CN111327155A - Split shaft type hub motor - Google Patents
Split shaft type hub motor Download PDFInfo
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- CN111327155A CN111327155A CN201811545096.4A CN201811545096A CN111327155A CN 111327155 A CN111327155 A CN 111327155A CN 201811545096 A CN201811545096 A CN 201811545096A CN 111327155 A CN111327155 A CN 111327155A
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- wheel
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- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 230000009467 reduction Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000017525 heat dissipation Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Retarders (AREA)
Abstract
The invention discloses a split shaft type hub motor, which comprises a first half shaft, a motor, a central shaft, a second half shaft, a planetary gear speed reducing mechanism and an external shell, wherein the external shell is sleeved outside the motor; one end of the first half shaft is provided with threads, and the other end of the first half shaft is provided with a first boss; the central shaft is divided into a first shaft section and a second shaft section, the diameter of the second shaft section is larger than that of the first shaft section, and one end of the central shaft, which is close to the second shaft section, is provided with a sun gear integrally formed with the central shaft; and one end of the second half shaft is provided with a thread, and the other end of the second half shaft is provided with a second boss. The invention adopts split shaft type design, and can ensure the strength of the shaft core while reducing the size of the sun wheel, thereby reducing the volume and the weight of the whole machine.
Description
Technical Field
The invention relates to the technical field of electric vehicle motors, in particular to a split shaft type hub motor.
Background
Automobiles, motorcycles, and fuel-type power-assisted vehicles are one of the main sources of urban air pollution and noise pollution, and the energy sources thereof are mainly limited to petroleum. In contrast, electric vehicles do not have these disadvantages and thus will certainly find wider and wider application. China is a bicycle great country, and with the improvement of the living standard of people and the limitation of the purchasing ability of residents, urban road facilities and other factors, the electric bicycle is a green transportation tool which is more competitive and popular than electric automobiles.
One of the key technologies of the electric bicycle is a motor, and the quality of the performance of the motor directly affects the quality of the whole bicycle, so the motor for the electric bicycle has the characteristics of small volume, light weight, low rotating speed, large torque, high efficiency, low cost and the like. The method which is generally adopted for realizing the miniaturization of the motor is to adopt a duplex planetary gear speed reducing structure. Namely, the sun gear is meshed with a big gear of the duplex planetary gear, and a small gear of the duplex planetary gear is meshed with the inner gear ring. The motor size is again little, needs further to increase the reduction ratio, needs to reduce the sun gear number of teeth promptly, but the sun gear receives the influence of through-shaft design, and the size can't be done for a short time, leads to the motor size great, weight is heavier.
Disclosure of Invention
In order to solve the technical problems, the invention adopts a split shaft type design to integrally form the central shaft and the sun wheel aiming at the defects and defects of the prior art, and the diameter of a section of the central shaft close to the sun wheel is increased, so that the size of the sun wheel is reduced and the strength of the shaft core is ensured, thereby reducing the volume and the weight of the whole machine.
The embodiment of the invention provides a split shaft type hub motor which comprises a first half shaft, a motor, a central shaft, a second half shaft, a planetary gear speed reducing mechanism and an external shell, wherein the external shell is sleeved outside the motor, one end of the central shaft is coaxially provided with the first half shaft, the other end of the central shaft is coaxially provided with the second half shaft, the first half shaft is in interference fit with a stator seat, the motor is sleeved on the central shaft, one end of the central shaft is connected with the planetary gear speed reducing mechanism, the planetary gear speed reducing mechanism is connected with a planetary gear support frame through a pin shaft, and the planetary gear support frame is in interference fit with the second half shaft;
one end of the first half shaft is provided with threads, and the other end of the first half shaft is provided with a first boss; a first bearing is arranged on a first shaft section of the central shaft, a second bearing is arranged on a second shaft section of the central shaft, the diameter of the second shaft section is larger than that of the first shaft section, a sun gear is arranged at one end, close to the second shaft section, of the central shaft, and the sun gear and the central shaft are integrally formed; and one end of the second half shaft is provided with a thread, and the other end of the second half shaft is provided with a second boss.
Further, the motor comprises a motor rotor and a motor stator, the motor rotor and the motor stator are sequentially sleeved on the central shaft, and the motor rotor is in interference connection or key connection with the central shaft.
Further, the motor also comprises magnetic steel, and the magnetic steel is uniformly arranged in the motor rotor.
Furthermore, the planetary gear speed reducing mechanism comprises a sun gear, an inner gear ring and at least three groups of duplex planetary gears supported on the planet carrier, the duplex planetary gears are respectively meshed with the sun gear and the inner gear ring, and the inner gear ring is connected with the second end cover through a one-way bearing.
Specifically, the duplex planetary gear comprises a large planetary gear and a small planetary gear, and the large planetary gear and the small planetary gear are in interference fit or are integrally formed.
Specifically, the duplex planetary gear is made of plastic, and is used for reducing transmission noise. The plastic gear can reduce the whole weight of the motor and has better compatibility, durability and wear resistance.
Furthermore, the external shell comprises a hub shell sleeved outside the motor, one end of the hub shell is provided with a first end cover, and the other end of the hub shell is provided with a second end cover; the first end cover is sleeved on the first half shaft, the second end cover is sleeved on the second half shaft, and fastening nuts are arranged on the outer sides of the first end cover and the second end cover, which are respectively matched with the first half shaft and the second half shaft, so that the outer shell forms a closed space structure, and the motor and the planetary gear reduction mechanism are positioned in the space structure;
and the first end cover is provided with a wire outlet hole, and the wire outlet hole is used for leading out a power supply cable and a motor signal cable of the motor stator winding.
Furthermore, a circular groove is further formed in the second half shaft and used for installing an O-shaped sealing ring, and the O-shaped sealing ring is arranged between the shaft end bearing and the second half shaft.
Furthermore, the outer sides of the stator seat and the planet carrier are uniformly provided with a plurality of groups of radiating grooves, and one surface of the hub shell, which is close to the stator seat, is uniformly provided with a plurality of radiating ribs.
Furthermore, a one-way bearing is further arranged in the hub motor and is arranged between the inner gear ring and the second end cover.
According to the split-shaft hub motor provided by the invention, after the hub motor is electrified, the central shaft can rotate, the sun gear integrally formed with the central shaft simultaneously rotates to drive the multiple groups of duplex planetary gears meshed with the sun gear to rotate, the duplex planetary gears are meshed with the inner gear ring and are decelerated through the duplex planetary gears and the inner gear ring; the outer ring of the one-way bearing is connected with the inner gear ring, the inner ring of the one-way bearing is connected with the second end cover, the outer side of the inner gear ring is fixedly connected with the second end cover, the second end cover is fixedly connected with the hub shell, the duplex planetary gear drives the inner gear ring to rotate, the inner gear ring drives the second end cover and the hub shell to rotate through the one-way bearing, and the hub shell is connected with the wheel through spokes to finally drive the wheel to move forward.
When the power supply of the motor is turned off and the vehicle slides, the vehicle drives the hub shell to rotate due to the one-way function of the one-way bearing and the inertia of the vehicle, the hub shell drives the second end cover, and the second end cover drives the one-way bearing to slide; the internal gear piece of wheel hub motor and motor stator, rotor do not all rotate, so wheel hub motor resistance is less, and the bicycle can carry out the gliding of longer distance, and the sense of riding is good.
The embodiment of the invention has the following beneficial effects:
(1) the split-shaft type planetary gear speed reducing system adopts a split-shaft type design, the through shaft of the motor is divided into a first half shaft, a central shaft and a second half shaft, the central shaft and the sun gear are designed into an integrated structure, and the size of the sun gear is reduced, so that the structure of the planetary gear speed reducing system is more compact and the size of the planetary gear speed reducing system is reduced.
(2) According to the invention, the first half shaft is in interference connection with the stator seat and is positioned at the flat position, the second half shaft is in interference connection with the planet wheel support frame and is positioned at the flat position, and the axial size of the motor is effectively reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a split-shaft hub motor according to the present invention;
FIG. 2 is a schematic view of the construction of the first axle shaft of the present invention;
FIG. 3 is a schematic view of the construction of the mandrel of the present invention;
FIG. 4 is a schematic view of the construction of the second axle shaft of the present invention.
Wherein the reference numerals are: 1-a first half shaft, 2-a central shaft, 3-an electric motor, 4-a second half shaft, 5-a planetary gear reduction mechanism, 6-an outer shell, 7-a stator seat, 8-a planet carrier, 9-a planet wheel support frame, 10-a one-way bearing, 11-a first boss, 21-a first shaft section, 22-a first bearing, 23-a second shaft section, 24-a second bearing, 31-an electric machine stator, 32-an electric machine rotor, 33-magnetic steel, 41-a second boss, 42-a circular groove, 43-a shaft end bearing, 51-a sun wheel, 52-a duplex planetary gear, 53-an inner gear ring, 61-a wheel hub shell, 62-a first end cover and 63-a second end cover.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the invention. In the description of the present invention, it is to be understood that the terms "upper", "top", "bottom", and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, which is for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be taken as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.
Example 1:
as shown in fig. 1-4, the present invention provides a split shaft type in-wheel motor, which comprises a first half shaft 1, an electric motor 3, a central shaft 2, a second half shaft 4, a planetary gear reduction mechanism 5 and an outer shell 6, wherein the outer shell 6 is sleeved outside the electric motor 3, the electric motor 3 is arranged between a stator seat 7 and a planet carrier 8, one end of the central shaft 2 is coaxially provided with the first half shaft 1, and the other end is coaxially provided with the second half shaft 4.
Specifically, first semi-axis 1 and stator seat 7 interference fit, stator seat 7 passes through the bearing and is connected with wheel hub shell 61, be provided with waterproof sealing washer between stator seat 7 and the bearing, the outside of stator seat 7 is provided with first end cover 62 and fastening nut, first semi-axis 1 and stator seat 7 complex one end are provided with first boss 11, first boss 11 is used for the installation location of first semi-axis 1 and stator seat 7, the other end of first semi-axis is provided with the screw thread.
Specifically, the wheel hub motor adopts the structural design of the outer stator of inner rotor, motor 3 includes electric motor rotor 32 and electric motor stator 31, be provided with magnet steel 33 in the electric motor rotor 32 uniformly, electric motor rotor 32 and electric motor stator 31 overlap in proper order and establish on center pin 2, electric motor rotor 32 with center pin 2 can be interference fit connection, key-type connection or the punching muscle is connected.
Specifically, a first shaft section 21 of the central shaft 2 is provided with a first bearing 22, a second shaft section 23 of the central shaft 2 is provided with a second bearing 24, the diameter of the second shaft section 23 is larger than that of the first shaft section 21, a sun gear 51 is arranged at one end, close to the second shaft section 23, of the central shaft 2, the sun gear 51 is integrally formed with the central shaft 2, and shaft sections with different diameters are designed to ensure the strength of a shaft core while the size of the sun gear is reduced.
Specifically, the central shaft 2 is connected with the planetary gear reduction mechanism 5 through a sun gear 51, the planetary gear reduction mechanism 5 includes the sun gear 51, an inner gear ring 53 and at least three sets of duplex planetary gears 52 supported on the planet carrier 8 through pins, the duplex planetary gears 52 are engaged with the sun gear 51 and the inner gear ring 53 respectively, and the inner gear ring 53 is connected with the second end cover 63 through a one-way bearing.
Specifically, the planet carrier 8 is provided with a boss matched with a plurality of pin shafts, the pin shafts are in interference fit with the corresponding bosses, the pin shafts are provided with a plurality of annular grooves, wherein the two annular grooves at the upper end and the lower end are provided with O-shaped rings, and the annular groove at the middle section is used for containing lubricating grease; when the duplex planetary gear 52 rotates around the pin shaft, the O-shaped ring has a buffering effect, can effectively absorb the meshing impact caused by manufacturing or assembling errors, and reduces vibration and noise. Meanwhile, the assembly of the O-shaped rings at the upper end and the lower end can effectively prevent the lubricating grease in the inner hole of the duplex planetary gear 52 from being exposed, thereby being beneficial to reducing the friction between the inner hole of the duplex planetary gear 52 and the pin shaft in the operation process and improving the efficiency of the whole machine; the middle section ring groove can contain lubricating grease, reduces the friction surface between the inner hole of the duplex planetary gear 52 and the pin shaft, is beneficial to reducing the friction between the inner hole of the duplex planetary gear 52 and the pin shaft in the operation process, and improves the efficiency of the whole machine.
Specifically, the double planetary gear 52 includes a large planetary gear and a small planetary gear, which are interference-fitted or integrally formed. The duplex planetary gear 52 is made of plastic, so as to reduce transmission noise. The plastic gear can reduce the whole weight of the motor and has better compatibility, durability and wear resistance.
Specifically, planetary gear reduction 5 is connected with planet wheel support frame 9 through the round pin axle, planet wheel support frame 9 and second semi-axis 4 interference fit, second semi-axis 4 one end is provided with the screw thread, and the other end is provided with second boss 41, second boss 41 is used for the installation location of second semi-axis 4 and planet wheel support frame 9. A circular groove 42 is also arranged on the second half shaft, the circular groove 42 is used for installing an O-shaped sealing ring, and the O-shaped sealing ring is arranged between the shaft end bearing 43 and the second half shaft 4.
Specifically, the external housing 6 includes a hub housing 61 sleeved outside the motor 3, one end of the hub housing 61 is provided with a first end cap 62, and the other end is provided with a second end cap 63; the first end cover 62 is sleeved on the first half shaft 1, the first end cover 62 is in bolted connection with the stator seat, the second end cover 63 is sleeved on the second half shaft 4, and fastening nuts are arranged on the outer sides of the first end cover and the second end cover, which are respectively matched with the first half shaft and the second half shaft, so that the outer shell 6 forms a closed space structure, and the motor 2 and the planetary gear reduction mechanism 5 are both positioned in the space structure; and the first end cover 62 is provided with a wire outlet hole, and the wire outlet hole is used for leading out a power cable and a motor signal cable of the motor stator winding.
Specifically, stator seat 7 and planet carrier 8's the outside evenly is provided with the multiunit radiating groove, wheel hub casing 61 is close to stator seat 7's one side evenly is provided with many heat dissipation muscle for increase heat radiating area drives the casing rotation at the motor during operation, can drive the inside air flow of motor and accelerate the heat dissipation, has improved the radiating effect, reduces the heat and gives the damage that the inside part of wheel hub motor brought, increases wheel hub motor's life.
Specifically, a one-way bearing 10 is further provided in the hub motor, and the one-way bearing is disposed between the ring gear 53 and the second end cap 63.
It should be noted that, in practical applications, products designed by using the hub motor driving device of the present invention are not only used for electric vehicles, but also electric power assisted bicycles, self-balancing vehicles, and the like, and all belong to the protection scope of the present invention.
The working principle of the hub motor is as follows: when the hub motor is powered on, the central shaft 2 rotates, the sun gear 51 integrally formed with the central shaft 2 rotates simultaneously to drive the multiple sets of duplex planetary gears 52 meshed with the sun gear 51 to rotate, the duplex planetary gears 52 are meshed with the inner gear ring 53, and the speed is reduced through the duplex planetary gears 52 and the inner gear ring 53; the outer ring of the one-way bearing 10 is connected with the inner ring 53, the inner ring of the one-way bearing 10 is connected with the second end cover 63, the outer side of the inner ring 53 is fixedly connected with the second end cover 63, the second end cover 63 is fixedly connected with the hub shell 61, the duplex planetary gear 52 drives the inner ring 53 to rotate, the inner ring 53 drives the second end cover 63 and the hub shell 61 to rotate through the one-way bearing 10, and the hub shell 61 is connected with the wheel through spokes to finally drive the wheel to move forward.
When the power supply of the motor is turned off and the vehicle slides, the vehicle drives the hub shell 61 to rotate at the moment due to the one-way function of the one-way bearing and the inertia of the vehicle, the hub shell 61 drives the second end cover 63, and the second end cover 63 drives the one-way bearing 10 to slide; the internal gear piece of wheel hub motor and motor stator, rotor do not all rotate, so wheel hub motor resistance is less, and the bicycle can carry out the gliding of longer distance, and the sense of riding is good.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A split shaft type in-wheel motor is characterized by comprising a first half shaft (1), an electric motor (3), a central shaft (2), a second half shaft (4), a planetary gear reduction mechanism (5) and an outer shell (6), the outer shell (6) is sleeved outside the motor (3), one end of the central shaft (2) is coaxially provided with a first half shaft (1), the other end is coaxially provided with a second half shaft (4), the first half shaft (1) is in interference fit with the stator seat (7), the motor (3) is sleeved on the central shaft (2), one end of the central shaft (2) is connected with the planetary gear speed reducing mechanism (5), the planetary gear speed reducing mechanism (5) is connected with a planetary gear supporting frame (9) through a pin shaft, the planet wheel support frame (9) is in interference fit with the second half shaft (4);
one end of the first half shaft (1) is provided with threads, and the other end of the first half shaft is provided with a first boss (11); a first bearing (22) is arranged on a first shaft section (21) of the central shaft (2), a second bearing (24) is arranged on a second shaft section (23) of the central shaft (2), the diameter of the second shaft section (23) is larger than that of the first shaft section (21), a sun wheel (51) is arranged at one end, close to the second shaft section (23), of the central shaft (2), and the sun wheel (51) and the central shaft (2) are integrally formed; and one end of the second half shaft (4) is provided with threads, and the other end of the second half shaft is provided with a second boss (41).
2. The split shaft type hub motor according to claim 1, wherein the motor (3) comprises a motor rotor (32) and a motor stator (31), the motor rotor (32) and the motor stator (31) are sequentially sleeved on the central shaft (2), and the motor rotor (32) is in interference connection or key connection with the central shaft (2).
3. The split-shaft hub motor according to claim 2, wherein the motor further comprises magnetic steel (33), and the magnetic steel (33) is uniformly arranged in the motor rotor (32).
4. The split-shaft type in-wheel motor according to claim 1, wherein the planetary gear speed reducing mechanism (5) comprises a sun gear (51), an inner gear ring (53) and at least three sets of duplex planetary gears (52) supported on the planet carrier (8), the duplex planetary gears (52) are respectively meshed with the sun gear (51) and the inner gear ring (53), and the inner gear ring (53) is connected with the second end cover (63) through a one-way bearing.
5. The split shaft in-wheel motor according to claim 4, wherein the double planetary gear (52) comprises a large planetary wheel and a small planetary wheel which are in interference fit or are integrally formed.
6. The split-shaft in-wheel motor according to claim 4, wherein the material of the double planetary gear (52) is plastic for reducing transmission noise.
7. The split shaft type hub motor according to claim 1, wherein the outer shell (6) comprises a hub shell (61) sleeved outside the motor (3), one end of the hub shell (61) is provided with a first end cover (62), and the other end is provided with a second end cover (63); the first end cover (62) is sleeved on the first half shaft (1), the second end cover (63) is sleeved on the second half shaft (4), fastening nuts are arranged on the outer sides of the first end cover and the second end cover which are respectively matched with the first half shaft and the second half shaft, so that the outer shell (6) forms a closed space structure, and the motor (2) and the planetary gear speed reducing mechanism (5) are both positioned in the space structure;
and the first end cover (62) is provided with wire outlet holes, and the wire outlet holes are used for leading out a power supply cable and a motor signal cable of the motor stator winding.
8. The split-shaft in-wheel motor according to claim 1, wherein the second half shaft is further provided with a circular groove (42), the circular groove (42) is used for installing an O-shaped sealing ring, and the O-shaped sealing ring is arranged between the shaft end bearing (43) and the second half shaft (4).
9. The split shaft type in-wheel motor according to claim 1, wherein a plurality of groups of heat dissipation grooves are uniformly formed on the outer sides of the stator seat (7) and the planet carrier (8), and a plurality of heat dissipation ribs are uniformly formed on one surface, close to the stator seat (7), of the hub shell (61).
10. The split shaft type in-wheel motor according to claim 1, wherein a one-way bearing (10) is further arranged in the in-wheel motor and is arranged between the inner gear ring (53) and the second end cover (63).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811545096.4A CN111327155A (en) | 2018-12-17 | 2018-12-17 | Split shaft type hub motor |
| PCT/CN2019/125702 WO2020125587A1 (en) | 2018-12-17 | 2019-12-16 | Hub motor assembly and electric bicycle comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811545096.4A CN111327155A (en) | 2018-12-17 | 2018-12-17 | Split shaft type hub motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111327155A true CN111327155A (en) | 2020-06-23 |
Family
ID=71172448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811545096.4A Pending CN111327155A (en) | 2018-12-17 | 2018-12-17 | Split shaft type hub motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111327155A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022016814A1 (en) * | 2020-07-22 | 2022-01-27 | 西南大学 | Dual-support electric drive wheel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202817991U (en) * | 2012-09-25 | 2013-03-20 | 苏州盛亿电机有限公司 | Card-type flywheel hub motor |
| WO2015154400A1 (en) * | 2014-04-11 | 2015-10-15 | 苏州八方电机科技有限公司 | Electric bicycle wheel hub motor device |
| CN209283019U (en) * | 2018-12-17 | 2019-08-20 | 宁波麦思动力系统有限公司 | A kind of split shaft hub motor |
-
2018
- 2018-12-17 CN CN201811545096.4A patent/CN111327155A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202817991U (en) * | 2012-09-25 | 2013-03-20 | 苏州盛亿电机有限公司 | Card-type flywheel hub motor |
| WO2015154400A1 (en) * | 2014-04-11 | 2015-10-15 | 苏州八方电机科技有限公司 | Electric bicycle wheel hub motor device |
| CN209283019U (en) * | 2018-12-17 | 2019-08-20 | 宁波麦思动力系统有限公司 | A kind of split shaft hub motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022016814A1 (en) * | 2020-07-22 | 2022-01-27 | 西南大学 | Dual-support electric drive wheel |
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