阅读说明：本技术 一种油电混合摩托车的无刷电机 (A kind of brushless motor of oil electric hybrid motorcycle ) 是由 朱卫 张忠 陈万春 于 2018-05-21 设计创作，主要内容包括：本发明涉及电机技术领域,其公开了一种油电混合摩托车的无刷电机,包括用于连接摩托车前叉的支撑轴、可转动的设置在所述支撑轴上的轮圈外壳、用于驱动所述轮圈外壳转动的驱动装置,所述驱动装置包括马达组件及减速齿轮组件,所述马达组件连接减速齿轮组件,所述减速齿轮组件连接所述轮圈外壳,所述驱动装置为设置于所述轮圈外壳内部的内置型驱动装置或者为设置于所述轮圈外壳外部的外置型驱动装置,所述内置型驱动装置中的减速齿轮组件为行星减速齿轮组件,所述外置型驱动装置中的减速齿轮组件为具有锥齿轮传动的减速齿轮组件。本发明可以提高无刷电机的输出扭矩,进而提高越野用的电动摩托车或者油电混合摩托车的动力性能。(The present invention relates to technical field of motors, it discloses a kind of brushless motors of oily electric hybrid motorcycle, including the support shaft for connecting Motorcycle Front Fork, the wheel rim shell being spindle rotationally arranged in the support shaft, for driving the driving device of the wheel rim shell rotation, the driving device includes motor sub-assembly and reduction gear component, the motor sub-assembly connects reduction gear component, the reduction gear component connects the wheel rim shell, the driving device is to be set to the internally-arranged type driving device of the wheel rim interior of shell or to be set to the externally positioned type driving device of the wheel rim shell exterior, reduction gear component in the internally-arranged type driving device is planetary reduction gear component, reduction gear component in the externally positioned type driving device is the reduction gear component with Bevel Gear Transmission.The output torque of brushless motor can be improved in the present invention, and then improves the power performance of cross-country battery-operated motor cycle or oily electric hybrid motorcycle.)

1. it is a kind of oil electric hybrid motorcycle brushless motor, which is characterized in that including for connecting Motorcycle Front Fork support shaft, The wheel rim shell that is spindle rotationally arranged in the support shaft, the driving device for driving the wheel rim shell rotation, it is described Driving device includes motor sub-assembly and reduction gear component, and the motor sub-assembly connects reduction gear component, the reduction gearing Component connects the wheel rim shell, the driving device be set to the wheel rim interior of shell internally-arranged type driving device or For the externally positioned type driving device for being set to the wheel rim shell exterior, the reduction gear component in the internally-arranged type driving device is Planetary reduction gear component, the reduction gear component in the externally positioned type driving device are the reduction gearing with Bevel Gear Transmission Component.

2. a kind of brushless motor of oily electric hybrid motorcycle according to claim 1, which is characterized in that the internally-arranged type drives Device is moved as planet external-rotor-type driving device, in the planet external-rotor-type driving device, motor sub-assembly includes being fixed on Motor inner stator in the support shaft, the external-rotor motor shell for being placed coaxially on the motor inner stator periphery, it is described to subtract Fast gear assembly includes the fixation planetary gear disk being arranged in the support shaft, is arranged on the fixed planetary gear disk A number of planetary gear, housing engage the driving sun gear of connection in the support shaft and with the planetary gear, One end of the driving sun gear is fixed on one end end face of the external-rotor motor shell, the inner round wall of the wheel rim shell It is equipped with the internal gear as planetary gear circle, the internal gear is meshed with the planetary gear.

3. a kind of brushless motor of oily electric hybrid motorcycle according to claim 2, which is characterized in that the wheel rim shell Rolling bearing is connected between the support shaft.

4. a kind of brushless motor of oily electric hybrid motorcycle according to claim 2, which is characterized in that the planetary reduction gear The reduction ratio of gear assembly is 3~5.

5. a kind of brushless motor of oily electric hybrid motorcycle according to claim 1, which is characterized in that the internally-arranged type drives Device is moved as planet inner-rotor-type driving device, in the planet inner-rotor-type driving device, support shaft includes being respectively used to It is pitched with the front left in the Motorcycle Front Fork and front right pitches two fixed coaxial outside fixing axles, and described two outsides are solid Rotatable rotary shaft is coaxially connected between dead axle；The motor sub-assembly is inner rotor motor, the inner rotor motor packet The inner rotor motor shell for including internal rotor, being placed coaxially on the internal rotor periphery, the inner rotor motor shell with it is described two One of outside fixing axle in the fixing axle of outside is fixedly connected, and the internal rotor is set in the rotary shaft；It is described to subtract Fast gear assembly includes the fixation planet tooth on the outside of the another one being arranged in described two outside fixing axles in fixing axle Wheel disc, is integrally connected to the rotary shaft at a number of planetary gear being arranged on the fixed planetary gear disk Driving sun gear upper and that connection is engaged with the planetary gear, the inner round wall of the wheel rim shell, which is equipped with, is used as planet tooth The internal gear of wheel rim, the internal gear are meshed with the planetary gear.

6. a kind of brushless motor of oily electric hybrid motorcycle according to claim 5, which is characterized in that the rotary shaft connects It is connected in the end inner hole of two outside fixing axles, and in the end of the rotary shaft and described two outside fixing axles Connect between hole, between the wheel rim shell and the support shaft, between the inner rotor motor shell and the outside fixing axle It is connected to rolling bearing.

7. a kind of brushless motor of oily electric hybrid motorcycle according to claim 5, which is characterized in that the planetary reduction gear The reduction ratio of gear assembly is 8~10.

8. a kind of brushless motor of oily electric hybrid motorcycle according to claim 1, which is characterized in that the externally positioned type drives Dynamic device include by dish-type assembly shell, be connected to described dish-type assembly shell aperture one end assembly cover board constituted it is external Shell, the external shell are interior mutually same according to being successively superimposed with from the assembly cover board to the direction of the dish-type assembly shell The first needle-like plane bearing, wheel rim drive gear disk, the second needle-like plane bearing of axis are additionally provided with motor in the external shell Component installation cavity, the motor sub-assembly are set in the motor sub-assembly installation cavity, and the motor sub-assembly includes drive motor, connection The drive motor fixing seat of the drive motor is arranged in and is driven in the drive motor fixing seat and by the drive motor Main gear shaft, the bevel gear in the main gear shaft are meshed with the bevel gear in the wheel rim drive gear disk； The assembly cover board, the first needle-like plane bearing, wheel rim drive gear disk, the second needle-like plane bearing center all have For passing through the central bore of the support shaft, the inner face of the wheel rim drive gear disk is equipped with bolt hole, and the wheel Circle drive gear disk is by successively passing through the bolt hole, the central bore of the first needle-like plane bearing, the assembly lid The central bore of plate is bolted on the wheel rim shell.

9. a kind of brushless motor of oily electric hybrid motorcycle according to claim 8, which is characterized in that the wheel rim shell Rolling bearing is respectively connected between the support shaft, between the wheel rim drive gear disk and the support shaft.

10. a kind of brushless motor of oily electric hybrid motorcycle according to claim 8, which is characterized in that the reducing gear The reduction ratio of wheel assembly is 14~16.

Technical field

The present invention relates to technical field of motors, and in particular to a kind of brushless motor of oil electric hybrid motorcycle.

Background technique

The motor used on battery-operated motor cycle at present is common for two class of brush motor and brushless motor.Due to brushless motor Traditional contact commutator and brush are replaced using semiconductor switch device (such as Hall element), therefore it has reliability The advantages such as height, non-commutation spark, mechanical noise be low.

According to the difference of battery-operated motor cycle application demand, the automobile-used brushless motor of electric motorcycle according to motor assembly machinery Structure is generally divided into the deceleration type brushless motor for including The gear deceleration structure and the electric-machine directly-driven without The gear deceleration structure to divide Type brushless motor.

But the deceleration type brushless motor or electric-machine directly-driven type brushless motor used on existing battery-operated motor cycle its output turn round Square is not generally high, can be only applied to conventional battery-operated motor cycle, and power performance is poor, can not be applicable to getting over for large torque output The needs of wild battery-operated motor cycle or oily electric hybrid motorcycle.

Summary of the invention

To solve the above-mentioned problems, the present invention proposes a kind of brushless motor of oily electric hybrid motorcycle, it is intended to by a relatively large margin The output torque of brushless motor is improved, to meet the need of the large torque of cross-country battery-operated motor cycle or oily electric hybrid motorcycle It wants, and then improves the power performance of cross-country battery-operated motor cycle or oily electric hybrid motorcycle.Specific technical solution is as follows:

A kind of brushless motor of oil electric hybrid motorcycle, including the support shaft, rotatable for connecting Motorcycle Front Fork The wheel rim shell that is arranged in the support shaft, the driving device for driving the wheel rim shell rotation, the driving device Including motor sub-assembly and reduction gear component, the motor sub-assembly connects reduction gear component, the reduction gear component connection The wheel rim shell, the driving device are to be set to the internally-arranged type driving device of the wheel rim interior of shell or to be set to The externally positioned type driving device of the wheel rim shell exterior, the reduction gear component in the internally-arranged type driving device are planetary reduction gear Gear assembly, the reduction gear component in the externally positioned type driving device are the reduction gear component with Bevel Gear Transmission.

In above-mentioned technical proposal, reduction ratio can be greatly improved using planetary reduction gear component in brushless motor, and Using the reduction gear component of Bevel Gear Transmission, big bevel gear is driven by small bevel gear, can equally be obtained higher Reduction ratio, compared with the existing technology in deceleration type brushless motor use common cylinder gear reduced drive structure, reduction ratio Bigger and structure is more compact, so as to meet the cross-country battery-operated motor cycle for needing large torque to export or oil electricity mixing The needs of motorcycle.

Specifically, the internally-arranged type driving device is planet external-rotor-type driving device, and the planet external-rotor-type drives In dynamic device, motor sub-assembly includes the motor inner stator being fixed in the support shaft, is placed coaxially in the motor The external-rotor motor shell of stator peripheral, the reduction gear component include the fixation planetary gear being arranged in the support shaft Disk, a number of planetary gear being arranged on the fixed planetary gear disk, housing in the support shaft and with it is described One end of the driving sun gear of planetary gear engagement connection, the driving sun gear is fixed on the external-rotor motor shell One end end face, the inner round wall of the wheel rim shell is equipped with the internal gear as planetary gear circle, the internal gear with it is described Planetary gear is meshed.

Above-mentioned planet external-rotor-type driving device, one side have planetary reduction gear structure, on the other hand drive The rotation of sun gear is realized by the rotation of the external-rotor motor shell in motor sub-assembly.When work, external-rotor motor shell Driving sun gear rotation is driven, drives the rotation of sun gear that planetary gear is driven to rotate again, planetary gear is again with driving wheel Shell rotation is enclosed, to realize deceleration transmission, and it is bigger to slow down.

In order to improve functional reliability, rolling bearing is connected between the wheel rim shell and the support shaft.

As a kind of preferred embodiment of the planetary reduction gear component in above-mentioned planet external-rotor-type driving device, the row The reduction ratio of star reduction gear component is 3~5.

The reduction ratio of above-mentioned planetary reduction gear component (is input to turning for wheel rim shell from the rotation of driving sun gear The reduction ratio of dynamic output) it can be easy in fact and driving sun gear, planetary gear and the number of teeth of internal gear are rationally set It is existing.

As another variation design to above-mentioned internally-arranged type driving device, the internally-arranged type driving device is to turn in planet Minor driving device, in the planet inner-rotor-type driving device, support shaft includes being respectively used to and the Motorcycle Front Fork In the fixed two coaxial outside fixing axles of front left fork and front right fork, and coaxially connect between described two outside fixing axles It is connected to rotatable rotary shaft；The motor sub-assembly is inner rotor motor, and the inner rotor motor includes internal rotor, coaxially sets Set the inner rotor motor shell in the internal rotor periphery, in the inner rotor motor shell and described two outside fixing axles wherein One outside fixing axle is fixedly connected, and the internal rotor is set in the rotary shaft；The reduction gear component includes setting Fixation planetary gear disk on the outside of the another one in described two outside fixing axles in fixing axle is arranged in the fixation A number of planetary gear on planetary gear disk is integrally connected in the rotary shaft and nibbles with the planetary gear The driving sun gear of connection is closed, the inner round wall of the wheel rim shell is equipped with the internal gear as planetary gear circle, described interior Gear is meshed with the planetary gear.

Above-mentioned planet inner-rotor-type driving device, one side have planetary reduction gear structure, on the other hand drive The rotation of sun gear is realized by the rotation of the internal rotor in motor sub-assembly.When work, interior turn in inner rotor motor The dynamic driving sun gear rotation of subband, drives the rotation of sun gear that planetary gear is driven to rotate again, planetary gear drives again Wheel rim shell rotation, to realize deceleration transmission, and it is bigger to slow down.

In the present invention, the rotary shaft is connected in the end inner hole of two outside fixing axles, and the rotation Between axis and the end inner hole of described two outside fixing axles, between the wheel rim shell and the support shaft, the internal rotor Rolling bearing is respectively connected between motor shell and the outside fixing axle.

The connection structure of above-mentioned rotary shaft and outside fixing axle can make that sun gear is driven to be made smaller, to have Conducive to raising reduction ratio.

As a kind of preferred embodiment of the planetary reduction gear component in above-mentioned planet inner-rotor-type driving device, the row The reduction ratio of star reduction gear component is 8~10.

The reduction ratio of above-mentioned planetary reduction gear component (is input to turning for wheel rim shell from the rotation of driving sun gear The reduction ratio of dynamic output) it can be easy in fact and driving sun gear, planetary gear and the number of teeth of internal gear are rationally set It is existing.

As the brushless motor with externally positioned type driving device structure, the specific structure of externally positioned type driving device are as follows: institute Externally positioned type driving device is stated to include by dish-type assembly shell, be connected to the assembly cover board institute of described dish-type assembly shell aperture one end The external shell constituted, the external shell is interior successively to be folded according to from the assembly cover board to the direction of the dish-type assembly shell Closing has the first mutually coaxial needle-like plane bearing, wheel rim drive gear disk, the second needle-like plane bearing, in the external shell It is additionally provided with motor sub-assembly installation cavity, the motor sub-assembly is set in the motor sub-assembly installation cavity, and the motor sub-assembly includes driving Dynamic motor, the drive motor fixing seat of the connection drive motor, setting are in the drive motor fixing seat and by the drive The main gear shaft that motor drives is moved, the cone on bevel gear and the wheel rim drive gear disk in the main gear shaft Gear is meshed；The assembly cover board, the first needle-like plane bearing, wheel rim drive gear disk, in the second needle-like plane bearing Heart position all has the central bore for passing through the support shaft, and the inner face of the wheel rim drive gear disk is equipped with bolt Hole, and the wheel rim drive gear disk pass through successively pass through the bolt hole, the first needle-like plane bearing central bore, The central bore of the assembly cover board is bolted on the wheel rim shell.

The above-mentioned brushless motor with externally positioned type driving device structure, structure is simple, and the reduction ratio of Bevel Gear Transmission It is larger.

In order to improve functional reliability, between the wheel rim shell and the support shaft, the wheel rim drive gear disk with Rolling bearing is respectively connected between the support shaft.

As the preferred embodiment of the reduction gear component in above-mentioned externally positioned type driving device, the reduction gear component subtracts Speed ratio is 14~16.

The reduction ratio of above-mentioned reduction gear component (is input to the rotation output of wheel rim shell from the rotation of drive motor Reduction ratio) number of teeth of the bevel gear in the bevel gear that is rationally arranged in main gear shaft, wheel rim drive gear disk can be passed through And it is easy to accomplish.

In the present invention, the outer wall and the front fork of the motor sub-assembly installation cavity in the external shell lean on flushconnection.

As a preferred solution of the present invention, a pair of of phase can be set in drive motor main shaft, main gear shaft The transition gear that mutually engages further increases reduction ratio.Wherein, the drive motor is by being arranged in the drive motor master A pair of of transition gear on axis and main gear shaft drives the rotation of the main gear shaft.

The beneficial effects of the present invention are:

First, a kind of brushless motor of oily electric hybrid motorcycle of the invention can be big using planetary reduction gear component The raising reduction ratio of amplitude, and the reduction gear component of Bevel Gear Transmission is used, big bevel gear is driven by small bevel gear, Higher reduction ratio can equally be obtained, compared with the existing technology in deceleration type brushless motor use common cylinder The gear deceleration Drive mechanism, reduction ratio is bigger and structure is more compact, so as to meet need large torque to export cross-country electronic The needs of motorcycle or oily electric hybrid motorcycle.

Second, a kind of brushless motor of oily electric hybrid motorcycle of the invention is provided with planet external-rotor-type driving device, Its one side has planetary reduction gear structure, and on the other hand driving the rotation of sun gear is by outer turn in motor sub-assembly The rotation of sub- motor shell and realize.When work, external-rotor motor shell drives driving sun gear rotation, drives turning for sun gear Dynamic to drive planetary gear rotation again, planetary gear drives wheel rim shell to rotate again, to realize deceleration transmission, and reduction ratio It is larger.

A kind of third, the brushless motor of oily electric hybrid motorcycle of the invention, is provided with planet inner-rotor-type driving device, Its one side has planetary reduction gear structure, and on the other hand driving the rotation of sun gear is by turning in motor sub-assembly Son rotation and realize.When work, the internal rotor in inner rotor motor drives driving sun gear rotation, drives sun gear Rotation drives planetary gear rotation again, and planetary gear drives wheel rim shell to rotate again, to realize deceleration transmission, and slows down It is bigger.

4th, a kind of brushless motor of oily electric hybrid motorcycle of the invention is provided with externally positioned type driving device, structure Simply, and the deceleration of Bevel Gear Transmission is bigger.

Detailed description of the invention

Fig. 1 is that a kind of three-dimensional configuration schematic diagram of the brushless motor of oily electric hybrid motorcycle of the invention (has row Star external-rotor-type driving device structure)；

Fig. 2 is the overall structure diagram (section view) of the brushless motor in Fig. 1；

Fig. 3 is that the three-dimensional configuration schematic diagram of the brushless motor of second of oily electric hybrid motorcycle of the invention (has Planet inner-rotor-type driving device structure)；

Fig. 4 is the overall structure diagram (section view) of the brushless motor in Fig. 3；

Fig. 5 is that the three-dimensional configuration schematic diagram of the brushless motor of the third oily electric hybrid motorcycle of the invention (has Externally positioned type driving device structure)；

Fig. 6 is the overall structure diagram (section view) of the brushless motor in Fig. 5.

In figure: 1, support shaft, 2, wheel rim shell, 3, motor inner stator, 4, external-rotor motor shell, 5, fixed planetary gear Disk, 6, planetary gear, 7, driving sun gear, 8, internal gear, 9, rolling bearing, 10, the cover board on wheel rim shell；

In figure: 11, front fork, 12, front left fork, 13, front right fork, 14, outside fixing axle, 15, rotary shaft, 16, internal rotor horse It reaches, 17, inner rotor motor shell；

In figure: 18, dish-type assembly shell, 19, assembly cover board, 20, external shell, the 21, first needle-like plane bearing, 22, Wheel rim drive gear disk, the 23, second needle-like plane bearing, 24, motor sub-assembly installation cavity, 25, drive motor, 26, drive motor Fixing seat, 27, main gear shaft, 28, bolt hole, 29, bolt, 30, the transition gear on drive motor main shaft, 31, main drive Transition gear on movable gear shaft.

Specific embodiment

With reference to the accompanying drawings and examples, further description of the specific embodiments of the present invention.Following embodiment is only For clearly illustrating technical solution of the present invention, and not intended to limit the protection scope of the present invention.

It is as shown in Figures 1 to 6 a kind of embodiment of the brushless motor of oily electric hybrid motorcycle of the invention, including for connecting Connect the support shaft 1 of Motorcycle Front Fork 11, the wheel rim shell 2 being spindle rotationally arranged in the support shaft 1, for driving the wheel The driving device that shell 2 rotates is enclosed, the driving device includes motor sub-assembly and reduction gear component, the motor sub-assembly connection Reduction gear component, the reduction gear component connect the wheel rim shell 2, and the driving device is to be set to outside the wheel rim Internally-arranged type driving device inside shell 2 or the externally positioned type driving device to be set to outside the wheel rim shell 2, it is described built-in Reduction gear component in type driving device is planetary reduction gear component, the train of reduction gears in the externally positioned type driving device Part is the reduction gear component with Bevel Gear Transmission.

In above-mentioned technical proposal, reduction ratio can be greatly improved using planetary reduction gear component in brushless motor, and Using the reduction gear component of Bevel Gear Transmission, big bevel gear is driven by small bevel gear, can equally be obtained higher Reduction ratio, compared with the existing technology in deceleration type brushless motor use common cylinder gear reduced drive structure, reduction ratio Bigger and structure is more compact, so as to meet the cross-country battery-operated motor cycle for needing large torque to export or oil electricity mixing The needs of motorcycle.

Specifically, as shown in Figure 1, 2, the internally-arranged type driving device is planet external-rotor-type driving device, the row In star external-rotor-type driving device, motor sub-assembly includes the motor inner stator 3 being fixed in the support shaft 1, coaxially sets The external-rotor motor shell 4 in 3 periphery of motor inner stator is set, the reduction gear component includes being arranged in the support shaft 1 On fixation planetary gear disk 5, be arranged on the fixed planetary gear disk 5 a number of planetary gear 6, housing is in institute The driving sun gear 7 of connection is stated in support shaft 1 and engages with the planetary gear 6, one end of the driving sun gear 7 is solid It is scheduled on one end end face of the external-rotor motor shell 4, the inner round wall of the wheel rim shell 2 is equipped with as planetary gear circle Internal gear 8, the internal gear 8 are meshed with the planetary gear 6.

Above-mentioned planet external-rotor-type driving device, one side have planetary reduction gear structure, on the other hand drive The rotation of sun gear 7 is realized by the rotation of the external-rotor motor shell 4 in motor sub-assembly.When work, external-rotor motor Shell 4 drives driving sun gear 7 to rotate, and the rotation of driving sun gear 7 drives the rotation of planetary gear 6 again, and planetary gear 6 is again Wheel rim shell 2 is driven to rotate, to realize deceleration transmission, and it is bigger to slow down.

In order to improve functional reliability, rolling bearing 9 is connected between the wheel rim shell 2 and the support shaft 1.

As a kind of preferred embodiment of the planetary reduction gear component in above-mentioned planet external-rotor-type driving device, the row The reduction ratio of star reduction gear component is 3~5.

The reduction ratio of above-mentioned planetary reduction gear component (is input to wheel rim shell 2 from the rotation of driving sun gear 7 Rotate the reduction ratio of output) it can be held and driving sun gear 7, planetary gear 6 and the number of teeth of internal gear 8 are rationally set Easily realize.

It is furthermore preferred that the number of teeth that can choose driving sun gear 7 is 30, the number of teeth of planetary gear 6 is 45, internal tooth The number of teeth of wheel 8 is 120, then reduction ratio are as follows:

(45 ÷ 30) × (120 ÷ 45)=4

The reduction ratio of 1:4 can be thus achieved.

As shown in Figure 3,4, as another variation design to above-mentioned internally-arranged type driving device, the internally-arranged type driving dress It is set to planet inner-rotor-type driving device, in the planet inner-rotor-type driving device, support shaft 1 includes being respectively used to and institute The front left fork 12 and two fixed coaxial outside fixing axles 14 of front right fork 13 in Motorcycle Front Fork 11 are stated, and described two outer Rotatable rotary shaft 15 is coaxially connected between side fixing axle 14；The motor sub-assembly is inner rotor motor 16, described interior Rotor motor 16 includes internal rotor, the inner rotor motor shell 17 for being placed coaxially on the internal rotor periphery, the internal rotor horse It is fixedly connected up to shell 17 with one of outside fixing axle in described two outside fixing axles 14, the internal rotor is set to described Rotary shaft 15 on；The reduction gear component includes on the outside of the another one being arranged in described two outside fixing axles 14 Fixation planetary gear disk 5 in fixing axle, a number of planetary gear 6, one being arranged on the fixed planetary gear disk 5 It is connected to body in the rotary shaft 15 and engages with the planetary gear 6 the driving sun gear 7 of connection, outside the wheel rim The inner round wall of shell 2 is equipped with the internal gear 8 as planetary gear circle, and the internal gear 8 is meshed with the planetary gear 6.

Above-mentioned planet inner-rotor-type driving device, one side have planetary reduction gear structure, on the other hand drive The rotation of sun gear is realized by the rotation of the internal rotor in motor sub-assembly.It is interior in inner rotor motor 16 when work Rotor drives driving sun gear 7 to rotate, and the rotation of driving sun gear 7 drives the rotation of planetary gear 6, planetary gear 6 again Wheel rim shell 2 is driven to rotate again, to realize deceleration transmission, and it is bigger to slow down.

In the present embodiment, the rotary shaft 15 is connected in the end inner hole of two outside fixing axles 14, and institute State between rotary shaft 15 and the end inner hole of described two outside fixing axles 14, the wheel rim shell 2 and the support shaft 1 it Between, between the inner rotor motor shell 17 and the outside fixing axle 14 be respectively connected with rolling bearing.

The above-mentioned connection structure using rotary shaft 15 and outside fixing axle 14, can make drive sun gear 7 be made compared with It is small, to be conducive to improve reduction ratio.

As a kind of preferred embodiment of the planetary reduction gear component in above-mentioned planet inner-rotor-type driving device, the row The reduction ratio of star reduction gear component is 8~10.

The reduction ratio of above-mentioned planetary reduction gear component (is input to wheel rim shell 2 from the rotation of driving sun gear 7 Rotate the reduction ratio of output) it can be held and driving sun gear 7, planetary gear 6 and the number of teeth of internal gear 8 are rationally set Easily realize.

It is furthermore preferred that the number of teeth that can choose driving sun gear 7 is 12, the number of teeth of planetary gear 6 is 48, internal tooth The number of teeth of wheel 8 is 108, then reduction ratio are as follows:

(48 ÷ 12) × (108 ÷ 48)=9

The reduction ratio of 1:9 can be thus achieved.

As shown in Figure 5,6, as the brushless motor with externally positioned type driving device structure, the tool of externally positioned type driving device Body structure are as follows: the externally positioned type driving device includes by dish-type assembly shell 18, is connected to the dish-type assembly shell 18 and is open The external shell 20 that the assembly cover board 19 of one end is constituted, according to from the assembly cover board 19 to described in the external shell 20 The direction of dish-type assembly shell 18 be successively superimposed with mutually coaxial the first needle-like plane bearing 21, wheel rim drive gear disk 22, Second needle-like plane bearing 23, motor sub-assembly installation cavity 24 is additionally provided in the external shell 20, and the motor sub-assembly is set to institute It states in motor sub-assembly installation cavity 24, the motor sub-assembly includes the drive motor of drive motor 25, the connection drive motor 25 Fixing seat 26, the main gear shaft 27 for being arranged in the drive motor fixing seat 26 and being driven by the drive motor 25, Bevel gear in the main gear shaft 27 is meshed with the bevel gear in the wheel rim drive gear disk 22；The assembly lid Plate 19, the first needle-like plane bearing 21, wheel rim drive gear disk 22, the second needle-like plane bearing 23 center all have use It is equipped with bolt hole 28 in the inner face of the central bore for passing through the support shaft 1, the wheel rim drive gear disk 22, and described Wheel rim drive gear disk 22 is by successively passing through the bolt hole 28, the central bore of the first needle-like plane bearing 21, institute The bolt 29 for stating the central bore of assembly cover board 19 is connected on the wheel rim shell 2.

The above-mentioned brushless motor with externally positioned type driving device structure, structure is simple, and the reduction ratio of Bevel Gear Transmission It is larger.

In order to improve functional reliability, between the wheel rim shell 2 and the support shaft 1, the wheel rim drive gear disk Rolling bearing is respectively connected between 22 and the support shaft 1.

As the preferred embodiment of the reduction gear component in above-mentioned externally positioned type driving device, the reduction gear component subtracts Speed ratio is 14~16.

(rotation for being input to wheel rim shell 2 from the rotation of drive motor 25 is defeated for the reduction ratio of above-mentioned reduction gear component Reduction ratio out) the cone tooth in the bevel gear that is rationally arranged in main gear shaft 27, wheel rim drive gear disk 22 can be passed through The number of teeth of wheel and it is easy to accomplish.

In the present embodiment, the outer wall and the front fork 11 of the motor sub-assembly installation cavity 24 in the external shell 20 connect by flat It connects.

As a kind of preferred embodiment of the present embodiment, can be arranged in 25 main shaft of drive motor, main gear shaft 27 A pair of intermeshing transition gear further increases reduction ratio.Wherein, the drive motor 25 is by being arranged in the drive A pair of of transition gear on dynamic 25 main shaft of motor and main gear shaft 27 drives the rotation of the main gear shaft 27.

As a kind of more preferable scheme of the reduction gear component in above-mentioned externally positioned type driving device, driving horse can choose The number of teeth up to the transition gear 30 on 25 main shafts is 24, and the number of teeth of the transition gear 31 in main gear shaft 27 is 36, The number of teeth of bevel gear in main gear shaft 27 is 12, and the number of teeth of the bevel gear in wheel rim drive gear disk 22 is 120 It is a, then reduction ratio are as follows:

(36 ÷ 24) × (120 ÷ 12)=15

The reduction ratio of 1:15 can be thus achieved.

The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications Also it should be regarded as protection scope of the present invention.