CN113184096B

CN113184096B - Two-wheeled through shaft balance car

Info

Publication number: CN113184096B
Application number: CN202110513219.1A
Authority: CN
Inventors: 臧传美
Original assignee: Yongkang Xiaolang Technology Co Ltd
Current assignee: Yongkang Xiaolang Technology Co Ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2022-10-21
Anticipated expiration: 2041-05-11
Also published as: CN113184096A

Abstract

The invention discloses a two-wheel through shaft balance car, which is characterized in that through shafts of an integrated structure are additionally arranged in a car body of the balance car, the overall structural strength of the balance car is enhanced, the connection strength of a first car body and a second car body is improved, the bearing capacity of the balance car is improved, the deformation of the connection part of the first car body and the second car body is avoided, and the safe operation of the balance car is ensured; the control system is moved out of the vehicle body; the control circuit board is arranged on the wheels and forms a modular structure with the wheels, and when the control circuit board is used, the wheels of the modular balance car can be directly assembled and electrically connected with the car body, so that the mounting process is simplified, and the assembly efficiency is improved; the detection circuit board is independent, the detection circuit board and the posture detection sensor on the detection circuit board are arranged on the upper surface of the upper shell, the detection circuit board is closer to the feet of a person, and the original control change of the feet of the person can be detected, so that the inclination detection of the vehicle body can reflect the control of the human body more truly, and the balance vehicle can achieve the control purpose expected by a driver.

Description

Two-wheeled through shaft balance car

Technical Field

The invention relates to the technical field of balance cars, in particular to a two-wheel through-axle balance car.

Background

Two-wheeled balance vehicles, which have been developed rapidly in these years, include early purely mechanical balance vehicles and later developed electrodynamic balance vehicles, which are used for both sports and leisure and entertainment, and are very popular with people of all countries. The electric balance car needs a control system to control the starting, running speed, advancing direction and the like of the balance car, and the control systems of most of the existing two-wheeled electric balance cars are all positioned in a balance car shell, so that the mounting steps of the balance car are complicated, the modularized rapid mounting cannot be realized, and the production cost of the balance car is high; simultaneously, current electrodynamic balance car exists the not enough problem of structural strength, can't bear the user of great weight.

Disclosure of Invention

The invention aims to solve the problems of complex mounting steps and insufficient structural strength of a balance car in the prior art, and provides a two-wheel through-axle balance car.

The purpose of the invention is realized by adopting the following technical scheme:

a two-wheeled through-axle balance car comprises wheels, a car body and a control system, wherein the car body comprises a first car body and a second car body which are arranged side by side from left to right, the wheels comprise first wheels correspondingly connected with the first car body and second wheels correspondingly connected with the second car body,

the first end of the through shaft extends into the first vehicle body and is fixedly connected with a first motor shaft of the first wheel, the second end of the through shaft extends into the second vehicle body and is fixedly connected with a second motor shaft of the second wheel, and at least one of the first vehicle body and the second vehicle body is rotatably connected with the through shaft;

wherein, the automobile body includes epitheca and inferior valve, control system includes control circuit board and detection circuitry board, be equipped with posture detection sensor on the detection circuitry board, control circuit board sets up first wheel and/or on the second wheel, detection circuitry board sets up on the epitheca, control circuit board with the detection circuitry board electricity is connected.

Preferably, the upper surface of the upper shell is provided with a circuit board mounting groove, and the detection circuit board is sunk in the circuit board mounting groove and electrically connected with the control circuit board.

Preferably, the detection circuit board is also provided with a standing person detection switch,

the automobile body includes the footboard, the footboard with the upper surface swing joint of epitheca is located station people detection switch on the epitheca is located the footboard with between the epitheca, and with the trigger piece of footboard lower surface corresponds the setting.

Preferably, the upper surface of the upper shell is provided with pedal mounting grooves; the circuit board mounting groove is positioned in the pedal mounting groove; a spring mounting hole is formed in the pedal mounting groove, a spring is arranged in the spring mounting hole, one end of the spring abuts against the inner surface of the pedal, and the other end of the spring abuts against the spring mounting hole.

Preferably, the inner surface of the pedal is provided with a spring connecting column, the spring connecting column corresponds to the spring mounting hole in position, and the diameter of the spring connecting column is smaller than that of the spring.

Preferably, the inner surfaces of the pedals are respectively provided with a movable connecting column, and movable mounting holes are formed in the pedal mounting grooves; the movable connecting column comprises a connecting movable part and a clamping head, the clamping head is positioned below the movable mounting hole, and the diameter of the clamping head is larger than that of the movable mounting hole; the diameter of the connecting movable part is smaller than that of the movable mounting hole, and the connecting movable part moves up and down relative to the movable mounting hole.

Preferably, the inner surfaces of the pedals are provided with sealing edges, and the shapes of the sealing edges are matched with the shapes of the circuit board mounting grooves; the length of the sealing edge is greater than the maximum distance between the pedal and the circuit board mounting groove, and the sealing edge extends into the circuit board mounting groove and is tightly matched with the side wall of the circuit board mounting groove.

Preferably, the wheel comprises a hub motor, the hub motor comprises a hub, a stator, a rotor and a motor shaft, the hub is provided with an opening on one side and a first accommodating cavity, the stator and the rotor are located in the first accommodating cavity, an inner end cover is arranged at the opening of the hub and fixedly connected with the hub, the motor shaft penetrates through the hub and penetrates out of one side of the inner end cover, and the control circuit board is fixed on the motor shaft through an installation part;

an outer end cover is arranged on the outer side of one end, far away from the vehicle body, of the hub, and the control circuit board is located between the outer end cover and the hub; or

The control circuit board is positioned in the first accommodating cavity; or

The control circuit board is positioned on one side of the inner end cover close to the vehicle body and is fixed on the penetrating end of the motor shaft.

Preferably, the installation department includes fixing base and mounting, control circuit board fixes on the fixing base, be equipped with in the middle of the fixing base with the first flat mouthful of groove of motor shaft adaptation makes the fixing base with the motor shaft is static relatively, and passes through the mounting with motor shaft fixed connection.

Preferably, when the control circuit board is located between the outer end cover and the hub, the fixing seat includes a first convex portion, and the first flat slot is opened on the first convex portion; the outer end of the motor shaft is provided with a flat transverse part and a first step, a gap is formed between the first step and the end face of the hub, the fixing seat is sleeved with the transverse part through the first flat opening groove and abuts against the first step under the action of the fixing part, and the fixing seat keeps a distance from the end face of the hub.

Preferably, the fixing seat includes a first concave portion, the first concave portion is disposed around the first convex portion and is recessed toward the hub, and the annular control circuit board is fixedly mounted in the first concave portion.

Preferably, a wire passing through hole is formed in the motor shaft, and a first wire harness of the control circuit board enters the vehicle body through the wire passing through hole.

Preferably, the outer end cover is detachably connected with the outer end face of the hub and covers the control circuit board; and a light emitting lamp strip is further arranged between the outer end cover and the outer side end face of the hub, and a light transmission part is arranged on the outer end cover and corresponds to the light emitting lamp strip.

Preferably, when the control circuit board is placed in the first accommodating cavity, the control circuit board is located between the stator and the inner end cover and is arranged close to the vehicle body;

the motor shaft is close to one end of the vehicle body and is provided with a flat mouth structure, the starting end of the flat mouth structure is close to the stator, the starting end of the flat mouth structure is provided with a second step, the fixing seat is sleeved with the flat mouth structure through the first flat mouth groove and abuts against the second step under the action of the fixing part, and a gap is kept between the rotor and the stator.

Preferably, one surface of the fixing seat facing the inner end cover is provided with a supporting edge, the supporting edge surrounds the first flat groove, the motor shaft is sleeved with a second bearing, an inner ring of the second bearing is abutted against the supporting edge, the inner end cover is provided with a second bearing accommodating groove, and the second bearing is sleeved on the motor shaft and is located in the second bearing accommodating groove.

Preferably, a through hole and a first inlet hole are formed in the motor shaft, and the first inlet hole is close to the stator; the control circuit board is arranged on one surface of the fixed seat, which is deviated from the stator, a first wire passing hole is formed in the fixed seat, a first wire harness of the control circuit board penetrates through the first wire passing hole and enters the wire passing through hole from the first inlet hole, and therefore the control circuit board penetrates into the vehicle body.

Preferably, a circuit board accommodating cavity is formed in one surface, facing the hub, of the inner end cover, the fixing seat and the control circuit board are located in the circuit board accommodating cavity, and the control circuit board is arranged facing the inner end cover.

Preferably, a light emitting lamp strip is arranged on the outer side of the stator, the outer end cover and the hub are of an integrated structure, and a light transmission part is arranged on the outer end cover and corresponds to the light emitting lamp strip.

Preferably, when the control circuit board is located at one side of the inner end cover close to the vehicle body and is fixed on the penetrating end of the motor shaft, the mounting part further comprises a fixing cover, and the control circuit board is located between the fixing cover and the fixing seat.

Preferably, the fixing cover and the outer wall of the inner end cover form a second accommodating cavity for accommodating the fixing seat and the control circuit board; a rotating groove is formed in the outer wall of the inner end cover, a second annular side plate is arranged on one surface, facing the inner end cover, of the fixed cover, the second annular side plate is matched with the rotating groove and is circular; the second annular side plate extends into the rotary groove and keeps the interval arrangement.

Preferably, the fixing seat and the outer side wall of the inner end cover are arranged at intervals;

a sealing structure is arranged between the fixed seat and the fixed cover and comprises a convex edge and a second sealing groove, one of the convex edge and the second sealing groove is arranged on the fixed seat, and the other one is correspondingly arranged on the fixed cover; the convex edge is matched and sealed with the second sealing groove.

Preferably, the inner wall of the inner end cover is provided with a second bearing mounting groove, the second bearing mounting groove is provided with a bearing exposing hole, the motor shaft penetrates through the bearing exposing hole, the second bearing is sleeved on the motor shaft and is arranged in the second bearing mounting groove, and the outer side wall of the inner ring of the second bearing is exposed out of the bearing exposing hole;

the fixed seat is provided with a first flat slot matched with the motor shaft, so that the fixed seat and the motor shaft are relatively static; a first bulge is arranged at the edge of the first flat notch groove, the first bulge is arranged towards the inner end cover in a protruding mode, and the first bulge extends into the bearing exposure hole and is abutted against the outer side wall of the inner ring of the second bearing;

a second flat opening groove matched with the motor shaft is formed in the fixed cover, so that the fixed cover and the motor shaft are relatively static; a second bulge is arranged at the edge of the second flat-mouth groove, the second bulge is arranged towards the fixed seat in a protruding manner, and the second bulge is abutted against the side wall of the fixed seat to form a space for accommodating the control circuit board;

a fixing piece is arranged on the outer side of the fixing cover, and the fixing cover is fixedly connected with the motor shaft through the fixing piece and keeps a butting state with the fixing seat; the fixed seat is kept in an abutting state with the inner ring of the second bearing under the action of the fixed cover.

Preferably, a first sealing groove is arranged on the side surface of the fixed cover or the fixed seat and used for clamping and sealing with a shell of the vehicle body so as to enable part of the fixed cover to be arranged in the vehicle body,

the control circuit board comprises a plurality of wiring sockets arranged towards the vehicle body, the fixed cover is close to one side of the vehicle body and is provided with a plurality of windows, the wiring sockets are in one-to-one correspondence with the windows and penetrate through the windows to be exposed and at least one in the vehicle body, and the wiring sockets are electrically connected with the detection circuit board.

Preferably, a wire passing through hole and a second inlet hole are formed in the motor shaft, the second inlet hole is located between the fixing seat and the fixing cover and corresponds to the control circuit board in position, and the second inlet hole is communicated with the wire passing through hole and used for introducing a first wire harness of the control circuit board into the vehicle body.

Preferably, the motor shaft is inserted into the through shaft and fixedly connected with the through shaft, a wire outlet hole is formed in the through shaft, the first wire harness enters the through shaft through the wire passing through hole in the motor shaft and then penetrates out of the wire outlet hole, and at least one of the first wire harness is electrically connected with the detection circuit board.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the through shaft with the integrated structure is additionally arranged in the balance car body, so that the overall structural strength of the balance car is enhanced, the connection strength of the first car body and the second car body is improved, the bearing capacity of the balance car is improved, the deformation of the connection part of the first car body and the second car body is avoided, and the safe operation of the balance car is ensured;

2. meanwhile, two ends of the through shaft are fixedly connected with the first wheel and the second wheel respectively, the first wheel and the second wheel are parts of the balance car, which are in contact with the ground, and the force borne by the balance car can be transmitted to the first wheel and the second wheel through the through shaft and then transmitted to the ground, so that the bearing capacity of the balance car is higher, and the structure is more stable;

3. because the through shaft is arranged in the vehicle body and traverses the first vehicle body and the second vehicle body, the space in the vehicle body is occupied, and therefore, the control system is moved out of the vehicle body; the control circuit board is arranged on the wheels and forms a modular structure with the wheels, and when the control circuit board is used, the wheels of the modular balance car can be directly assembled and electrically connected with the car body, so that the mounting process is simplified, and the assembly efficiency is improved;

4. because both ends of the through shaft are fixedly connected with the first wheel and the second wheel, the operation of a user on a vehicle body cannot be transmitted to the control circuit board on the wheels, the detection circuit board is independent, the detection circuit board and the posture detection sensor on the detection circuit board are arranged on the upper surface of the upper shell, the posture detection sensor is used for detecting the posture operation of the human body, the detection circuit board is arranged on the upper surface of the upper shell and is closer to the feet of the human body, the original operation change of the feet of the human body can be detected, the inclination detection of the vehicle body can reflect the operation of the human body more truly, the actual inclination angle can be reflected more accurately, the rotation detection is more accurate, and the balance vehicle can achieve the expected operation purpose of a driver; the control circuit board is electrically connected with the detection circuit board to realize signal transmission, and the detected operation signals are transmitted to the control circuit board and then the balance car is controlled to perform corresponding operations.

Drawings

Fig. 1 is an exploded view of a balance car according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of an exploded structure of a balance car at another angle according to an embodiment of the invention.

Fig. 3 is an exploded view of a wheel of a balance car according to a first embodiment of the present invention.

Fig. 4 is a schematic diagram of an exploded view of the wheel of the balance car of fig. 3 at another angle.

Fig. 5 is a cross-sectional structural schematic diagram of the wheel of the balance car in fig. 3.

Fig. 6 is an exploded view of a balance car wheel according to a second embodiment of the present invention.

Fig. 7 is a schematic view of an exploded view of the wheel of the balance car of fig. 6 from another angle.

Fig. 8 is a cross-sectional structural schematic diagram of the wheel of the balance car in fig. 6.

Fig. 9 is an exploded view of a balance car wheel according to a third embodiment of the present invention.

Fig. 10 is a schematic view of an exploded view of the wheel of the balance car of fig. 9 from another angle.

Fig. 11 is a cross-sectional structural schematic diagram of the wheel of the balance car in fig. 9.

Fig. 12 is an exploded view of a balance car wheel according to a fourth embodiment of the present invention.

Fig. 13 is a schematic view of an exploded view of the wheel of the balance car of fig. 12 from another angle.

Fig. 14 is a cross-sectional structural schematic diagram of the wheel of the balance car in fig. 12.

Fig. 15 is a schematic structural diagram of an upper case in the fifth embodiment of the present invention.

Fig. 16 is a structural schematic view of the lower case in the fifth embodiment of the present invention.

Fig. 17 is a structural schematic view of a lower case in the sixth embodiment of the present invention.

Fig. 18 is a schematic structural view of a vehicle body according to a sixth embodiment of the invention.

In the figure: 10. a vehicle body; 101. a first side plate; 102. a second side plate; 103. accommodating grooves; 104. sinking; 105. a first concave plate; 106. a second concave plate; 107. a wire passing groove; 108. mounting holes; 11. a first vehicle body; 111. a first connecting column; 112. a first connecting seat; 113. a first connecting groove; 12. a second vehicle body; 121. a cover body; 122. a base; 123. a first rotating half-tank; 124. a second rotating half-tank; 125. a spring mount; 126. a spring active cavity; 127. a second connecting seat; 128. a second connecting groove; 13. an upper shell; 131. a circuit board mounting groove; 132. a through groove; 133. a pedal mounting groove; 134. a spring mounting hole; 135. a movable mounting hole; 14. a lower case; 15. a pedal; 151. a spring connecting column; 152. a trigger; 153. a movable connecting column;

20. a wheel; 21. a first wheel; 22. a second wheel; 23. a motor shaft; 231. a wire passing through hole; 232. a first access opening; 233. a second access hole; 234. a first step; 235. a second step; 236. a transverse portion; 237. a flat mouth structure; 24. a hub motor; 241. a rotor; 242. a stator; 243. a hub; 2431. a first bearing mounting groove; 2432. a snap-in hole; 2433. a first accommodating chamber; 244. a first bearing; 245. a second bearing; 246. an outer end cover; 2461. buckling; 2462. a light-transmitting portion; 247. an inner end cap; 2471. a second bearing mounting groove; 2472. a bearing exposure hole; 2473. a second bearing receiving groove; 2474. a circuit board accommodating cavity; 2475. a rotating tank; 2476. rotating the groove; 248. a second wire harness; 25. a light emitting strip;

30. a control circuit board; 301. a first wire harness; 302. a second fastening hole; 303. a wiring socket; 31. detecting the circuit board; 311. a plug-in unit; 312. a standing man detection switch; 32. a fixed seat; 321. a first flat-mouth groove; 322. a first convex portion; 323. a first recess; 324. abutting against the edge; 325. a first wire passing hole; 326. a first fastening hole; 327. a first protrusion; 328. a first annular side plate; 33. a fixed cover; 331. a second flat-mouth groove; 332. a second accommodating chamber; 333. a first fastening post; 334. a third fastening hole; 335. a second annular side plate; 336. a second protrusion; 337. a wire passing gap; 338. a window; 34. a fastener; 35. a convex edge; 36. a second seal groove; 37. a first seal groove; 38. a fixing member;

40. passing through the shaft; 41. a first connection hole; 42. a rotating member; 43. a reset member; 44. an extrusion; 45. a first fastener; 46. a second fastener; 47. and (7) a wire outlet hole.

Detailed Description

The present invention will now be described in more detail with reference to the accompanying drawings, wherein the description of the invention is given by way of illustration and not of limitation, and certain specific embodiments of the invention are described, but the invention is not limited thereto. The specific embodiments described are merely illustrative. The various embodiments may be combined with each other to form other embodiments not shown in the following description. The disclosure is also intended to cover alternatives, modifications, and equivalents. Furthermore, in the following description, numerous specific details are set forth in order to provide a thorough understanding of the disclosed technology to those of ordinary skill in the art. However, embodiments may be practiced without these specific details.

In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated without limiting the specific scope of protection of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, a definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the invention, "a number" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise explicitly defined or limited, the terms "assembled", "connected" and "connected" should be construed broadly and include, for example, fixed connections, detachable connections or integral connections; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

As shown in fig. 1 to 18, the two-wheel through-axle balance vehicle according to the embodiment of the invention comprises a wheel 20, a vehicle body 10 and a control system, wherein the vehicle body 10 comprises a first vehicle body 11 and a second vehicle body 12 which are arranged side by side from left to right, the wheel 20 comprises a first wheel 21 correspondingly connected with the first vehicle body 11 and a second wheel 22 correspondingly connected with the second vehicle body 12,

the vehicle body structure further comprises a through shaft 40, wherein the through shaft 40 is of an integrated structure, a first end of the through shaft 40 extends into the first vehicle body 11 and is fixedly connected with the first motor shaft 23 of the first wheel 21, a second end of the through shaft 40 extends into the second vehicle body 12 and is fixedly connected with the second motor shaft 23 of the second wheel 22, and at least one of the first vehicle body 11 and the second vehicle body 12 is rotatably connected with the through shaft 40;

the vehicle body comprises an upper shell 13 and a lower shell 14, the control system comprises a control circuit board 30 and a detection circuit board 31, the detection circuit board 31 is provided with a posture detection sensor, the control circuit board 30 is arranged on the first wheel 21 and/or the second wheel 22, the detection circuit board 31 is arranged on the upper shell 13, and the control circuit board 30 is electrically connected with the detection circuit board 31.

According to the invention, the through shaft 40 with an integrated structure is additionally arranged in the balance car body, so that the overall structural strength of the balance car is enhanced, the through shaft 40 transversely penetrates through the first car body 11 and the second car body 12 and is used as a framework in the first car body 11 and the second car body 12, the structural strength and the connection strength of the first car body 11 and the second car body 12 are enhanced, the deformation of the first car body 11 and the second car body 12 at the connection position is avoided, the balance car can bear heavier weight, and the safe operation of the balance car is ensured; meanwhile, the two ends of the through shaft 40 are respectively and fixedly connected with the first wheel 21 and the second wheel 22, the first wheel 21 and the second wheel 22 are the contact parts of the balance car and the ground, the force borne by the balance car can be transmitted to the first wheel 21 and the second wheel 22 through the through shaft 40 and then transmitted to the ground, the bearing capacity of the balance car is higher, and the structure is more stable.

Because the through shaft 40 is arranged in the vehicle body, the through shaft 40 transversely penetrates through the first vehicle body 11 and the second vehicle body 12, and occupies the space in the vehicle body, the control system is moved out of the vehicle body; the control circuit board 30 is arranged on the wheel and forms a modular structure with the wheel, and when the control circuit board is used, the wheel of the modular balance car can be directly assembled and electrically connected with the car body, so that the mounting process is simplified, and the assembly efficiency is improved; because the two ends of the through shaft 40 are fixedly connected with the first wheel 21 and the second wheel 22, the operation of a user on the vehicle body cannot be transmitted to the control circuit board 30 on the wheels, the detection circuit board 31 is independent, the detection circuit board 31 and the posture detection sensor thereon are arranged on the upper surface of the upper shell 13, the posture detection sensor is used for detecting the posture operation of the human body, the detection circuit board 31 is arranged on the upper surface of the upper shell 13, is closer to the feet of the user and can detect the original control change of the feet of the user, so that the inclination detection of the vehicle body can more truly reflect the control of the human body, the actual inclination angle can be more accurately reflected, the rotation detection is more accurate, and the balance vehicle can achieve the control purpose expected by the driver; the control circuit board 30 is electrically connected with the detection circuit board 31 to realize signal transmission, the detected operation signal is transmitted to the control circuit board 30, and then the balance car is controlled to make corresponding operation.

The first vehicle body 11 and the second vehicle body 12 in the invention are independent of each other and rotate relatively, the first vehicle body 11 can be a left vehicle body of a balance vehicle, and correspondingly, the second vehicle body 12 is a right vehicle body of the balance vehicle; the first body 11 may be a right body of the balance car, and correspondingly, the second body 12 may be a left body of the balance car.

The control circuit board 30 may be disposed on the first wheel 21, the second wheel 22, or both the first wheel 21 and the second wheel 22, and when there are two control circuit boards 30 of the balance car, one of the two control circuit boards is a main control board, and the other control circuit board is a sub-control board, and the two control circuit boards 30 are electrically connected in the car body.

The first vehicle body 11 can be rotatably connected with the through shaft 40, at this time, the upper shell 13 of the first vehicle body 11 is provided with a detection circuit board 31 and a posture detection sensor, and the detection circuit board 31 is electrically connected with the control circuit board 30 for signal transmission; alternatively, the second body 12 may be rotatably connected to the through shaft 40, and at this time, the upper case 13 of the second body 12 is provided with the detection circuit board 31 and the attitude detection sensor, and the detection circuit board 31 is electrically connected to the control circuit board 30 for signal transmission; of course, the first vehicle body 11 and the second vehicle body 12 may be rotatably connected to the through shaft 40 at the same time, while a limit structure is provided therebetween to limit the relative rotation angle of the first vehicle body 11 and the second vehicle body 12, and at this time, the upper cases 13 of the first vehicle body 11 and the second vehicle body 12 may be provided with the detection circuit board 31 and the posture detection sensor.

As shown in fig. 1 and fig. 2, the connection manner of the through shaft 40 and the vehicle body in the two-wheel through shaft 40 balance vehicle of the present invention is briefly described by taking the through shaft 40 fixedly connected with the first vehicle body 11 and rotatably connected with the second vehicle body 12 as an example. For the sake of convenience of distinction, the upper case 13 of the first vehicle body 11 is referred to as a first upper case, the lower case 14 of the first vehicle body 11 is referred to as a first lower case, the upper case 13 of the second vehicle body 12 is referred to as a second upper case, and the lower case 14 of the second vehicle body 12 is referred to as a second lower case.

As shown in fig. 1 and fig. 2, a first connection post 111 is disposed in the first vehicle body 11, the first connection post 111 is disposed at one end of the first vehicle body 11 close to the second vehicle body 12, a first connection hole 41 is disposed on the through shaft 40, the first connection hole 41 corresponds to the first connection post 111, and the first connection post 111 is inserted into the first connection hole 41 to fixedly connect the first vehicle body 11 to the through shaft 40. Preferably, the number of the first connection pillars 111 is greater than 1, as shown in fig. 1 and fig. 2, the number of the first connection pillars 111 is 2, and the number of the first connection holes 41 corresponds to the number of the first connection pillars 111, so that the first connection pillars 111 and the first connection holes 41 are more stably plugged, and the first vehicle body 11 and the through shaft 40 are more stably connected. The number of the first connecting columns 111 can also be 3, 4, 5 and the like, and the first connecting columns are arranged according to actual use requirements. The same structure may be adopted when the second vehicle body 12 is fixedly connected to the through-shaft 40.

As shown in fig. 1 and fig. 2, a mounting seat is provided in the second vehicle body 12, a rotating member 42 is provided on the through shaft 40, a rotating groove is provided in the mounting seat, the rotating member 42 is adapted to the rotating groove, and the through shaft 40 passes through the mounting seat and is rotatably connected to the second vehicle body 12 through the rotating member 42 and the rotating groove. More specifically, the mounting seat includes a base 122 and a cover 121, the second vehicle body 12 includes a second upper shell and a second lower shell, the base 122 and the second upper shell are of an integrated structure, and the cover 121 is located below the base 122 and is fixedly connected with the base 122 through screws. The cover 121 is provided with a first rotating half-groove 123, the base 122 is provided with a second rotating half-groove 124, the first rotating half-groove 123 and the second rotating half-groove 124 form a rotating groove, and the rotating member 42 is sleeved on the through shaft 40 and installed in the rotating groove. In this case, the through shaft 40 is rotatably connected to the second upper case as a member to be directly stepped on, and the force acting on the second upper case can be directly transmitted to the through shaft 40 by the connection, thereby further improving the bearing capacity of the second upper case. Of course, the base 122 may be a unitary structure with the second lower case, with other parts modified accordingly. The same structure may be adopted when the first vehicle body 11 is rotatably connected to the through shaft 40.

In the above embodiment, the rotating member 42 can be a bearing or a sleeve, so that the second body 12 and the second end of the through shaft 40 rotate more smoothly. More specifically, when rotating member 42 is the bearing, the cover is equipped with two at least bearings on the second end of logical axle 40, and the second rotates the groove and is the bearing groove, and the bearing is the bearing groove one-to-one, and the size of every bearing is all the same, sets up a plurality of bearings and is favorable to alleviateing the pressure that every bearing received, improves rotation efficiency. When the rotating member 42 is a sleeve, the second rotating groove is a sleeve groove, and a sleeve is sleeved on the second end of the through shaft 40, preferably, a lubricating layer is provided between the sleeve and the second end of the through shaft 40, so as to reduce the rotating friction force and make the rotation between the sleeve and the through shaft 40 smoother.

When the automobile body and lead to axle 40 and rotate to be connected, be equipped with reset structure between automobile body and the logical axle 40 for help automobile body automatic re-setting, provide more real pedal feel for the user simultaneously. When the first vehicle body 11 is rotatably connected with the through shaft 40, a reset structure is arranged in the first vehicle body 11; when the second vehicle body 12 is rotatably connected to the through shaft 40, a return structure is provided in the second vehicle body 12. Can all be equipped with reset structure in first automobile body 11 and the second automobile body 12, the first automobile body 11 is the same with the constitution of the reset structure that sets up in the second automobile body 12 for first automobile body 11 is the same with the feel of the foot of the second automobile body 12, and convenience of customers operates, and user experience is good. As shown in fig. 1 and fig. 2, the reduction structure comprises an extrusion part 44 and a reduction part 43, the extrusion part 44 is fixedly connected with the through shaft 40 or is an integrated structure, and the extrusion part 44 is fixedly connected with the through shaft 40 by screws, welding, and the like. The returning member 43 located in the first body 11 is connected to the first body 11 and both ends of the extrusion member 44 are correspondingly disposed, and the returning member 43 located in the second body 12 is connected to the second body 12 and both ends of the extrusion member 44 are correspondingly disposed.

The reset structure not only provides more real control foot feeling, but also can automatically reset the balance car in the non-working state, and the operation is simpler; the resetting structure is arranged on the through shaft 40, so that the space in the first vehicle body 11 and the second vehicle body 12 is saved, the first vehicle body 11 and the second vehicle body 12 are closer to the resetting piece 43, and the resetting feedback is more sensitive.

The returning structure will be described by taking the second body 12 and the returning structure as an example, the returning member 43 is connected to the second body 12, and both ends of the pressing member 44 are disposed correspondingly. When the second vehicle body 12 rotates relative to the through shaft 40, the distance between the returning member 43 and one end of the pressing member 44 is reduced, the returning member 43 is deformed to accumulate force, so that the second vehicle body 12 has a tendency to return, and after the force applied to the second vehicle body 12 disappears, the second vehicle body 12 returns by the returning member 43. The restoring member 43 may be connected to the pressing member 44, or may be provided separately from the pressing member 44.

Preferably, the reset structure is combined with the mounting seat, so that the space in the vehicle body is saved, and the structure of the vehicle body is more compact. As shown in fig. 1 and 2, when the rotating member 42 is a bearing and the number of the bearings is two, the returning structure is provided between the two bearings, more specifically, the returning member 43 is located between the two bearing grooves and the pressing member 44 is located between the two bearings.

When the base 122 and the second upper case are of an integrated structure, the extrusion member 44 is disposed on the lower portion of the through shaft 40, the cover 121 is disposed under the extrusion member 44, the extrusion member 44 is disposed in the spring movable cavity 126 of the cover 121, and the cover 121 and the base 122 are fixedly connected by screws. The reset piece 43 is a spring, the extrusion piece 44 is a plate-shaped structure called as an extrusion plate, two ends of the extrusion plate are positioned at two sides of the through shaft 40, and the number of the springs is at least two and respectively corresponds to two ends of the extrusion plate; at least two spring mounting seats 125 are arranged on the base 122, and a spring movable cavity 126 is arranged in the cover body 121. The size of the spring floating cavity 126 is larger than the size of the spring mounting 125 and provides a floating compression space for the spring. The extruded plate is made of a non-deformable material, such as steel, which may be identical to the material of the through-shaft 40. When the mounting seat rotates along with the second vehicle body 12, the distance between one end of the extrusion plate and the corresponding side of the spring groove is shortened, the spring on the side is compressed to accumulate force, so that the mounting seat has the tendency of resetting, and meanwhile, the mounting seat is fixedly connected with the second vehicle body 12, and the second vehicle body 12 has the tendency of resetting.

Preferably, in order to ensure that the spring maintains a vertical state and is convenient to contact and bear force with the extrusion surface of the extrusion plate, the spring mounting seat 125 comprises a spring groove and a spring mounting column, the spring groove is a cylindrical groove, the spring mounting column is arranged in the middle of the spring groove, and the spring is sleeved on the spring mounting column. In some embodiments, a gap is provided between the end of the spring mounting post and the pressing surface of the pressing plate, when the spring is pressed to a certain degree, the pressing plate contacts with the end of the spring mounting post, the relative rotation between the pressing plate and the mounting seat is stopped, and the second vehicle body 12 can not rotate towards the direction, thereby limiting the rotation angle of the second vehicle body 12 and the through shaft 40. The gap between the spring and the pressing surface of the pressing plate can be set according to actual requirements, and the rotation angle of the second vehicle body 12 relative to the through shaft 40 is taken as the basis.

In another specific embodiment (not shown), the number of springs is four, divided into two groups, respectively arranged on both sides of the through shaft 40; the four springs can provide a greater return force while making the connection between the return structure and the second vehicle body 12 more stable and the second vehicle body 12 return more smoothly. To correspond to the four springs, the extrusion plate is an "I" shaped plate having four ends, each spring corresponding to an end of the extrusion 44, respectively, to ensure that each spring is balanced.

The first vehicle body 11 and the second vehicle body 12 of the balance car are used for treading and bearing force, and the acting force is transmitted to the first wheel 21 and the second wheel 22 through the first vehicle body 11, the second vehicle body 12 and the through shaft 40, as shown in fig. 1 and fig. 2, when the first vehicle body 11 is fixedly connected with the through shaft 40 and the second vehicle body 12 is rotatably connected with the through shaft 40, the motor shaft 23 of the first wheel 21 is fixedly connected with the through shaft 40 and is simultaneously fixedly connected with the first vehicle body 11, the motor shaft 23 of the second wheel 22 is fixedly connected with the through shaft 40, and meanwhile, the joint of the motor shaft 23 and the through shaft 40 is rotatably connected with the second vehicle body 12.

More specifically, as shown in fig. 1 to fig. 2, the motor shaft 23 of the first wheel 21 is fixedly connected to the through shaft 40 by a first fastening member 45, a first connecting seat 112 is provided in the first vehicle body 11, the motor shaft 23 is fixedly connected to the through shaft 40 to form a first connection point, a first connecting slot 113 is provided in the first connecting seat 112, the shape of the first connecting slot 113 is adapted to the shape of the first connection point, and the first fastening member 45 penetrates through the first connection point to be fixedly connected to the first connecting slot 113, so that both the motor shaft 23 and the through shaft 40 are fixedly connected to the first vehicle body 11. The first coupling seat 112 may be provided on the upper case 13 to be integrally formed with the upper case 13, or may be provided on the lower case 14 to be integrally formed with the lower case 14. The first fastening member 45 is a screw, and the first fastening member 45 is threadedly coupled to the motor shaft 23, the through shaft 40, and the first coupling groove 113. Preferably, the number of the first fastening members 45 is greater than 1, and as shown in fig. 1, the number of the first fastening members 45 is 2, so that the first fastening members 45 are more firmly connected with the first connection portion and the first vehicle body 11. The number of the first fastening pieces 45 can also be 3, 4, 5 and the like, and the first fastening pieces are arranged according to actual use requirements. The first connecting pillar 111 and the first fastening member 45 fix both ends of the first body 11 to the through-shaft 40, so that the stable connection of the first body 11 to the through-shaft 40 is further reinforced.

The motor shaft 23 of the second wheel 22 is fixedly connected with the through shaft 40 through a second fastening piece 46, a second connecting seat 127 is arranged in the second vehicle body 12, a second connecting position is formed after the motor shaft 23 is fixedly connected with the through shaft 40, a second connecting groove 128 is arranged in the second connecting seat 127, the shape of the second connecting groove 128 is matched with that of the second connecting position and is semicircular, the circular tube type through shaft 40 can conveniently rotate in the second connecting groove 128, the second vehicle body 12 can rotate relative to the through shaft 40 and the motor shaft 23, and the second fastening piece 46 is not in contact with the second connecting groove 128. The second connecting holder 127 may be provided at the upper case 13 to be integrally formed with the upper case 13, or may be provided at the lower case 14 to be integrally formed with the lower case 14. The second fastening member 46 is a screw, and the second fastening member 46 is threadedly coupled to the motor shaft 23 and the through shaft 40. Preferably, the number of the second fastening members 46 is greater than 1, so that the connection between the first fastening member 45 and the first connection portion and the first vehicle body 11 is firmer, and the specific number can be set according to actual use requirements.

The main function of the control system of the invention can be the same as that of the control system of the balance car in the conventional design, and the control system is provided with a posture detection sensor and a control circuit board. Because the control circuit board is arranged on the motor shaft of the wheel, and the first wheel and the second wheel are both fixedly connected with the through shaft, the motor shaft cannot reflect the rotation condition of the vehicle body and cannot judge the operation posture of a human body, the posture detection sensor is independent. More specifically, the control system of the invention comprises a control circuit board and a detection circuit board, wherein the detection circuit board is provided with a posture detection sensor, the detection circuit board is arranged on the upper shell, the control circuit board is electrically connected with the detection circuit board for signal transmission, and the operation of a human body and the rotation of the vehicle body are fed back to the control circuit board, so that the balance vehicle is controlled. The posture detection sensor can be a gyroscope, and a detection circuit board is arranged on the upper side of the upper shell, the lower side of the pedal is closer to the feet of a person, the gyroscope can detect the original control change of the feet of the person, so that the inclination of the vehicle body can detect the control of the human body more truly, the actual inclination angle can be reflected more accurately, the rotation detection is more accurate, and the balance vehicle can achieve the control purpose expected by a driver.

As shown in fig. 1 and 2, in order to install and protect the sensing circuit board, a circuit board installation groove 131 is concavely formed in the upper surface of the upper case 13, the sensing circuit board 31 is positioned in the circuit board installation groove 131, and the thickness of the sensing circuit board 31 is not greater than the depth of the circuit board installation groove 131, and the sensing circuit board 31 is sunk in the circuit board installation groove 131 and electrically connected to the control circuit board 30. The upper case 13 may be a first upper case when the first vehicle body 10 is rotatable with respect to the through shaft 40, and the upper case 13 may be a second upper case when the second vehicle body 10 is rotatable with respect to the through shaft 40.

The detection circuit board 31 and the control circuit board 30 can be connected by a cable, more specifically, a plug connector 311 is arranged on one surface of the detection circuit board 31 facing the inside of the vehicle body 10, a through groove 132 is arranged at a position corresponding to the plug connector 311 at the bottom of the circuit board installation groove 131, the plug connector 311 extends towards the inside of the vehicle body 10 and is exposed in the through groove 132, the first wiring harness 301 on the control circuit board 30 can be plugged with the plug connector 311 on the detection circuit board 31 after entering the vehicle body 10, and the control circuit board 30 and the detection circuit board 31 are conveniently and electrically connected. The positions of the connectors 311 on the detection circuit boards 31 with different sizes are different, and correspondingly, the positions of the through slots 132 are different, and the positions of the through slots 132 need to avoid the through shafts 40 and other components below the upper shell 13.

In the conventional design, the balance car generally comprises a pedal 15, which is located on the upper surface of the upper shell 13 and movably connected with the upper shell 13, so that the pedal 15 can function as a covering part, the detection circuit board 31 is located below the pedal 15 and is arranged between the pedal 15 and the upper shell 13, a more targeted sealing structure is adopted, the sealing performance is better, and the detection circuit board 31 can be better protected.

As shown in fig. 1 and fig. 2, a standing person detection switch 312 is further disposed on the detection circuit board 31, the vehicle body 10 includes a pedal 15, the pedal 15 is movably connected to the upper surface of the upper shell 13, and the standing person detection switch 312 disposed on the upper shell 13 is disposed between the pedal and the upper shell 13 and corresponds to the trigger 152 disposed on the lower surface of the pedal 15. The standing person detection switch 312 can be an infrared photoelectric switch, an electromagnetic switch, a mechanical switch, and the like, the trigger 152 is of a thin plate structure, when a person stands on the pedal, and the gap between the lower surface of the pedal and the upper shell 13 becomes smaller, the trigger 152 is inserted into the standing person detection switch 312, and the balance car starts to work; at the same time, after the force on the pedal is removed, the pedal needs to be reset, stopping triggering the station people detection switch 312.

Pedal mounting grooves 133 are formed in the upper surface of the upper case 13 to accommodate and mount the pedals; the circuit board mounting groove 131 is located in the pedal mounting groove 133. In a specific embodiment, the pedal is provided with a gap varying with the upper shell 13 by a spring (not shown), a spring mounting hole 134 is provided in the pedal mounting groove 133, a spring is provided in the spring mounting hole 134, one end of the spring abuts against the inner surface of the pedal, and the other end abuts against the spring mounting hole 134. When a person stands on the pedal, the spring is compressed, the gap between the pedal and the upper shell 13 becomes small, the trigger 152 is inserted into the person standing detection switch 312, and the balance car starts to work; when a person descends from the step, the force on the step is removed, the spring pushes the step up, and the trigger 152 disengages from the standing person detection switch 312.

Preferably, the internal surface of footboard is equipped with spring coupling post 151, and spring coupling post 151 corresponds with the position of spring mounting hole 134, and the diameter of spring coupling post 151 is less than the diameter of spring, and spring coupling post 151 sets up the purpose and prevents that the spring from producing uncontrollable deformation when compressing, influences manned measuring's degree of accuracy.

In this embodiment, in order to realize the gap variation between the pedal and the upper shell 13, the inner surface of the pedal is provided with a movable connecting column 153, and a movable mounting hole 135 is arranged in the pedal mounting groove 133; the movable connecting column 153 comprises a connecting movable part and a clamping head, the clamping head is positioned below the movable mounting hole 135, and the diameter of the clamping head is larger than that of the movable mounting hole 135; the diameter of the connection movable portion is smaller than the diameter of the movable mounting hole 135 and moves up and down relative to the movable mounting hole 135. The connection movable column can be a screw, the connection movable part is a rod part of the screw, the clamping head is a screw head, a screw hole is formed in the inner surface of the pedal, and the end part of the screw is fixedly connected with the screw hole to facilitate installation of the pedal.

Based on the above embodiment, in order to further enhance the sealing of the pedal to the detection circuit board 31, preferably, the inner surface of the pedal is provided with a sealing edge (not shown), and the shape of the sealing edge is matched with the shape of the circuit board installation groove 131; the length of sealing edge is greater than the maximum distance between footboard and circuit board mounting groove 131, and sealing edge stretches into circuit board mounting groove 131 and closely cooperates with the lateral wall of circuit board mounting groove 131, like this, when the clearance changes between footboard and last casing 13 body, sealing edge can not break away from circuit board mounting groove 131 yet, has guaranteed the leakproofness of circuit board mounting groove 131 to protection detection circuit board 31 in it.

The wheel 20 of the invention comprises a hub motor 24, the hub motor 24 further comprises a rotor 241 and a stator 242, a first accommodating cavity 2433 is arranged in a hub 243, the rotor 241 and the stator 242 are positioned in the first accommodating cavity 2433, the rotor 241 is fixedly arranged on the side cavity wall of the first accommodating cavity 2433, the stator 242 is fixed on a motor shaft 23, the motor shaft 23 is rotatably connected with the hub, a tire is covered outside the hub and is used for contacting with the ground, and in the operation process, the hub rotates around the stator 242 or the motor shaft 23 under the electromagnetic action so as to drive a balance car to move. To facilitate the mounting of the rotor 241, the stator 242 and the motor shaft 23, the hub is cylindrical and has a single side opening, the inner end cap 247 is fixed to the hub in the direction of the opening by the fastening member 34, and the rotor 241 is fixed to the inner surface of the annular side wall of the hub. The middle of the plane side wall of the wheel hub is provided with a first bearing mounting groove 2431, a first bearing 244 is arranged in the first bearing mounting groove 2431, a second bearing mounting groove 2471 is arranged on the inner end cover 247, a second bearing 245 is arranged in the second bearing mounting groove 2471, a bearing exposing hole 2472 is arranged in the second bearing mounting groove 2471, one end of the motor shaft 23 is located in the first bearing mounting groove 2431 and is rotatably connected with the wheel hub through the first bearing 244, the other end of the motor shaft 23 penetrates through the bearing exposing hole 2472 and is an penetrating end, the middle section of the motor shaft 23 is connected with the second bearing 245, and the motor shaft 23 is rotatably connected with the inner end cover 247 through the second bearing 245.

The balance car wheel 20 needs to be connected with the car body 10 of the balance car, and is generally fixedly connected through the motor shaft 23, therefore, the motor shaft 23 crosses the wheel hub and penetrates out from one side of the inner end cap 247, after the wheel 20 is installed, the inner end cap 247 is closer to the car body 10, and the penetrating end of the motor shaft 23 can be fixedly connected with the car body 10.

The control circuit board 30 is arranged on the wheel 20 and is fixedly connected with the motor shaft 23, and the fixing mode is as follows: a first flat slot 321 adapted to the motor shaft 23 is disposed in the middle of the fixing seat 32, so that the fixing seat 32 and the motor shaft 23 are relatively stationary, and the fixing seat 32 is fixed to the motor shaft 23 itself or other components through the fixing member 38.

The control circuit board 30 has a motor driving function, a balance car master control function, a wireless communication function (bluetooth), a hall motor detection sensor and the like, namely, most of control components on the balance car are put into the balance car wheels 20, so that the balance car wheels 20 are integrated with more functions, and a portable and conveniently-installed large module is formed.

There are various mounting positions of the control circuit board 30 on the wheel 20, and several cases thereof will be described below by way of example. For convenience of description, the side of the hub close to the vehicle body 10 is taken as the inner end, and the side of the hub far from the vehicle body 10 is taken as the outer end.

Example one

As shown in fig. 3 to fig. 5, the control circuit board 30 is located outside the outer end of the hub, in order to facilitate the installation of the control circuit board 30 and the motor shaft 23 and protect the control circuit board 30, an outer end cover 246 is arranged on the outer end of the hub, the outer end cover 246 is detachably arranged with the hub, and the control circuit board 30 is located between the outer end cover 246 and the hub.

In the embodiment, the mounting portion includes a fixing base 32 and a fixing member, the control circuit board 30 is fixed on the fixing base 32, a first flat slot 321 adapted to the motor shaft 23 is disposed in the middle of the fixing base 32, a flat transverse portion 236 is disposed at the outer end of the motor shaft 23, the first flat slot 321 is adapted to the transverse portion in shape, the fixing base 32 is sleeved on the motor shaft 23 to prevent the fixing base 32 and the motor shaft 23 from rotating and shaking relatively, meanwhile, a first step 234 is disposed on one side of the transverse portion 236 close to the hub 243, and a gap is disposed between the first step 234 and an end face of the hub 243. The fixing member 38 is a snap spring or a nut, and is located outside the fixing seat 32, the fixing seat 32 abuts against the first step 234 under the action of the fixing member 38, and a distance is kept between the fixing seat 32 and the end face of the hub, so that the fixing seat 32 is prevented from touching the rotating hub, and the fixing seat 32 is prevented from being damaged. The outer end of the motor shaft 23 is provided with a corresponding clamp spring groove or thread groove for fixing a clamp spring or nut.

As shown in fig. 5, the outer end side of the hub 243 needs to be mounted with the first bearing 244, which protrudes outward, in order to shorten the width of the entire wheel 20, the fixing seat 32 includes a first protrusion 322, the first protrusion 322 protrudes outward, a cavity is provided on a side facing the hub 243 for accommodating the protrusion on the outer end side of the hub 243, the first protrusion 322 is located at a middle position of the fixing seat 32, and the first flat notch 321 is provided on the first protrusion 322.

As shown in fig. 3, the control circuit board 30 is disposed on a surface of the fixing base 32 facing away from the hub 243 to prevent the control circuit board 30 from being too close to the hub. The control circuit board 30 and the fixing base 32 are provided with a first fastening hole 326 and a second fastening hole 302 which correspond to each other, and the control circuit board 30 is fixed on the fixing base 32 through a fastening member 34, wherein the fastening member 34 is a screw. The fixing base 32 may be a heat-resistant material to prevent the temperature of the hub motor 24 from affecting the control circuit board 30. The control circuit board 30 has a certain thickness, and in order to shorten the width of the entire wheel 20, the fixing seat 32 includes a first concave portion 323, the first concave portion 323 is disposed around the first convex portion 322 and is concave 104 toward the hub direction, and the annular control circuit board 30 is fixedly mounted in the first concave portion 323.

The first wire harness 301 on the control circuit board 30 needs to penetrate into the vehicle body 10 to be electrically connected with other components in the vehicle body 10, while the existing in-wheel motor 24 has the second wire harness 248, and the second wire harness 248 enters the vehicle body 10 through the wire through hole 231 on the motor shaft 23 to be connected with the control circuit board 30 in the conventional technology. In this embodiment, the wire passing through hole 231 of the motor shaft 23 may be a through hole penetrating through the entire motor shaft 23, and the first wire harness 301 enters the vehicle body 10 from the outer end of the motor shaft 23 through the wire passing through hole 231, and then passes through the through shaft 40 through the wire outlet hole 47 of the through shaft 40 to be electrically connected with the inner component of the vehicle body 10 and the detection circuit board 31. The motor shaft 23 may further include a first access hole 232, the first access hole 232 is located in the first receiving cavity and is used for allowing the second wire harness 248 to enter the wire passing through hole 231 and further enter the vehicle body 10, and the first wire harness 301 and the second wire harness 248 may be electrically connected in the vehicle body 10.

The outer end cover 246 is detachably connected with the outer end face of the hub and covers the control circuit board 30; as shown in fig. 3 and 4, the outer end cap 246 is provided with a snap 2461, the outer end surface of the hub 243 is provided with a snap hole 2432, the snap 2461 is snapped into the snap hole 2432, and the outer end cap 246 can be quickly mounted on the hub 243.

Preferably, as shown in fig. 3 and 5, a light strip 25 is further disposed between the outer end cap 246 and the outer end face of the boss 243, and the shape of the light strip 25 may not be limited to the shape of the control circuit board 30, so as to design more dazzling patterns. At this time, the distance between the control circuit board 30 and the light emitting strip 25 is very short, and the wiring harness of the light emitting strip 25 is directly connected to the control circuit board 30 and controlled by the control circuit board 30. The light strip 25 may be disposed on the outer end surface of the boss 243, or may be disposed at other positions, such as the inner side of the outer end cap 246. The outer end cover 246 is provided with a light-transmitting portion 2462 corresponding to the light-emitting strip 25 for transmitting light of the light-emitting strip 25. The translucent portion 2462 may be made of translucent plastic.

Example two

The control circuit board 30 of the present embodiment is disposed in the first receiving cavity 2433, and the control circuit board 30 may be fixed between the stator 242 and the outer end surface of the hub 243, and may be fixed between the stator 242 and the inner end cap 247. To facilitate the installation of the control circuit board 30 and the fixing base 32, preferably, the control circuit board 30 is fixed between the stator 242 and the inner end cap 247 through the fixing base 32.

As shown in fig. 6 to fig. 8, the control circuit board 30 of the embodiment is located between the stator 242 and the inner end cap 247 and is disposed near the vehicle body 10, the center of the fixing base 32 is provided with a first flat slot 321, one end of the motor shaft 23 near the vehicle body 10 is provided with a flat structure 237, the flat structure 237 is a plane disposed on a side surface of the motor shaft 23, and the flat structure 237 extends from a position of the motor shaft 23 near the stator 242 to an end of the motor shaft 23, which refers to an end of the motor shaft 23 near the vehicle body 10, so that the fixing base 32 can be sleeved on the motor shaft 23 from the end of the motor shaft 23. The shape of the first flat slot 321 matches the shape of the motor shaft 23 to prevent the fixing base 32 and the control circuit board 30 thereon from rotating or shaking relative to the motor shaft 23. In order to position the fixing base 32 and avoid the fixing base 32 touching the rotor 241, the starting end of the flat opening structure 237 is provided with a second step 235, a certain gap is arranged between the second step 235 and the stator 242, the fixing base 32 abuts against the second step 235 under the action of the fixing piece, and the gap is kept between the fixing base 32 and the rotor 241 and the stator 242, so as to protect the fixing base 32. At this time, the fixing member may be a snap spring or a nut, and a snap spring groove or a thread is provided at a corresponding position of the motor shaft 23, so that the snap spring or the nut can be fixed on the motor shaft 23.

As shown in fig. 8, the fixing element in this embodiment may also be a second bearing, and more specifically, a surface of the fixing base 32 facing the inner end cap 247 is provided with a supporting edge 324, the supporting edge 324 surrounds the first flat slot 321, the motor shaft 23 is sleeved with a second bearing 245, an inner ring of the second bearing 245 supports against the supporting edge 324, the inner end cap 247 is provided with a second bearing accommodating slot 2473, the second bearing 245 is sleeved on the motor shaft 23 and is located in the second bearing accommodating slot 2473, after the inner end cap 247 and the hub 243 are fixedly connected by the fastener 34, one side of the fixing base 32 supports against the second step 235, and the other end supports against the inner ring of the second bearing 245, so as to position the fixing base 32 by using the second bearing 245 and the inner end cap 247.

The purpose of the second step 235 is to: for saving the cost, the fixing base is generally materials such as plastics, and the second bearing plays very important stator fixed function, if all lean on the fixing base, produce not hard up easily, the crimping power that produces when whole interior end cover fastens is great moreover, and it is possible to destroy the fixing base to lean on the limit through the second bearing pressure-bearing, need with some crimping power crimping on the second step, protection fixing base, make the installation of second bearing more stable simultaneously.

As shown in fig. 6 and 8, the control circuit board 30 is disposed on a surface of the fixing base 32 facing away from the hub 243, and away from the rotating hub 243 and the rotor 241, so as to protect the control circuit board 30. The fixing base 32 may be a heat-resistant material to prevent the temperature of the in-wheel motor 24 from affecting the control circuit board 30.

At this time, the first wire harness 301 on the control circuit board 30 needs to penetrate into the vehicle body 10 to be electrically connected with other components in the vehicle body 10, and the in-wheel motor has the second wire harness which enters into the vehicle body through the wire passing through hole on the motor shaft to be connected with the control circuit board in the conventional technology. In the embodiment, the wire passing through hole 231 of the motor shaft 23 may be a through hole penetrating the entire motor shaft 23, or may be a non-through hole as long as it communicates with the inside of the vehicle body 10. The motor shaft 23 is provided with a first inlet hole 232, the first inlet hole 232 is located in the first accommodating cavity, the second wire harness 248 can enter the wire passing through hole 231, the first wire harness 301 can penetrate through the first wire harness, and the structure of the motor shaft 23 is fully utilized. And because the control circuit board 30 is arranged on the side of the fixed seat 32 departing from the stator 242, the fixed seat 32 is provided with the first wire passing hole 325, and the first wire harness 301 of the control circuit board 30 passes through the first wire passing hole 325 and enters the wire passing through hole 231 from the first inlet hole 232, thereby penetrating into the vehicle body 10. The first wire harness 301 and the second wire harness 248 may be electrically connected within the vehicle body 10.

As shown in fig. 8, the control circuit board 30 is disposed away from the boss 243 and also disposed toward the inner end cap 247, so that, in order to protect the control circuit board 30, a circuit board accommodating cavity 2474 is disposed on a side of the inner end cap 247 facing the boss 243, and the fixing base 32 and the control circuit board 30 are located in the circuit board accommodating cavity 2474.

Preferably, as shown in fig. 8, a light strip 25 is further disposed between the stator 242 and the outer end face of the hub 243, and the shape of the light strip 25 may not be limited to the shape of the control circuit board 30, so as to design a more dazzling pattern. At this time, the outer end cap 246 and the boss 243 are integrated, and the light strip 25 may be fixed inside the outer end cap 246. The wiring harness of the light emitting strip 25 can penetrate into the vehicle body 10 through the wire passing through hole 231 of the motor shaft 23 and is electrically connected with the control circuit board 30. The outer end cover 246 is provided with a light-transmitting portion 2462 corresponding to the light-emitting strip 25 for transmitting light of the light-emitting strip 25.

EXAMPLE III

The control circuit board 30 of the present embodiment is located outside the inner end cap 247, close to the vehicle body 10, and fixed to a penetrating end of the motor shaft 23, which is a portion of the motor shaft 23 exposed outside the wheel 20. The mounting portion of the present embodiment includes a fixing base 32 and a fixing cover 33, and the control circuit board 30 is located between the fixing base 32 and the fixing cover 33, and fixed on the fixing base 32 or fixed on the fixing cover 33.

As shown in fig. 9 to 11, the control circuit board 30 is fixed on the fixing seat 32, and the fixing seat 32 is fixedly connected with the penetrating end of the motor shaft 23, which has the advantages of avoiding excessive processing of the control circuit board 30, and reducing the cost because the fixing seat 32 can be processed in an injection molding manner. Preferably, the fixing base 32 may be made of a heat insulating material to prevent the motor shaft 23 from transferring heat of the in-wheel motor 24 to the control circuit board 30.

As shown in fig. 9 and 10, the fixing base 32 is a disc shape, the fixing base 32 includes a first annular side plate 328 perpendicular to the plane plate, and the control circuit board 30 is located in a circular ring structure; the planar plate of the fixing base 32 is provided with a first fastening hole 326, the control circuit board 30 is provided with a second fastening hole 302, and the control circuit board 30 is fixed in the fixing base 32 by a fastening member 34 such as a screw passing through the first fastening hole 326 and the second fastening hole 302. At this time, the control circuit board 30 is disposed on a surface of the fixed base 32 away from the inner end cap 247, the fixed base 32 is in a disc shape, and the front surface of the control circuit board 30 is disposed toward the opening of the fixed base 32.

Preferably, the outer side walls of the fixing base 32 and the inner end cover 247 are arranged at intervals, so that the fixing base 32 is prevented from being in contact with the rotating inner end cover 247.

As shown in fig. 9 to 11, the fixing cover 33 is a basin shape with a single side opening, the size of the fixing cover 33 is larger than that of the fixing base 32, the fixing cover 33 covers the fixing base 32 and the control circuit board 30, and the fixing cover 33 and the outer wall of the inner end cap 247 form a second accommodating cavity 332 for accommodating the fixing base 32 and the control circuit board 30.

The fixing cover 33 mainly functions to protect the control circuit board 30. The control circuit board 30 is covered on the control circuit board 30 through the penetrating ends of the fixing seat 32 and the motor shaft 23 and the fixing cover 33, so that the control circuit board 30 can be protected in the transportation, storage and assembly processes of the balance car wheel 20, and the control circuit board 30 and components on the control circuit board are prevented from being extruded, damaged and falling off by external force.

More specifically, as shown in fig. 11, the components on the control circuit board 30 are disposed toward the fixing cover 33 and face away from the inner end cap 247, and meanwhile, the opening of the fixing cover 33 is disposed toward the inner end cap 247 to form a second accommodating cavity 332 with the outer wall of the inner end cap 247 for accommodating the control circuit board 30. The second receiving chamber 332 is required to maintain a relatively sealed environment to prevent the control circuit board 30 from being damaged by the inflow water. Meanwhile, the inner end cap 247 needs to rotate with the wheel 20, and the fixing cap 33 cannot be directly connected to the inner end cap 247. Preferably, the outer wall of the inner end cap 247 is provided with a rotating groove 2475, one surface of the fixed cap 33 facing the inner end cap 247 is provided with a second annular side plate 335, the second annular side plate 335 is perpendicular to the plane of the fixed cap 33 and is arranged in an annular shape to form an arc-shaped side wall of the fixed cap 33, the width of the second annular side plate 335 is greater than the thickness of the control circuit board 30, and the second accommodating cavity 332 has a space enough for the control circuit board 30 to be installed. The second annular side plate 335 is matched with the rotating groove 2475 and is circular; the edge of the second annular side plate 335 extends into the rotation groove 2475 and is spaced apart from the rotation groove 2475, three surfaces of the second annular side plate 335 are spaced apart from the rotation groove 2475 to perform a sealing function, and the circular second annular side plate 335 and the rotation groove 2475 allow the fixed cover 33 and the inner end cover 247 to be free from interference when the wheel 20 is in operation.

At this time, the fixed base 32 and the fixed cover 33 are both fixedly connected with the penetrating end of the motor shaft 23, and more specifically, as shown in fig. 10, the inner wall of the inner end cover 247 is provided with a second bearing mounting groove 2471, the second bearing mounting groove 2471 is provided with a bearing exposing hole 2472, the motor shaft 23 penetrates through the bearing exposing hole 2472, the second bearing is sleeved on the motor shaft 23 and is placed in the second bearing mounting groove 2471, and the outer side wall of the inner ring of the second bearing is exposed in the bearing exposing hole 2472;

the fixed seat 32 is provided with a first flat slot 321 matched with the motor shaft 23, so that the fixed seat 32 and the motor shaft 23 are relatively static; a first protrusion 327 is arranged at the edge of the first flat slot 321, the first protrusion 327 protrudes towards the inner end cap 247, the first protrusion 327 extends into the bearing exposing hole 2472 and abuts against the outer side wall of the inner ring of the second bearing, and the first protrusion 327 keeps a certain distance between the fixed seat 32 and the inner end cap 247, so that the fixed seat 32 is prevented from contacting the rotating inner end cap 247;

the fixed cover 33 is provided with a second flat opening groove 331 matched with the motor shaft 23, so that the fixed cover 33 and the motor shaft 23 are relatively static; the edge of the second flat slot 331 is provided with a second protrusion 336, the second protrusion 336 is protruded towards the fixing seat 32, and the second protrusion 336 abuts against the side wall of the fixing seat 32 to form a space for accommodating the control circuit board 30, so as to protect the control circuit board 30 and components thereon;

a fixing part 38 is arranged on the outer side of the fixing cover 33, and the fixing cover 33 is fixedly connected with the motor shaft 23 through the fixing part 38 and keeps the abutting state with the fixing seat 32; the fixing base 32 is held in contact with the inner race of the second bearing 245 by the fixing cover 33.

Preferably, the fixing member may be a snap spring, and correspondingly, a positioning groove for fixing the snap spring is arranged at the penetrating end of the motor shaft 23; alternatively, the fixing member may be a nut, and a thread adapted to the nut is provided on the penetrating end of the motor shaft 23.

In order to control the operation of the stator 242 and the rotor 241, the in-wheel motor 24 has a second wiring harness 248, the second wiring harness 248 needs to be led out from the first accommodating cavity to the outside of the wheel 20 and led into the vehicle body 10, the motor shaft 23 is provided with a through hole 231 for passing wires and a first access hole 232, and enters the through hole 231 for passing wires through the first access hole 232 and then enters the vehicle body 10 from the through hole 231 for passing wires. At this time, a second inlet hole 233 is additionally formed on the motor shaft 23, the second inlet hole 233 is located between the fixing base 32 and the fixing cover 33 and corresponds to the position of the control circuit board 30, and the second inlet hole 233 is communicated with the wire passing through hole 231 for introducing the first wire harness 301 of the control circuit board 30 into the vehicle body 10.

As shown in fig. 11, the fixing cover 33 forms a space for accommodating the control circuit board 30 with the fixing base 32 through the second protrusion 336, the second protrusion 336 is provided with a wire passing notch 337, the wire passing notch 337 corresponds to the first access hole 232, the first wire harness 301 passes through the wire passing notch 337 and the first access hole 232 to enter the wire passing through hole 231, the first wire harness 301 is prevented from being exposed outside the fixing base 32 and the fixing cover 33, and the sealing performance of the assembly of the control circuit board 30 is further improved.

According to the embodiment, the first wire harness 301 and the second wire harness 248 enter the vehicle body 10 through the motor shaft 23, holes except holes of the motor shaft 23 do not need to be formed in the side plates of the vehicle body 10, the assembling process of the modularized balance vehicle wheel 20 and the balance vehicle body 10 is simplified, and therefore the sealing effect is enhanced.

Example four

As shown in fig. 12 to 14, the control circuit board 30 of the present embodiment is located outside the inner end cap 247 close to the vehicle body 10 and fixed to the penetrating end of the motor shaft 23, which is the part of the motor shaft 23 exposed outside the wheel 20. The mounting portion of the present embodiment includes a fixing base 32 and a fixing cover 33, and the control circuit board 30 is located between the fixing base 32 and the fixing cover 33, and fixed on the fixing base 32 or fixed on the fixing cover 33. Fixed lid 33 and fixing base 32 surround control circuit board 30 alone, reach sealed protection's effect, prevent that water stain, impurity from getting into, cause destruction to control circuit board 30. With this structure, the control circuit board 30 can be prevented from being damaged during transportation and assembly. Preferably, the fixing base 32 may be made of a heat insulating material to prevent the motor shaft 23 from transferring heat of the in-wheel motor 24 to the control circuit board 30.

In the present embodiment, as shown in fig. 14, the fixing base 32 and the fixing cover 33 have the same size, the first annular side plate 328 of the fixing base 32 protrudes toward the fixing cover 33, the second annular side plate 335 of the fixing cover 33 protrudes toward the fixing base 32, and the diameters of the first annular side plate 328 and the second annular side plate 335 are the same.

A sealing structure is arranged between the fixed seat 32 and the fixed cover 33, the sealing structure comprises a convex edge 35 and a second sealing groove 36, one of the convex edge 35 and the second sealing groove 36 is arranged on the fixed seat 32, and the other one is correspondingly arranged on the fixed cover 33; the lip 35 is adapted to seal with the second seal groove 36. More specifically, in a specific embodiment, the protruding edge 35 is disposed on a surface of the first annular side plate 328 facing the second annular side plate 335, the second sealing groove 36 is disposed on a surface of the second annular side plate 335 facing the first annular side plate 328, and the protruding edge 35 is engaged with the second sealing groove 36, so that a relatively sealed space is formed between the fixing base 32 and the fixing cover 33 to protect the control circuit board 30; in another specific embodiment, as shown in fig. 14, the second sealing groove 36 is disposed on a surface of the first annular side plate 328 facing the second annular side plate 335, the protruding edge 35 is disposed on a surface of the second annular side plate 335 facing the first annular side plate 328, and the protruding edge 35 is engaged with the second sealing groove 36, so that a relatively sealed space is formed between the fixing base 32 and the fixing cover 33 to protect the control circuit board 30. The fixing cover 33 and the fixing base 32 can also be fixed and sealed in other manners, such as being fixed by gluing or being tightly fixed by screws.

Preferably, as shown in fig. 12 and 13, the fixing base 32 is a disk shape, the control circuit board 30 is a circular control circuit board 30, a first fastening hole 326 is formed in a planar plate of the fixing base 32, a second fastening hole 302 is formed in the control circuit board 30, a first fastening column 333 is formed in the fixing cover 33, the first fastening column 333 is located on an inner wall of the fixing cover 33 and protrudes toward the fixing base 32, a third fastening hole 334 is formed in the first fastening column 333, and the fastening member 34 penetrates through the third fastening hole 334, the second fastening hole 302 and the first fastening hole 326 to fix the fixing cover 33 and the control circuit board 30 on the fixing base 32, so that the fixing base 32, the fixing cover 33 and the control circuit board 30 form a stable integral structure, and the installation stability of the control circuit board 30 is improved.

At this time, the fixing base 32 and the fixing cover 33 are both fixedly connected with the penetrating end of the motor shaft 23, and more specifically, as shown in fig. 13, the inner wall of the inner end cover 247 is provided with a second bearing mounting groove 2471, the second bearing mounting groove 2471 is provided with a bearing exposing hole 2472, the motor shaft 23 penetrates through the bearing exposing hole 2472, the second bearing is sleeved on the motor shaft 23 and placed in the second bearing mounting groove 2471, and the outer side wall of the inner ring of the second bearing is exposed in the bearing exposing hole 2472;

a fixing piece is arranged on the outer side of the fixing cover 33, and the fixing cover 33 is fixedly connected with the motor shaft 23 through the fixing piece and keeps the abutting state with the fixing seat 32; the fixing base 32 is held in abutment with the inner race of the second bearing by the fixing cover 33.

Preferably, the fixing member may be a snap spring, and correspondingly, a positioning groove for fixing the snap spring is provided on the penetrating end of the motor shaft 23; alternatively, the fixing member may be a nut, and a thread adapted to the nut is provided on the penetrating end of the motor shaft 23.

Preferably, the fixing base 32 and the outer side wall of the inner end cap 247 are arranged at intervals, so as to prevent the fixing base 32 from touching the rotating inner end cap 247.

Preferably, as shown in fig. 12, the outer side wall of the inner end cap 247 is provided with a rotation groove 2476, and the rotation groove 2476 is matched with the size of the fixing seat 32, so that the fixing seat 32 is partially inserted into the rotation groove 2476. It is noted that although the fixing base 32 is partially inserted into the rotation groove 2476, the fixing base 32 is spaced apart from the outer side wall of the inner end cap 247. The fixing seat 32 is slightly embedded in the inner end cap 247 in this way for the purpose of shortening the overall width of the wheel 20 and the overall length of the motor shaft 23.

Preferably, as shown in fig. 12 and 13, the control circuit board 30 is provided with a connection jack 303 for electrically connecting the control circuit board 30 with components in the vehicle body 10 and the detection circuit board 31, at this time, the connection jack 303 needs to be exposed in the vehicle body 10, the second wire harness 248 of the in-wheel motor 24 enters the vehicle body 10 through the motor shaft 23 to be inserted into one of the connection jacks 303, and other components in the vehicle body 10 can also be inserted into the connection jack 303 to realize signal transmission and control.

The fixing cover 33 covers the control circuit board 30, and in order to expose the wiring sockets 303 in the vehicle body 10, a plurality of windows 338 are provided on the fixing cover 33, and the wiring sockets 303 correspond to the windows 338 one by one, and pass through the windows 338 and are exposed.

Preferably, control circuit board 30 is the ring shape circuit board, and wiring socket 303 has the certain distance along the marginal arc distribution of ring shape circuit board between the wiring socket 303, makes things convenient for the wiring plug, avoids first connecting seat or second connecting seat simultaneously, avoids the through-shaft.

Preferably, the control circuit board 30, the fixing seat 32 and other structural parts are disposed in the vehicle body 10, and the specific structure is as described in the following embodiments.

Based on the third embodiment and the fourth embodiment, the control circuit board 30, the fixing seat 32 and other structures may be integrally disposed outside the vehicle body 10 of the balance vehicle, or may be partially disposed in the vehicle body 10.

Because the control circuit board 30 and the related structure are additionally arranged on the wheel 20, the weight of the wheel 20 is increased, and imbalance of the vehicle body 10 is easily caused, preferably, the control circuit board 30, the fixing seat 32 and other structures are partially arranged in the vehicle body 10 and partially arranged outside the vehicle body 10, so that the control circuit board 30 and the fixing seat are directly connected with the vehicle body 10, the contact area is increased, the connection between the control circuit board 30 assembly and the wheel 20 and the vehicle body 10 is enhanced, meanwhile, the length of the motor shaft 23 and the whole width of the vehicle body 10 of the balance vehicle are shortened, and the structure of the balance vehicle is more compact.

In order to install a part of the control circuit board 30 and related structures disposed in the vehicle body 10, a mounting hole 108 is formed in a side edge of the vehicle body 10, a side wall of the fixing seat 32 or the fixing cover 33 is in sealing engagement with the mounting hole 108, and a receiving groove 103 for receiving a part of components of the control circuit board 30 is formed in the side edge of the vehicle body 10. In the above embodiment, the edge of the side plate forming the mounting hole 108 is in fit and clamping connection with the first sealing groove 37 on the fixing base 32 or the fixing cover 33, so as to seal the control circuit board 30 and the related structures with the vehicle body 10.

The vehicle body 10 includes an upper shell 13 and a lower shell 14, a mounting hole 108 is disposed between a first side plate 101 of the upper shell 13 and a second side plate 102 of the lower shell 14, a first sealing groove 37 is disposed on a sidewall of the fixing seat 32 or the fixing cover 33, and during mounting, the first side plate 101 and the second side plate 102 forming the mounting hole 108 are respectively embedded into the first sealing groove 37, so as to seal the control circuit board 30 assembly and the vehicle body 10.

EXAMPLE five

As shown in fig. 15 and fig. 16, in the embodiment, the balance car wheel 20 is arranged on the side of the car body 10, the motor shaft 23 is fixedly connected with the through shaft 40 in the car body 10, and meanwhile, the joint formed by the motor shaft 23 and the through shaft 40 is arranged in the first connecting seat or the second connecting seat. Due to the existence of the first and second connecting seats, the first and second connecting

seats

112 and 112 need to be moved inward properly to form a receiving groove.

More specifically, taking the first connection seat as an example, when the inner surface of the upper case 13 is provided with the first connection seat 112, and the recess 104 is provided between the outer side wall of the first connection seat 112 and the first side plate 101 of the upper case 13, at this time, the inner side of the second side plate 102 of the lower case 14 is provided with a component not tightly attached to the second side plate 102, so that the corresponding portion of the second side plate 102 can be directly hollowed out, the mounting hole 108 is formed at the corresponding portion of the first side plate 101, the upper portion of the receiving groove 103 is formed by the recess 104 on the upper case 13, and the lower portion of the receiving groove 103 is formed at the corresponding position of the inner side of the second side plate 102.

When the inner surface of the lower casing 14 is provided with the first connecting seat 112, the recess 104 is arranged between the outer side wall of the first connecting seat 112 and the second side plate 102 of the lower casing 14, the recess 104 is arranged between the outer side wall of the motor shaft 23 fixing seat 32 and the second side plate 102 of the lower casing 14, at this time, the inner side of the first side plate 101 of the upper casing 13 or a part which is not tightly attached to the first side plate 101 is arranged, the corresponding part of the first side plate 101 can be directly hollowed out, the mounting hole is formed by the corresponding part of the second side plate 102, the upper part of the accommodating groove is formed by the corresponding part of the hollowed first side plate 101, and the lower part of the accommodating groove is formed by the recess 104 of the lower casing 14.

The circuit board mounting groove 131 on the upper case 13 and the first connecting seat 112 or the second connecting seat are arranged in a staggered manner, so that interference is avoided, and wiring is facilitated.

The shape of holding tank and the control circuit board 30 and the part of relevant structure in placing in automobile body 10 looks adaptation, and the edge of mounting hole stretches into first seal groove 37, seals whole mounting hole, prevents that impurity from holding the hole and getting into balance car inside, damaging various parts. The control circuit board 30 and a part of the related structure extend into the mounting hole, namely extend into the vehicle body 10, so that the distance between the wheels 20 and the outer wall of the side plate of the balance vehicle is shortened, the width of the whole balance vehicle is shortened, the design change is small compared with the original balance vehicle, and the cost is saved.

Based on this embodiment, the connection socket 303 and the first connection seat 112 or the second connection seat are distributed in a staggered manner, so as to facilitate connection. Taking the first connecting seat 112 as an example, when the first connecting seat 112 is located inside the first side plate 101 of the upper shell 13, the wiring socket 303 is disposed at a position of the control circuit board 30 corresponding to the lower shell 14, and corresponds to the lower half of the accommodating groove; when the first connecting seat 112 is located inside the second side plate 102 of the lower shell 14, the wiring receptacle 303 is disposed at a position of the control circuit board 30 corresponding to the upper shell 13, corresponding to the upper half of the receiving groove.

EXAMPLE six

As shown in fig. 17 and 18, the present embodiment is different from the fifth embodiment in that an inner concave plate is added to further enhance the sealing performance of the vehicle body 10. More specifically, a first inner concave plate 105 is arranged on the inner side of the first side plate 101 of the upper shell 13, and the first inner concave plate 105 and the first side plate 101 form a first inner groove; a second inner concave plate 106 is arranged on the inner side of the second side plate 102 of the lower shell 14, and a second inner groove is formed between the second inner concave plate 106 and the second side plate 102; the first inner recess and the second inner recess form a receiving groove that receives a part of the control circuit board 30 assembly.

Taking the first connecting seat 112 as an example, in the embodiment where the first connecting seat 112 is disposed on the inner surface of the upper shell 13, the first inner concave plate 105 corresponds to the outer sidewall of the first connecting seat 112, the first inner concave corresponds to the concave 104 in the fifth embodiment, the first inner concave forms the upper half of the receiving groove 103, and the second inner concave forms the lower half of the receiving groove 103; in the embodiment in which the first connection seat 112 is provided on the inner surface of the lower case 14, the second inner concave plate 106 corresponds to the outer side wall of the first connection seat 112, and the second inner concave groove corresponds to the concave 104 in the fifth embodiment, the first inner concave groove forms the upper half portion of the receiving groove, and the second inner concave groove forms the lower half portion of the receiving groove. The provision of the first concave plate 105 or the second concave plate 106 enhances the inside barrier function of the housing.

Based on the present embodiment, the wiring sockets 303 and the first connection seats 112 or the second connection seats are distributed in a staggered manner, taking the first connection seats 112 as an example, when the first connection seats 112 are located inside the first concave plate 105 of the upper shell 13, as shown in fig. 18, the edge of the second concave plate 106 close to the first concave plate 105 is provided with a groove for the wire harness to pass through, and the groove and the first concave plate 105 form a wire passing groove 107; when the first connecting seat 112 is located inside the second concave board 106 of the lower shell 14, a groove for passing the wire harness is formed on the edge of the first concave board 105 close to the second concave board 106, and the groove and the second concave board 106 form a wire passing groove 107.

It is noted that the fifth embodiment and the sixth embodiment can be combined with the above-mentioned embodiments to form new embodiments.

The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention should not be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are intended to be covered by the claims.

Claims

1. A two-wheel through-axle balance car comprises wheels, a car body and a control system, and is characterized in that the car body comprises a first car body and a second car body which are arranged side by side from left to right, the wheels comprise first wheels correspondingly connected with the first car body and second wheels correspondingly connected with the second car body,

the vehicle body comprises an upper shell and a lower shell, the control system comprises a control circuit board and a detection circuit board, a posture detection sensor is arranged on the detection circuit board, the control circuit board is arranged on the first wheel and/or the second wheel, the detection circuit board is arranged on the upper shell, and the control circuit board is electrically connected with the detection circuit board;

the wheel comprises a hub motor, the hub motor comprises a hub, a stator, a rotor and a motor shaft, the single side of the hub is provided with an opening, the hub is provided with a first accommodating cavity, the stator and the rotor are positioned in the first accommodating cavity, an inner end cover is arranged at the opening of the hub and fixedly connected with the hub, the motor shaft transversely penetrates through the hub and penetrates out of one side of the inner end cover, and the control circuit board is fixed on the motor shaft through an installation part;

an outer end cover is arranged on the outer side of one end, far away from the vehicle body, of the hub, and the control circuit board is located between the outer end cover and the hub; or alternatively

The control circuit board is positioned in the first accommodating cavity; or

The control circuit board is positioned on one side of the inner end cover close to the vehicle body and is fixed on the penetrating end of the motor shaft;

the installation department includes fixing base and mounting, control circuit board fixes on the fixing base, be equipped with in the middle of the fixing base with the first flat mouthful of groove of motor shaft adaptation makes the fixing base with the motor shaft is static relatively, and passes through the mounting with motor shaft fixed connection.

2. The two-wheel through-axle balance car of claim 1, wherein: the upper surface of epitheca is equipped with the circuit board mounting groove, detection circuit board sink locate in the circuit board mounting groove and with control circuit board electricity is connected.

3. The two-wheel through-axle balance car of claim 2, wherein: a standing person detection switch is also arranged on the detection circuit board,

the automobile body includes the footboard, the footboard activity is fixed the upper surface of epitheca, is located standing people detection switch on the epitheca is located the footboard with between the epitheca, and with the trigger piece of footboard lower surface corresponds the setting.

4. The two-wheel through-axle balance car of claim 3, wherein: the upper surface of the upper shell is provided with pedal mounting grooves; the circuit board mounting groove is positioned in the pedal mounting groove; the pedal mounting groove is internally provided with a spring mounting hole, a spring is arranged in the spring mounting hole, one end of the spring is abutted against the inner surface of the pedal, and the other end of the spring is abutted against the spring mounting hole.

5. The two-wheel through-axle balance car of claim 4, wherein: the inner surface of the pedal is provided with a spring connecting column, the position of the spring connecting column corresponds to that of the spring mounting hole, and the diameter of the spring connecting column is smaller than that of the spring.

6. The two-wheel through-axle balance car of claim 4, wherein: the inner surface of the pedal is provided with a movable connecting column, and a movable mounting hole is formed in the pedal mounting groove; the movable connecting column comprises a connecting movable part and a clamping head, the clamping head is positioned below the movable mounting hole, and the diameter of the clamping head is larger than that of the movable mounting hole; the diameter of the connecting movable part is smaller than that of the movable mounting hole, and the connecting movable part moves up and down relative to the movable mounting hole.

7. The two-wheel through-axle balance car of claim 3, wherein: the inner surfaces of the pedals are provided with sealing edges, and the shapes of the sealing edges are matched with those of the circuit board mounting grooves; the length of the sealing edge is greater than the maximum distance between the pedal and the circuit board mounting groove, and the sealing edge extends into the circuit board mounting groove and is tightly matched with the side wall of the circuit board mounting groove.

8. The two-wheel through-axle balance car of claim 1, wherein: when the control circuit board is positioned between the outer end cover and the hub, the fixed seat comprises a first convex part, and the first flat slot is formed in the first convex part; the outer end of the motor shaft is provided with a flat transverse part and a first step, a gap is formed between the first step and the end face of the hub, the fixing seat is sleeved with the transverse part through the first flat opening groove and abuts against the first step under the action of the fixing part, and the fixing seat keeps a distance from the end face of the hub.

9. The two-wheel through-axle balance car of claim 8, wherein: the fixing seat comprises a first concave part, the first concave part is arranged around the first convex part and is sunken towards the direction of the hub, and the control circuit board is fixedly arranged in the first concave part in a ring shape.

10. The two-wheeled through-axle balance vehicle of claim 8, wherein: the motor shaft is provided with a wire passing through hole, and a first wire harness of the control circuit board enters the vehicle body through the wire passing through hole.

11. The two-wheel through-axle balance car of claim 8, wherein: the outer end cover is detachably connected with the outer end face of the hub and covers the control circuit board; and a light emitting lamp strip is further arranged between the outer end cover and the outer side end face of the hub, and a light transmission part is arranged on the outer end cover and corresponds to the light emitting lamp strip.

12. The two-wheel through-axle balance car of claim 1, wherein: when the control circuit board is arranged in the first accommodating cavity, the control circuit board is positioned between the stator and the inner end cover and is close to the vehicle body;

13. The two-wheel through-axle balance car of claim 12, wherein: the inner end cover is provided with a first bearing accommodating groove, the inner end cover is provided with a second bearing accommodating groove, and the first bearing accommodating groove is arranged on the inner end cover.

14. The two-wheel through-axle balance car of claim 12, wherein: a through hole and a first inlet hole are formed in the motor shaft, and the first inlet hole is close to the stator; the control circuit board is arranged on one surface, deviating from the stator, of the fixed seat, a first wire passing hole is formed in the fixed seat, a first wire harness of the control circuit board penetrates through the first wire passing hole and enters the wire passing through hole from the first inlet hole, and therefore the control circuit board penetrates into the vehicle body.

15. The two-wheel through-axle balance car of claim 14, wherein: one side of the inner end cover facing the hub is provided with a circuit board accommodating cavity, the fixing seat and the control circuit board are located in the circuit board accommodating cavity, and the control circuit board faces the inner end cover.

16. The two-wheel through-axle balance car of claim 12, wherein: the outer side of the stator is provided with a light emitting lamp belt, the outer end cover and the hub are of an integrated structure, and a light transmission part is arranged on the outer end cover and corresponds to the light emitting lamp belt.

17. The two-wheel through-axle balance car of claim 1, wherein: when the control circuit board is positioned on one side of the inner end cover close to the vehicle body and is fixed on the penetrating end of the motor shaft, the mounting part further comprises a fixing cover, and the control circuit board is positioned between the fixing cover and the fixing seat.

18. The two-wheeled through axle balance vehicle of claim 17, wherein: the outer walls of the fixed cover and the inner end cover form a second accommodating cavity for accommodating the fixed seat and the control circuit board; a rotary groove is formed in the outer wall of the inner end cover, a second annular side plate is arranged on one surface, facing the inner end cover, of the fixed cover, and the second annular side plate is matched with the rotary groove and is circular; the second annular side plate extends into the rotary groove and keeps the interval arrangement.

19. The two-wheel through-axle balance car of claim 17, wherein: the fixed seat and the outer side wall of the inner end cover are arranged at intervals;

20. The two-wheel through-axle balance car of claim 17, wherein: the inner wall of the inner end cover is provided with a second bearing installation groove, the second bearing installation groove is provided with a bearing exposure hole, the motor shaft penetrates through the bearing exposure hole, a second bearing is sleeved on the motor shaft and is arranged in the second bearing installation groove, and the outer side wall of the inner ring of the second bearing is exposed out of the bearing exposure hole;

the fixed seat is provided with a first flat opening groove matched with the motor shaft, so that the fixed seat and the motor shaft are relatively static; a first bulge is arranged at the edge of the first flat notch groove, the first bulge is arranged towards the inner end cover in a protruding mode, and the first bulge extends into the bearing exposure hole and is abutted against the outer side wall of the inner ring of the second bearing;

21. The two-wheel through-axle balance car of claim 17, wherein: the side surface of the fixed cover or the fixed seat is provided with a first sealing groove which is used for clamping and sealing with a shell of the vehicle body so as to ensure that part of the fixed cover is arranged in the vehicle body,

22. The two-wheel through-axle balance car of claim 17, wherein: the motor shaft is provided with a through hole and a second inlet hole, the second inlet hole is located between the fixing seat and the fixing cover and corresponds to the control circuit board in position, and the second inlet hole is communicated with the through hole and used for introducing a first wire harness of the control circuit board into the vehicle body.

23. The two-wheel through-axle balance vehicle of claim 10, 14 or 22, wherein: the motor shaft is inserted into the through shaft and fixedly connected with the through shaft, a wire outlet hole is formed in the through shaft, the first wire harness enters the through shaft through the wire passing through hole in the motor shaft and then penetrates out of the wire outlet hole, and at least one of the first wire harnesses is electrically connected with the detection circuit board.