CN113022776A - Two-speed in-wheel motor and vehicle that can shift gears automatically - Google Patents
Two-speed in-wheel motor and vehicle that can shift gears automatically Download PDFInfo
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- CN113022776A CN113022776A CN202110424198.6A CN202110424198A CN113022776A CN 113022776 A CN113022776 A CN 113022776A CN 202110424198 A CN202110424198 A CN 202110424198A CN 113022776 A CN113022776 A CN 113022776A
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- Prior art keywords
- clutch
- end cover
- speed
- gear
- centrifugal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M7/00—Motorcycles characterised by position of motor or engine
- B62M7/12—Motorcycles characterised by position of motor or engine with the engine beside or within the driven wheel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D43/00—Automatic clutches
- F16D43/02—Automatic clutches actuated entirely mechanically
- F16D43/04—Automatic clutches actuated entirely mechanically controlled by angular speed
- F16D43/14—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members
- F16D43/16—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members with clutching members having interengaging parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/46—Gearings having only two central gears, connected by orbital gears
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/02—Machines with one stator and two or more rotors
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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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- 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
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D43/00—Automatic clutches
- F16D43/02—Automatic clutches actuated entirely mechanically
- F16D43/04—Automatic clutches actuated entirely mechanically controlled by angular speed
- F16D43/14—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members
- F16D2043/145—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members the centrifugal masses being pivoting
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
The invention discloses a two-speed hub motor capable of automatically shifting gears and a vehicle, and relates to the field of hub motors. The main point of the technical scheme is that the spindle comprises a spindle, wherein a hub and an end cover which are connected with each other are supported on the spindle in a rolling manner, a core assembly is arranged on the spindle, and the core assembly comprises a first rotor and a second rotor which are connected with each other; the main shaft is respectively provided with a first gear planetary speed reducing assembly connected between the first rotor and the hub and a second gear planetary speed reducing assembly connected between the second rotor and the end cover; the second gear planetary reduction assembly comprises a centrifugal driving assembly connected with the end cover, and the centrifugal driving assembly controls transmission between the second rotor and the end cover according to the rotating speed of the end cover. The invention can automatically realize the switching of the two gears, improve the riding experience and prolong the service life.
Description
Technical Field
The invention relates to the field of hub motors, in particular to a two-speed hub motor capable of automatically shifting gears and a vehicle.
Background
The hub motor of the common electric power-assisted bicycle in the current market comprises two structural types of direct drive and gear reduction. The rotor of the direct drive motor is the wheel hub, and the rotor of the gear reduction motor is input to the wheel hub through the gear reduction mechanism. The two structures have no mechanical speed change function, cannot realize the conversion of torque and speed on the output of the motor, and have low operation efficiency.
The prior Chinese patent with the publication number of CN211995141U discloses an electric vehicle hub motor, which comprises a hub body and a fixed shaft, wherein the fixed shaft is sleeved with a motor, a fixed-shaft gear train gear assembly and a centrifugal clutch structure, the fixed-shaft gear train gear assembly is arranged on a motion output right end cover of the motor through an overrunning clutch, and the centrifugal clutch structure is arranged on a motion output left end cover of the motor; when the motor rotates along one direction, the overrunning clutch can drive the gear assembly of the ordinary gear train to drive the hub body to rotate, and the centrifugal clutch structure is in a separated state; when the motor rotates along the other direction, the hub body is driven to rotate through the centrifugal clutch structure, and the overrunning clutch is in a separated state.
Although the hub motor of the electric vehicle comprises two gears of a resisting gear and a high gear, the switching of the gears needs to change the electric rotating direction, and automatic gear shifting cannot be realized in the riding process.
The current chinese patent with publication number CN1112071160A discloses an inner swing type centrifugal clutch of throwing block, which comprises a central shaft, a motor and a hub, wherein the left side of the motor is connected with the left inner cover of the motor through an overrunning clutch and a planetary assembly, the outer side of the planetary assembly is connected with a brake piece through a left end cover, the right side of the motor is connected with an inner swing type throwing block mechanism through a right inner cover of the motor, the outer side of the inner swing type throwing block mechanism is connected with a right end cover, and the right end cover and the left end cover are both connected with the hub.
In the internal swing type flail block centrifugal clutch, at low speed, the motor drives the left end cover to rotate through the overrunning clutch and the planet assembly so as to drive the hub to move at low speed; at high speed, the right inner cover of the motor drives the inner swing type flail block mechanism to act to drive the right end cover to rotate so as to drive the hub to move at high speed.
However, in the two types of in-wheel motor structures, a gear reduction motor structure is formed at a low speed, a direct-drive motor structure is formed at a high speed, the difference between the transmission ratio of the low speed and the transmission ratio of the high speed is large, the running efficiency is influenced, and on the other hand, safety accidents are easy to occur in sudden increase of the rotating speed during riding, the riding experience is influenced, and the service life is influenced.
In addition, the centrifugal clutches in the two hub motor structures are connected with the motor, namely, the actions of the centrifugal clutches are controlled through the rotating speed of the motor. However, for the above mentioned internal pendulum type centrifugal clutch with flail block, when the electric vehicle is not required to start up on a downhill or in a sliding mode, the hub is kept in a high speed state, the overrunning clutch is in an overrunning state, the motor does not rotate, the centrifugal clutch is reset to an initial state, when the rider starts up again, if the hub is still in a high speed state, the overrunning clutch is firstly clutched to enter a low speed gear after the motor rotates, and then the high speed gear is switched, so that the riding experience is affected by frequent gear switching, and the service life is affected by the component failure.
Disclosure of Invention
Aiming at the defects in the prior art, one of the purposes of the invention is to provide a two-speed hub motor capable of automatically shifting gears, which can automatically realize the switching of two gears, improve the riding experience and prolong the service life.
In order to achieve the purpose, the invention provides the following technical scheme:
a two-speed hub motor capable of automatically shifting gears comprises a main shaft, wherein a hub and an end cover which are connected with each other are supported on the main shaft in a rolling manner, a core assembly is arranged on the main shaft, and the core assembly comprises a first rotor and a second rotor which are connected with each other;
the main shaft is respectively provided with a first gear planetary speed reducing assembly connected between the first rotor and the hub and a second gear planetary speed reducing assembly connected between the second rotor and the end cover;
the second gear planetary reduction assembly comprises a centrifugal driving assembly connected with the end cover, and the centrifugal driving assembly controls transmission between the second rotor and the end cover according to the rotating speed of the end cover.
Further, the first-gear planetary reduction assembly includes:
the first sun gear is fixedly connected with the first rotor;
the planetary clutch is sleeved on the main shaft, and a first planetary wheel meshed with the first sun gear is arranged on the planetary clutch; and
and the first inner gear ring is fixedly arranged in the hub and meshed with the first planet gear.
Further, the second planetary reduction assembly includes:
the second sun gear is fixedly connected with the second rotor;
the planet carrier is sleeved on the main shaft, and a second planet wheel meshed with the second sun wheel is arranged on the planet carrier;
a second inner gear ring meshed with the second planet gear; and the number of the first and second groups,
the clutch component is borne between the second inner gear ring and the end cover;
the centrifugal driving assembly limits and releases the clutch assembly according to the rotating speed of the end cover, so that transmission between the second rotor and the end cover is controlled.
Furthermore, the clutch assembly comprises a clutch inner ring, a clutch outer ring, a clutch driving piece and an elastic piece, wherein the clutch driving piece and the elastic piece are arranged between the clutch inner ring and the clutch outer ring, the clutch inner ring is linked with the end cover along the circumferential direction, and the clutch outer ring is linked with the second inner gear ring along the circumferential direction.
Further, a transmission frame which is linked with the clutch outer ring along the circumferential direction is fixedly arranged on the second inner gear ring.
Furthermore, the centrifugal driving assembly comprises a centrifugal block and a limiting plate, a release groove matched with the clutch driving piece is arranged in the limiting plate, and a shaft rod connected with the end cover penetrates through the centrifugal block;
when the centrifugal block is in a contraction state, the limiting plate limits the clutch driving piece, so that the clutch inner ring and the clutch outer ring cannot be driven by the clutch driving piece; after the centrifugal block rotates around the shaft rod and is thrown away, the limiting plate is driven to rotate, the clutch driving piece is embedded into the release groove, and therefore the clutch outer ring and the clutch inner ring are driven through the clutch driving piece.
Furthermore, the centrifugal block is provided with a swing arm for driving the limiting plate to rotate.
Further, the centrifugal block number is at least two, and the centrifugal driving assembly further comprises an elastic resetting piece connected with only one centrifugal block.
Furthermore, the end wall is fixed in the end cover and is provided with a fixing seat connected with the centrifugal driving assembly and the clutch inner ring, and the fixing seat can be used for radially limiting the centrifugal block.
Another object of the present invention is to provide a vehicle including the two-speed in-wheel motor, specifically, the vehicle may be a vehicle for riding, including a power-assisted bicycle, an electric vehicle (including two-wheel, three-wheel and four-wheel), etc., or a vehicle for transportation, including an electric transportation vehicle, an electric transportation frame, etc., or an electric wheelchair, etc., without limitation.
In conclusion, the invention has the following beneficial effects:
1. by adopting the first-gear planetary reduction assembly and the second-gear planetary reduction assembly, the transmission ratio difference between the first gear and the second gear can be effectively controlled, so that the driving safety and riding experience are optimized;
2. the centrifugal driving assembly is connected with the end cover for outputting the rotating speed, so that the gear shifting frequency can be reduced, the service life is prolonged, the riding experience is optimized, and better and smooth speed change experience is obtained;
3. the invention outputs mechanical speed change to the hub motor, realizes the conversion of torque and speed through the mechanical speed change, enables the motor to work and output in a high-efficiency interval, and improves the operation efficiency.
Drawings
Fig. 1 is a schematic overall structure diagram of a two-speed in-wheel motor capable of automatic gear shifting in embodiment 1;
FIG. 2 is an exploded view of a two-speed in-wheel motor capable of automatic shifting according to embodiment 1;
fig. 3 is a sectional view of the second planetary reduction assembly in embodiment 1;
FIG. 4 is a first schematic structural view of a centrifugal driving assembly according to embodiment 1;
fig. 5 is a schematic structural diagram of a centrifugal driving assembly in embodiment 1.
In the figure: 1. a main shaft; 21. a hub; 22. an end cap; 31. a first rotor; 32. a second rotor; 4. a first gear planetary reduction assembly; 5. a second-gear planetary reduction assembly; 511. a second sun gear; 512. a planet carrier; 513. a second planet wheel; 514. a second ring gear; 515. positioning the bearing; 52. a transmission frame; 531. a pawl seat; 532. a pawl; 533. a ratchet wheel; 541. a fixed seat; 542. a centrifugal block; 5421. a shaft lever; 5422. a pin; 543. a limiting plate; 5431. a relief groove; 5432. a limiting groove; 5433. a drive aperture; 544. swinging arms; 5441. a drive rod.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Example 1:
a two-speed hub motor capable of automatically shifting gears is disclosed, referring to fig. 1 to 5, and comprises a main shaft 1, wherein a hub 21 and an end cover 22 which are connected with each other are supported on the main shaft 1 in a rolling way, and the hub 21 and the end cover 22 are connected to form a complete shell for outputting rotating speed; the main shaft 1 is provided with a core assembly, the core assembly comprises a first rotor 31 and a second rotor 32 which are connected with each other, the first rotor 31 and the second rotor 32 are connected through screws to realize synchronous rotation and used for inputting an initial rotating speed, and the core assembly further comprises a stator fixedly sleeved on the main shaft 1; the main shaft 1 is respectively provided with a first-gear planetary speed reducing assembly 4 connected between the first rotor 31 and the hub 21 and a second-gear planetary speed reducing assembly 5 connected between the second rotor 32 and the end cover 22; the second gear planetary reduction assembly 5 includes a centrifugal drive assembly connected to the end cover 22, which controls the transmission between the second rotor 32 and the end cover 22 according to the rotational speed of the end cover 22.
Referring to fig. 2, the first-gear planetary reduction assembly 4 includes a first sun gear, a planetary clutch and a first inner gear ring, wherein the first sun gear is fixedly connected with the first rotor 31 through a screw, the first inner gear ring is fixedly embedded in the wheel hub 21, and the planetary clutch is provided with a first planetary gear engaged with the first sun gear and the first inner gear ring; in this embodiment, the planetary clutch is connected with the main shaft 1 through a key slot, and the planetary clutch belongs to the prior art and is not described herein.
Referring to fig. 2 to 5, the second planetary reduction assembly includes a second sun gear 511, a planet carrier 512 and a second ring gear 514, wherein the second sun gear 511 is fixedly connected with the second rotor 32 through screws, the planet carrier 512 is fixedly connected with the main shaft 1 through a key-slot fit, and the planet carrier 512 is provided with second planet gears 513 engaged with the second sun gear 511 and the second ring gear 514: in this embodiment, a positioning bearing 515 is arranged between the planet carrier 512 and the second inner gear ring 514, and the second inner gear ring 514 is positioned by the positioning bearing 515; a clutch assembly is arranged between the second ring gear 514 and the end cover 22, and the centrifugal driving assembly limits and releases the clutch assembly according to the rotating speed of the end cover 22, so that the transmission between the second rotor 32 and the end cover 22 is controlled.
Referring to fig. 3 and 5, the clutch assembly includes a clutch inner ring, a clutch outer ring, and a clutch driving member and an elastic member disposed therebetween, the clutch inner ring is circumferentially linked with the end cover 22, and the clutch outer ring is circumferentially linked with the second ring gear 514; in the embodiment, the clutch component adopts a ratchet wheel and pawl component, and in other optional embodiments, clutches such as a one-way bearing and the like can be adopted without limitation; specifically, the clutch inner ring is a pawl seat 531, the clutch outer ring is a ratchet 533, the clutch driving piece is a pawl 532, and the elastic piece is a spring ring; the end portion of the second inner gear ring 514 in this embodiment is fixedly provided with a transmission frame 52 linked with the ratchet wheel 533 along the circumferential direction, the ratchet wheel 533 is embedded in the transmission frame 52, specifically, the inner side wall of the transmission frame 52 and the outer side wall of the ratchet wheel 533 are respectively provided with protrusions (not shown in the drawings) arranged at intervals, circumferential transmission is realized by the protrusions, and meanwhile, a buffering effect can be achieved, and riding experience is improved.
Referring to fig. 3 to 5, the centrifugal driving assembly includes a centrifugal block 542 and a limiting plate 543, a release groove 5431 matching with the pawl 532 is provided in the limiting plate 543, and a shaft 5421 connected with the end cap 22 is provided on the centrifugal block 542 in a penetrating manner; when the centrifugal block 542 is in a contracted state, the limiting plate 543 limits the pawl 532, so that the pawl seat 531 and the ratchet 533 cannot be driven by the pawl 532; after the centrifugal block 542 rotates around the shaft rod 5421 and is thrown away, the centrifugal block drives the limiting plate 543 to rotate, so that the pawl 532 is embedded into the release groove 5431, and the pawl seat 531 and the ratchet 533 are driven by the pawl 532; under the elastic force action of the spring ring, the engagement end of the pawl 532 can be lifted and then engaged with the ratchet wheel 533, and the limit of the limit plate 543 on the pawl 532 is to press the engagement end of the pawl 532, which cannot be lifted.
Referring to fig. 5, a swing arm 544 for driving the limiting plate 543 to rotate is disposed on the centrifugal block 542, specifically, the centrifugal block 542 and the swing arm 544 are fixedly connected through a pin 5422, that is, the swing arm 544 is equivalent to an extension arm of the centrifugal block 542; the swing arm 544 is provided with a driving rod 5441, and the limiting plate 543 is provided with a driving hole 5433 matched with the driving rod 5441; in this embodiment, after the centrifugal block 542 rotates around the shaft rod 5421 and is thrown away, the swing arm 544 rotates synchronously with the centrifugal block, and then the driving rod 5441 drives the limiting plate 543 to rotate; the arrangement of the swing arm 544 is beneficial to controlling the size of the limiting plate 543, in other optional embodiments, the centrifugal block 542 can directly drive the limiting plate 543 to rotate, and no limitation is made here.
Referring to fig. 5, in the embodiment, the centrifugal weights 542 are two, and the centrifugal driving assembly further includes an elastic restoring member connected to only one centrifugal weight 542 thereof; the elastic reset member in this embodiment is a torsion spring (not shown in the drawings), and the elastic force of the torsion spring makes the centrifugal block 542 have a tendency to reset to the contracted state; the number of the centrifugal blocks 542 is two, and if one centrifugal block 542 is not accurately reset, the limiting plate 543 cannot be accurately reset; the torsion springs with the same specification are different from one another, so that only one torsion spring is arranged to promote the reset of the centrifugal block 542, the accurate reset of the limiting plate 543 can be guaranteed, and the smooth switching between the limiting state and the releasing state is guaranteed.
Referring to fig. 3 to 5, in the embodiment, a fixing seat 541 connected to the centrifugal driving component and the pawl seat 531 is fixedly disposed on an inner end wall of the end cover 22, and the fixing seat 541 can radially limit the centrifugal block 542; specifically, the fixed seat 541 and the end cover 22, and the fixed seat 541 and the pawl seat 531 are all fixedly connected by screws; the shaft 5421 of the centrifugal block 542 is embedded in the inner end wall of the fixing seat 541, and the fixing seat 541 includes a circumferential side wall capable of radially limiting the centrifugal block 542; in other alternative embodiments, the fixing seat 541 may also be integrally formed with the end cover 22, and the structure of the fixing seat 541 and the end cover 22 in this embodiment are separated, so that assembly and maintenance are facilitated.
The working principle is as follows:
when the first gear is at a low speed, the motor is in a starting stage and needs to reduce speed and increase torque, and the first rotor 31 drives the hub 21 to rotate through the first-gear planetary speed reducing assembly 4, so that power output is realized; at this time, the rotation speeds of the hub 21 and the end cover 22 do not reach the speed change point, the centrifugal block 542 is in the contraction state, the clutch assembly cannot transmit, and therefore the rotation speed of the second rotor 32 cannot be transmitted to the end cover;
when the second gear is high, the motor needs to increase speed and reduce torque, the rotating speed of the hub 21 and the end cover 22 reaches a speed change point, the centrifugal block 542 rotates to a throwing-away state, the clutch assembly is switched to a meshing state, and the rotating speed of the second rotor 32 is transmitted to the end cover 22 through the second gear planetary reduction assembly 5, so that power output is realized; the rotating speed of the second rotor 32 output to the end cover 22 after passing through the second-gear planetary reduction assembly 5 is greater than the rotating speed of the first rotor 31 output to the hub 21 after passing through the first-gear planetary reduction assembly 4, so that the planetary clutch is in an overrunning state in the second-gear high-speed state.
When the vehicle is in a downhill state or slides without starting, the hub 21 and the end cover 22 are still kept in a high-speed state, the planetary clutch and the clutch assembly are both in an overrunning state at the moment, the first rotor 31 and the second rotor 32 do not rotate, when the hub 21 and the end cover 22 are kept in the high-speed state and are started again, the centrifugal block 542 is still kept in a throwing state according to the rotating speed of the end cover 22, the motor directly continues to work in the second gear state without switching gears, the number of gear shifting times can be reduced, the service life of the motor is prolonged, and the riding experience is improved.
Example 2:
a vehicle including the two-speed in-wheel motor according to embodiment 1, specifically, the vehicle may be a vehicle for riding, including a power-assisted bicycle, an electric vehicle (including two-wheel, three-wheel and four-wheel), etc., a vehicle for transportation, including an electric transportation vehicle, an electric transportation frame, etc., or an electric wheelchair, etc., without limitation.
Claims (10)
1. A two-speed hub motor capable of automatically shifting gears comprises a main shaft, wherein a hub and an end cover which are connected with each other are supported on the main shaft in a rolling manner, a core assembly is arranged on the main shaft, and the core assembly comprises a first rotor and a second rotor which are connected with each other;
the method is characterized in that: the main shaft is respectively provided with a first gear planetary speed reducing assembly connected between the first rotor and the hub and a second gear planetary speed reducing assembly connected between the second rotor and the end cover;
the second gear planetary reduction assembly comprises a centrifugal driving assembly connected with the end cover, and the centrifugal driving assembly controls transmission between the second rotor and the end cover according to the rotating speed of the end cover.
2. The automatically shiftable two-speed in-wheel motor according to claim 1, wherein: the first-gear planetary reduction assembly comprises:
the first sun gear is fixedly connected with the first rotor;
the planetary clutch is sleeved on the main shaft, and a first planetary wheel meshed with the first sun gear is arranged on the planetary clutch; and
and the first inner gear ring is fixedly arranged in the hub and meshed with the first planet gear.
3. The automatically shiftable two-speed in-wheel motor according to claim 1, wherein: the second planetary reduction assembly includes:
the second sun gear is fixedly connected with the second rotor;
the planet carrier is sleeved on the main shaft, and a second planet wheel meshed with the second sun wheel is arranged on the planet carrier;
a second inner gear ring meshed with the second planet gear; and the number of the first and second groups,
the clutch component is borne between the second inner gear ring and the end cover;
the centrifugal driving assembly limits and releases the clutch assembly according to the rotating speed of the end cover, so that transmission between the second rotor and the end cover is controlled.
4. The automatically shiftable two-speed in-wheel motor according to claim 3, wherein: the clutch assembly comprises a clutch inner ring, a clutch outer ring, a clutch driving piece and an elastic piece, wherein the clutch driving piece and the elastic piece are arranged between the clutch inner ring and the clutch outer ring, the clutch inner ring is linked with the end cover along the circumferential direction, and the clutch outer ring is linked with the second inner gear ring along the circumferential direction.
5. The automatically shiftable two-speed in-wheel motor according to claim 4, wherein: and a transmission frame which is linked with the clutch outer ring along the circumferential direction is fixedly arranged on the second inner gear ring.
6. The automatically shiftable two-speed in-wheel motor according to claim 4, wherein: the centrifugal driving assembly comprises a centrifugal block and a limiting plate, a release groove matched with the clutch driving piece is formed in the limiting plate, and a shaft rod connected with the end cover penetrates through the centrifugal block;
when the centrifugal block is in a contraction state, the limiting plate limits the clutch driving piece, so that the clutch inner ring and the clutch outer ring cannot be driven by the clutch driving piece; after the centrifugal block rotates around the shaft rod and is thrown away, the limiting plate is driven to rotate, the clutch driving piece is embedded into the release groove, and therefore the clutch outer ring and the clutch inner ring are driven through the clutch driving piece.
7. The automatically shiftable two-speed in-wheel motor according to claim 6, wherein: the centrifugal block is provided with a swing arm used for driving the limiting plate to rotate.
8. The automatically shiftable two-speed in-wheel motor according to claim 6, wherein: the centrifugal driving assembly comprises at least two centrifugal blocks, and further comprises an elastic resetting piece connected with only one centrifugal block.
9. The automatically shiftable two-speed in-wheel motor according to claim 6, wherein: the centrifugal block limiting device comprises an end cover, a centrifugal driving assembly and a clutch inner ring, wherein the end cover is provided with a centrifugal block, the end cover is provided with a clutch inner ring, the clutch inner ring is arranged in the end cover, and the end cover is provided with a fixing seat which is fixedly connected with the centrifugal driving assembly and the clutch inner ring and can radially.
10. A vehicle, characterized in that: comprising a two-speed hub electric machine according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110424198.6A CN113022776A (en) | 2021-04-20 | 2021-04-20 | Two-speed in-wheel motor and vehicle that can shift gears automatically |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110424198.6A CN113022776A (en) | 2021-04-20 | 2021-04-20 | Two-speed in-wheel motor and vehicle that can shift gears automatically |
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|---|---|
| CN113022776A true CN113022776A (en) | 2021-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110424198.6A Pending CN113022776A (en) | 2021-04-20 | 2021-04-20 | Two-speed in-wheel motor and vehicle that can shift gears automatically |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114132427A (en) * | 2021-11-26 | 2022-03-04 | 八方电气(苏州)股份有限公司 | Integrated double centrifugal clutch assembly and automatic speed change hub applying same |
| CN114228897A (en) * | 2021-11-26 | 2022-03-25 | 八方电气(苏州)股份有限公司 | An integrated structure of centrifugal clutch components and an automatic transmission hub with a large transmission ratio |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106494563A (en) * | 2016-12-21 | 2017-03-15 | 张家港川梭车业有限公司 | A kind of gear ring center wheel is fixed single-wheel and directly drives many gear fully-automatic gearboxs |
| CN108974243A (en) * | 2018-09-12 | 2018-12-11 | 昆山唐泽新能源科技有限公司 | A kind of fluid drive flower-drum |
| CN209839076U (en) * | 2019-05-22 | 2019-12-24 | 张家港川梭车业有限公司 | Three-gear automatic gear shifting transmission |
| CN211592846U (en) * | 2020-01-21 | 2020-09-29 | 倪隆裕 | Unilateral drive gear shifting hub |
| CN215361728U (en) * | 2021-04-20 | 2021-12-31 | 八方电气(苏州)股份有限公司 | Two-speed in-wheel motor and vehicle that can shift gears automatically |
-
2021
- 2021-04-20 CN CN202110424198.6A patent/CN113022776A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106494563A (en) * | 2016-12-21 | 2017-03-15 | 张家港川梭车业有限公司 | A kind of gear ring center wheel is fixed single-wheel and directly drives many gear fully-automatic gearboxs |
| CN108974243A (en) * | 2018-09-12 | 2018-12-11 | 昆山唐泽新能源科技有限公司 | A kind of fluid drive flower-drum |
| CN209839076U (en) * | 2019-05-22 | 2019-12-24 | 张家港川梭车业有限公司 | Three-gear automatic gear shifting transmission |
| CN211592846U (en) * | 2020-01-21 | 2020-09-29 | 倪隆裕 | Unilateral drive gear shifting hub |
| CN215361728U (en) * | 2021-04-20 | 2021-12-31 | 八方电气(苏州)股份有限公司 | Two-speed in-wheel motor and vehicle that can shift gears automatically |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114132427A (en) * | 2021-11-26 | 2022-03-04 | 八方电气(苏州)股份有限公司 | Integrated double centrifugal clutch assembly and automatic speed change hub applying same |
| CN114228897A (en) * | 2021-11-26 | 2022-03-25 | 八方电气(苏州)股份有限公司 | An integrated structure of centrifugal clutch components and an automatic transmission hub with a large transmission ratio |
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