CN203747567U - Variable-speed drive hub of electric vehicle - Google Patents

Variable-speed drive hub of electric vehicle Download PDF

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Publication number
CN203747567U
CN203747567U CN201420144537.0U CN201420144537U CN203747567U CN 203747567 U CN203747567 U CN 203747567U CN 201420144537 U CN201420144537 U CN 201420144537U CN 203747567 U CN203747567 U CN 203747567U
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China
Prior art keywords
wheel hub
steel ring
fixed axis
electric motor
input gear
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Expired - Fee Related
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CN201420144537.0U
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Chinese (zh)
Inventor
李跃岩
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Linhai Heshili Electric Technology Co ltd
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Individual
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Priority to CN201420144537.0U priority Critical patent/CN203747567U/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0061—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electrical machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B60L15/2072—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for drive off
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B60L15/2072—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for drive off
    • B60L15/2081—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for drive off for drive off on a slope
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2220/00—Electrical machine types; Structures or applications thereof
    • B60L2220/40—Electrical machine applications
    • B60L2220/44—Wheel Hub motors, i.e. integrated in the wheel hub
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/421—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/423—Torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/425—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/60—Navigation input
    • B60L2240/64—Road conditions
    • B60L2240/642—Slope of road
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2270/00—Problem solutions or means not otherwise provided for
    • B60L2270/10—Emission reduction
    • B60L2270/14—Emission reduction of noise
    • B60L2270/142—Emission reduction of noise acoustic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)

Abstract

The utility model provides a variable-speed drive hub of an electric vehicle, belongs to the technical field of mechanical engineering, and helps to solve the problems of poor heat dissipation effect, loud noise and low output efficiency of a gear-shifting drive hub of a conventional electric vehicle. The variable-speed drive hub of the electric vehicle comprises a fixation shaft, a hub steel ring, a motor and a speed reduction box, wherein the hub steel ring is positioned on the fixation shaft; the speed reduction box is located in the hub steel ring; and the motor is located at one side of the speed reduction box and is located outside the hub steel ring. The motor comprises a stator and a rotor, wherein the stator is fixedly connected with the fixation shaft, and the rotor is positioned on the fixation shaft. The speed reduction box comprises a box body, an input gear shaft, an output gear shaft and an overrun clutch, wherein the box body is fixedly connected with the fixation shaft; the input gear shaft is connected with the rotor; the output gear shaft is fixedly connected with the hub steel ring; and the rotor and the hub steel ring are connected through a centrifugal clutch. The variable-speed drive hub of the electric vehicle has the advantages of good heat dissipation effect, high universality and small noise.

Description

Electric motor car variable speed drives wheel hub
Technical field
The utility model belongs to mechanical engineering technical field, relates to a kind of driving wheel hub of electric vehicle, particularly a kind of electric motor car variable speed drives wheel hub.
Background technology
Electric motor car be exactly in brief electricity consumption masterpiece be drive locomotive.As electric bicycle and battery-operated motor cycle.
Battery-operated motor cycle comprises vehicle body, drive hub and power supply etc.; Wherein drive hub is driving element.
At present, drive hub speed change gear used mainly contains two kinds, and one is electronic type stepless controller speed change, and another kind is mechanical type speed change.Electronic type stepless controller speed change can obtain from 0 maximum speed to motor, has good speed change curve, but the level of torque that it is exported is directly consistent with the input current size variation of motor; In the time that voltage is constant, the larger required electric current of motor load is also just larger.Mechanical type speed change is divided into step speed change formula and stepless speed change type.Mechanical type speed change can obtain the output torque of different sizes; In the time that input current is constant, by mechanical type deceleration energy, torque is increased, or torque is reduced when speedup.
In Chinese patent literature, record electrically-propelled vehicle shifting driving hub [application number: 201110217964.8; Application publication number: CN102410317A], this drive hub is the drive hub of mechanical type step speed change.It comprises motor, freewheel clutch, centrifugal clutch and multiple gear trains etc.The motor of this drive hub is positioned at hub body, thereby exists the problem of poor radiation, and then can cause temp. of gear-shifting box to raise, the series of problems such as parts reduction in useful life.Motor is high-speed electric expreess locomotive, and drive hub adopts two-stage reduction of speed, and then exists the problem that delivery efficiency is low.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind of electric motor car variable speed drives wheel hub, and the technical problems to be solved in the utility model is how to improve the thermal diffusivity of motor.
The purpose of this utility model can realize by following technical proposal: a kind of electric motor car variable speed drives wheel hub, comprise fixed axis, wheel hub steel ring, motor and reduction box, and wheel hub steel ring is positioned on fixed axis; It is characterized in that, described reduction box is positioned at wheel hub steel ring, and described motor is positioned at a side of reduction box and is positioned at outside wheel hub steel ring; Motor comprises stator and rotor, and stator is fixedly connected with fixed axis, and rotor is positioned on fixed axis; Reduction box comprises casing, input gear axle, output gear shaft and freewheel clutch, and casing is fixedly connected with fixed axis, and input gear axle is connected with rotor, and output gear shaft is fixedly connected with wheel hub steel ring; Between rotor and wheel hub steel ring, be connected by centrifugal clutch.
Centrifugal clutch in this electric motor car variable speed drives wheel hub has the engagement of setting rotating speed.When motor running speed is set engagement rotating speed lower than centrifugal clutch, centrifugal clutch is in released state, and between motor and wheel hub steel ring, by reduction box transmission, reduction box has reduction of speed and increases the effect of turning round, under lower-speed state, improve output torque, be conducive to electric motor car starting and climbing.
When motor running speed is set engagement rotating speed higher than centrifugal clutch, centrifugal clutch, in engagement, by centrifugal clutch transmission, is realized equispeed output between motor and wheel hub steel ring, is conducive to electric motor car and runs at high speed.
Motor is positioned at wheel hub steel ring outside, and motor is fully contacted with air, is conducive to motor radiating, effectively improves the thermal diffusivity of motor; Meanwhile, motor separates with reduction box, stops motor heat and is passed in reduction box, and then ensure that reduction box normally moves.
Motor is slowspeed machine; By side cover and the fixed axis of removal reduction box, replacing wheel hub steel ring, just can make this electric motor car variable speed drives wheel hub become common slowspeed machine.In other words, can be easily from common electric motor car slowspeed machine drive hub repacking cost electric motor car variable speed drives wheel hub, therefore, this electric motor car variable speed drives wheel hub has advantages of that versatility is high.
In above-mentioned electric motor car variable speed drives wheel hub, input gear axle and output gear shaft in described reduction box penetrate in casing; Freewheel clutch comprises star-wheel and the second outer ring, is fixed with the first gear being meshed with the tooth portion of input gear axle on the second outer ring, is fixed with the second gear being meshed with the tooth portion of output gear shaft on star-wheel; The second gear is positioned on casing.In the time that input gear axle rotating speed is greater than output gear shaft rotating speed, freewheel clutch is in engagement, and this state is electric motor car variable speed drives wheel hub low cruise state.In the time that output gear shaft rotating speed is greater than input gear axle rotating speed, freewheel clutch is in released state, and this state is electric motor car variable speed drives wheel hub high-speed cruising state or reversing state.
In above-mentioned electric motor car variable speed drives wheel hub, the output gear shaft in described reduction box and input gear axle rotating speed ratio are 0.7～0.8.Above-mentioned numerical value can ensure to slow down to increase and turn round effect and contribute to low speed driving, can avoid again between motor and wheel hub steel ring by reduction box transmission with poor compared with affecting greatly road-ability by centrifugal clutch transmission speed; Can make smooth transition between reduction box transmission and centrifugal clutch transmission.
In above-mentioned electric motor car variable speed drives wheel hub, between described input gear axle and output gear shaft, be provided with fixed head, described fixed head is fixedly connected with fixed axis, and described casing is fixedly connected with fixed head.This structure makes casing be fixedly connected with fixed axis, and this structure has simple in structure, the advantage of fixation.As preferably, fixed head and fixed axis are by spline joint, and casing is connected by bolt with fixed head, make like this reduction box assemble and convenient disassembly.
In above-mentioned electric motor car variable speed drives wheel hub, described rotor comprises a side cover that is enclosed within the first outer ring on stator and two and lays respectively at stator both sides, and side cover is connected with fixed axis by bearing, and side cover is fixedly connected with the first outer ring.Said structure is realized rotor and is positioned on fixed axis.The side cover of this rotor and the first outer ring can be changed according to actual conditions, and as the first outer ring is replaced by steel ring, this motor is common slowspeed machine.
In above-mentioned electric motor car variable speed drives wheel hub, between described side cover and fixed axis, be provided with the first sealing ring, the first sealing ring is positioned at bearing outside.The first sealing ring makes to form and seal between side cover and fixed axis, and then avoids rainwater and dust and other impurities to enter in motor.
In above-mentioned electric motor car variable speed drives wheel hub, described wheel hub steel ring comprises steel ring, is positioned at the end cap that covers and be positioned at steel ring opposite side that rouses of steel ring one side, input gear axle is through end cap, input gear axle sleeve is on fixed axis, between input gear axle sleeve and fixed axis, be connected by bearing, between input gear axle and end cap, be connected by bearing, between drum lid and fixed axis, be connected by bearing.Said structure is realized wheel hub steel ring and is positioned on fixed axis.This wheel hub steel ring can be changed steel ring or drum lid or end cap according to actual needs, makes wheel hub steel ring more general, and then can form the electric motor car variable speed drives wheel hub of Multiple Type.
In above-mentioned electric motor car variable speed drives wheel hub, between the end cap of described wheel hub steel ring and the side cover of motor, be provided with the second sealing ring.Sealing circle avoids rainwater and dust and other impurities to enter between end cap and side cover, so between above-mentioned end cap and fixed axis and between side cover and fixed axis without sealing ring is set again.Maximum speed between end cap and side cover is far below maximum speed between maximum speed and side cover and fixed axis between end cap and fixed axis, therefore, sealing ring is arranged on and between end cap and side cover, there is the installation of convenience, simplified structure, raising sealing and useful life.
Compared with prior art, the motor of this electric motor car variable speed drives wheel hub and wheel hub steel ring left and right arrange, and have highly versatile, reequip convenient and dismounting and advantage easy to maintenance.Motor directly contacts with air, has advantages of good heat dissipation effect.This electric motor car variable speed drives wheel hub adopts slowspeed machine, has output speed low, the advantage that moment of torsion is large, and drive hub only passes through a speed change in the time of low cruise; When high-speed cruising, equal proportion transmission, therefore has advantages of that transmission efficiency is high; In a word, this electric motor car variable speed drives wheel hub has advantages of that noise is little.The performance that the variable speed drives of this electric motor car simultaneously wheel hub can also improve electric motor car starting, climb and run at high speed.
Brief description of the drawings
Fig. 1 is the perspective view of this electric motor car variable speed drives wheel hub.
Fig. 2 is the perspective view at another visual angle of this electric motor car variable speed drives wheel hub.
Fig. 3 is that this electric motor car variable speed drives wheel hub removes the perspective view after wheel hub steel ring and reduction box.
Fig. 4 is the side-looking structural representation of Fig. 3.
Fig. 5 is that this electric motor car variable speed drives wheel hub removes the perspective view after wheel hub steel ring and Gearbox.
Fig. 6 is the sectional structure schematic diagram of this electric motor car variable speed drives wheel hub.
In figure, 1, fixed axis; 2, wheel hub steel ring; 2a, steel ring; 2b, drum lid; 2c, end cap; 3, motor; 3a, stator; 3b, rotor; 3c, the first outer ring; 3d, side cover; 4, centrifugal clutch; 4a, connecting plate; 4b, ratchet; 4c, ratchet; 4d, spring; 5, reduction box; 5a, casing; 5b, input gear axle; 5c, output gear shaft; 5d, freewheel clutch; 5d1, star-wheel; 5d2, the second outer ring; 5e, fixed head; 5f, the first gear; 5g, the second gear; 6, bearing; 7, the first sealing ring; 8, the second sealing ring; 9, the 3rd sealing ring.
Embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
As shown in Figures 1 to 6, this electric motor car variable speed drives wheel hub comprises fixed axis 1, wheel hub steel ring 2, motor 3, centrifugal clutch 4 and reduction box 5.
With shown in Fig. 6, wheel hub steel ring 2, motor 3 and reduction box 5 are all enclosed within on fixed axis 1 as shown in Figure 1, Figure 2.Motor 3 is positioned at a side of reduction box 5, and the motor 3 that the present embodiment provides is positioned at the left side of reduction box 5.According to actual conditions, motor 3 also can be positioned at the right side of reduction box 5.Reduction box 5 is positioned at wheel hub steel ring 2, and motor 3 is positioned at outside wheel hub steel ring 2.
Motor 3 is slowspeed machine 3; Motor 3 comprises stator 3a and rotor 3b.In stator 3a, contain coil, stator 3a is fixedly connected with fixed axis 1.Rotor 3b is positioned on fixed axis 1, and specifically, rotor 3b comprises a side cover 3d who is enclosed within the first outer ring 3c on stator 3a and two and lays respectively at stator 3a both sides, and two side cover 3d are respectively left cap 3d and right cap 3d; Side cover 3d is connected with fixed axis 1 by bearing 6, and side cover 3d is fixedly connected with the first outer ring 3c.
Reduction box 5 comprises casing 5a, input gear axle 5b, output gear shaft 5c and freewheel clutch 5d, and casing 5a is fixedly connected with fixed axis 1; Input gear axle 5b and output gear shaft 5c pass casing 5a.Output gear shaft 5c in reduction box 5 and input gear axle 5b rotating speed ratio are 0.7～0.8.Specifically, input gear axle 5b and output gear shaft 5c are all enclosed within on fixed axis 1, between input gear axle 5b and fixed axis 1 and between output gear shaft 5c and fixed axis 1, are all connected by bearing 6.
Between input gear axle 5b and output gear shaft 5c, be provided with fixed head 5e, fixed axis 1 is through fixed head 5e, between fixed head 5e and fixed axis 1, by spline joint, the two ends of fixed head 5e and bearing 6 lean, and realize being thus fixedly connected with of fixed head 5e and fixed axis 1.Casing 5a is fixedly connected with fixed head 5e, realizes thus casing 5a and is fixedly connected with fixed axis 1.Casing 5a comprises left box body 5a and right case 5a, and the present embodiment provides fixed head 5e and left box body 5a is bolted.
Freewheel clutch 5d comprises star-wheel 5d1 and is enclosed within the second outer ring 5d2 outside star-wheel 5d1, is fixed with the first gear 5f being meshed with the tooth portion of input gear axle 5b on the second outer ring 5d2; On star-wheel 5d1, be fixed with the second gear 5g being meshed with the tooth portion of output gear shaft 5c, the second gear 5g is positioned on casing 5a by bearing 6.
Between input gear axle 5b and casing 5a and between output gear shaft 5c and casing 5a, be all connected by bearing 6, this structure improves the stability that casing 5a is fixing effectively, and then improves the stability of freewheel clutch 5d operation.
Wheel hub steel ring 2 is positioned on fixed axis 1; Specifically, wheel hub steel ring 2 comprises steel ring 2a, the drum that is positioned at steel ring 2a mono-side covers 2b and be positioned at the end cap 2c of steel ring 2a opposite side.The present embodiment provides end cap 2c and is positioned at the left side of steel ring 2a, and drum covers 2b and be positioned at the right side of steel ring 2a; Be that end cap 2c and above-mentioned right cap 3d are adjacent, there is gap between the two.Input gear axle 5b is through end cap 2c; Between input gear axle 5b and end cap 2c, be connected by bearing 6, drum covers between 2b and fixed axis 1 and is connected by bearing 6; Thus, wheel hub steel ring 2 can stably rotate around fixed axis 1.
Between input gear axle 5b and fixed axis 1, be provided with multiple bearings 6, the quantity that the present embodiment provides is three, for carrying the pressure of end cap 2c to input gear axle 5b, and then the useful life of guarantee drive hub.
The input gear axle 5b of reduction box 5 is connected with rotor 3b, and output gear shaft 5c covers 2b with the drum of wheel hub steel ring 2 and is fixedly connected with; Between rotor 3b and wheel hub steel ring 2, be connected by centrifugal clutch 4.Specifically, centrifugal clutch 4 comprises connecting plate 4a and is set in the ratchet 4b on connecting plate 4a, is hinged with ratchet 4c on ratchet 4b, between ratchet 4c and connecting plate 4a, is also provided with spring 4d.Connecting plate 4a is fixedly connected with right cap 3d, and input gear axle 5b and connecting plate 4a, by spline joint, realize being in transmission connection between input gear axle 5b and rotor 3b thus, have advantages of easy accessibility simultaneously.Ratchet 4b is fixedly connected with end cap 2c.
Enter in drive hub for fear of rainwater and dust, between the left cap 3d of motor 3 and fixed axis 1, be provided with the first sealing ring 7, the first sealing rings 7 and be positioned at bearing 6 outsides.Between the end cap 2c of wheel hub steel ring 2 and the right cap 3d of motor 3, be provided with the outside that the second sealing ring 8, the second sealing rings 8 are positioned at centrifugal clutch 4.The drum of wheel hub steel ring 2 covers and between 2b and fixed axis 1, is provided with the 3rd sealing ring 9, the three sealing rings 9 and is positioned at bearing 6 outsides.
Centrifugal clutch 4 in this electric motor car variable speed drives wheel hub has the engagement of setting rotating speed, and tie point position or the counterweight amount etc. of elastic force, spring 4d and the ratchet 4c of regulating spring 4d can change the size of setting engagement rotating speed.The setting engagement rotating speed of the present embodiment hypothesis centrifugal clutch 4 is 200 revs/min.
When electric motor car starting or climbing or low speed driving, motor 3 rotor 3b rotating speeds are set engagement rotating speed lower than centrifugal clutch 4, ratchet 4c in centrifugal clutch 4 is under the effect of spring 4d elastic force, and ratchet 4c and ratchet 4b are in released state, and centrifugal clutch 4 is in released state; Under this state, between motor 3 and wheel hub steel ring 2, pass through reduction box 5 transmissions.Specifically, rotor 3b drives connecting plate 4a, input gear axle 5b, freewheel clutch 5d, output gear shaft 5c and the wheel hub steel ring 2 of centrifugal clutch 4 successively.
When electric motor car high speed traveling, motor 3 rotor 3b rotating speeds are set engagement rotating speed higher than centrifugal clutch 4; Ratchet 4c overcomes spring 4d elastic force under centrifugal action, and ratchet 4c is meshed with ratchet 4b, and centrifugal clutch 4 is in engagement; Under this state, between motor 3 and wheel hub steel ring 2, pass through centrifugal clutch 4 transmissions.Specifically, rotor 3b drives the connecting plate 4a of centrifugal clutch 4, the star-wheel 5d1 of input gear axle 5b, freewheel clutch 5d successively; Rotor 3b drives connecting plate 4a, ratchet 4b, the wheel hub steel ring 2 of centrifugal clutch 4, the second outer ring 5d2 of output gear shaft 5c, freewheel clutch 5d successively simultaneously.The second outer ring 5d2 rotating speed of freewheel clutch 5d is greater than star-wheel 5d1 rotating speed, and therefore, freewheel clutch 5d is in released state.

Claims (10)

1. an electric motor car variable speed drives wheel hub, comprises fixed axis (1), wheel hub steel ring (2), motor (3), centrifugal clutch (4) and reduction box (5), and wheel hub steel ring (2) is positioned on fixed axis (1); It is characterized in that, described reduction box (5) is positioned at wheel hub steel ring (2), and described motor (3) is positioned at a side of reduction box (5) and is positioned at outside wheel hub steel ring (2); Motor (3) comprises stator (3a) and rotor (3b), and stator (3a) is fixedly connected with fixed axis (1), and rotor (3b) is positioned on fixed axis (1); Reduction box (5) comprises casing (5a), input gear axle (5b), output gear shaft (5c) and freewheel clutch (5d), casing (5a) is fixedly connected with fixed axis (1), input gear axle (5b) is connected with rotor (3b), and output gear shaft (5c) is fixedly connected with wheel hub steel ring (2); Between rotor (3b) and wheel hub steel ring (2), be connected by centrifugal clutch (4).
2. electric motor car variable speed drives wheel hub according to claim 1, is characterized in that, described motor (3) is slowspeed machine (3).
3. electric motor car variable speed drives wheel hub according to claim 1, is characterized in that, the input gear axle (5b) in described reduction box (5) and output gear shaft (5c) penetrate in casing (5a); Freewheel clutch (5d) comprises star-wheel (5d1) and the second outer ring (5d2), on the second outer ring (5d2), be fixed with the first gear (5f) being meshed with the tooth portion of input gear axle (5b), on star-wheel (5d1), be fixed with the second gear (5g) being meshed with the tooth portion of output gear shaft (5c); The second gear (5g) is positioned on casing (5a).
4. electric motor car variable speed drives wheel hub according to claim 3, is characterized in that, the output gear shaft (5c) in described reduction box (5) is 0.7～0.8 with input gear axle (5b) rotating speed ratio.
5. electric motor car variable speed drives wheel hub according to claim 3, it is characterized in that, between described input gear axle (5b) and output gear shaft (5c), be provided with fixed head (5e), described fixed head (5e) is fixedly connected with fixed axis (1), and described casing (5a) is fixedly connected with fixed head (5e).
6. according to the electric motor car variable speed drives wheel hub described in any one in claim 1 to 5, it is characterized in that, described rotor (3b) comprises a side cover (3d) that is enclosed within the first outer ring (3c) on stator (3a) and two and lays respectively at stator (3a) both sides, side cover (3d) is connected with fixed axis (1) by bearing (6), and side cover (3d) is fixedly connected with the first outer ring (3c).
7. electric motor car variable speed drives wheel hub according to claim 6, is characterized in that, between described side cover (3d) and fixed axis (1), is provided with the first sealing ring (7), and the first sealing ring (7) is positioned at bearing (6) outside.
8. electric motor car variable speed drives wheel hub according to claim 6, it is characterized in that, described wheel hub steel ring (2) comprises steel ring (2a), be positioned at the end cap (2c) that rousing of steel ring (2a) side covered (2b) and be positioned at steel ring (2a) opposite side, input gear axle (5b) is through end cap (2c), input gear axle (5b) is enclosed within on fixed axis (1), between input gear axle (5b) cover and fixed axis (1), be connected by bearing (6), between input gear axle (5b) and end cap (2c), be connected by bearing (6), between drum lid (2b) and fixed axis (1), be connected by bearing (6).
9. electric motor car variable speed drives wheel hub according to claim 8, is characterized in that, between the end cap (2c) of described wheel hub steel ring (2) and the side cover (3d) of motor (3), is provided with the second sealing ring (8).
10. electric motor car variable speed drives wheel hub according to claim 6, it is characterized in that, described centrifugal clutch (4) comprises connecting plate (4a) and is set in the ratchet (4b) on connecting plate (4a), on ratchet (4b), be hinged with ratchet (4c), between ratchet (4c) and connecting plate (4a), be also provided with spring (4d); Connecting plate (4a) is fixedly connected with motor side cover (3d), and input gear axle (5b) passes through spline joint with connecting plate (4a); Ratchet (4b) is fixedly connected with end cap (2c).
CN201420144537.0U 2014-03-27 2014-03-27 Variable-speed drive hub of electric vehicle Expired - Fee Related CN203747567U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103840604A (en) * 2014-03-27 2014-06-04 李跃岩 Electric vehicle variable speed drive hub
CN106300789A (en) * 2015-06-17 2017-01-04 舍弗勒技术股份两合公司 Motor, motor and transmission system and vehicle with system
CN107606093A (en) * 2016-07-11 2018-01-19 罗伯特·博世有限公司 Gearbox, drive system and electric vehicle for electric vehicle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103840604A (en) * 2014-03-27 2014-06-04 李跃岩 Electric vehicle variable speed drive hub
CN106300789A (en) * 2015-06-17 2017-01-04 舍弗勒技术股份两合公司 Motor, motor and transmission system and vehicle with system
CN107606093A (en) * 2016-07-11 2018-01-19 罗伯特·博世有限公司 Gearbox, drive system and electric vehicle for electric vehicle

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Effective date of registration: 20160512

Address after: 317000, Zhejiang, Linhai City, Jiangnan street, Xia Pu village, Chun Road

Patentee after: Linhai Heshili Electric Technology Co.,Ltd.

Address before: 318020 No. 76, Xintang garden, Huangyan District, Zhejiang, Taizhou

Patentee before: Li Yueyan

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Granted publication date: 20140730