CN113335436A

CN113335436A - Balance car wheel and balance car thereof

Info

Publication number: CN113335436A
Application number: CN202110513218.7A
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: 2021-09-03

Abstract

The invention discloses a balance car wheel and a balance car thereof, wherein the balance car wheel comprises a hub motor and a balance car controller assembly, the hub motor comprises a motor shaft and a hub, and the motor shaft transversely penetrates through the hub and penetrates out of one side of an inner end cover of the hub; the controller assembly comprises a controller and an installation part, and the controller is fixed on the penetrating end of the motor shaft through the installation part and is arranged close to the inner end cover of the hub; the motor shaft comprises a connecting part fixedly connected with the vehicle body, and the controller component positioned at the penetrating end of the motor shaft is at least partially arranged in the vehicle body. The balance car has the advantages that the controller is taken out of the balance car body, so that the structure of the balance car body is favorably reduced, the balance car body is more compact, and the controller and wheels of the balance car are modularized; the problem that the existing balance car is complex in installation steps is solved; the controller module is partially arranged in the vehicle body and partially arranged outside the vehicle body, so that the length of a motor shaft and the whole width of the balance vehicle can be shortened.

Description

Balance car wheel and balance car thereof

Technical Field

The invention relates to the technical field of balance cars, in particular to a balance car wheel and a balance car thereof.

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. Electrodynamic balance car needs the controller to control start-up, functioning speed, the direction of travel etc. of balance car, and the controller of current most two-wheeled electrodynamic balance car is whole to be located the balance car casing for the installation procedure of balance car is loaded down with trivial details, can't realize the quick installation of modularization, and the manufacturing cost of balance car is higher.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a balance car wheel, which realizes modularization of a controller assembly and the wheel.

The second purpose of the invention is to provide a balance car, wherein the controller module is partially arranged in the car body and partially arranged outside the car body, which is beneficial to shortening the length of the motor shaft and the whole width of the balance car.

One of the purposes of the invention is realized by adopting the following technical scheme:

a balance car wheel comprises a hub motor and a balance car controller component,

the hub motor comprises a motor shaft and a hub, and the motor shaft penetrates through the hub and penetrates out of one side of an inner end cover of the hub;

the controller assembly comprises a controller and an installation part, and the controller is fixed on the penetrating end of the motor shaft through the installation part and is arranged close to the inner end cover of the hub;

the motor shaft comprises a connecting part fixedly connected with a vehicle body, and at least part of a controller assembly positioned at the penetrating end of the motor shaft is arranged in the vehicle body.

Preferably, the controller includes the circuit board, the installation department includes flat mouthful of structure and mounting in the middle of the circuit board, be equipped with the step on the end of wearing out of motor shaft, the shape of flat mouthful of structure with the shape looks adaptation of end of wearing out, the controller passes through flat mouthful of structure with the end joint of wearing out of motor shaft, and under the effect of mounting with the step counterbalance location.

Preferably, the mounting portion further includes a fixing cover covering the controller; the side of the fixed cover is provided with a first sealing groove used for being clamped and sealed with a shell of the vehicle body.

Preferably, the fixing cover and the outer wall of the inner end cover form a second accommodating cavity for accommodating the controller; 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 installation department includes the fixing base, the controller with fixing base fixed connection, the fixing base with the end fixed connection that pierces through of motor shaft.

Preferably, the fixing seat comprises a first annular side plate perpendicular to the plane plate, and a first sealing groove is formed in the outer surface of the first annular side plate and used for being clamped and sealed with a shell of the vehicle body.

Preferably, the mounting part further comprises a fixing cover, and the controller is located between the fixing cover and the fixing seat; the side face of the fixed seat or the fixed cover is provided with a first sealing groove used for being clamped and sealed with a shell of the vehicle body.

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 controller; 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 outer side wall of the inner end cover is provided with a rotating groove, and the rotating groove is matched with the fixed seat in size, so that the fixed seat is partially arranged in the rotating 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 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;

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 controller;

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.

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; and a fixing piece is arranged on the outer side of the first flat-mouth groove, and the fixing seat is fixedly connected with the motor shaft through the fixing piece and keeps in a butting state with the inner ring of the second bearing.

Preferably, the fixing piece is a snap spring, and correspondingly, a positioning groove for fixing the snap spring is arranged at the penetrating end of the motor shaft; or the fixing piece is a nut, and the penetrating end of the motor shaft is provided with a thread matched with the nut.

Preferably, the fixing seat is disc-shaped, the controller is a circular circuit board, a first fastening hole is formed in a plane plate of the fixing seat, a second fastening hole is formed in the controller, and a fastening piece penetrates through the first fastening hole and the second fastening hole to enable the controller to be fixed on the fixing seat.

Preferably, the fixing base is disc-shaped, the controller is a circular circuit board, a first fastening hole is formed in a plane plate of the fixing base, a second fastening hole is formed in the controller, a first fastening column is arranged on the fixing cover, the first fastening column is located on the inner wall of the fixing cover and protrudes towards the fixing base, a third fastening hole is formed in the first fastening column, and a fastening piece penetrates through the third fastening hole, the second fastening hole and the first fastening hole to fix the fixing cover and the controller on the fixing base.

Preferably, the controller includes a plurality of wiring sockets provided toward the vehicle body, the wiring sockets being exposed in the vehicle body.

Preferably, the controller includes a plurality of wiring sockets that set up towards the automobile body, fixed lid is close to be equipped with a plurality of windows on the one side of automobile body, wiring socket with the window one-to-one to pass the window is in expose in the automobile body.

Preferably, a through hole and a first inlet hole are formed in the motor shaft, the first inlet hole is located between the fixing seat and the fixing cover and corresponds to the controller in position, and the first inlet hole is communicated with the through hole and used for leading out a wiring harness of the controller from the penetrating end of the motor shaft.

Preferably, the controller comprises at least one patch cord for connecting with a patch panel in the vehicle body; the transfer line penetrates out of the motor shaft through the first access hole and the through hole.

Preferably, a wire passing groove is formed in the motor shaft, the starting end of the wire passing groove is located between the fixing seat and the fixing cover and corresponds to the controller, and the terminal of the wire passing groove is flush with the tail end of the penetrating end of the motor shaft and used for leading out a wire harness of the controller from the fixing cover.

Preferably, a viscose layer is further arranged on the motor shaft and covers the wire passing groove for fixing the wire harness.

Preferably, the fixing cover is provided with a first wire passing hole for leading out a wire harness of the controller from the fixing cover.

Preferably, the controller includes a circuit board and an aluminum case sealing structure covering the circuit board; and/or a plurality of exposure holes for exposing the wiring socket are arranged on the aluminum shell sealing structure.

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

a balance car comprises a car body and the wheel of the balance car, wherein a motor shaft of a hub motor is fixedly connected with the car body, and a controller assembly is partially arranged in the car body and is in sealing connection with the car body; the vehicle body is provided with a plurality of components, and the components are connected with the controller and perform signal transmission.

Preferably, an adapter plate is arranged in the vehicle body, the controller comprises an adapter wire, and the adapter wire is connected with the adapter plate through a first access hole and a through hole in the motor shaft.

Preferably, the components comprise a battery assembly and a control lamp assembly, wherein the battery assembly is directly or indirectly electrically connected with the controller and performs signal transmission; the control light assembly is electrically connected to and in signal communication with the controller, either directly or indirectly.

Preferably, the fixed cover is provided with a first wire passing hole for leading out the wiring harness of the controller from the fixed cover; the side wall of the vehicle body is provided with a corresponding second wire passing hole, and the wire harness penetrates out of the first wire passing hole and then enters the vehicle body through the second wire passing hole.

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

the controller of the controller assembly is used for controlling the operation of the balance car, and the controller is taken out of the balance car body, so that the structure of the balance car body is reduced, the balance car is more compact, the use requirements of small size and convenience in carrying of the balance car are met, and the controller and wheels of the balance car are modularized; the problem of current balance car installation steps loaded down with trivial details is solved, balance car controller's waterproof performance has been improved. Meanwhile, because the hub motor can generate a large amount of heat during working, the controller assembly is directly arranged in the hub motor, which easily causes the controller to be overheated, and influences the normal work of the controller assembly, therefore, the controller assembly is arranged on the outer side of the inner end cover, so that the balance car controller and the wheels can still form a transplantable balance car module. The controller module is partially arranged in the vehicle body and partially arranged outside the vehicle body, so that the length of a motor shaft and the whole width of the balance vehicle can be shortened.

Drawings

Fig. 1 is a schematic diagram of a partial explosion structure of a wheel of a balance car according to an embodiment of the present invention, which shows a connection manner of a control circuit board and a motor shaft in the first embodiment.

Fig. 2 is a schematic view of a set cover according to an embodiment of the present invention, which shows the structure of the set cover in the first embodiment and the eighth embodiment.

Fig. 3 is a schematic view of an inner end cap of an embodiment of the present invention, which shows the structure of the outer side wall of the inner end cap in the first and fourth embodiments.

Fig. 4 is a schematic diagram of a partial explosion structure of a wheel of a balance car according to an embodiment of the present invention, which shows a structure of a fixing base and a control circuit board in a second embodiment.

Fig. 5 is a schematic view of a fixing base according to an embodiment of the invention, which shows another structure of the fixing base according to the second embodiment.

Fig. 6 is a schematic view of a balance car wheel and a car body shell according to an embodiment of the invention, which shows the structure of the balance car wheel in the third embodiment and the upper shell in the sixth embodiment.

Fig. 7 is an inside schematic view of an inner end cap, a fixing base and a control circuit board according to an embodiment of the invention.

Fig. 8 is a schematic diagram of a partial explosion structure of a wheel of a balance car according to an embodiment of the present invention, which shows a connection manner of an inner end cap, a fixing seat, a control circuit board, and a fixing cap in the fourth embodiment.

Fig. 9 is a schematic view of a partial explosion at another angle of the embodiment of fig. 8.

Fig. 10 is a schematic cross-sectional structure view of a balance car wheel according to an embodiment of the present invention, which shows a wire passing structure according to an eighth embodiment of the present invention.

Fig. 11 is a schematic diagram of a partial explosion structure of a wheel of a balance car according to an embodiment of the present invention, which shows a connection manner of an inner end cap, a fixing seat, a control circuit board, and a fixing cap in a fifth embodiment and a tenth embodiment.

Fig. 12 is a schematic view of a partial explosion at another angle of the embodiment of fig. 11.

FIG. 13 is a schematic cross-sectional view of the embodiment shown in FIG. 11.

FIG. 14 is a schematic view of the embodiment of FIG. 11 coupled to a body shell.

Fig. 15 is a schematic view of an upper housing of an embodiment of the present invention.

Fig. 16 is a schematic view of a lower case of the embodiment of the invention, which shows the structure of the lower case of the sixth embodiment.

Fig. 17 is a schematic view of a lower case of the embodiment of the present invention, which shows the structure of the lower case of the seventh embodiment.

Fig. 18 is a schematic view of a vehicle body cover of the embodiment of the invention, which shows a structure of a vehicle body cover of the seventh embodiment.

Fig. 19 is a schematic view of a balance car wheel according to an embodiment of the invention, which shows a wire passing structure according to a ninth embodiment of the invention.

FIG. 20 is a schematic view of the embodiment of FIG. 19 showing the wheels and body shell of the balance vehicle.

Fig. 21 is a schematic view of the motor shaft in the embodiment of fig. 19.

Fig. 22 is a schematic view of a vehicle body cover of the embodiment of the invention, which shows another structure of the vehicle body cover of the seventh embodiment and a partial wire passing structure of the eleventh embodiment.

Fig. 23 is a schematic view of a balance car wheel according to an embodiment of the present invention, which shows a partial wire-passing structure in the eleventh embodiment.

Fig. 24 is a schematic view of a wire-passing structure according to an embodiment of the invention, which shows an implementation manner of the wire-passing structure according to the twelfth embodiment.

Fig. 25 is an exploded view of the battery assembly in the embodiment of fig. 24.

Fig. 26 is a schematic view of a via structure according to an embodiment of the present invention, which shows another implementation manner of the via structure according to the twelfth embodiment.

In the figure: 10. a hub motor; 11. a motor shaft; 111. a piercing-out end; 112. a step; 113. a through hole; 114. a first access opening; 115. a second access hole; 116. grooving the threading; 12. a stator; 13. a rotor; 14. a hub; 141. a first accommodating chamber; 15. an inner end cap; 151. a rotating tank; 152. a second bearing mounting groove; 153. a bearing exposure hole; 154. rotating the groove; 16. a second bearing; 17. a first wire harness; 20. a controller assembly; 21. a control circuit board; 211. a flat mouth structure; 212. a notch; 213. blocking the platform; 214. a second fastening hole; 215. a wiring socket; 22. a second wire harness; 23. a fixed seat; 231. a first flat-mouth groove; 232. a first protrusion; 233. a card slot; 234. a first annular side plate; 235. a first fastening hole; 24. a fixed cover; 241. a flat plate; 242. a second annular side plate; 243. a second flat-mouth groove; 244. a second protrusion; 245. a wire passing gap; 246. a first fastening post; 247. a third fastening hole; 248. a window; 249. a first wire passing hole; 25. a fixing member; 26. a first seal groove; 27. a convex edge; 28. a second seal groove; 30. a vehicle body housing; 31. an upper shell; 311. a first side plate; 312. a first concave plate; 313. a first inner groove; 32. a lower case; 321. a second side plate; 322. a second concave plate; 323. a second inner groove; 324. a wire passing groove; 325. a second wire passing hole; 33. mounting holes; 331. accommodating grooves; 34. recessing; 35. a motor shaft fixing seat; 351. tabletting; 352. a motor shaft slot; 353. an arc-shaped portion; 36. wire harness buckling; 361. a spring plate; 362. a fixed part; 37. a motor shaft hole; 40. a battery assembly; 41. a battery case; 411. a recessed portion; 42. a cell structure; 43. a battery protection circuit board; 44. a switching socket; 45. an adapter plate.

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 expressly specified or limited, the terms "assembled", "connected", and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; 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 26, a balance car wheel and a balance car thereof according to an embodiment of the present invention will be explained in the following description, which solves the problem of complex assembly process of the balance car in the prior art.

The embodiment of the invention discloses a balance car wheel, which comprises a hub motor 10 and a controller component 20, wherein the hub motor 10 comprises a motor shaft 11 and a hub 14, and the motor shaft 11 transversely penetrates through the hub and penetrates out of one side of an inner end cover 15 of the hub;

the controller assembly 20 comprises a controller and a mounting part, wherein the controller is fixed on the penetrating end 111 of the motor shaft 11 through the mounting part and is arranged close to the inner end cover 15 of the hub;

wherein, the motor shaft 11 includes a connecting portion fixedly connected with the vehicle body, and the controller assembly 20 located on the penetrating end 111 of the motor shaft 11 is at least partially disposed in the vehicle body.

The hub motor 10 further comprises a rotor 13 and a stator 12, a first accommodating cavity 141 is arranged in the hub 14, the rotor 13 and the stator 12 are located in the first accommodating cavity 141, the rotor 13 is fixedly arranged on the side cavity wall of the first accommodating cavity 141, the stator 12 is fixed on the motor shaft 11, the motor shaft 11 is rotatably connected with the hub, the hub is covered with a tire for contacting with the ground, and in the operation process, the hub rotates around the stator 12 or the motor shaft 11 under the electromagnetic action so as to drive the balance car to move; as shown in FIG. 8, to facilitate the mounting of the rotor 13, the stator 12 and the motor shaft 11, the hub is cylindrical and has a single side opening, the inner end cap 15 is fixed to the opening of the hub by a fastener, and the rotor 13 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, a first bearing is arranged in the first bearing mounting groove, a second bearing mounting groove 152 is arranged on the inner end cover 15, a second bearing is arranged in the second bearing mounting groove 152, a bearing exposing hole 153 is arranged in the second bearing mounting groove 152, one end of the motor shaft 11 is located in the first bearing mounting groove and is rotatably connected with the wheel hub through the first bearing, the other end of the motor shaft 11 penetrates through the bearing exposing hole 153 and is connected with the second bearing 16 for penetrating the end 111, and the motor shaft 11 is rotatably connected with the inner end cover 15 through the second bearing 16.

The balance car wheel needs to be connected with the car body of the balance car, and is generally fixedly connected with the motor shaft, so that the motor shaft transversely penetrates through the wheel hub and penetrates out from one side of the inner end cover, the inner end cover is closer to the car body after the wheel is installed, and the penetrating end of the motor shaft can be fixedly connected with the car body.

The balance car wheel also comprises a wheel decorative lamp, the wheel decorative lamp is close to the outer side of the hub motor, specifically, the wheel decorative lamp can be fixed with the outer end cover of the hub, is positioned on the outer side of the hub, can also be positioned on the inner side of the hub close to the outer part, and is fixedly connected with the hub; the light-emitting device can also be fixedly connected with a stator or a motor shaft, is positioned at the inner side of the hub close to the outer part and emits light through the light-transmitting holes on the hub or the outer end cover of the hub. The distance between the wheel decorative lamp and the controller component is close, and the wheel decorative lamp can be directly electrically connected through a through hole in a motor shaft; or the lamp wire harness and the first wire harness of the hub motor enter the vehicle body shell together through the through hole of the motor shaft and then are electrically connected with the controller. The decorative lamp of the wheel is decorated on the wheel, which can form a horse race lamp effect, beautifies the appearance of the balance car and makes the balance car more popular with audiences such as teenagers.

The controller of the controller assembly in the embodiment of the invention is a controller of the balance car, is used for controlling the operation of the balance car, and is taken out from the car body of the balance car, so that the car body structure of the balance car is favorably reduced, the balance car is more compact, the use requirements of small size and convenience in carrying of the balance car are met, the problem that the existing balance car is complicated in installation steps is solved, and the waterproof performance of the balance car controller is improved. Meanwhile, because the hub motor can generate a large amount of heat during working, the controller assembly is directly arranged in the hub motor, which easily causes the controller to be overheated, and influences the normal work of the controller assembly, therefore, the controller assembly is arranged on the outer side of the inner end cover, so that the balance car controller and the wheels can still form a transplantable balance car module. The controller module is partially arranged in the vehicle body and partially arranged outside the vehicle body, so that the length of a motor shaft and the whole width of the balance vehicle are favorably shortened, and wiring is also favorably realized.

The controller has at least one or more of the following functions: the motor driving function, the balance car master control function, the attitude detection function, the Hall motor detection sensor or the wireless communication function and the like are also used for putting all or most of control parts on the balance car, so that more functions are integrated on the wheels of the balance car, and a large module which is portable and convenient to install is formed. And the balance car wheel passes through motor shaft and automobile body fixed connection, and the quilt is trampled along with the automobile body and is rotated certain angle, consequently, sets up balance car attitude detection sensor on the motor shaft also can normally work, and the accuracy detects, and controller and motor shaft fixed connection have also avoided the pencil that connects from the controller and then the wheel rotates together, damages the pencil, influences the part life-span of controller.

The controller subassembly and motor shaft fixed connection, specifically, there are the multiple mode in the type and the structure of installation department, and simultaneously, there are the multiple condition in the connected mode of controller and installation department. Several of these will be described below by way of example.

Example one

As shown in fig. 1, in this embodiment, the controller is a circuit board structure, and includes a control circuit board 21 and components thereon, the mounting portion includes a flat structure 211 in the middle of the control circuit board 21 and a fixing member 25, a step 112 is disposed on the penetrating end 111 of the motor shaft 11, the flat structure 211 is adapted to the penetrating end 111 in shape, and the controller is clamped with the penetrating end 111 of the motor shaft 11 through the flat structure 211 and is abutted against the step 112 under the action of the fixing member 25. In a particular embodiment, the step 112 is spaced from the inner end cap 15 to keep the controller at a distance from the rotating inner end cap 15 to protect the controller.

Preferably, the fixing member 25 may be a snap spring, and correspondingly, a positioning groove for fixing the snap spring is disposed on the penetrating end 111 of the motor shaft 11; alternatively, the fixing member 25 may be a nut, and the penetrating end 111 of the motor shaft 11 is provided with a thread adapted to the nut.

In addition, as shown in fig. 2, the mounting portion further includes a fixing cover 24, and the fixing cover 24 mainly functions to protect the controller and is hermetically connected to the vehicle body. The fixed cover 24 covers the controller, so that the controller can be protected in the processes of transportation, storage and assembly of the balance car wheels, and the control circuit board 21 and components on the control circuit board are prevented from being damaged and falling off due to extrusion of external force. More specifically, the components on the control circuit board 21 are disposed toward the fixing cover 24 and face away from the inner end cover 15, and meanwhile, the opening of the fixing cover 24 is disposed toward the inner end cover 15 and forms a second accommodating cavity with the outer wall of the inner end cover 15 to accommodate the controller.

The second receiving chamber is required to maintain a relatively sealed environment to prevent ingress of water from damaging the controller. Meanwhile, the inner end cap 15 needs to rotate along with the wheel, and the fixing cap 24 cannot be directly connected with the inner end cap 15. Preferably, as shown in fig. 3, the outer wall of the inner end cap 15 is provided with a rotation groove 151, one surface of the fixed cap 24 facing the inner end cap 15 is provided with a second annular side plate 242, the second annular side plate 242 is perpendicular to the plane plate 241 of the fixed cap 24 and is arranged in an annular shape to form an arc-shaped side wall of the fixed cap 24, the width of the second annular side plate 242 is greater than the thickness of the control circuit board 21, and the second accommodating cavity has a space enough for installing the controller. The second annular side plate 242 is matched with the rotary groove 151 and is circular; the edge of the second annular side plate 242 extends into the rotating groove 151 and keeps spaced, three surfaces of the edge of the second annular side plate 242 keep a small distance from the rotating groove 151 to perform a sealing function, and meanwhile, the circular second annular side plate 242 and the rotating groove 151 enable the fixed cover 24 and the inner end cover 15 not to interfere with each other when the wheel is in operation.

The fixing cover 24 also functions to ensure sealing between the controller assembly 20 and the vehicle body, while fixedly connecting the controller assembly 20 to the vehicle body. More specifically, as shown in fig. 2, the fixing cover 24 is a basin with a single-side opening, the outer surface of the arc-shaped sidewall of the fixing cover is provided with a first sealing groove 26, the side surface of the vehicle body casing is provided with a side plate, in order to accommodate a part of the controller assembly 20, the side plate is provided with a mounting hole, the edge of the side plate forming the mounting hole is embedded into the first sealing groove 26, at this time, the edge of the side plate and the first sealing groove 26 can be sealed in an interference fit or clamping manner, and the sealing here is also a primary sealing for the inside of the vehicle body. With the first seal slot 26 as a boundary, the controller assembly 20 is partially disposed within the vehicle body and partially disposed outside the vehicle body.

The fixed cover 24 is fixedly connected with the motor shaft 11, as shown in fig. 2, a second flat opening 243 adapted to the motor shaft 11 is provided on the fixed cover 24, so that the fixed cover 24 and the motor shaft 11 are relatively stationary; the edge of the second flat-mouth groove 243 is provided with a second protrusion 244, the second protrusion 244 is arranged to protrude toward the control circuit board 21, the second protrusion 244 abuts against the center of the side wall of the control circuit board 21, a certain distance is kept between the second protrusion 244 and the front surface of the control circuit board 21, and the contact with components on the control circuit board 21 is avoided.

The outer side of the fixed cover is provided with a fixed part, and the fixed cover is fixedly connected with the motor shaft through the fixed part and keeps the abutting state with the control circuit board; the control circuit board keeps the abutting state with the step under the action of the fixed cover. Preferably, the fixing part can be a clamp spring, and correspondingly, a positioning groove for fixing the clamp spring is arranged at the penetrating end of the motor shaft; or the fixing piece can be a nut, and the penetrating end of the motor shaft is provided with a thread matched with the nut.

Example two

Based on the above embodiment, the difference between this embodiment and the first embodiment is that the mounting portion includes a fixing base, the controller is a control circuit board structure, and includes a control circuit board and components thereon, the controller is fixedly connected with the penetrating end of the motor shaft through the fixing base, and other structures are the same as those in the first embodiment.

As shown in fig. 4 and fig. 5, the fixing seat 23 of the present embodiment is a long strip, the fixing seat 23 is a long strip, the center of the fixing seat 23 is provided with a flat structure for fixedly connecting the penetrating end 111 of the motor shaft 11, and the fixing seat 23 is provided with a first flat groove 231 adapted to the motor shaft 11, so that the fixing seat 23 and the motor shaft 11 are relatively stationary; a first protrusion 232 is arranged at the edge of the first flat-mouth groove 231, the first protrusion 232 is arranged to protrude towards the inner end cover, and the first protrusion 232 extends into the bearing exposure hole 153 and abuts against the outer side wall of the inner ring of the second bearing 16; the fixing member 25 is disposed outside the first flat slot 231, the fixing seat 23 is fixedly connected to the motor shaft 11 through the fixing member 25 and keeps a contact state with the inner ring of the second bearing 16, and meanwhile, the first protrusion 232 keeps the fixing seat 23 at a certain distance from the inner end cover to prevent the controller from contacting the inner end cover.

The controller is a circular control circuit board 21; the both ends of fixing base 23 are the arc surface, with the medial surface looks adaptation of controller, and fixing base 23 is fixed with the medial surface joint of controller. More specifically, the arc surfaces at the two ends of the fixing base 23 are provided with the slots 233, the width of the slots 233 is adapted to the thickness of the circular control circuit board 21, the inner side of the circular control circuit board 21 is provided with the notches 212 and the blocking platforms 213, the two notches 212 are arranged oppositely, the distance between the two notches is greater than or equal to the length of the fixing base 23, the fixing base 23 is inserted into the notches 212 and then rotates to enable the inner side edge of the circular control circuit board 21 to be clamped into the slots 233, and the rotation is continued until the inner side edge abuts against the blocking platforms 213. In the scheme, the fixing seat 23 enters from the position corresponding to the inner side notch 212 of the control circuit board 21, the clamping groove 233 and the inner edge of the annular control circuit board 21 are clamped and clamped after rotation, and the fixing seat 23 is limited by the baffle table 213.

EXAMPLE III

As shown in fig. 6 and 7, in this embodiment, the controller is a circuit board structure, and includes a control circuit board 21 and components thereon, the mounting portion includes a fixing seat 23, the controller is fixedly connected to the fixing seat 23, and the fixing seat 23 is fixedly connected to the penetrating end 111 of the motor shaft 11. As shown in fig. 6, the controller is fixed on the fixing seat 23, and the fixing seat 23 is fixedly connected with the penetrating end 111 of the motor shaft 11, which has the advantages of avoiding excessive processing of the control circuit board 21 of the controller, and reducing the cost because the fixing seat 23 can be processed in an injection molding manner. Preferably, the fixing base 23 may be made of a heat insulating material to prevent the motor shaft 11 from transferring heat of the in-wheel motor to the controller.

In this embodiment, as shown in fig. 6, the fixing base 23 is a disc, the fixing base 23 includes a first annular side plate 234 perpendicular to the plane plate, and the controller is a circular control circuit board 21; the position of the plane plate of the fixed seat 23 is provided with a first fastening hole 235, the controller is provided with a second fastening hole 214, and fasteners such as screws penetrate through the first fastening hole 235 and the second fastening hole 214 to fix the controller in the fixed seat 23. At this moment, the controller is arranged in the one side that fixing base 23 deviates from inner end cover 15, and fixing base 23 is the disc, and the front of controller sets up towards the opening direction of fixing base 23, makes things convenient for the pencil on the controller to cross the line.

Preferably, fixing base 23 and the outer side wall interval setting of interior end cover 15 avoid fixing base 23 to bump with rotatory interior end cover 15.

Preferably, as shown in fig. 6, the outer side wall of the inner end cap 15 is provided with a rotation groove 154, and the rotation groove 154 is matched with the size of the fixing seat 23, so that the fixing seat 23 is partially inserted into the rotation groove 154. It is noted that although the fixing seat 23 is partially inserted into the rotation groove 154, the fixing seat 23 is spaced apart from the outer sidewall of the inner end cap 15. The fixing seat 23 is slightly embedded in the inner end cap 15 in this way for the purpose of shortening the overall width of the wheel and the overall length of the motor shaft 11.

At this time, the fixing seat 23 also plays a role of sealing with the vehicle body, and simultaneously, the controller assembly is fixedly connected with the vehicle body. As shown in fig. 6, the outer surface of the first annular side plate 234 of the fixing seat 23 is provided with a first sealing groove 26, the side surface of the vehicle body casing is provided with a side plate, in order to accommodate a part of the controller assembly, a mounting hole is formed in the side plate, the edge of the side plate forming the mounting hole is embedded into the first sealing groove 26, at this time, the edge of the side plate and the first sealing groove 26 can be sealed in an interference fit or clamping manner, and the sealing here is also a primary sealing for the inside of the vehicle body. With the first seal slot 26 as a boundary, the controller assembly is partially disposed within the vehicle body and partially disposed outside the vehicle body. The opening of fixing base 23 is located the automobile body, and when fixing base 23 was sealed with the automobile body, still can seal the protection to the controller.

The fixing seat 23 is fixedly connected to the motor shaft 11, as shown in fig. 7, a second bearing mounting groove 152 is formed in the inner wall of the inner end cover 15, the second bearing mounting groove 152 has a bearing exposing hole 153, the diameter of the bearing exposing hole 153 is larger than that of the motor shaft 11, the motor shaft 11 penetrates through the bearing exposing hole 153, a second bearing is sleeved on the motor shaft 11 and placed in the second bearing mounting groove 152, and the outer side wall of the inner ring of the second bearing is exposed in the bearing exposing hole 153;

as shown in fig. 7, the fixing seat 23 is provided with a first flat slot 231 adapted to the motor shaft 11, so that the fixing seat 23 and the motor shaft 11 are relatively stationary; a first protrusion 232 is arranged at the edge of the first flat notch 231, the first protrusion 232 protrudes towards the inner end cover 15, and the first protrusion 232 extends into the bearing exposure hole 153 and abuts against the outer side wall of the inner ring of the second bearing; the fixing member 25 is disposed outside the first flat slot 231, the fixing seat 23 is fixedly connected to the motor shaft 11 through the fixing member 25 and keeps a contact state with the inner ring of the second bearing, and meanwhile, the first protrusion 232 keeps the fixing seat 23 at a certain distance from the inner end cap 15.

Preferably, the fixing part can be a clamp spring, and correspondingly, a positioning groove for fixing the clamp spring is arranged at the penetrating end of the motor shaft; or the fixing piece can be a nut, and the penetrating end of the motor shaft is provided with a thread matched with the nut.

The controller is exposed out of the vehicle body and protected by the vehicle body.

Example four

Based on third embodiment, in order to further improve the leakproofness of controller, the installation department of this embodiment still includes fixed lid, and the difference of this embodiment and third embodiment lies in, fixed lid is unilateral open-ended basin type, and the size is greater than the size of fixing base, and fixed lid covers on fixing base and controller, can utilize fixed lid and automobile body casing fixed connection that seals, and the first annular curb plate surface of the fixing base of disc does not be equipped with first seal groove.

As shown in fig. 8 to 10, the fixing cover 24 and the outer wall of the inner end cover 15 form a second accommodating cavity for accommodating the fixing seat 23 and the controller.

Preferably, as shown in fig. 9, the fixing base 23 is a disc shape, the controller is a circular ring-shaped control circuit board 21, a first fastening hole 235 is formed in a planar plate 241 of the fixing base 23, a second fastening hole 214 is formed in the controller, a first fastening column 246 is formed in the fixing cover 24, the first fastening column 246 is located on the inner wall of the fixing cover 24 and protrudes toward the fixing base 23, a third fastening hole 247 is formed in the first fastening column 246, and a fastening member penetrates through the third fastening hole 247, the second fastening hole 214 and the first fastening hole 235 to fix the fixing cover 24 and the controller on the fixing base 23, so that the fixing base 23, the fixing cover 24 and the controller form a stable integral structure, thereby improving the installation stability of the controller.

The main function of the fixed cover is to protect the controller and to be connected with the vehicle body in a sealing way. The controller passes through the end of wearing out of fixing base and motor shaft, and fixed lid covers on the controller, can be at the in-process protection controller of balance car wheel transportation, storage and assembly, avoids control circuit board and components and parts on it to receive external force extrusion damage, drop.

More specifically, as shown in fig. 10, the components on the control circuit board 21 are disposed toward the fixing cover 24 and away from the inner end cover 15, and at the same time, the opening of the fixing cover 24 is disposed toward the inner end cover 15 and forms a second accommodating cavity with the outer wall of the inner end cover 15 to accommodate the controller. The second receiving chamber is required to maintain a relatively sealed environment to prevent ingress of water from damaging the controller. Meanwhile, the inner end cap 15 needs to rotate along with the wheel, and the fixing cap 24 cannot be directly connected with the inner end cap 15. Preferably, a rotating groove is formed in the outer wall of the inner end cover 15, a second annular side plate 242 is arranged on one surface, facing the inner end cover 15, of the fixed cover 24, the second annular side plate 242 is arranged in an annular shape perpendicular to the plane of the fixed cover 24 to form an arc-shaped side wall of the fixed cover 24, the width of the second annular side plate 242 is larger than the thickness of the control circuit board 21, and a space for installing a controller is provided in the second accommodating cavity. The second annular side plate 242 is matched with the rotary groove and is circular; the edge of the second annular side plate 242 extends into the rotation groove and is spaced apart from the rotation groove, three surfaces of the second annular side plate 242 maintain a small distance from the rotation groove, and the circular second annular side plate 242 and the rotation groove allow the fixed cover 24 and the inner end cover 15 not to interfere with each other when the wheel is in operation.

The fixing cover 24 also functions to ensure sealing between the controller assembly and the vehicle body while fixedly connecting the controller assembly to the vehicle body. More specifically, as shown in fig. 8, the fixing cover 24 is a basin with a single-side opening, the outer surface of the arc-shaped sidewall of the fixing cover is provided with a first sealing groove 26, the side surface of the vehicle body casing is provided with a side plate, in order to accommodate a part of the controller assembly, the side plate is provided with a mounting hole, the edge of the side plate forming the mounting hole is embedded into the first sealing groove 26, at this time, the edge of the side plate and the first sealing groove 26 can be sealed in an interference fit or clamping manner, and the sealing here is also a primary sealing for the inside of the vehicle body. With the first seal slot 26 as a boundary, the controller assembly is partially disposed within the vehicle body and partially disposed outside the vehicle body.

At this time, the fixing base and the fixing cover are both fixedly connected with the penetrating end of the motor shaft, and more specifically, as shown in fig. 9, the inner wall of the inner end cover 15 is provided with a second bearing installation groove 152, the second bearing installation groove 152 is provided with a bearing exposing hole 153, the motor shaft 11 penetrates through the bearing exposing hole 153, the second bearing is sleeved on the motor shaft 11 and placed in the second bearing installation groove 152, and the outer side wall of the inner ring of the second bearing is exposed in the bearing exposing hole 153;

the fixed seat 23 is provided with a first flat slot 231 matched with the motor shaft 11, so that the fixed seat 23 and the motor shaft 11 are relatively static; the edge of the first flat notch groove 231 is provided with a first protrusion 232, the first protrusion 232 is arranged towards the inner end cover 15 in a protruding mode, the first protrusion 232 extends into the bearing exposure hole 153 and is abutted to the outer side wall of the inner ring of the second bearing, the first protrusion 232 enables the fixed seat 23 to keep a certain distance with the inner end cover 15, and the fixed seat 23 is prevented from being in contact with the rotating inner end cover 15;

the fixed cover 24 is provided with a second flat opening groove 243 matched with the motor shaft 11, so that the fixed cover 24 and the motor shaft 11 are relatively static; a second protrusion 244 is arranged at the edge of the second flat slot 243, the second protrusion 244 protrudes towards the fixing seat 23, and the second protrusion 244 abuts against the side wall of the fixing seat 23 to form a space for accommodating the controller, so as to protect the control circuit board 21 and components thereon;

a fixing piece 25 is arranged on the outer side of the fixing cover 24, and the fixing cover 24 is fixedly connected with the motor shaft 11 through the fixing piece 25 and keeps the abutting state with the fixing seat 23; the fixing base 23 is held in abutment with the inner race of the second bearing by the fixing cover 24.

Preferably, as shown in fig. 10, the fixing seat 23 is spaced from the outer side wall of the inner end cap 15, so as to prevent the fixing seat 23 from touching the rotating inner end cap 15.

Preferably, the outer side wall of the inner end cover is provided with a rotating groove, and the rotating groove is matched with the size of the fixing seat, so that the fixing seat is partially arranged in the rotating groove. It is noted that although the fixing seat is partially embedded in the rotating groove, the fixing seat is still spaced from the outer side wall of the inner end cover. In this way, the fixing base is slightly embedded in the inner end cap in order to shorten the overall width of the wheel and the overall length of the motor shaft.

EXAMPLE five

As shown in fig. 11 to 13, in the embodiment, the mounting portion includes a fixing seat 23 and a fixing cover 24, the controller is fixed on the fixing seat 23 or located between the fixing cover 24 and the fixing seat 23, and the fixing cover 24 and the fixing seat 23 surround the controller separately, so as to achieve the effect of sealing protection, and prevent water stain and impurities from entering and damaging the control circuit board 21. By adopting the structure, the controller can be prevented from being damaged in the transportation process and the assembly process. Preferably, the fixing base 23 may be made of a heat insulating material to prevent the motor shaft 11 from transferring heat of the in-wheel motor to the controller.

In the present embodiment, the fixing base 23 and the fixing cover 24 have the same size, the first annular side plate 234 of the fixing base 23 protrudes toward the fixing cover 24, the second annular side plate 242 of the fixing cover 24 protrudes toward the fixing base 23, and the diameters of the first annular side plate 234 and the second annular side plate 242 are the same, a sealing structure is provided between the fixing base 23 and the fixing cover 24, the sealing structure includes a convex edge and a second sealing groove, one of the convex edge and the second sealing groove is provided on the fixing base 23, and the other one is correspondingly provided on the fixing cover 24; the convex edge is matched and sealed with the second sealing groove. More specifically, in a specific embodiment, the convex edge is disposed on a surface of the first annular side plate 234 facing the first annular side plate 234, the second sealing groove is disposed on a surface of the first annular side plate 234 facing the second annular side plate 242, and the convex edge is engaged with the second sealing groove, so that a relatively sealed space is formed between the fixing base 23 and the fixing cover 24 to protect the controller; in another embodiment, as shown in fig. 13, the second sealing groove 28 is disposed on a surface of the first annular side plate 234 facing the first annular side plate 234, and the protruding edge 27 is disposed on a surface of the first annular side plate 234 facing the second annular side plate 242, and the protruding edge is engaged with the second sealing groove, so that a relatively sealed space is formed between the fixing seat 23 and the fixing cover 24 to protect the controller. The fixing cover 24 and the fixing seat 23 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, the fixing base 23 is a disc shape, the controller is a circular ring-shaped control circuit board 21, a first fastening hole 235 is formed in a planar plate 241 of the fixing base 23, a second fastening hole 214 is formed in the controller, a first fastening column 246 is formed in the fixing cover 24, the first fastening column 246 is located on the inner wall of the fixing cover 24 and protrudes toward the fixing base 23, a third fastening hole 247 is formed in the first fastening column 246, and a fastening member penetrates through the third fastening hole 247, the second fastening hole 214 and the first fastening hole 235 to fix the fixing cover 24 and the controller on the fixing base 23, so that the fixing base 23, the fixing cover 24 and the controller form a stable integral structure, thereby improving the installation stability of the controller.

In the embodiment, the vehicle body can be fixedly connected with the fixed seat 23 or the fixed cover 24 in a sealing way. More specifically, the outer surface of the first annular side plate 234 of the fixing seat 23 or the outer surface of the second annular side plate 242 of the fixing cover 24 is provided with a first sealing groove 26, the side surface of the vehicle body casing is provided with a side plate, in order to accommodate a part of the controller assembly, a mounting hole is formed in the side plate, the edge of the side plate forming the mounting hole is embedded into the first sealing groove 26, at this time, the edge of the side plate and the first sealing groove 26 can be sealed in an interference fit or clamping manner, and the sealing here is also a primary sealing for the inside of the vehicle body. With the first seal slot 26 as a boundary, the controller assembly is partially disposed within the vehicle body and partially disposed outside the vehicle body.

At this time, the fixing base 23 and the fixing cover 24 are both fixedly connected to the penetrating end 111 of the motor shaft 11, and more specifically, as shown in fig. 12, the inner wall of the inner end cover 15 is provided with a second bearing installation groove 152, the second bearing installation groove 152 is provided with a bearing exposing hole 153, the motor shaft 11 penetrates through the bearing exposing hole 153, the second bearing is sleeved on the motor shaft 11 and placed in the second bearing installation groove 152, and the outer side wall of the inner ring of the second bearing is exposed in the bearing exposing hole 153;

Preferably, as shown in fig. 11, the outer side wall of the inner end cap 15 is provided with a rotation groove 154, and the rotation groove 154 is matched with the size of the fixing seat 23, so that the fixing seat 23 is partially inserted into the rotation groove 154. It is noted that although the fixing seat 23 is partially inserted into the rotation groove 154, the fixing seat 23 is spaced apart from the outer sidewall of the inner end cap 15. The fixing seat 23 is slightly embedded in the inner end cap 15 in this way for the purpose of shortening the overall width of the wheel and the overall length of the motor shaft 11.

Preferably, in the first to fifth embodiments, the controller further includes an aluminum sealing structure in addition to the circuit board, and the aluminum sealing structure covers the circuit board, so as to eliminate electromagnetic interference of the in-wheel motor. And an exposure hole for the wire harness of the controller to penetrate out or expose is arranged on the aluminum shell sealing structure.

Based on the plurality of embodiments, the invention also discloses a structure of the balance car, which comprises a car body, wherein wheels are arranged on two sides of the car body, at least one wheel is the wheel with the controller component in the embodiments, a motor shaft of the hub motor is fixedly connected with the car body, and the controller component is partially arranged in the car body and is in sealing connection with the car body; the vehicle body is provided with a plurality of components, and the components are connected with the controller and perform signal transmission. The parts include indicator light, decorative lamp, switch, power supply, etc. When the wheels on the two sides of the vehicle body are the wheels with the controller assemblies, the two controllers are electrically connected or wirelessly connected in the vehicle body, wherein one controller is a main controller, and the other controller is a sub-controller.

The invention arranges the controller component part in the vehicle body, so that the controller component is directly connected with the vehicle body, thereby increasing the contact area, strengthening the connection between the controller component and the vehicle body as well as the wheels and the vehicle body, shortening the length of a motor shaft and the whole width of the vehicle body of the balance vehicle, and leading the structure of the balance vehicle to be more compact.

The controller subassembly in the automobile body is arranged in for the installation part, and the side of automobile body casing is equipped with the mounting hole, and the lateral wall and the mounting hole sealing joint of controller subassembly are inside to be equipped with the holding tank that holds partial controller subassembly of automobile body casing. According to the embodiment, the edge of the side plate forming the mounting hole is matched and clamped with the fixed seat in the controller assembly or the first sealing groove in the fixed cover, so that the controller assembly is sealed with the vehicle body shell.

For making things convenient for controller subassembly and motor shaft and automobile body fixed connection, automobile body shell includes epitheca and inferior valve, and the mounting hole sets up between the first curb plate of epitheca and the second curb plate of inferior valve, is equipped with first seal groove 26 on the lateral wall of controller subassembly 20, and during the installation, the first curb plate and the second curb plate that form the mounting hole imbed first seal groove respectively in to realize the sealed of controller subassembly and automobile body.

EXAMPLE six

As shown in fig. 6, 14 to 16, in the present embodiment, the balance car wheel is disposed at a side of the car body housing and is fixedly connected to the car body housing through a motor shaft, more specifically, the inner surface of the upper shell 31 or the lower shell 32 of the car body housing 30 is provided with a motor shaft fixing seat 35 and a pressing plate 351, the motor shaft fixing seat 35 is provided with a motor shaft groove 352, the middle part of the pressing plate 351 is adapted to one surface of the motor shaft, and the motor shaft is fixed in the motor shaft groove 352 through a locking member such as a screw.

Due to the existence of the motor shaft fixing seat, in order to form the accommodating groove, the motor shaft fixing seat needs to move inwards properly, more specifically, when the inner surface of the upper shell 31 is provided with the motor shaft fixing seat 35, a recess 34 is arranged between the outer side wall of the motor shaft fixing seat 35 and the first side plate 311 of the upper shell 31, at this time, a part which is not tightly attached to the second side plate 321 is arranged on the inner side of the second side plate 321 of the lower shell 32, a corresponding part of the second side plate 321 can be directly hollowed out, a mounting hole 33 is formed on the part corresponding to the first side plate 311, the upper part of the accommodating groove 331 is formed by the recess 34 on the upper shell 31, and the lower part of the accommodating groove 331 is formed by the corresponding position on the inner side of the second side plate 321.

When the internal surface of inferior valve is equipped with the motor shaft fixing base, be equipped with between the lateral wall of motor shaft fixing base and the second curb plate of inferior valve sunken, at this moment, the first curb plate of epitheca inboard or set up the part not hugged closely with first curb plate, can directly dig out first curb plate corresponding part, correspond the part with the second curb plate and form the mounting hole, the upper portion of holding tank is formed by the first curb plate that digs out corresponding part, the lower part of holding tank is formed by the sunken of inferior valve.

The shape of holding tank and the partial looks adaptation in the automobile body is arranged in to the controller subassembly, and the edge of mounting hole stretches into first seal groove, seals whole mounting hole, prevents that impurity from taking into inside the balance car from the holding hole, damaging various parts. Stretch into the mounting hole with partly of controller subassembly, also stretch into the inside of automobile body casing, shortened the distance of wheel and balance car curb plate outer wall, just also shortened the width of whole balance car, for original balance car, change in the design is less, comparatively saves the cost.

EXAMPLE seven

As shown in fig. 17, 18 and 21, the present embodiment is different from the sixth embodiment in that an inner concave plate is added to further enhance the sealing performance of the vehicle body. More specifically, a first inner concave plate 312 is arranged inside the first side plate 311 of the upper shell 31, and the first inner concave plate 312 and the first side plate 311 form a first inner groove 313; a second inner concave plate 322 is arranged on the inner side of the second side plate 321 of the lower shell 32, and a second inner groove 323 is formed by the second inner concave plate 322 and the second side plate 321; the first inner groove 313 and the second inner groove 323 form a receiving groove 331 that receives a portion of the controller assembly 20.

In the specific implementation mode that the motor shaft fixing seat is arranged on the inner surface of the upper shell, the first inner concave plate corresponds to the outer side wall of the motor shaft fixing seat, the first inner concave groove corresponds to the recess in the sixth embodiment, the first inner concave groove forms the upper half part of the accommodating groove, and the second inner concave groove forms the lower half part of the accommodating groove; in the specific implementation mode that the motor shaft fixing base is arranged on the inner surface of the lower shell, the second inner concave plate is equivalent to the outer side wall of the motor shaft fixing base, the second inner concave groove is equivalent to the concave part in the sixth embodiment, the first inner concave groove forms the upper half part of the accommodating groove, and the second inner concave groove forms the lower half part of the accommodating groove.

The first concave plate or the second concave plate is arranged to enhance the inner side barrier function of the casing, and preferably, in some specific embodiments, as shown in fig. 22, edges of the first concave plate 312 and the second concave plate 322 are attached to each other, and when the first side plate 311 and the second side plate 321 and the first sealing groove leak, the first concave plate 312 and the second concave plate 322 may serve as a supplementary sealing structure, so as to further complete the sealing function and the barrier function.

It is noted that the sixth and seventh embodiments can be combined with the above-described embodiments to form new embodiments.

Based on the above-mentioned embodiments, the cost of wireless communication transmission is high, and for cost reasons, the controller in the controller assembly located on the wheel needs to be connected with a component inside the vehicle body or with a controller on the other side of the vehicle body through a wire harness, and therefore, a wire passing structure is needed, and the wire passing structure has various embodiments, several of which will be described below by way of example.

Example eight

The in-wheel motor comprises a hub, a stator and a rotor, wherein the stator and the rotor are positioned in the hub, and in order to control the work of the stator and the rotor, the in-wheel motor is provided with a first wire harness 17, the starting end of the first wire harness 17 is positioned in the hub and needs to be led out of a wheel, therefore, as shown in fig. 10 and 13, the motor shaft 11 is provided with a through hole 113 and a second inlet hole 115, and the second inlet hole 115 is positioned in the hub 14 and is communicated with the through hole 113, and is used for allowing the first wire harness 17 of the in-wheel motor 10 to penetrate through and penetrate out of the motor shaft 11 through the through hole 113. The motor shaft 11 is fixedly connected with the vehicle body shell 30, a motor shaft hole 37 is formed in a side plate of the vehicle body shell 30, the motor shaft extends into the vehicle body shell 30 through the motor shaft hole 37, and meanwhile, the first wiring harness is also led into the vehicle body shell 30.

As shown in FIG. 10, in this embodiment, a first inlet hole 114 is additionally formed on the motor shaft 11, and the first inlet hole 114 communicates with the through hole 113, and the through hole and the first inlet hole of the motor shaft are used for passing through the wire. The first inlet hole is formed at the penetrating end of the motor shaft, is located outside the inner end cap, corresponds to the position of the controller assembly 20, and is used for the second harness 22 of the controller assembly 20 to penetrate through and penetrate out of the motor shaft 11 from the end of the through hole 113. After entering the body shell 30, the first wire harness 17 is electrically connected to the second wire harness 22, and at the same time, the second wire harness 22 is also electrically connected to a light bar, a horn, and a second wire harness of another controller of the balance car wheel inside the body.

When the controller assembly is as shown in the first and second embodiments, the first access hole is located between the control circuit board and the fixing cover; when the controller assembly is as shown in the third embodiment, the first access hole is located on the outer side of the fixed seat and corresponds to the front position of the control circuit board; when the controller assembly is as shown in the fourth embodiment and the fifth embodiment, the first access hole is located between the fixed base and the fixed cover. Preferably, as shown in fig. 2 and 10, the fixing cover 24 forms a space for accommodating the controller with the fixing base 23 through the second protrusion 244, the second protrusion 244 is provided with a wire passing notch 245, the wire passing notch 245 corresponds to the first access hole 114, the second wire harness 22 passes through the wire passing notch 245 and the first access hole 114 and enters the through hole 113, the second wire harness is prevented from being exposed outside the fixing base and the fixing cover, and the sealing performance of the controller assembly is further improved.

Based on this embodiment, first pencil and second pencil all get into the automobile body casing through the motor shaft in, need not to set up the hole except that the motor shaft hole on the curb plate of automobile body casing, have simplified the equipment process of modular balance car wheel with the balance car automobile body, have strengthened sealed effect like this, even under the curb plate of automobile body casing and the condition that first seal groove became invalid, the sealed between the casing is still effectual about the balance car.

Example nine

As shown in fig. 19 to fig. 21, the main difference between the present embodiment and the eighth embodiment is that a wire passing slot 116 is provided on the penetrating end 111 of the motor shaft 11 for accommodating the second wire harness 22 of the controller, the starting end of the wire passing slot 116 corresponds to the installation position of the controller, and the tail end of the wire passing slot corresponds to the tail end of the motor shaft; other structures, such as the structure of the hub motor, the through hole and the second access hole on the motor shaft, the structure of the vehicle body shell and the like are the same as those of the eighth embodiment.

When the controller assembly is as shown in the first embodiment and the second embodiment, the starting end of the wire passing slot is positioned between the control circuit board and the fixed cover; when the controller assembly is as shown in the third embodiment, the starting end of the wire passing groove is positioned outside the fixed seat and corresponds to the front position of the control circuit board; when the controller assembly is as shown in the fourth embodiment and the fifth embodiment, the starting end of the wire passing slot is located between the fixed seat and the fixed cover.

Preferably, accomodate and to cover on the pencil of crossing in the line fluting and have viscose layer (not drawn), place after crossing the line fluting at first pencil and second pencil, can carry out the encapsulating to crossing the line fluting, form the viscose layer, not only can protect first pencil and second pencil, form the buffer layer, avoid causing the damage when the crimping motor shaft, still can seal with the cooperation of motor shaft hole, prevent that water stain and impurity from crossing the line fluting and getting into in the automobile body. As shown in fig. 19, the motor shaft entering the body housing 30 is fixed on the motor shaft fixing seat 35 through the pressing plate 351, the arc-shaped portion 353 is arranged in the middle of the pressing plate 351 and is matched with the wire passing groove on the motor shaft to form a passage for the wire harness to pass through, and the arc-shaped portion 353 is matched with the viscose layer to compress and fix the motor shaft. The adhesive layer may also prevent the press sheet 351 from crushing the first wire harness and the second wire harness when crimping.

After the first wire harness enters the vehicle body shell, the first wire harness is electrically connected with the second wire harness, and meanwhile, the second wire harness is also electrically connected with a lamp bar and a loudspeaker inside the vehicle body and the second wire harness of a controller of another balance vehicle wheel.

In this embodiment, first pencil and second pencil all pass through the motor shaft and get into in the automobile body casing, need not to set up the hole except that the motor shaft hole on the curb plate of automobile body casing, have simplified the equipment process of modular balance car wheel with the balance car automobile body, have strengthened sealed effect like this, even under the curb plate of automobile body casing and the condition that first seal groove became invalid, the sealed between the casing is still effectual about the balance car.

Example ten

As shown in fig. 6, 11 and 14, the wire passing structure of the present embodiment does not need to change the structure of the motor shaft, but the control circuit board 21 of the controller is provided with a wire connection jack 215 for connecting the controller with the components in the vehicle body. Because the controller assembly 20 is partially disposed in the body housing 30, the wiring socket 215 can be exposed in the body housing 30, the first wire harness of the hub motor enters the body housing 30 through the motor shaft and is plugged into one of the wiring sockets, and other parts in the body can also be plugged into the wiring socket, so as to realize signal transmission and control.

When the controller assembly is as in the first embodiment, the second embodiment, the fourth embodiment and the fifth embodiment, as shown in fig. 11, the controller assembly 20 includes the fixing cover 24, and the fixing cover 24 covers the control circuit board 21, in order to expose the wiring insertion holes 215 in the vehicle body casing 30, the fixing cover 24 is provided with a plurality of windows 248, and the wiring insertion holes 215 are in one-to-one correspondence with the windows 248, and pass through the windows 248 and are exposed.

When the controller assembly is as shown in the third embodiment, as shown in fig. 6, the fixing cover 24 is not covered on the control circuit board 21, and the front surface of the control circuit board 21 is disposed toward the vehicle body casing 30, and the wiring receptacle 215 thereof can be directly exposed in the vehicle body casing 30.

Meanwhile, when the vehicle body shell is as shown in the sixth embodiment, the wiring jacks and the motor shaft fixing seats are distributed in a staggered mode, so that wiring is facilitated; when the motor shaft fixing seat is positioned on the inner side of the first side plate of the upper shell, the wiring socket is arranged on the control circuit board at a position corresponding to the lower shell and corresponds to the lower half part of the accommodating groove; when the motor shaft fixing base is located the second side plate of inferior valve inboard, wiring socket sets up on control circuit board and the position that the epitheca corresponds, corresponds with the first half of holding tank. When the vehicle body shell is as shown in embodiment seven, the wiring sockets and the motor shaft fixing seats are distributed in a staggered manner, and when the motor shaft fixing seat 35 is located on the inner side of the first inner concave plate 312 of the upper shell, as shown in fig. 17, a groove for a wire harness to pass through is formed in the edge of the second inner concave plate 322 close to the first inner concave plate 312, and the groove and the first inner concave plate 312 form a wire passing groove 324; when the motor shaft fixing seat is positioned on the inner side of the second inner concave plate of the lower shell, a groove for a wire harness to pass through is formed in the edge, close to the second inner concave plate, of the first inner concave plate, and the groove and the second inner concave plate form a wire passing groove.

Preferably, the controller is the ring shape circuit board, and wiring socket has certain distance along the marginal arc distribution of ring shape circuit board between the wiring socket, makes things convenient for the wiring plug.

Because a plurality of pencil and wiring socket peg graft, press the pencil when avoiding epitheca and inferior valve to fold, preferably, the inboard of epitheca or inferior valve is equipped with the pencil buckle for comb the pencil of being connected with wiring socket. As shown in fig. 15, at least one wire harness buckle 36 is located on the side of the motor shaft fixing seat 35, and the wire harness is stored by reasonably utilizing the side wall of the motor shaft fixing seat 35. More specifically, the harness buckle 36 includes a fixing portion 362 and a resilient piece 361, and the resilient piece 361 is disposed opposite to the side wall of the motor shaft fixing base 35 at a distance and has an opening for the harness to enter.

During the installation, at motor shaft and motor shaft fixing base installation fixed back, the location is accomplished with epitheca or inferior valve to the controller subassembly, can peg graft other pencil and wiring socket in first pencil and the automobile body casing, then will peg graft among the opening between pencil embedding shell fragment and the motor shaft fixing base lateral wall, because the shell fragment has certain elasticity, after in the pencil gets into the pencil buckle, can effectively bind and tie up the pencil, avoid first curb plate, second curb plate or first indent board, the extrusion pencil of second indent board. Of course, the wire harness buckle can also be arranged at other positions, such as the inner surface of the upper shell or the lower shell, the side edge of the spring mounting hole and the like.

EXAMPLE eleven

The embodiment is based on the scheme that the controller assembly comprises the wire passing structure of the fixing cover, and the wire passing structure of the embodiment does not need to change the structure of the motor shaft. The controller assembly is partially disposed in the vehicle body housing, and the flat plate of the fixing cover is disposed in the vehicle body housing, as shown in fig. 23, the flat plate of the fixing cover 24 is provided with a first wire passing hole 249 for leading out the second wire harness 22 of the controller from the fixing cover 24. When the vehicle body casing is as shown in the sixth embodiment, the second wire harness can be directly connected with other wire harnesses. As shown in fig. 22, if the vehicle body shell 30 is as in the seventh embodiment, the first concave inner panel 312 or the second concave inner panel 322 is provided with a second wire passing hole 325. More specifically, the second wire passing hole 325 needs to avoid the motor shaft fixing seat 35 and may be located on the left side, right side, upper side or lower side of the motor shaft hole 37, preferably, the second wire passing hole may be disposed on the edge of the first concave plate or the second concave plate, and the second wire harness on the control circuit board may include a connecting seat to be fastened with a connecting head of another component of the balance car. The first wire harness of the hub motor penetrates out of the through hole in the motor shaft and enters the vehicle body shell to be connected with the second wire harness on the control circuit board.

Because a plurality of pencil are connected with the second pencil, press the pencil when avoiding epitheca and inferior valve to fold, preferably, the inboard of epitheca or inferior valve is equipped with the pencil buckle for comb the pencil of being connected with wiring socket. As shown in fig. 15, at least one wire harness buckle 36 is located on the side of the motor shaft fixing seat 35, and the wire harness is stored by reasonably utilizing the side wall of the motor shaft fixing seat 35. More specifically, the harness buckle 36 includes a fixing portion 362 and a resilient piece 361, and the resilient piece 361 is disposed opposite to the side wall of the motor shaft fixing base 35 at a distance and has an opening for the harness to enter.

The second wire harness penetrates out of the first wire passing hole and can be assembled when the balance car wheel is assembled, after the balance car wheel is assembled, a connecting seat is arranged at the end part of the second wire harness, and the modularized balance car wheel and the car body can be directly assembled and fixed during installation; after motor shaft and motor shaft fixing base installation are fixed, the location is accomplished with epitheca or inferior valve to the controller subassembly, cross the line hole with the second and introduce in the automobile body casing, first pencil is connected with second pencil electricity, then utilize the pencil buckle to comb the second pencil neatly, be connected with the inside part of balance car, then accomplish the installation of epitheca and inferior valve fixed, the edge laminating of first curb plate and second curb plate is sealed, perhaps, the edge laminating of first indent board and second indent board is sealed, accomplish the operation that the second pencil of control circuit board got into the automobile body.

Example twelve

The main reason that the second wire harness of the control circuit board has wire passing difficulty is as follows: in the embodiments, the size of the through hole of the motor shaft or the size of the second wire passing hole cannot be smoothly passed through by the connecting seat, so that the problem of difficult wire passing is caused; meanwhile, the condition that the assembly efficiency is influenced by a plurality of wire harnesses exists.

Therefore, the signal switching function on the control circuit board is independent, so that the number of the wire harnesses and the size of the connecting seat are reduced. More specifically, in the embodiment, the adapter plate is arranged in the vehicle body, the multiple signals can be transmitted to the control circuit board through one signal line in a time division multiplexing mode or a frequency division multiplexing mode, and the second wiring harness of the control circuit board can only comprise one signal line and one power line, so that the cost is saved; in a specific embodiment, the signal line and the power line can be combined into one, and the number of the second wire harnesses can be reduced to the minimum. The patch cord passes through first hand-hole and the through-hole on the motor shaft and is connected with the keysets. The position of the first access opening can be referred to in the eighth embodiment.

The signal pencil in the balance car includes: lamp plate pencil, loudspeaker pencil, charging harness, switch button pencil, loudspeaker pencil, bluetooth pencil, photoelectric switch pencil etc..

As shown in fig. 24 and 25, the adapter board 45 of the present embodiment may be disposed in the battery pack 40, and performs signal adapter by using a processing unit on the battery protection circuit board 43. More specifically, the battery assembly 40 includes a battery box 41 and a cell structure 42, the cell structure 42 is located in the battery box 41, and a battery protection circuit board 43 is located on the cell structure 42, as shown in the drawing, the cell structure 42 of the present embodiment is divided into two layers, the battery protection circuit board 43 is disposed between the two layers of cells, adapter sockets 44 are disposed on two sides or one side of the protection circuit board, and are used for plugging in wire harnesses such as the first wire harness 17, the second wire harness 22, and the signal harness, and signals of the adapter sockets 44 are processed by a processing unit on the battery protection circuit board 43. Of course, the protective circuit board may be disposed above or below the cell structure 42.

The battery case 41 is connected to the upper case through the battery connecting portion, and since both sides are the arc around the lower case, the concave portion 411 can be designed to the corresponding both sides of battery case 41 to the height of balance car has been shortened simultaneously to the arc structure of cooperation lower case. Adapter socket 44 can set up in depressed part 411, the space that make full use of depressed part 411 vacates, simultaneously, still can set up card line structure on the battery case 41 outer wall, is favorable to the arrangement pencil.

In the case where the adapter socket 44 is provided in the recess 411, the height or width of the balance car is not increased as compared with the case where the adapter socket 44 is provided in another portion, and the parts of the balance car can be easily wired to the battery case 41. The battery protection circuit board 43 is provided with an adapter socket 44 at a corresponding position of the concave portion 411, and the adapter socket 44 passes through a hole on the battery box 41 and is exposed to the outside, so that the plug-in connection of each component of the balance car is facilitated.

As shown in fig. 26, the adapter plate 45 of this embodiment may also be independently disposed in the vehicle body, the adapter plate 45 is independently disposed in the adapter plate 45, and the adapter plate 45 is fixed in the vehicle body housing by screws, etc., at this time, the adapter plate 45 may be disposed in the same vehicle body as the battery assembly 40, or may be disposed in different vehicle bodies, so as to make the internal components of the balance vehicle uniformly distributed and facilitate the insertion of the wiring harness; the number of the adapter plates 45 can be one or two, so that the plugging requirements of the controller assemblies on two sides of the balance car are met. The adapter plate 45 may also be provided with an adapter socket 44 for inserting a first harness 17, a second harness 22, a signal harness, and other harnesses.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. A balance car wheel comprises a hub motor and a balance car controller component, and is characterized in that,

2. The balance vehicle wheel of claim 1, wherein: the controller includes the circuit board, the installation department includes flat mouthful of structure and mounting in the middle of the circuit board, be equipped with the step on the end of wearing out of motor shaft, the shape of flat mouthful of structure with the shape looks adaptation of wearing out the end, the controller passes through flat mouthful of structure with the end joint of wearing out of motor shaft, and under the effect of mounting with the step counterbalance location.

3. The balance vehicle wheel of claim 2 wherein: the mounting part further comprises a fixed cover, and the fixed cover covers the controller; the side of the fixed cover is provided with a first sealing groove used for being clamped and sealed with a shell of the vehicle body.

4. The balance vehicle wheel of claim 3 wherein: the outer walls of the fixed cover and the inner end cover form a second accommodating cavity for accommodating the controller; 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.

5. The balance vehicle wheel of claim 1, wherein: the installation department includes the fixing base, the controller with fixing base fixed connection, the fixing base with the end fixed connection that pierces through of motor shaft.

6. The balance vehicle wheel of claim 5, wherein: the fixing seat comprises a first annular side plate perpendicular to the plane plate, and a first sealing groove is formed in the outer surface of the first annular side plate and used for being connected with a shell of the vehicle body in a clamping mode to seal.

7. The balance vehicle wheel of claim 5, wherein: the mounting part also comprises a fixed cover, and the controller is positioned between the fixed cover and the fixed seat; the side face of the fixed seat or the fixed cover is provided with a first sealing groove used for being clamped and sealed with a shell of the vehicle body.

8. The balance vehicle wheel of claim 7 wherein: the outer walls of the fixing cover and the inner end cover form a second accommodating cavity for accommodating the fixing seat and the controller; 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.

9. The balance vehicle wheel of claim 7 wherein: the fixed seat and the outer side wall of the inner end cover are arranged at intervals;

10. The balance vehicle wheel of claim 5, wherein: the outer side wall of the inner end cover is provided with a rotating groove, and the rotating groove is matched with the fixed seat in size, so that the fixed seat is partially arranged in the rotating groove.

11. The balance vehicle wheel of claim 7 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;

12. The balance vehicle wheel of claim 5, 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;

13. The balance car wheel according to claim 2 or 11 or 12 wherein: the fixing piece is a clamp spring, and correspondingly, a positioning groove for fixing the clamp spring is arranged at the penetrating end of the motor shaft; or the fixing piece is a nut, and the penetrating end of the motor shaft is provided with a thread matched with the nut.

14. The balance vehicle wheel of claim 5, wherein: the controller is characterized in that the fixing seat is disc-shaped, the controller is a circular circuit board, a first fastening hole is formed in a plane plate of the fixing seat, a second fastening hole is formed in the controller, and the controller is fixed on the fixing seat through the first fastening hole and the second fastening hole by penetrating through the fastening piece.

15. The balance vehicle wheel of claim 7 wherein: the fixing base is disc-shaped, the controller is a circular circuit board, a first fastening hole is formed in a plane plate of the fixing base, a second fastening hole is formed in the controller, a first fastening column is arranged on the fixing cover, the first fastening column is located on the inner wall of the fixing cover and protrudes towards the fixing base, a third fastening hole is formed in the first fastening column, and a fastening piece penetrates through the third fastening hole, the second fastening hole and the first fastening hole to fix the fixing cover and the controller on the fixing base.

16. The balance vehicle wheel of claim 6 wherein: the controller comprises a plurality of wiring sockets arranged towards the vehicle body, and the wiring sockets are exposed in the vehicle body.

17. The balance vehicle wheel according to claim 3 or 7, wherein: the controller includes a plurality of wiring sockets that set up towards the automobile body, fixed lid is close to be equipped with a plurality of windows on the one side of automobile body, the wiring socket with the window one-to-one to pass the window is in expose in the automobile body.

18. The balance vehicle wheel of claim 7 wherein: the motor shaft is provided with a through hole and a first inlet hole, the first inlet hole is located between the fixing seat and the fixing cover and corresponds to the controller in position, and the first inlet hole is communicated with the through hole and used for leading out a wiring harness of the controller from the penetrating end of the motor shaft.

19. The balance vehicle wheel of claim 18 wherein: the controller comprises at least one patch cord which is used for being connected with a patch panel in the vehicle body; the transfer line penetrates out of the motor shaft through the first access hole and the through hole.

20. The balance vehicle wheel of claim 7 wherein: the motor shaft is provided with a wire passing groove, the starting end of the wire passing groove is positioned between the fixed seat and the fixed cover and corresponds to the controller, and the terminal of the wire passing groove is flush with the tail end of the penetrating end of the motor shaft and is used for leading out a wire harness of the controller from the fixed cover.

21. The balance vehicle wheel of claim 20 wherein: and the motor shaft is also provided with an adhesive layer, and the adhesive layer covers the wire passing groove and is used for fixing the wire harness.

22. The balance vehicle wheel according to claim 3 or 7, wherein: the fixed cover is provided with a first wire passing hole for leading out a wire harness of the controller from the fixed cover.

23. The balance vehicle wheel of claim 1, wherein: the controller comprises a circuit board and an aluminum shell sealing structure, wherein the aluminum shell sealing structure covers the circuit board; and/or a plurality of exposure holes for exposing the wiring socket are arranged on the aluminum shell sealing structure.

24. A balance car, comprising a car body and characterized by further comprising the balance car wheel as claimed in any one of claims 1 to 23, wherein a motor shaft of the in-wheel motor is fixedly connected with the car body, and the controller assembly is partially arranged in the car body and is connected with the car body in a sealing way; the vehicle body is provided with a plurality of components, and the components are connected with the controller and perform signal transmission.

25. The balance vehicle of claim 24, wherein an adapter plate is provided in the vehicle body, and the controller comprises an adapter wire connected to the adapter plate through a first access hole and a through hole in the motor shaft.

26. The balance vehicle of claim 24, wherein the components include a battery assembly and a control light assembly, the battery assembly being electrically connected and in signal communication, directly or indirectly, with the controller; the control light assembly is electrically connected to and in signal communication with the controller, either directly or indirectly.

27. The balance car of claim 24, wherein a first wire passing hole is formed in the fixing cover, and is used for leading out a wire harness of the controller from the fixing cover; the side wall of the vehicle body is provided with a corresponding second wire passing hole, and the wire harness penetrates out of the first wire passing hole and then enters the vehicle body through the second wire passing hole.