CN110949119B - Central driving type electric driving system assembly - Google Patents
Central driving type electric driving system assembly Download PDFInfo
- Publication number
- CN110949119B CN110949119B CN201911413371.1A CN201911413371A CN110949119B CN 110949119 B CN110949119 B CN 110949119B CN 201911413371 A CN201911413371 A CN 201911413371A CN 110949119 B CN110949119 B CN 110949119B
- Authority
- CN
- China
- Prior art keywords
- hub
- transmission shaft
- power
- speed change
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 100
- 241001272720 Medialuna californiensis Species 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
-
- 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
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
-
- 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
- B60K2007/0038—Disposition of motor in, or adjacent to, traction wheel the motor moving together with the wheel axle
-
- 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
- B60K2007/0092—Disposition of motor in, or adjacent to, traction wheel the motor axle being coaxial to the wheel axle
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Motor Power Transmission Devices (AREA)
Abstract
The invention discloses a central driving type electric driving system assembly which comprises a rotary output part and a transmission shaft penetrating through the rotary output part, wherein a power system and a speed changing system are arranged on the transmission shaft, the power system and the speed changing system are respectively positioned on two sides of the rotary output part, the power system transmits power to the speed changing system through the transmission shaft, and the speed changing system drives the rotary output part to rotate to output power. By adopting the technical scheme, the novel central driving type structure has the advantages of the hub motor and the side hanging type structure, overcomes the defects of the hub motor and the side hanging type structure, is particularly suitable for a two-wheel vehicle, can well ensure the balance of the rotating output part, and has extremely high mechanical efficiency, small heating value, better heat dissipation capacity and lighter weight.
Description
Technical Field
The invention relates to the technical field of electric drive systems, in particular to a central drive type electric drive system assembly.
Background
With the increasing severity of environmental regulations, new energy vehicles represented by pure electric vehicles, two-wheelers and tricycles have been a trend to replace traditional fuel vehicles. The existing two-wheeled electric vehicle generally adopts a hub motor and a motor side hanging structure.
The hub motor is directly driven by a low-speed direct current motor, so that the efficiency is relatively low, the heat productivity is large, and the original balance of the wheel structure is broken due to the large size and heavy weight of the motor, so that the control performance and the safety are affected to a certain extent.
The side-hung structure places the motor and the speed change system (gearbox or speed reducer) on the same side of the driving wheel, and although a high-speed motor can be adopted to improve mechanical efficiency, the weight of the speed change mechanism and the motor is heavy, so that the balance of the wheel is poor, and the influence on the two-wheel vehicle is more obvious.
Therefore, it is urgently needed to design a new electric drive system, which can have the advantages of both the hub motor and the motor side-hanging structure, and make up for the defects of the hub motor and the motor side-hanging structure.
Disclosure of Invention
In order to solve the technical problems, the invention provides a central driving type electric driving system assembly.
The technical scheme is as follows:
the utility model provides a central driving formula electric drive system assembly, includes rotation output part and wears to establish the transmission shaft on rotation output part, its main points lie in: the transmission shaft is provided with a power system and a speed changing system, the power system and the speed changing system are respectively positioned at two sides of the rotary output part, the power system transmits power to the speed changing system through the transmission shaft, and the speed changing system drives the rotary output part to rotate to output power.
The central driving type structure with the novel design is adopted, the power system and the speed change system are symmetrically arranged on two sides of the rotary output part, so that balance of the rotary output part can be well guaranteed, the problem that the balance is poor due to the traditional side-hung type structure is solved, the novel wheel hub motor is particularly suitable for a two-wheel vehicle, and the novel wheel hub motor can adopt a high-speed motor, has higher mechanical efficiency, smaller heating value, better heat dissipation capacity and lighter weight compared with the traditional wheel hub motor.
As preferable: the power system comprises a motor sleeved on the transmission shaft and used for driving the transmission shaft to rotate and a power system box body wrapped outside the motor, and the motor and the power system box body are fixed on the transmission shaft through a power system locking component;
the speed change system comprises a speed change mechanism for speed change transmission between a transmission shaft and a rotary output part and a speed change system box body which is covered outside the speed change mechanism, wherein the speed change mechanism and the speed change system box body are fixed on the transmission shaft through a speed change system locking part.
By adopting the structure, the power system and the speed change system are respectively independent structures, so that the modularized design can be respectively carried out, the installation and the maintenance are easy to be respectively carried out, and the disassembly and the installation of the rotary output component are convenient.
As preferable: the power system box body comprises a power box base for accommodating the motor and a power box cover capable of being covered on the power box base, and comprises a speed box base for accommodating a speed change mechanism and a speed box cover covered on the speed box base;
after the power box base and the motor are sequentially arranged on the transmission shaft, the power box base and the motor are locked through a power system locking part, then the power box cover is covered on the power box base, and then the first end cover of the transmission shaft is covered on the power box cover;
after the transmission base, the speed change mechanism and the transmission case cover are sequentially arranged on the transmission shaft, the transmission base, the speed change mechanism and the transmission case cover are locked through a speed change system locking part, and then the transmission shaft second end cover is covered on the transmission case cover.
By adopting the structure, the device is simple and reliable and is easy to assemble and disassemble.
As preferable: the power system locking component and the speed change system locking component are both half-moon keys, and the transmission shaft is provided with half-moon key mounting grooves which are matched with the corresponding half-moon keys. The structure is simple and reliable, and the cost is low.
As preferable: the automatic transmission further comprises a bottom fork, and two main pipes of the bottom fork are fixedly connected with the power box base and the gearbox base respectively. By adopting the structure, the whole structure is stable and reliable, and the influence on the motor and the speed change mechanism is avoided as much as possible.
As preferable: the speed change mechanism comprises a primary driving gear fixedly sleeved on a transmission shaft, a speed reduction intermediate shaft parallel to the transmission shaft, a primary driven gear fixedly sleeved on the speed reduction intermediate shaft, a hub driving sleeve movably sleeved on the transmission shaft and a secondary driven gear fixedly sleeved on the hub driving sleeve, the primary driving gear is meshed with the primary driven gear, the speed reduction intermediate shaft is provided with a secondary driving tooth meshed with the secondary driven gear, and the hub driving sleeve can drive the rotation output part to synchronously rotate. With the above structure, the reduction transmission can be stably and reliably performed.
As preferable: a thrust ball bearing is arranged between the hub driving sleeve and the primary driving gear. By adopting the structure, the reliability of the installation of the hub driving sleeve and the primary driving gear is ensured.
As preferable: the hub driving sleeve is provided with a primary step surface and a secondary step surface, the protruding height of the primary step surface is higher than that of the secondary step surface, the rotary output part is sleeved on the primary step surface and is in spline fit with the primary step surface, and the secondary driven gear is sleeved on the secondary step surface and is in spline fit with the secondary step surface. By adopting the structure, the assembly is easy, and the reliability is high.
As preferable: the motor shaft of the motor is of a hollow shaft sleeve structure, and the motor is sleeved on the transmission shaft in a shaft spline fit manner. By adopting the structure, the coaxiality of the motor shaft and the transmission shaft is ensured, larger torque can be born, and the structure is stable and reliable.
As preferable: and an encoder is arranged on the transmission shaft and is positioned between the first end cover of the transmission shaft and the power box cover. By adopting the structure, the rotating speeds of the motor and the transmission shaft can be converted into signal forms for feedback.
Compared with the prior art, the invention has the beneficial effects that:
the central driving type electric driving system assembly adopting the technical scheme is novel in structure, ingenious in design and easy to realize, has the advantages of the hub motor and the side-hanging type structure through the central driving type structure with brand-new design, makes up the defects of the hub motor and the side-hanging type structure, is particularly suitable for a two-wheel vehicle, not only can well ensure the balance of the rotating output part, but also has extremely high mechanical efficiency, smaller heating value, better heat dissipation capacity and lighter weight.
Drawings
FIG. 1 is a cross-sectional view of a center drive electric drive system assembly;
FIG. 2 is a schematic diagram of the relationship between the motor, drive shaft and transmission mechanism;
FIG. 3 is a schematic structural view of a center drive electric drive system assembly;
FIG. 4 is a schematic view of a modular wheel;
FIG. 5 is a cross-sectional view of a combination wheel;
FIG. 6 is a schematic view of one of the hub brackets from one view;
FIG. 7 is a schematic view of another view of the hub bracket;
FIG. 8 is a schematic view of one of the hub views;
fig. 9 is a schematic view of another view of the hub.
Detailed Description
The invention is further described below with reference to examples and figures.
As shown in fig. 1 and 3, a central driving type electric driving system assembly mainly comprises a rotary output part 1 and a transmission shaft 2 penetrating through the rotary output part 1, wherein a power system and a speed changing system are installed on the transmission shaft 2, the power system and the speed changing system are respectively positioned on two sides of the rotary output part 1, and the power system transmits power to the speed changing system through the transmission shaft 2, and then the speed changing system drives the rotary output part 1 to output power.
Through the central driving type structure of brand-new design, have the advantage of in-wheel motor and side-hung type structure concurrently, made up the not enough of in-wheel motor and side-hung type structure, be particularly useful for the two wheeler, not only can guarantee the equilibrium of rotating output part well, have high mechanical efficiency moreover, less calorific capacity, better heat dispersion and lighter weight.
In this embodiment, the rotary output member 1 is a combination wheel. Referring to fig. 4 and 5, the combined wheel includes a hub bracket 1a, a hub 1b and a tire 1c coaxially and sequentially disposed from inside to outside. The transmission system drives the hub carrier 1a to drive the unitized wheel. The hub 1b is of a hollow structure, and the hub 1b is detachably mounted on the hub bracket 1 a. The tire 1c is sleeved on the hub 1 b.
Referring to fig. 4 to 9, the outer ring of the hub bracket 1a has a hub mounting ring 1a1, the inner ring of the hub 1b has a hub mounting ring 1b1 adapted to the hub mounting ring 1a1, and the hub mounting ring 1b1 can be detachably fixed to the hub mounting ring 1a1 by a plurality of bolts 1 d. The power system and the speed change system of the central driving type electric drive system assembly are respectively arranged at two sides of the hub bracket 1a, when the tire 1c needs to be replaced or repaired, the hub 1b and the tire 1c can be taken down together only by taking down all bolts 1d (without disassembling the power system and the speed change system), and the traditional mode is completely the same, so that the tire can be quickly replaced, and the convenience of maintenance of the central driving type electric drive system assembly is improved.
Referring to fig. 6 and 7, the hub bracket 1a further includes a power input disc 1a2 coaxially disposed in the hub mounting ring 1a1, and the hub mounting ring 1a1 and the power input disc 1a2 are connected by a plurality of bracket connection ribs 1a3, so that the hub bracket has high structural strength, is stable and reliable, has light weight, and can achieve the purpose of weight reduction.
The power input disc 1a2 has a drive shaft hole 1a21 at the center, and the wall of the drive shaft hole 1a21 has a spline structure, so that power transmission can be performed stably and reliably.
A concave cavity 1a22 is concavely formed at one side of the power input disc 1a2, a power input shaft sleeve 1a23 is arranged at the center of the concave cavity 1a22, and a shaft hole of the power input shaft sleeve 1a23 is the driving shaft hole 1a21. The power input sleeve 1a23 is basically hidden in the concave cavity 1a22, so that the overall appearance is improved.
A plurality of reinforcing ribs 1a24 are arranged in the concave cavity 1a22, the reinforcing ribs 1a24 are circumferentially distributed around the power input shaft sleeve 1a23, and two ends of each reinforcing rib 1a24 are respectively connected with the cavity wall of the concave cavity 1a22 and the outer wall of the power input shaft sleeve 1a23, so that the structural strength of the power input disc 1a2 and the power input shaft sleeve 1a23 can be greatly improved. The surface of the power input disc 1a2 opposite to the concave cavity 1a22 is convexly provided with a circle of annular flange 1a25, and the outer circumferential surface of the flange 1a25 is provided with a plurality of reinforcing lugs 1a26, so that the structural strength of the flange 1a25 can be ensured.
Referring to fig. 8 and 9, the hub 1b further includes a tire mounting ring 1b2 coaxially disposed outside the hub mounting ring 1b1, and the tire mounting ring 1b2 is connected with the hub mounting ring 1b1 through a plurality of hub connecting ribs 1b3, so that the hub has high structural strength, is stable and reliable, has light weight, and can achieve the purpose of weight reduction. And, the wheel hub connecting rib 1b3 has one side surface and subtracts heavy recess 1b31, under the prerequisite of guaranteeing structural strength, realizes subtracting heavy function. The hub mounting ring 1b1 is provided with a mounting sinking table 1b11 which is matched with the hub mounting ring 1a1 on one side surface of the hub mounting ring 1a1, the mounting sinking table 1b11 can position the hub mounting ring 1a1, the assembly efficiency is improved, and the connection reliability of the hub bracket 1a and the hub 1b is improved.
Further, in order to improve the reliability of the hub bracket 1a and the hub 1b, the hub bracket 1a and the hub 1b are integrally formed.
Referring to fig. 1 and 2, the power system includes a motor 3 sleeved on a transmission shaft 2 and used for driving the transmission shaft 2 to rotate, and a power system box 4 wrapped outside the motor 3, wherein the motor 3 and the power system box 4 are fixed on the transmission shaft 2 through a power system locking component 6. The transmission system comprises a transmission mechanism for variable-speed transmission between a transmission shaft 2 and combined wheels and a transmission system box body 5 which is covered outside the transmission mechanism, wherein the transmission mechanism and the transmission system box body 5 are fixed on the transmission shaft 2 through a transmission system locking part 7. It should be noted that, the sizes of the power system case 4 and the gear system case 5 are smaller than the inner ring of the hub mounting ring 1b1, so that the hub bracket 1a and the hub 1b can be detached leftwards, and can be detached rightwards, so that the flexibility is high, and the gear system case is suitable for different situations.
Referring to fig. 1, the power system case 4 includes a power case base 4a for accommodating the motor 3 and a power case cover 4b capable of being covered on the power case base 4a, and the gear system case 5 includes a gear case base 5a for accommodating a gear change mechanism and a gear case cover 5b covered on the gear case base 5 a. After the power box base 4a and the motor 3 are sequentially arranged on the transmission shaft 2, the power box is locked through the power system locking component 6, then the power box cover 4b is covered on the power box base 4a, and then the first end cover 4c of the transmission shaft is covered on the power box cover 4 b. After the transmission base 5a, the speed change mechanism and the transmission case cover 5b are sequentially arranged on the transmission shaft 2, the transmission shaft is locked through the speed change system locking part 7, and then the transmission shaft second end cover 5c is covered on the transmission case cover 5b.
Referring to fig. 1 and 2, the power system locking member 6 and the transmission system locking member 7 are both half-moon keys, and the transmission shaft 2 is provided with half-moon key mounting grooves corresponding to the half-moon keys.
Referring to fig. 1 and 3, the central driving electric drive system assembly further includes a bottom fork 8, and two main pipes of the bottom fork 8 are fixedly connected with the power box base 4a and the gearbox base 5a respectively. When the tire 1c needs to be replaced, the bottom fork 8 is first separated from other components.
Referring to fig. 2, the speed change mechanism includes a primary driving gear 9 fixedly sleeved on the transmission shaft 2, a reduction intermediate shaft 11 parallel to the transmission shaft 2, a primary driven gear 10 fixedly sleeved on the reduction intermediate shaft 11, a hub driving sleeve 13 movably sleeved on the transmission shaft 2, and a secondary driven gear 12 fixedly sleeved on the hub driving sleeve 13, the primary driving gear 9 is meshed with the primary driven gear 10, a secondary driving tooth 11a meshed with the secondary driven gear 12 is arranged on the reduction intermediate shaft 11, the hub driving sleeve 13 can drive the combined wheel to synchronously rotate, and a thrust ball bearing 14 is arranged between the hub driving sleeve 13 and the primary driving gear 9.
The motor 3 drives the transmission shaft 2 to rotate, the transmission shaft 2 drives the primary driving gear 9 to rotate, the primary driving gear 9 drives the primary driven gear 10 to rotate, the primary driven gear 10 drives the speed reduction intermediate shaft 11 to rotate, the secondary driving gear 11a drives the secondary driven gear 12 to rotate, and the secondary driven gear 12 drives the hub driving sleeve 13 to rotate.
Referring to fig. 2, the hub driving sleeve 13 has a primary step surface 13a and a secondary step surface 13b, the protruding height of the primary step surface 13a is higher than that of the secondary step surface 13b, the combined wheel is sleeved on the primary step surface 13a and is in spline fit with the primary step surface 13a, and the secondary driven gear 12 is sleeved on the secondary step surface 13b and is in spline fit with the secondary step surface 13 b.
The motor shaft 3a of the motor 3 is of a hollow shaft sleeve structure, and the motor shaft 3a is sleeved on the transmission shaft 2 and is in spline fit with the transmission shaft 2. The rotor of the motor 3 drives the motor shaft 3a to rotate, and the motor shaft 3a drives the transmission shaft 2 to synchronously rotate with the motor shaft.
Referring to fig. 1 and 2, an encoder 17 is mounted on the transmission shaft 2, and the encoder 17 is located between the first end cover 4c of the transmission shaft and the power box cover 4b of the power box, so that the rotation speeds of the motor 3 and the transmission shaft 2 can be converted into signals for feedback.
Referring to fig. 1, a power box oil seal 15 is disposed between the hub driving sleeve 13 and the power system box body 4, and a gear box oil seal 16 is disposed between the hub driving sleeve 13 and the gear system box body 5, so as to ensure tightness of the power system box body 4 and the gear system box body 5 and prevent oil leakage.
Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and that many similar changes can be made by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (1)
1. A central drive electric drive system assembly, characterized by: the power system and the speed change system are respectively positioned at two sides of the rotary output part, the power system transmits power to the speed change system through the transmission shaft, and the speed change system drives the rotary output part to output power;
the rotary output part is a combined wheel; the combined wheel comprises a wheel hub bracket, a wheel hub and a tire which are coaxially and sequentially arranged from inside to outside; the speed change system drives the hub bracket to drive the combined wheel to rotate; the hub is of a hollow structure and is detachably arranged on the hub bracket; the tire is sleeved on the hub;
the outer ring of the hub bracket is provided with a hub mounting ring, the inner ring of the hub is provided with a hub mounting ring which is matched with the hub mounting ring, and the hub mounting ring can be detachably fixed on the hub mounting ring through a plurality of bolts; the power system and the speed change system of the central driving type electric driving system assembly are respectively arranged at two sides of the hub bracket;
the hub bracket further comprises a power input disc coaxially arranged in the hub mounting ring, and the hub mounting ring and the power input disc are connected through a plurality of bracket connecting ribs;
the center of the power input disc is provided with a driving shaft hole, and the hole wall of the driving shaft hole is of a spline structure;
a concave cavity is formed in one side of the power input disc in a concave manner, a power input shaft sleeve is arranged in the center of the concave cavity, and a shaft hole of the power input shaft sleeve is the driving shaft hole;
a plurality of reinforcing ribs are arranged in the concave cavity, each reinforcing rib is circumferentially distributed around the power input shaft sleeve, and two ends of each reinforcing rib are respectively connected with the cavity wall of the concave cavity and the outer wall of the power input shaft sleeve; a circle of annular flange is formed on the surface of the power input disc opposite to the concave cavity in a protruding way, and a plurality of reinforcing convex blocks are arranged on the peripheral surface of the flange;
the hub also comprises a tire mounting ring coaxially arranged outside the hub mounting ring, and the tire mounting ring is connected with the hub mounting ring through a plurality of hub connecting ribs; one side surface of the hub connecting rib is provided with a weight-reducing groove; the hub mounting ring is provided with a mounting sinking platform which is matched with the hub mounting ring on one side surface of the hub mounting ring;
the hub bracket and the hub are integrally formed;
the power system comprises a motor sleeved on the transmission shaft and used for driving the transmission shaft to rotate and a power system box body wrapped outside the motor, and the motor and the power system box body are fixed on the transmission shaft through a power system locking component; the speed change system comprises a speed change mechanism for speed change transmission between a transmission shaft and combined wheels and a speed change system box body which is covered outside the speed change mechanism, and the speed change mechanism and the speed change system box body are fixed on the transmission shaft through a speed change system locking part; the sizes of the power system box body and the gearbox box body are smaller than the size of the inner ring of the hub mounting ring;
the power system box body comprises a power box base for accommodating the motor and a power box cover capable of being covered on the power box base, and comprises a speed box base for accommodating a speed change mechanism and a speed box cover covered on the speed box base; after the power box base and the motor are sequentially arranged on the transmission shaft, the power box base and the motor are locked through a power system locking part, then the power box cover is covered on the power box base, and then the first end cover of the transmission shaft is covered on the power box cover; after the transmission base, the speed change mechanism and the transmission case cover are sequentially arranged on the transmission shaft, the transmission base, the speed change mechanism and the transmission case cover are locked through a speed change system locking part, and then a second end cover of the transmission shaft is covered on the transmission case cover;
the power system locking component and the speed change system locking component are both half-moon keys, and the transmission shaft is provided with half-moon key mounting grooves which are matched with the corresponding half-moon keys;
the central driving type electric driving system assembly further comprises a bottom fork, and two main pipes of the bottom fork are fixedly connected with the power box base and the gearbox base respectively;
the speed change mechanism comprises a primary driving gear fixedly sleeved on a transmission shaft, a speed reduction intermediate shaft parallel to the transmission shaft, a primary driven gear fixedly sleeved on the speed reduction intermediate shaft, a hub driving sleeve movably sleeved on the transmission shaft and a secondary driven gear fixedly sleeved on the hub driving sleeve, wherein the primary driving gear is meshed with the primary driven gear, the speed reduction intermediate shaft is provided with a secondary driving tooth meshed with the secondary driven gear, the hub driving sleeve can drive a combined wheel to synchronously rotate, and a thrust ball bearing is arranged between the hub driving sleeve and the primary driving gear;
the motor drives the transmission shaft to rotate, the transmission shaft drives the primary driving gear to rotate, the primary driving gear drives the primary driven gear to rotate, the primary driven gear drives the speed reduction intermediate shaft to rotate, the secondary driving gear drives the secondary driven gear to rotate, and the secondary driven gear drives the hub driving sleeve to rotate;
the hub driving sleeve is provided with a primary step surface and a secondary step surface, the protruding height of the primary step surface is higher than that of the secondary step surface, the combined wheel is sleeved on the primary step surface and is in spline fit with the primary step surface, and the secondary driven gear is sleeved on the secondary step surface and is in spline fit with the secondary step surface;
the motor shaft of the motor is of a hollow shaft sleeve structure, and the motor is sleeved on the transmission shaft in a shaft-spline fit manner; the rotor of the motor drives the motor shaft to rotate, and the motor shaft drives the transmission shaft to synchronously rotate with the transmission shaft;
the transmission shaft is provided with an encoder, and the encoder is positioned between the first end cover of the transmission shaft and the power box cover and can convert the rotation speeds of the motor and the transmission shaft into signal forms for feedback;
a power box oil seal is arranged between the hub driving sleeve and the power system box body, and a gearbox oil seal is arranged between the hub driving sleeve and the gearbox system box body.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911413371.1A CN110949119B (en) | 2019-12-31 | 2019-12-31 | Central driving type electric driving system assembly |
| PCT/CN2020/134045 WO2021135826A1 (en) | 2019-12-31 | 2020-12-04 | Central drive type electric drive system assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911413371.1A CN110949119B (en) | 2019-12-31 | 2019-12-31 | Central driving type electric driving system assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110949119A CN110949119A (en) | 2020-04-03 |
| CN110949119B true CN110949119B (en) | 2023-12-22 |
Family
ID=69985270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911413371.1A Active CN110949119B (en) | 2019-12-31 | 2019-12-31 | Central driving type electric driving system assembly |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110949119B (en) |
| WO (1) | WO2021135826A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110949119B (en) * | 2019-12-31 | 2023-12-22 | 西南大学 | Central driving type electric driving system assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1284032A (en) * | 1997-12-11 | 2001-02-14 | 维克特里克斯公司 | Vehicle drive wheel assembly |
| CN102365189A (en) * | 2009-03-27 | 2012-02-29 | 本田技研工业株式会社 | Electrically driven vehicle |
| CN102730150A (en) * | 2011-03-31 | 2012-10-17 | 本田技研工业株式会社 | Electric vehicle |
| CN109301990A (en) * | 2018-11-19 | 2019-02-01 | 苏州蓝石新动力有限公司 | High gear motor assembly, transmission case assembly and electronic vehicle equipment |
| CN211731023U (en) * | 2019-12-31 | 2020-10-23 | 西南大学 | Central drive formula electric drive system assembly |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB871099A (en) * | 1959-05-04 | 1961-06-21 | Filippo Benelli | Improvements relating to motor scooters |
| JP5695471B2 (en) * | 2011-03-31 | 2015-04-08 | 本田技研工業株式会社 | Electric vehicle |
| JP2012214150A (en) * | 2011-03-31 | 2012-11-08 | Honda Motor Co Ltd | Electric vehicle |
| US8602145B2 (en) * | 2011-08-24 | 2013-12-10 | Ta-Yu Su | Driving system for electric vehicle |
| CN209001741U (en) * | 2018-11-19 | 2019-06-18 | 苏州蓝石新动力有限公司 | High gear motor assembly, transmission case assembly and electronic vehicle equipment |
| CN110949119B (en) * | 2019-12-31 | 2023-12-22 | 西南大学 | Central driving type electric driving system assembly |
| CN110920319B (en) * | 2019-12-31 | 2023-12-22 | 西南大学 | Combined wheel for a central drive electric drive system assembly |
-
2019
- 2019-12-31 CN CN201911413371.1A patent/CN110949119B/en active Active
-
2020
- 2020-12-04 WO PCT/CN2020/134045 patent/WO2021135826A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1284032A (en) * | 1997-12-11 | 2001-02-14 | 维克特里克斯公司 | Vehicle drive wheel assembly |
| CN102365189A (en) * | 2009-03-27 | 2012-02-29 | 本田技研工业株式会社 | Electrically driven vehicle |
| CN102730150A (en) * | 2011-03-31 | 2012-10-17 | 本田技研工业株式会社 | Electric vehicle |
| CN109301990A (en) * | 2018-11-19 | 2019-02-01 | 苏州蓝石新动力有限公司 | High gear motor assembly, transmission case assembly and electronic vehicle equipment |
| CN211731023U (en) * | 2019-12-31 | 2020-10-23 | 西南大学 | Central drive formula electric drive system assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110949119A (en) | 2020-04-03 |
| WO2021135826A1 (en) | 2021-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101704340B (en) | Power assembly for two-shift motor vehicle | |
| CN103402787B (en) | Rim assemblies and method | |
| CN101311578A (en) | Driving speed-changing mechanism of electric vehicle | |
| CN202616925U (en) | Automatic speed changing motor of electric motor car | |
| CN110949119B (en) | Central driving type electric driving system assembly | |
| CN101525035B (en) | Combined high-speed motor reduction and double cam automatic transmission integrated device | |
| CN110920319B (en) | Combined wheel for a central drive electric drive system assembly | |
| CN211731023U (en) | Central drive formula electric drive system assembly | |
| CN109624689A (en) | A kind of hub motor of electronic hovercar | |
| CN211730924U (en) | Combined wheel for central driving type electric drive system assembly | |
| CN103507628B (en) | A kind of wheel hub drive and comprise the vehicle of this wheel hub drive | |
| CN102624145A (en) | Automatic speed change motor of battery-operated motorcycle | |
| CN103352963A (en) | Double-power-input speed-changing system | |
| CN201813256U (en) | Transmission mechanism of electromobile rear axle driving variable speed motor | |
| CN202134999U (en) | Automatic gear shifting wheel hub motor transmission mechanism of electric vehicle | |
| CN103158542B (en) | Integrated motor rear-guard rear suspension mechanism | |
| CN201038914Y (en) | Electric vehicle separated shift-variable deceleration motor | |
| CN201169367Y (en) | Motorcycle gear shaft transmission apparatus | |
| CN111055677B (en) | Intelligent central driving type electric drive assembly with transmission sensing function | |
| CN203713520U (en) | Hybrid power driving rear axle | |
| CN202448669U (en) | Driving bridge for electric forklift | |
| CN211731719U (en) | Central driving type electric driving system | |
| CN203543664U (en) | Dual power input driving rear axle assembly | |
| CN203543665U (en) | Dual power input driving system | |
| CN215890977U (en) | Two keep off derailleur |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |