum wheels or Omni wheels (universal tires) developed by Mazda Motor Corporation.

[0077] The present utility model provides an electric scooter with a brand-new structure. The electric scooter is provided with a rechargeable battery 7 which can be used to supply power to the whole vehicle. The rechargeable battery 7 is detachable, which is convenient for the user to take it down for charging and is easy to use;

[0078] The setting of the moving part 1 can achieve the smooth movement of the vehicle, and with the front wheels 112 configured in an omnidirectional wheel manner, a flexible steering function can be realized to meet the travel requirements;

[0079] The rechargeable battery 7 is arranged on the rear-wheel frame 121, making reasonable use of the space and not increasing the space occupation of the whole vehicle. This enables the scooter of the present utility model to be designed shorter in the length direction. By controlling the rotation of the rear wheel 122 and cooperating with the front wheel 112 in the form of an omnidirectional wheel, the whole vehicle can achieve the function of rotating in place. After testing, the turning radius of this electric scooter can be in the range of 65 - 75 cm, that is, it can completely achieve the function of turning around in place in a narrow space such as an elevator, facilitating entry and exit from the elevator, and better meeting the usage needs of the elderly with good safety performance.

[0080] In addition, a fixed handle 44 is added to this electric scooter on the basis of the traditional scooter. During use, the user can hold this fixed handle 44 with the hand that is not used to control the scooter, which can greatly improve the safety performance and avoid nervousness, especially suitable for scenarios such as uphill, downhill or bumpy sections.

[0081] In summary, this electric scooter has good safety performance and can meet the usage needs.

[0082] The above are only some embodiments of the present utility model. For those of ordinary skill in the art, without departing from the creative concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model.

Claims

1. An electric scooter, characterized in that: At least: A movable part (1), the bottom of which contacts with an external supporting surface; A seat portion (2) mounted on the moving portion (1); A backrest portion (3) mounted on the seat portion (2); An armrest portion (4) mounted on the seat portion (2); A control unit (5) installed on the moving unit (1); A rechargeable battery (7) detachably mounted on the moving part (1); The control unit (5) comprises a single chip computer (51) electrically connected to the moving unit (1); the moving unit (1) comprises a front wheel group (11) and a rear wheel group (12); the rear wheel group (12) comprises a rear wheel frame (121), a rear wheel (122) and a drive motor (123); the rear wheels (122) are a pair, the pair of rear wheels (122) are rotatably mounted on the rear wheel frame (121), and the drive motor (123) is mounted on the rear wheel frame (121). The front wheel frame (121) is connected to the rear wheel frame (122) in a transmission manner, the driving motor (123) is electrically connected to the single chip computer (51), the front wheel group (11) comprises a front wheel frame (111) and a front wheel (112), the front wheels (112) are a pair, the pair of front wheels (112) are rotatably mounted on the front wheel frame (111), the front wheel frame (111) is connected to the rear wheel frame (121), and the front wheels (112) are omnidirectional wheels; The rechargeable battery (7) is installed on the rear wheel frame (121) and is electrically connected to the single chip computer (51); The rear wheel frame (121) is provided with a first limiting groove (121a) for limiting the position of the rechargeable battery (7); a plug interface (121b) electrically connected to the single chip computer (51) is provided in the first limiting groove (121a); ​​and a plug connector matching the plug interface (121b) is provided on the rechargeable battery (7).

2. The electric scooter according to claim 1, characterized in that: A limiting protrusion (121c) is arranged in the first limiting groove (121a), and a second limiting groove that cooperates with the limiting protrusion (121c) is formed on the outer wall of the rechargeable battery (7).

3. The electric scooter according to claim 1, characterized in that: The vehicle further comprises an expansion portion (6), wherein the expansion portion (6) is detachably mounted on the front wheel frame (111) and is located between the front wheel assembly (11) and the rear wheel assembly (12); the expansion portion (6) is a storage basket, and the expansion portion (6) is located directly below the seat portion (2).

4. The electric scooter according to claim 1, characterized in that: The armrest portion (4) comprises a first armrest mechanism (41), a second armrest mechanism (42), a control mechanism (43) and a fixed handle (44); the first armrest mechanism (41) and the second armrest mechanism (42) are respectively movably mounted on two sides of the seat portion (2); the control mechanism (43) is mounted on the first armrest mechanism (41); and the fixed handle (44) is mounted on the second armrest mechanism (42).

5. The electric scooter according to claim 4, characterized in that: The control mechanism (43) comprises a display (431) and a direction controller (432) electrically connected to the single-chip computer (51); the first armrest mechanism (41) comprises a first armrest body (411); and the display (431) and the direction controller (432) are both mounted on the first armrest body (411).

6. The electric scooter according to claim 5, characterized in that: The second armrest mechanism (42) comprises a second armrest body (421), and the fixed handle (44) extends upwardly in an inclined manner or vertically based on the upper end surface of the second armrest body (421).

7. The electric scooter according to claim 6, characterized in that: The first armrest body (411) and the second armrest body (421) are rotatably connected to the seat portion (2).

8. The electric scooter according to any one of claims 1 to 7, characterized in that: The seat portion (2) comprises a seat body (21) and a seat soft body (22) detachably mounted on the seat body (21); the seat body (21) is detachably mounted on the rear wheel frame (121); and the armrest portion (4) is mounted on the seat body (21); The rear wheel frame (121) is provided with a guide groove (121d) and a connecting piece (1221e), and the bottom of the seat body (21) is provided with a mounting piece matched with the connecting piece (1221e) and a guide column matched with the guide groove (121d) in a limiting manner.

9. The electric scooter according to claim 8, characterized in that: The backrest portion (3) comprises a backrest body (31) and a backrest soft body (32) detachably mounted on the backrest body (31); the backrest body (31) is rotatably connected to the seat body (21).

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