CN102420494B - Variable speed wheel-disc integrated mid-motor in electrical bicycle - Google Patents

Variable speed wheel-disc integrated mid-motor in electrical bicycle Download PDF

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Publication number
CN102420494B
CN102420494B CN 201110445864 CN201110445864A CN102420494B CN 102420494 B CN102420494 B CN 102420494B CN 201110445864 CN201110445864 CN 201110445864 CN 201110445864 A CN201110445864 A CN 201110445864A CN 102420494 B CN102420494 B CN 102420494B
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China
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motor
bearing
stator
end cap
sprocket wheel
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Expired - Fee Related
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CN 201110445864
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CN102420494A (en
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沈志颖
吕锡成
尤素刚
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Nanjing Nadia Electromechanical Technological Co ltd
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Nanjing Nadia Electromechnical Technological Co Ltd
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Publication of CN102420494B publication Critical patent/CN102420494B/en
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Abstract

The invention relates to a variable speed wheel-disc integrated mid-motor in an electrical bicycle. The central motor is arranged on a five-way joint on a frame of the electrical bicycle, and can be driven electrically, manually, both electrically and manually or respectively electrically and manually without influence. The motor is low in energy consumption, stable and reliable in force transmission and high in climbing capability in motions. The motor comprises a left screw cap, a first bearing, a motor center shaft, a first screw, an inner motor end cover, stator silicon steel sheets, a second bearing, a stator inner core, a third bearing, a first one-way clutch, an internal gear, a planet carrier, a fourth bearing, a chain wheel, a second one-way clutch, a second screw, a fifth bearing, a right lock nut, an internal gear shaft, planetary gears, an outer motor end cover, magnetic steels and a chain wheel fixing ring.

Description

The integrated mid-motor of electric bicycle internal speed-changing motor wheel disc
Technical field
What the present invention relates to is the integrated mid-motor of a kind of electric bicycle internal speed-changing motor wheel disc, be installed on the five-way of electric bicycle vehicle frame middle part, can driven by power, manpower driving, manpower and electric power is common drives or drive respectively, do not influence mutually, energy consumption is little in the motion, the transmission of power is reliable and stable, and climbing capacity is strong.
Technical background
At present, the hub-type motor is still the crucial matching component of drive system of electric motor vehicle.Though brushless electric machine major part has replaced brush motor, all in all production technology falls behind, and almost all still is manual coiling so far.The high gear reducing motor has the advantage that moment of torsion is big, climbing capacity is strong, but because design and manufacturing technology does not reach a standard as yet fully, and quality problems happen occasionally, still fails to become main product and replace the low speed brushless hub electric motor.In addition, the reliability of controller (repair rate) still only can be controlled about 1-3% preferably at present, and the quality of driving control system integral body still is in than low water-mark.
Shortcoming and deficiency that existing small-sized electric car wheel hub motor product exists are: low speed wheel hub motor climbing capacity is poor, and efficient reduces under the high pulling torque; Thereby motor diameter and volume do bigger and bigger, accomplishes 222mm, 266mm gradually from 142mm, 153mm, 205mm, because the metal consumptive material is many, the motor heaviness causes power and energy density very low, does not meet the requirements of the times of conservation-minded society and lightness.In addition, because the motor magnetic air gap is little, motor housing directly bears the most of load of car load, rotor permanent magnetism sheet and stator core scratch, magnetic sheet easily takes place under heavy duty come off, and motor can't rotate so that the catastrophe failure that can't ride.
The problem that has the gear hub motor to exist at present mainly is at a high speed: Gear Transmission Design, manufacturing technology are still immature, product ubiquity efficient is not high, noise is big, the phenomenon of easy tooth-breaking, pawl, and most of product is the semiaxis structure, bearing capacity is poor, and the electric motor car rear axle need bear about 70% (namely axle is heavy) up to total load of whole load-carryings, so easily cause the generation of accident.
At present, the motor-driven technology of small-sized electric car still later wheel hub motor type of drive is main, and it is simple in structure, and low cost of manufacture is still the main product in electric motor car market now.Because the rear-wheel hub motor has occupied back shaft position, thereby can not image height shelves bicycle be installed by speed gear mounted in rear hub or outer speed changer like that, car load can only depend on power performance---torque, the rotary speed property of motor fully for the adaptive capacity of different road conditions, low-speed big facing the wind or the ability of riding such as climbing will be very limited, can't expand.
The front-wheel hub motor drive mode only accounts for very small scale all the time, and there is the wretched insufficiency that influences people's control stability problem of riding in this mode.The front and back wheel product of type of drive simultaneously only accounts for few part, is detected in some external product at present, and its power is front and back two motor sums, thereby actuating force is powerful, and it is strong to adapt to the complex road surface ability, and acceleration performance is good, and climbing capacity is big.But because power consumption is excessive, and battery power is limited, and the continual mileage that once charges is short, and the front and back wheel motor need coordinate control, only is suitable for special purpose and uses.
Summary of the invention
The present invention seeks to provides a kind of electric bicycle internal speed-changing motor wheel disc integrated mid-motor at above-mentioned weak point, and motor stator is fixed in the electric bicycle five-way hole, and sprocket wheel is fixed on the shell of motor, can the external mechanical speed change.Because electric machine structure of the present invention is simple, compactness, volume is little, and is in light weight, transmission efficiency is high, and manpower and electric power can be jointly or driving separately respectively, do not influence mutually.The energy of consumption in service in the parts friction is less, and the transmission of power is more complete, and climbing capacity is strong, and it is comfortable, more stable to ride.
The integrated mid-motor of electric bicycle motor wheel disc takes following technical scheme to realize: the integrated mid-motor of electric bicycle motor wheel disc comprises left side silk bowl, bearing one, motor axis, screw one, motor inner end cap, stator silicon steel sheet (stator punching), bearing two, the stator inner core, bearing three, one-way clutch one, internal gear, planet carrier, bearing four, sprocket wheel (chain wheel), one-way clutch two, screw two, bearing five, right locking nut, inner gear shaft, planetary gear, motor outer end cap, magnet steel and sprocket wheel retainer ring.
The inner gear shaft left end is provided with bearing three installing holes, the inner gear shaft right-hand member is provided with retaining thread, the clutch installation step, inner gear shaft is provided with through hole, be used for installing the motor axis, bearing three is installed in inner gear shaft left end bearing three installing holes, one-way clutch one is fixed on the clutch installation step of inner gear shaft, the internal gear left side is provided with the clutch installing hole, the internal gear right side is provided with ring gear, internal gear is fixed on the one-way clutch one, the right-hand member that three planetary planet carriers are installed in internal gear is housed, and above-mentioned parts are assembled into gear.
The planet carrier outer ring is provided with positioning boss, stator inner core left side is provided with bearing two installing holes, the right side is provided with gear inner chamber is installed, stator inner core right-hand member is provided with detent, the stator inner core is provided with wire hole, gear is installed in stator inner core right side gear and installs in the inner chamber, the planet carrier positioning boss matches with the detent of stator inner core, right locking nut is installed on the external screw thread of stator inner core left side, bearing two is installed in bearing two installing holes of stator inner core left side, the stator inner core that change-speed gearing is installed is installed in the stator silicon steel sheet (stator punching), on the stator silicon steel sheet (stator punching) stator winding is installed, the stator winding power line is drawn by the wire hole of stator inner core.Motor inner end cap left end is provided with bearing five installing hole 6-1, and motor inner end cap periphery is provided with installing hole, and bearing five is installed in motor inner end cap left end bearing five installing holes.Stator inner core, the stator silicon steel sheet that gear is installed is that stator punching, motor winding constitute stator, stator is by bearing five and motor inner end cap close-fitting, silk bowl right side, a left side is provided with bearing one installing hole, and bearing one is installed in bearing one installing hole of silk bowl right side, a left side.Motor outer end cap left side is provided with sun gear, and magnet steel is mounted on motor outer end cap inwall, and motor outer end cap right side is provided with bearing four installing holes, and bearing four is installed in bearing four installing holes of motor outer end cap right side, and motor outer end cap periphery is provided with the installation screw.Sprocket wheel retainer ring left side is provided with bearing four positioning steps, sprocket wheel retainer ring right side outer periphery is equipped with fixedly step of sprocket wheel (chain wheel), be provided with clutch two installing holes in the right side, sprocket wheel retainer ring middle part is provided with the retaining thread hole and inner gear shaft is fastening by retaining thread, the sprocket wheel retainer ring is installed in motor outer end cap right side by bearing four tight fits, sprocket wheel (chain wheel) is fastening by screw three and sprocket wheel retainer ring, clutch two is installed in sprocket wheel fixture right side clutch two installing holes, the external screw thread that the inner end cap of stator inner core stretches out by the stator inner core is housed to be fixed in the internal thread on frame five-through right side, fastening by right locking nut, the left side silk bowl that bearing one is housed is installed in the internal thread of frame five-through left side, the motor axis passes left side silk bowl successively, the stator inner core, the motor outer end cap stretches out sprocket wheel retainer ring right side by jump ring chucking location, and sprocket wheel (chain wheel) is housed, clutch two, the sprocket wheel retainer ring, the motor outer end cap of bearing four is fastening by screw one and motor inner end cap.
Operation principle:
When installing and using, stator inner core 9 male end are installed in frame five-through 4 female end and pass through screw threads for fastening.Sprocket wheel (chain wheel) 15 links to each other with flying wheel behind the electric motor car by chain, and foot-operated, crank 34 is installed in motor axis 3 both ends and adopts screw two fixing.
During driven by power, the integrated mid-motor of electric bicycle motor wheel disc rotates by the mid-motor of handle making current, the sun gear of the gear that the motor outer end cap connects drives planetary gear and rotates, planetary gear drives internal gear and rotates, internal gear drives inner gear shaft by clutch one and rotates, inner gear shaft is fixed with the sprocket wheel retainer ring, the sprocket wheel retainer ring is fixed with sprocket wheel (chain wheel), drive the running of electric motor car trailing wheel by sprocket wheel (chain wheel), chain, flywheel, electric motor car to overtake.
Manpower passes through when driving, and the manpower pin is stepped on foot-operated crank, and the motor axis drives the rotor motion by one-way clutch, and sprocket wheel (chain wheel) drives chain, flywheel drives the electric motor car rear wheel movement, and electric motor car to overtake.
During combination drive, upward slope is can manpower to drive and driven by power is carried out simultaneously, makes the electric motor car trailing wheel to overtake under the situation of labour-saving again in power saving.
Built-in variable speed case of the present invention can be realized the conversion of different motor speeds.
The integrated mid-design of electrical motor of electric bicycle internal speed-changing motor wheel disc of the present invention is reasonable, and compact conformation, motor stator are fixed in the electric bicycle five-way hole, and the multi-disc hinge wheel is fixed on the shell of motor, can the external mechanical speed change.Because electric machine structure of the present invention is simple, compactness, volume is little, and is in light weight, transmission efficiency is high, and manpower and electric power can be jointly or driving separately respectively, do not influence mutually.The energy of consumption in service in the parts friction is less, and the transmission of power is more complete, and climbing capacity is strong, and it is comfortable, more stable to ride.
Mid-motor drive mode since its installation site at the middle part of electric motor car, compact conformation is reasonable, with car---robot system center of gravity line position is close, the car load good stability of riding; Because motor is directly carrying not, its power performance is more powerful; Thereby changed the weight that wheel hub in the present wheel hub Drive Structure should be born car body and bicyclist, needed the most unfavorable processing condition of transmission of drive force square again; Because trailing wheel is identical with the ordinary bicycle structure, the maintenance trailing wheel is also convenient.Opposite with the rear-wheel hub formula, rear axle can be installed inside and outside speed changer, and car load is unrestricted for the adaptive capacity of different road conditions, the ability of riding, and can perform to ultimate attainmently, and does not have the front-wheel drive mode to influence the shortcoming of control stability.In addition, because the position between motor and the controller is nearest, make its circuit, joint ohmic loss minimum under big electric current, limited battery power is fully used.
The integrated mid-motor of electric bicycle internal speed-changing motor wheel disc has high efficiency, low noise, high pulling torque, small size, light weight is economized material, highly reliable, the long-life, can decelerate owing to have gear, starting is stable, good climbing is arranged and ride performance, and is energy-conservation, can be in operate as normal under the severe environmental conditions, be easy to install, working service is simple, but built-in controller is realized electromechanical integration, intellectuality, perfect in shape and function, high performance-price ratio.
Description of drawings
The invention will be further described below with reference to accompanying drawing:
Fig. 1 is the integrated mid-electric machine structure schematic diagram of electric bicycle internal speed-changing motor wheel disc.
Fig. 2 is the inner gear shaft schematic diagram of the integrated mid-motor of electric bicycle internal speed-changing motor wheel disc.
Fig. 3 is the motor outer end cap left view of the integrated mid-motor of electric bicycle internal speed-changing motor wheel disc.
Fig. 4 is the motor outer end cap right view of the motor outer end cap of the integrated mid-motor of electric bicycle internal speed-changing motor wheel disc.
Fig. 5 is the motor inner end cap schematic diagram of the integrated mid-motor of electric bicycle internal speed-changing motor wheel disc.
Fig. 6 is the stator inner core left view of the integrated mid-motor of electric bicycle internal speed-changing motor wheel disc.
Fig. 7 is the stator inner core right view of the integrated mid-motor of electric bicycle internal speed-changing motor wheel disc.
Fig. 8 is the view of installing and using of the integrated mid-motor of electric bicycle internal speed-changing motor wheel disc.
Embodiment
With reference to accompanying drawing 1~8, the integrated mid-motor of electric bicycle motor wheel disc comprises left side silk bowl 1, bearing 1, motor axis 3, screw 1, motor inner end cap 6, stator silicon steel sheet (stator punching) 7, bearing 28, stator inner core 9, bearing 3 10, one-way clutch 1, internal gear 12, planet carrier 13, bearing 4 14, sprocket wheel (chain wheel) 15, one-way clutch 2 16, screw 2 17, bearing 5 18, right locking nut 19, inner gear shaft 20, planetary gear 21, motor outer end cap 22, magnet steel 24 and sprocket wheel retainer ring 23.
Inner gear shaft 20 left ends are provided with bearing three installing hole 20-1, inner gear shaft 20 right-hand members are provided with retaining thread 20-4, clutch installation step 20-2, inner gear shaft 20 is provided with through hole 20-3, be used for installing motor axis 3, bearing 3 10 is installed in the inner gear shaft 20 left end bearings three installing hole 20-1, one-way clutch 1 is fixed on the clutch installation step 20-2 of inner gear shaft 20, internal gear 12 left sides are provided with the clutch installing hole, internal gear 12 right sides are provided with ring gear 27, internal gear 12 is fixed on the one-way clutch 1, the planet carrier 13 that three planetary gears 21 are housed is installed in the right-hand member of internal gear 12, and above-mentioned parts are assembled into gear.
Planet carrier 13 outer rings are provided with positioning boss 28, stator inner core 9 left sides are provided with bearing two installing hole 9-1, the right side is provided with gear inner chamber 9-3 is installed, stator inner core 9 right-hand members are provided with detent 9-4, stator inner core 9 is provided with wire hole 9-5, gear is installed in stator inner core 9 right side gears and installs in the inner chamber 9-3, planet carrier positioning boss 28 matches with the detent 9-4 of stator inner core, right locking nut 19 is installed on the stator inner core 9 left side external screw thread 9-2, bearing 28 is installed in the stator inner core 9 left side bearings two installing hole 9-1, the stator inner core 9 that change-speed gearing is installed is installed in the stator silicon steel sheet (stator punching) 7, on the stator silicon steel sheet (stator punching) 7 stator winding 25 is installed, stator winding power line 26 is drawn by the wire hole 9-5 of stator inner core 9.Motor inner end cap 6 left ends are provided with bearing five installing hole 6-1, and motor inner end cap 6 peripheries are provided with installing hole 6-2, and bearing 5 18 is installed in the motor inner end cap 6 left end bearings five installing hole 6-1.Stator inner core 9, the stator silicon steel sheet that gear is installed is that stator punching 7, motor winding constitute stator, stator is by bearing 5 18 and motor inner end cap 6 close-fittings, silk bowl 1 right side, a left side is provided with bearing one 2 installing holes 29, and bearing 1 is installed in silk bowl 1 right side bearing one installing hole 29 of a left side.Motor outer end cap 22 left sides are provided with sun gear 22-1, magnet steel 24 is mounted on motor outer end cap 22 inwalls, motor outer end cap 22 right sides are provided with bearing four installing hole 22-2, bearing 4 14 is installed in the motor outer end cap 22 right side bearings four installing hole 22-2, and motor outer end cap 22 peripheries are provided with installs screw 22-3.Sprocket wheel retainer ring 23 left sides are provided with bearing four positioning steps 30, sprocket wheel retainer ring 23 right side outer periphery are equipped with fixedly step 31 of sprocket wheel (chain wheel), be provided with clutch two installing holes 32 in the right side, sprocket wheel retainer ring 23 middle parts are provided with the retaining thread hole and inner gear shaft 20 is fastening by retaining thread 20-4, sprocket wheel retainer ring 23 is installed in motor outer end cap 22 right sides by bearing 4 14 tight fits, sprocket wheel (chain wheel) 15 is fastening by screw 3 33 and sprocket wheel retainer ring 23, clutch 2 16 is installed in sprocket wheel fixture 23 right side clutch two installing holes 32, the external screw thread 9-2 that the inner end cap 6 of stator inner core 9 stretches out by stator inner core 9 is housed to be fixed in the internal thread on frame five-through 4 right sides, fastening by right locking nut 19, the left side silk bowl 1 that bearing 1 is housed is installed in the frame five-through 4 left side internal threads, motor axis 3 passes left side silk bowl 1 successively, stator inner core 9, motor outer end cap 22 stretches out sprocket wheel retainer ring 23 right sides by jump ring chucking location, and sprocket wheel (chain wheel) 15 is housed, clutch 2 16, sprocket wheel retainer ring 23, the motor outer end cap 22 of bearing 4 14 is fastening by screw 1 and motor inner end cap 6.
Described motor axis 3 two ends are provided with foot-operated crank installation step 35 and fixing threaded hole.
When installing and using, it is fastening by right locking nut 19 that stator inner core 9 external screw thread 9-2 end is installed in frame five-through 4 female end.Sprocket wheel (chain wheel) 15 links to each other with flying wheel behind the electric motor car by chain, and foot-operated, crank 34 is installed in motor axis 3 both ends and adopts screw 2 17 fixing.
During driven by power, the integrated mid-motor of electric bicycle motor wheel disc rotates by the mid-motor of handle making current, the sun gear 22-1 of the gear that motor outer end cap 22 connects drives planetary gear 21 and rotates, planetary gear 21 drives internal gear 12 and rotates, internal gear 12 drives inner gear shaft 20 by clutch 1 and rotates, inner gear shaft 20 is fixed with sprocket wheel retainer ring 23, sprocket wheel retainer ring 23 is fixed with sprocket wheel (chain wheel) the 15th, drive the running of electric motor car trailing wheel by sprocket wheel (chain wheel) 15, chain, flywheel, electric motor car to overtake.
Manpower passes through when driving, and the manpower pin is stepped on foot-operated crank 34, and motor axis 3 drives the rotor motion by one-way clutch, and sprocket wheel (chain wheel) 15 drives chain, flywheel drives the electric motor car rear wheel movement, and electric motor car to overtake.

Claims (6)

1. the integrated mid-motor of electric bicycle motor wheel disc is characterized in that: comprise left side silk bowl, bearing one, motor axis, screw one, motor inner end cap, stator silicon steel sheet, bearing two, the stator inner core, bearing three, one-way clutch one, internal gear, planet carrier, bearing four, sprocket wheel, one-way clutch two, screw two, bearing five, right locking nut, inner gear shaft, planetary gear, motor outer end cap, magnet steel and sprocket wheel retainer ring;
The inner gear shaft left end is provided with bearing three installing holes, the inner gear shaft right-hand member is provided with retaining thread, clutch installation step, inner gear shaft is provided with through hole, be used for installing the motor axis, bearing three is installed in inner gear shaft left end bearing three installing holes, one-way clutch one is fixed on the clutch installation step of inner gear shaft, the internal gear left side is provided with the clutch installing hole, the internal gear right side is provided with ring gear, internal gear is fixed on the one-way clutch one, the right-hand member that three planetary planet carriers are installed in internal gear is housed, is assembled into gear;
The planet carrier outer ring is provided with positioning boss, stator inner core left side is provided with bearing two installing holes, the right side is provided with gear inner chamber is installed, stator inner core right-hand member is provided with detent, the stator inner core is provided with wire hole, gear is installed in stator inner core right side gear and installs in the inner chamber, the planet carrier positioning boss matches with the detent of stator inner core, right locking nut is installed on the external screw thread of stator inner core left side, bearing two is installed in bearing two installing holes of stator inner core left side, the stator inner core that change-speed gearing is installed is installed in the stator silicon steel sheet, on the stator silicon steel sheet stator winding is installed, the stator winding power line is drawn by the wire hole of stator inner core; Motor inner end cap left end is provided with bearing five installing holes, and bearing five is installed in motor inner end cap left end bearing five installing holes; Stator inner core, the stator silicon steel sheet that gear is installed is that stator punching, motor winding constitute stator, stator is by bearing five and motor inner end cap close-fitting, silk bowl right side, a left side is provided with bearing one installing hole, and bearing one is installed in bearing one installing hole of silk bowl right side, a left side;
Motor outer end cap left side is provided with sun gear, and magnet steel is mounted on motor outer end cap inwall, and motor outer end cap right side is provided with bearing four installing holes, and bearing four is installed in bearing four installing holes of motor outer end cap right side; Sprocket wheel retainer ring left side is provided with bearing four positioning steps, sprocket wheel retainer ring right side outer periphery is equipped with fixedly step of sprocket wheel, be provided with clutch two installing holes in the right side, sprocket wheel retainer ring middle part is provided with the retaining thread hole and inner gear shaft is fastening by retaining thread, the sprocket wheel retainer ring is installed in motor outer end cap right side by bearing four tight fits, sprocket wheel is fastening by screw three and sprocket wheel retainer ring, clutch two is installed in sprocket wheel fixture right side clutch two installing holes, the external screw thread that the inner end cap of stator inner core stretches out by the stator inner core is housed to be fixed in the internal thread on frame five-through right side, fastening by right locking nut, the left side silk bowl that bearing one is housed is installed in the internal thread of frame five-through left side, the motor axis passes left side silk bowl successively, the stator inner core, the motor outer end cap stretches out sprocket wheel retainer ring right side by jump ring chucking location, and sprocket wheel is housed, clutch two, the sprocket wheel retainer ring, the motor outer end cap of bearing four is fastening by screw one and motor inner end cap.
2. the integrated mid-motor of electric bicycle motor wheel disc according to claim 1, it is characterized in that: motor inner end cap periphery is provided with installing hole.
3. the integrated mid-motor of electric bicycle motor wheel disc according to claim 1, it is characterized in that: motor outer end cap periphery is provided with the installation screw.
4. the integrated mid-motor of electric bicycle motor wheel disc according to claim 1 is characterized in that: described motor axis two ends are provided with foot-operated crank installation step and fixing threaded hole.
5. the integrated mid-motor of electric bicycle motor wheel disc according to claim 1 is characterized in that: it is fastening by right locking nut (19) that described stator inner core male end is installed in the frame five-through female end.
6. the integrated mid-motor of electric bicycle motor wheel disc according to claim 1, it is characterized in that: described sprocket wheel links to each other with flying wheel behind the electric motor car by chain, and foot-operated, crank is installed in motor axis both ends and adopts screw two fixing.
CN 201110445864 2011-12-27 2011-12-27 Variable speed wheel-disc integrated mid-motor in electrical bicycle Expired - Fee Related CN102420494B (en)

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Application Number Priority Date Filing Date Title
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CN102420494B true CN102420494B (en) 2013-08-21

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