CN219904619U - Electric vehicle - Google Patents

Abstract

The utility model provides an electric vehicle which comprises a chassis, a front wheel assembly, a rear wheel assembly, a power supply assembly, a handle assembly and a seat assembly. The user needs to rotate the rear seat body to be parallel to the front seat body, and the first limiting piece and the second limiting piece are matched and locked, so that the position of the rear seat body is fixed with the position of the front seat body, the telescopic rod is rotated to be parallel to the steering piece through the joint seat, namely, the rear seat body and the front seat body are unfolded to 180 degrees, the telescopic rod is pulled out to be suitable for the length of the height of the user, and finally, the telescopic supporting piece is unfolded, so that the seat body can be normally used; when the electric vehicle needs to be folded, only the telescopic rod is required to be compressed to the shortest height, the telescopic rod is rotated towards the front seat body through the joint seat, the supporting frame is compressed, the seat body is reduced to be attached to the power supply assembly, the first limiting piece and the second limiting piece are in contact fit, the rear seat body is rotated to be attached to the front seat body along the front seat body, and the rear seat body is away from the side of the handle assembly.

Description

Electric vehicle

Technical Field

The utility model relates to the technical field of vehicles, in particular to an electric vehicle.

Background

Electric vehicles, i.e. electrically driven vehicles, are also known as electrically driven vehicles. Electric vehicles are classified into ac electric vehicles and dc electric vehicles. In general, an electric vehicle uses a battery as an energy source, and converts electric energy into mechanical energy to move through a controller, a power supply, wheels and other components, so as to control the speed of changing the rotational speed of the wheels. The share of electric vehicles in national economy is not very high. But accords with the national defined energy-saving and environment-friendly trend, greatly facilitates short-distance traffic, and plays an important role in national economy mainly through saving and protecting energy and environment.

Foldable electric vehicles have gained wide acceptance from users in terms of portability due to their portability. However, the folding vehicle in the current market still has the advantages that the folding vehicle is complex in structure when being folded, and the folding and unfolding mechanisms and auxiliary actions are too many, so that time and labor are wasted when folding, unfolding and folding are realized, the folding, unfolding and folding are too many in steps, the operation difficulty is too large, the accepting and popularization difficulty of middle-aged and elderly people is high, and the folding vehicle is not suitable for middle-aged and elderly consumer groups.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides an electric vehicle.

The utility model discloses an electric vehicle, comprising: the front seat body is rotationally connected with the rear seat body, a first limiting piece is arranged on the front seat body, a second limiting piece is arranged on the rear seat body, and the first limiting piece and the second limiting piece are matched for limiting when the rear seat body rotates to be parallel to the front seat body; the front wheel assembly comprises a bridge, front wheels and a steering piece, wherein the bridge is fixed on the front seat body, the steering piece is rotationally connected with the bridge, and the front wheels are fixed on the steering piece; the rear wheel assembly comprises a driving wheel and a brake wheel, and the driving wheel and the brake wheel are respectively positioned at two opposite sides of the rear seat body and are rotationally connected with the rear seat body; the seat assembly comprises a seat body and a supporting piece, one end of the supporting piece is connected with the chassis, the other end of the supporting piece is connected with the seat body, and the supporting piece can be folded; the power supply component is positioned between the rear seat body and the seat body, is fixedly connected with the rear seat body, and is also electrically connected with the driving wheel and the brake wheel; the handle assembly comprises a handle body, a telescopic rod and a joint seat, one end of the telescopic rod is connected with the joint seat, the other end of the telescopic rod is connected with the handle body, the joint seat is further connected with a steering piece, and the handle body is respectively and electrically connected with a driving wheel and a brake wheel.

Preferably, the support piece comprises two telescopic frames, each telescopic frame comprises a first rod body and a second rod body, the first rod bodies are crossed with the second rod bodies and are rotationally connected, one end of each first rod body is connected with the front seat body, the other end of each first rod body is connected with the seat body, one end of each second rod body is connected with the rear seat body, the other end of each second rod body is connected with the seat body, and the two telescopic frames are arranged in parallel.

Preferably, the front seat body is provided with a hollowed-out position communicated with two sides of the front seat body, the handle assembly further comprises a hinge piece, the hinge piece comprises a first section arm, a second section arm and a third section arm, one end of the first section arm is rotationally connected with the rear seat body, the other end of the first section arm is rotationally connected with the second section arm, the second section arm penetrates through the hollowed-out position and is rotationally connected with the third section arm, and the third section arm is rotationally connected with the telescopic rod.

Preferably, the rear seat body further comprises a rotating shaft, the rotating shaft is fixedly arranged on the rear seat body along the direction perpendicular to the driving wheel, and the rotating shaft is rotationally connected with the first section arm.

Preferably, the joint seat comprises a fixed seat and a connecting seat, the connecting seat is rotationally connected with the fixed seat, the fixed seat is provided with a first locking piece, the connecting seat is provided with a second locking piece, and when the connecting seat rotates to be collinear with the axis of the fixed seat, the first locking piece and the second locking piece are matched and locked.

Preferably, the front wheel comprises a first front wheel and a second front wheel, and the steering member comprises a steering member body, a bearing and two pekine bases; one end of the steering part body is connected with the joint seat, and the other end of the steering part body is rotationally connected with the bearing; the two culture medium bases are respectively positioned at two ends of the bearing and are rotationally connected with the bearing, and the two culture medium bases are also rotationally connected with the bridge; the first front wheel and the second front wheel are respectively arranged on the two Pelin seats.

Preferably, the rear wheel assembly further comprises an anti-tilting member, and the anti-tilting member is arranged on the rear seat body and is positioned at one end of the rear seat body far away from the front seat body.

Preferably, the front seat body is further provided with a handle, and the handle is located on one side of the front seat body.

Preferably, the drive wheel and/or the brake wheel is a rubber wheel.

Preferably, the front wheel, the driving wheel and the brake wheel are all inflation-free tires.

The utility model has the beneficial effects that: the electric motor car only needs three steps to accomplish the folding, also only need rotate the handlebar subassembly and buckle, seat subassembly is folding and chassis rotate folding promptly, and folding process only involves rotation and simple locating part cooperation operation, whole folding process easy operation just does not have laborious operation, is fit for middle-aged and elderly people's daily use.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

fig. 1 is a perspective view of an electric vehicle in an unfolded state in an embodiment;

FIG. 2 is a schematic view of a front seat structure according to an embodiment;

FIG. 3 is a schematic diagram showing the positional relationship between the rear chassis and the power module in the embodiment;

fig. 4 is a perspective view of an electric vehicle in a folded state in an embodiment;

FIG. 5 is a schematic diagram showing the positional relationship between the electric vehicle support and the chassis in an embodiment;

FIG. 6 is a schematic view of an electric vehicle in an embodiment;

fig. 7 is a schematic view of a front wheel assembly in an embodiment.

Reference numerals:

1-a chassis; 2-front wheel assembly; 3-rear wheel assembly; 4-a power supply assembly; 5-handle assembly; a 6-seat assembly;

11-a front seat body; 12-a rear seat body; 13-a first limiting piece; 14-a second limiting piece;

21-bridge frame; 22-front wheels; 23-turning piece;

31-a drive wheel; 32-brake wheels; 33-anti-roll members;

51-a handle bar body; 52-a telescopic rod; 53-joint seat; 54-hinge members;

61-a seat body; 62-a support;

111-hollowed-out space; 112-handle; 121-a rotating shaft;

221-a first front wheel; 222-a second front wheel; 231-a diverter body; 232-a bearing; 233-pelin holders;

531-fixing base; 532-connecting seats; 5311-a first locking member; 5321-a second locking member;

541-a first arm; 542-second pitch arm; 543-third arm;

621-telescoping rack; 6211-a first shaft; 6212-a second shaft.

Detailed Description

Various embodiments of the utility model are disclosed in the following drawings, in which details of the practice are set forth in the following description for the purpose of clarity. However, it should be understood that these practical details are not to be taken as limiting the utility model. That is, in some embodiments of the utility model, these practical details are unnecessary. Moreover, for the purpose of simplifying the drawings, some conventional structures and components are shown in the drawings in a simplified schematic manner.

It should be noted that all directional indications such as up, down, left, right, front, and rear … … in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture such as that shown in the drawings, and if the particular posture is changed, the directional indication is changed accordingly.

In addition, the descriptions of the "first," "second," and the like, herein are for descriptive purposes only and are not intended to be specifically construed as order or sequence, nor are they intended to limit the utility model solely for distinguishing between components or operations described in the same technical term, but are not to be construed as indicating or implying any relative importance or order of such features. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

For a further understanding of the present utility model, the following examples are set forth to illustrate, together with the drawings, the following detailed description of the utility model:

referring to fig. 1, 2 and 3, fig. 1 is a perspective view of an electric vehicle in an unfolded state, fig. 2 is a schematic view of a front seat structure, fig. 3 is a schematic view of a positional relationship between a rear seat and a power source assembly, the electric vehicle in this embodiment includes a chassis 1, a front wheel assembly 2, a rear wheel assembly 3, a power source assembly 4, a handle assembly 5 and a seat assembly 6, the chassis 1 is used for carrying the front wheel assembly 2, the rear wheel assembly 3, the power source assembly 4, the handle assembly 5 and the seat assembly 6, and the chassis 1 also plays a role of a pedal relative to a user; the front wheel assembly 2 and the handle assembly 5 are matched to play a role of guiding; the power supply assembly 4 is used for providing energy for the rear wheel assembly 3; the rear wheel assembly 3 is used for driving the chassis 1 to move; the seat assembly 6 provides a comfortable ride position for the user.

The chassis 1 comprises a front seat body 11 and a rear seat body 12, the front seat body 11 is rotationally connected with the rear seat body 12, a first limiting piece 13 is arranged on the front seat body 11, a second limiting piece 14 is arranged on the rear seat body 12, and when the rear seat body 12 rotates to be parallel to the front seat body 11, the first limiting piece 13 and the second limiting piece 14 are matched and limited; the front wheel assembly 2 comprises a bridge 21, front wheels 22 and a steering piece 23, wherein the bridge 21 is fixed on the front seat body 11, the steering piece 23 is rotatably connected with the bridge 21, and the front wheels 22 are fixed on the steering piece 23; the rear wheel assembly 3 comprises a driving wheel 31 and a braking wheel 32, and the driving wheel 31 and the braking wheel 32 are respectively positioned at two opposite sides of the rear seat body 12 and are rotationally connected with the rear seat body 12; the seat assembly 6 comprises a seat body 61 and a supporting member 62, one end of the supporting member 62 is connected with the chassis 1, the other end is connected with the seat body 61, and the supporting member 62 is foldable; the power supply component 4 is positioned between the rear seat body 12 and the seat body 61 and is fixedly connected with the rear seat body 12, and the power supply component 4 is also electrically connected with the driving wheel 31 and the brake wheel 32; the handle assembly 5 comprises a handle body 51, a telescopic rod 52 and a joint seat 53, one end of the telescopic rod 52 is connected with the joint seat 53, the other end of the telescopic rod 52 is connected with the handle body 51, the joint seat 53 is further connected with the steering member 23, and the handle body 51 is respectively electrically connected with the driving wheel 31 and the brake wheel 32.

In specific application, the user needs to rotate the rear seat body 12 to be parallel to the front seat body 11, and lock the first limiting piece 13 and the second limiting piece 14 in a matched manner, in this embodiment, the first limiting piece 13 adopts a limiting protrusion, the second limiting piece 14 adopts a limiting groove, and when in matched locking, the limiting protrusion is embedded into the limiting groove, so that the position of the rear seat body 12 is fixed with the position of the front seat body 11, the telescopic rod 52 is rotated to be collinear with the central axis of the steering piece 23 through the joint seat 53, namely, the rear seat body 12 and the front seat body 11 are stretched to 180 degrees and are fixed with the limiting sliding groove through the limiting protrusion, meanwhile, the telescopic rod 52 is rotated and pulled out to a length suitable for the height of the user, and finally, the foldable supporting piece 62 is stretched, so that the seat body 61 can be normally used, and the electric vehicle is in a use state.

Referring to fig. 4, fig. 4 is a perspective view of the folded state of the electric vehicle, when a user needs to fold the electric vehicle, only the telescopic rod 52 is required to be compressed to the shortest length, the telescopic rod 52 is rotated towards the front seat 11 through the joint seat 53, the supporting member 62 is folded, the seat body 61 is lowered to be attached to the power supply assembly 4, the first limiting member 13 and the second limiting member 14 are disengaged, the limiting protrusion is separated from the limiting groove, and the rear seat 12 is rotated along the front seat 11 to be attached to the front seat 11 far away from the side of the handle assembly 5, so that the electric vehicle is in the folded state.

Therefore, the electric vehicle can be folded by only three steps, namely, only the handlebar assembly is rotated and folded, the seat assembly 6 is folded and the chassis 1 is rotated and folded, and the folding process only involves the rotation and the simple matching operation of the limiting piece, so that the whole folding process is simple to operate and labor-free, and the electric vehicle is suitable for daily use of middle-aged and elderly people.

Further, referring to fig. 5, fig. 5 is a schematic diagram showing a positional relationship between the electric vehicle support and the chassis, the support 62 includes two expansion brackets 621, the expansion brackets 621 include a first rod body 6211 and a second rod body 6212, the first rod body 6211 is intersected with and rotationally connected to the second rod body 6212, one end of the first rod body 6211 is connected to the front seat body 11, the other end is connected to the seat body 61, one end of the second rod body 6212 is connected to the rear seat body 12, the other end is connected to the rear seat body 12, and the two expansion brackets 621 are arranged in parallel.

Thus, through the crossed and rotationally connected first rod body 6211 and second rod body 6212, after the first limiting piece 13 and the second limiting piece 14 are matched and locked, the seat body 61 can reach a fixed and firm state, and simultaneously after the first limiting piece 13 and the second limiting piece 14 are released from being matched, the first rod body 6211 and the second rod body 6212 also relatively rotate along with the relative rotation of the front seat body 11 and the rear seat body 12, finally the included angle between the first rod body 6211 and the second rod body 6212 gradually becomes larger, the folding state is achieved, and the function of both fixing and folding the seat body 61 is achieved through the matched relation between the supporting piece 62 and the rotationally connected front seat body 11 and the rear seat body 12.

Further, referring to fig. 6, fig. 6 is a schematic structural diagram of an electric vehicle, the front seat 11 has a hollow portion 111 communicating with two sides of the front seat 11, the handle assembly 5 further includes a hinge member 54, the hinge member 54 includes a first arm 541, a second arm 542 and a third arm 543, one end of the first arm 541 is rotatably connected to the rear seat 12, the other end of the first arm is rotatably connected to the second arm 542, the second arm 542 penetrates the hollow portion 111 and is rotatably connected to the third arm 543, and the third arm 543 is further rotatably connected to the telescopic rod 52.

In this way, the hinge member 54 is disposed on the handle assembly 5, so that the telescopic rod 52 is further fixed with the chassis 1, the safety of the electric vehicle during use is improved, and meanwhile, the first section arm 541, the second section arm 542 and the third section arm 543 can relatively rotate, and the folding of the electric vehicle is not affected on the premise of ensuring the stability of the telescopic rod 52 and the chassis 1.

Further, referring back to fig. 6, the rear seat 12 further includes a rotating shaft 121, the rotating shaft 121 is fixedly disposed on the rear seat 12 along a direction perpendicular to the driving wheel 31, and the rotating shaft 121 is rotatably connected to the first arm 541.

In this way, by providing the rotating shaft 121 on the rear seat 12, the relative rotation between the first arm 541 and the rear seat 12 is realized, and the smoothness of the rotation between the first arm 541 and the rear seat 12 is improved.

Further, referring back to fig. 4, the joint seat 53 includes a fixing seat 531 and a connecting seat 532, the connecting seat 532 is rotatably connected with the fixing seat 531, the fixing seat 531 has a first locking member 5311, the connecting seat 532 has a second locking member 5321, and when the connecting seat 532 rotates to be collinear with the axis of the fixing seat 531, the first locking member 5311 and the second locking member 5321 are cooperatively locked.

In this embodiment, the first locking member 5311 is selected as the buckle, the second locking member 5321 is selected as the buckle seat, the buckle can be fastened to the buckle seat, and the buckle seat can be detached from the buckle seat after the buckle rotates, so that the first locking member 5311 is arranged on the fixing seat 531, and the second locking member 5321 is arranged on the connecting seat 532, so that the telescopic rod 52 and the steering member 23 can rotate relatively, and a relatively fixed state can be achieved when the first locking member 5311 and the second locking member 5321 are matched and locked, and the running safety of a user is ensured.

Further, referring to fig. 7, fig. 7 is a schematic structural diagram of a front wheel assembly, the front wheel 22 includes a first front wheel 221 and a second front wheel 222, and the steering member 23 includes a steering member body 231, a bearing 232 and a two-pelargon seat 233; one end of the steering member body 231 is connected with the joint seat 53, and the other end is rotatably connected with the bearing 232; the two culture medium bases 233 are respectively positioned at two ends of the bearing 232 and are rotationally connected with the bearing 232, and the two culture medium bases 233 are also rotationally connected with the bridge 21; the first front wheel 221 and the second front wheel 222 are respectively disposed on the two-pelin seats 233.

In this way, the front wheel 22 is provided with two tires, namely the first front wheel 221 and the second front wheel 222, so that the electric vehicle is contacted with the bottom surface more stably, and is safer during steering, compared with the front wheel 22 provided with one tire, the front wheel 22 has the function of preventing falling down, in addition, the first front wheel 221 and the second front wheel 222 are connected with the Pelin seat 233 through the bearing 232, so that the first front wheel 221 and the second front wheel 222 keep the same direction, the out-of-control of the directions of the first front wheel 221 and the second front wheel 222 is avoided, the safety of users, especially middle-aged and elderly users, can control the normal running of the electric vehicle by applying a little force.

Further, referring back to fig. 6, the rear wheel assembly 3 further includes an anti-tilting member 33, and the anti-tilting member 33 is disposed on the rear seat 12 and located at an end of the rear seat 12 away from the front seat 11.

Therefore, the electric vehicle is prevented from tilting backwards when being started too fast, and the life safety of a user is guaranteed.

Further, referring back to fig. 2, the front seat 11 is further provided with a handle 112, and the handle 112 is located at one side of the front seat 11.

Therefore, when the electric vehicle is in a folded state, the electric vehicle is more convenient for a user to carry, and the portability of the electric vehicle is further improved.

Further, the driving wheel 31 and/or the brake wheel 32 are rubber wheels.

Therefore, the grip force of the electric vehicle is improved, and the service life of the tire is prolonged.

Further, the front wheel 22, the driving wheel 31, and the brake wheel 32 are all inflation-free tires.

Therefore, the conditions such as tire leakage and the like can be avoided, the maintenance frequency of the electric vehicle is reduced, the electric vehicle is friendly to daily use of the aged, and the experience of the user is improved.

In conclusion, the electric vehicle can be folded only by three steps, namely, only the handle bar assembly is rotated and folded, the seat assembly is folded and the chassis is rotated and folded, and the folding process only involves the rotation and simple limit piece cooperation operation, so that the whole folding process is simple to operate and labor-free, and the electric vehicle is suitable for daily use of middle-aged and elderly people.

The above is merely an embodiment of the present utility model, and is not intended to limit the present utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, or the like, which is within the spirit and principles of the present utility model, should be included in the scope of the claims of the present utility model.

Claims (10)

1. An electric vehicle, comprising: chassis (1), front wheel subassembly (2), rear wheel subassembly (3), power supply unit (4), handle subassembly (5) and seat subassembly (6), chassis (1) include preceding pedestal (11) and back pedestal (12), preceding pedestal (11) with back pedestal (12) rotate and be connected, be equipped with first locating part (13) on preceding pedestal (11), be equipped with second locating part (14) on back pedestal (12), back pedestal (12) rotate to with when preceding pedestal (11) are parallel, first locating part (13) with second locating part (14) cooperation is spacing; the front wheel assembly (2) comprises a bridge frame (21), front wheels (22) and a steering piece (23), wherein the bridge frame (21) is fixed on the front seat body (11), the steering piece (23) is rotationally connected with the bridge frame (21), and the front wheels (22) are fixed on the steering piece (23); the rear wheel assembly (3) comprises a driving wheel (31) and a braking wheel (32), wherein the driving wheel (31) and the braking wheel (32) are respectively positioned at two opposite sides of the rear seat body (12) and are rotationally connected with the rear seat body (12); the seat assembly (6) comprises a seat body (61) and a supporting piece (62), one end of the supporting piece (62) is connected with the chassis (1), the other end of the supporting piece is connected with the seat body (61), and the supporting piece (62) can be folded; the power supply assembly (4) is positioned between the rear seat body (12) and the seat body (61) and is fixedly connected with the rear seat body (12), and the power supply assembly (4) is also electrically connected with the driving wheel (31) and the brake wheel (32); the handle assembly (5) comprises a handle body (51), a telescopic rod (52) and a joint seat (53), one end of the telescopic rod (52) is connected with the joint seat (53), the other end of the telescopic rod is connected with the handle body (51), the joint seat (53) is further connected with a steering piece (23), and the handle body (51) is respectively electrically connected with the driving wheel (31) and the brake wheel (32).

2. The electric vehicle according to claim 1, characterized in that the supporting member (62) comprises two telescopic frames (621), the telescopic frames (621) comprise a first rod body (6211) and a second rod body (6212), the first rod body (6211) is crossed with and rotationally connected with the second rod body (6212), one end of the first rod body (6211) is connected with the front seat body (11), the other end is connected with the seat body (61), one end of the second rod body (6212) is connected with the rear seat body (12), the other end is connected with the seat body (61), and the two telescopic frames (621) are arranged in parallel.

3. The electric vehicle according to claim 1, wherein the front seat (11) has a hollow space (111) communicating with two sides of the front seat (11), the handle assembly (5) further comprises a hinge member (54), the hinge member (54) comprises a first arm (541), a second arm (542) and a third arm (543), one end of the first arm (541) is rotatably connected with the rear seat (12), the other end is rotatably connected with the second arm (542), the second arm (542) penetrates through the hollow space (111) and is rotatably connected with the third arm (543), and the third arm (543) is further rotatably connected with the telescopic rod (52).

4. An electric vehicle according to claim 3, wherein the rear seat (12) further comprises a rotating shaft (121), the rotating shaft (121) is fixedly arranged on the rear seat (12) along a direction perpendicular to the driving wheel (31), and the rotating shaft (121) is rotatably connected with the first arm (541).

5. The electric vehicle according to claim 1, characterized in that the joint seat (53) comprises a fixing seat (531) and a connecting seat (532), the connecting seat (532) is rotationally connected with the fixing seat (531), the fixing seat (531) is provided with a first locking member (5311), the connecting seat (532) is provided with a second locking member (5321), and when the connecting seat (532) rotates to be collinear with the axis of the fixing seat (531), the first locking member (5311) and the second locking member (5321) are cooperatively locked.

6. The electric vehicle of claim 1, characterized in that the front wheel (22) comprises a first front wheel (221) and a second front wheel (222), the steering member (23) comprises a steering member body (231), a bearing (232) and a bipenem mount (233); one end of the steering member body (231) is connected with the joint seat (53), and the other end of the steering member body is rotationally connected with the bearing (232); the two culture medium bases (233) are respectively positioned at two ends of the bearing (232) and are rotationally connected with the bearing (232), and the two culture medium bases (233) are also rotationally connected with the bridge frame (21); the first front wheel (221) and the second front wheel (222) are respectively arranged on the two penicillin seats (233).

7. The electric vehicle according to claim 1, characterized in that the rear wheel assembly (3) further comprises an anti-tilting member (33), the anti-tilting member (33) being provided on the rear housing (12) at an end of the rear housing (12) remote from the front housing (11).

8. The electric vehicle according to claim 1, characterized in that the front housing (11) is further provided with a handle (112), the handle (112) being located at one side of the front housing (11).

9. The electric vehicle according to claim 1, characterized in that the driving wheel (31) and/or the braking wheel (32) are rubber wheels.

10. The electric vehicle according to claim 1, characterized in that the front wheel (22), the driving wheel (31) and the braking wheel (32) are all inflation-free tires.