CN204775801U - Rearmounted motor electric bicycle's transmission system assembly - Google Patents
Rearmounted motor electric bicycle's transmission system assembly Download PDFInfo
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- CN204775801U CN204775801U CN201520380749.3U CN201520380749U CN204775801U CN 204775801 U CN204775801 U CN 204775801U CN 201520380749 U CN201520380749 U CN 201520380749U CN 204775801 U CN204775801 U CN 204775801U
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- bevel gear
- differential
- connector
- driven wheel
- ratchet
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Abstract
The utility model discloses a rearmounted motor electric bicycle's transmission system assembly, rear wheel drive motor install on the rear wheel back shaft, are equipped with outside extension on the end cover of rear wheel drive motor, and the cover is equipped with the connector on the outside extension, is equipped with first bearing between connector and the rear wheel back shaft, and the connector is equipped with ladder through -hole, the big footpath section of connector and the outside extension screw -thread fit of rear wheel drive motor, the lateral wall of connector distributes along circumference and has detent spring and pawl, and the driven bevel gear in an outside screw -thread fit back of ratchet, ratchet is installed to the lateral wall of connector through the second bearing, the driven bevel gear in back passes through transmission shaft combination and links to each other with the axis, and driven bevel gear passes through during the fourth bearing installs in the front the box before the transmission shaft combination, driven bevel gear initiative bevel gear meshing before epaxial in with before the transmission shaft, transmission shaft's back initiative bevel gear and back driven bevel gear meshing. The utility model discloses simple structure, high transmission efficiency, transmission stability are good, characteristics such as small in noise.
Description
Technical field
The utility model relates to bicycle, is specifically related to a kind of driving system assembly of rear motor Electrical Bicycle.
Background technology
Along with the development of society, bicycles increases is looked at by the parent of consumers in general, becomes the instrument of leisure, body-building, but due to bicycle running finite rate, when people run into urgent thing, cannot arrive destination fast, convenient and practical not; And bicycle cannot be ridden in mountain area and intersected country, cause a lot of city cannot implement public bicycles system on a large scale.Therefore utility model Electrical Bicycle, although Electrical Bicycle improves relative to bicycle moving velocity, but the type of drive of existing Electrical Bicycle still adopts sprocket wheel chain gear, although this drive mechanism is provided with chain baffle plate, but still belong to open-drive configuration, the trouser legs of bicyclist or shirt rim are easy to be wound around by chain or sprocket wheel or break by the teeth, even cause bicyclist to fall down and cause property or personal injury.Meanwhile, after speed improves, chain easy telomere or come off in use for some time, needs again to safeguard or install, brings many worries to bicyclist.In recent years market occurred that transmitter shaft replaced the driving system of chain gear, but also there is following problem:
1. the flower-drum owing to using is special, and common flower-drum can not be general, and the parts of employing are too much, cause, when producing and safeguarding, needing to use a large amount of instrument, bring unnecessary economy expenditure to customer, during after-sales service simultaneously, the work capacity of maintainer is large.
2. the pillar of transmitter shaft combination adopts interference fit or screw to be connected with between front protecting cover, rear protecting cover, owing to there is gap between screw thread, in the situation of jolting of vehicle long-play and different road conditions, easy generation loosens or comes off, even damage, transmission efficiency is reduced and even cannot ride.
3. with bolts between transmitter shaft and front driven tooth, rear driving tooth, then be interconnected by bearing and front protecting cover, rear protecting cover, because transmitter shaft during assembling lacks endplay relative between front protecting cover, rear protecting cover, make each parts and front protecting cover, rear protecting cover accuracy of manufacture higher, financial cost is high.Also some producers are had at present, connect effective length by assembly technology and bolt to control, though installation effect can be reached, but inefficiency, be not suitable for batch jobs, in the situation of jolting of vehicle long-play and different road conditions, front protecting cover, rear protecting cover is easily subjected to displacement, loosen and perhaps come off, even damage, due to transmitter shaft and front driven tooth, with bolts between rear driving tooth, lack endplay, bearing space is occupied, the lighter rides difficulty, severe one causes bearing or bolts at two ends to damage, affect service life and personal safety, unnecessary trouble is brought to customer.
Therefore existing Electrical Bicycle poor stability, the problem such as propulsive effort is poor, grade climbing performance is not good, transmitter shaft needs to coordinate special flower-drum, causes financial cost to increase.And the pawl structures in shaft transmission system designs unreasonable, easily occurs the situation that pawl structures lost efficacy, causes realizing electric bicycle pedal and electronic freely changing, very dangerous.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, there is provided a kind of driving system assembly of rear motor Electrical Bicycle, good stability, propulsive effort is strong, there will not be the situation that ratchet structure lost efficacy, electric bicycle pedal can be realized and electronic between freely change.
The purpose of this utility model can be achieved through the following technical solutions.
A kind of driving system assembly of rear motor Electrical Bicycle, comprise back-wheel drive motor, described back-wheel drive motor is arranged on Rear wheel support axle, the shell of back-wheel drive motor is rotor, described Rear wheel support axle is motor shaft, it is characterized in that: the end cap of described back-wheel drive motor is provided with outwardly extending portion, outwardly extending portion is provided with outside thread, Rear wheel support axle is through outwardly extending portion, the aperture of described outwardly extending portion is greater than Rear wheel support axle external diameter, described outwardly extending portion is arranged with connector, clutch shaft bearing is provided with between connector and Rear wheel support axle, described connector is provided with ladder hole, the large footpath section of described connector and the outwardly extending portion screw thread fit of back-wheel drive motor, the path section of connector coordinates with Rear wheel support shaft clearance, the lateral wall of described connector is circumferentially distributed with click spring and ratchet, the lateral wall of connector is provided with ratchet by the second bearing, described second bearing is provided with fixed cap, described fixed cap screw thread is engaged on ratchet, driven wheel of differential after described ratchet outer sheathed, ratchet and rear driven wheel of differential screw thread fit, described rear driven wheel of differential is connected with axis by transmitter shaft combination, casing before described axis is provided with by the 5th bearing, and the front drive bevel gear in front casing is solidly set on axis, described transmitter shaft combination comprises transmitter shaft, be set in the pillar outside transmitter shaft, and be solidly set on the front driven wheel of differential at transmitter shaft two ends and rear drive bevel gear, be arranged on front casing from mantle tooth by the 4th bearing before described, the front driven wheel of differential of transmitter shaft engages with the front drive bevel gear on axis, the rear drive bevel gear of transmitter shaft engages with rear driven wheel of differential, described rear drive bevel gear is arranged in rear box by the 3rd bearing, described rear box is provided with the connecting portion for being arranged on Rear wheel support axle, described connecting portion is provided with the opening passed for Rear wheel support axle.
Be provided with setting nut inside the connecting portion of described rear box and between connector, be provided with cover of dust outside the connecting portion of described rear box, Rear wheel support axle is provided with the motor locking nut for locking cover of dust, is provided with packing ring between motor locking nut and cover of dust.
The lateral wall of described connector is provided with multi-stage stairs, and middle part circumferentially ratchet and the click spring of described connector outer wall, described second bearing is arranged on the step of connector.
The outside of described ratchet is provided with and stretches out, for locating the flange of rear driven wheel of differential.
Described front casing is arranged in the frame five-through of Electrical Bicycle, is provided with voussoir between the lateral wall of front casing and frame five-through, and front casing is provided with the jam nut for locking wedge block, is provided with cushion between described jam nut and voussoir.
Described front casing is provided with the sensor for checking moment, speed.
The two ends of described pillar are welded with front protecting cover and rear protecting cover respectively, and described front protecting cover is connected by bolt with front casing, and rear protecting cover is connected by bolt with rear box.
Ladder hole is provided with in described rear drive bevel gear, the small-bore section of rear drive bevel gear and transmitter shaft spline fitted, be provided with spring, packing ring and lock bolt in the large aperture section of rear drive bevel gear, rear drive bevel gear and transmitter shaft are fixed by spring, lock bolt and washer locking; Be provided with ladder hole in described front driven wheel of differential, the path section of front driven wheel of differential and transmitter shaft spline fitted, the large footpath section of front driven wheel of differential is provided with lock bolt and packing ring, and front driven wheel of differential and transmitter shaft are fixed by lock bolt and washer locking.
The rear drive bevel gear end of described transmitter shaft combination is provided with the first seal ring, and described first seal ring is between transmitter shaft and pillar; The front driven wheel of differential end of described transmitter shaft combination is provided with the second seal ring, and described second seal ring is between the 4th bearing and front casing.
The modulus of described front drive bevel gear, rear driven wheel of differential, front driven wheel of differential and rear drive bevel gear is 2.5, and the overall gear ratio between them is: 1:0.51.
The beneficial effects of the utility model; The end cap of back-wheel drive motor of the present utility model is provided with to extension, outwardly extending portion is arranged with connector, the diameter of outwardly extending portion is greater than Rear wheel support axle external diameter, the large footpath section of connector and outwardly extending portion screw thread fit, increase the end cap of back-wheel drive motor and the area of contact of connector, make the connection of connector and end cap more firm.Clutch shaft bearing is provided with between connector and Rear wheel support axle, the lateral wall of connector is circumferentially distributed with click spring and ratchet, the lateral wall of connector is provided with ratchet by the second bearing, the outside screw of ratchet coordinates a rear driven wheel of differential, to be matched with ratchet the one-way intermittent motion mechanism formed by click spring, ratchet, achieve rear driven wheel of differential and freely connecting and being separated between connector.Rear driven wheel of differential is connected with axis by transmitter shaft combination, casing before axis is provided with by the 5th bearing, and the front drive bevel gear in front casing is solidly set on axis; The front driven wheel of differential of transmitter shaft combination is arranged in front casing by the 4th bearing, the front driven wheel of differential of transmitter shaft combination engages with the front drive bevel gear on axis, rear drive bevel gear is arranged in rear box by the 3rd bearing, the rear drive bevel gear of transmitter shaft combination engages with rear driven wheel of differential, this stable connection, transmission is more steady, ratchet structure is prevented to occur the situation about coordinating that lost efficacy, the power of the stretcher generation of the two ends installation of axis, is delivered on Rear wheel support axle by transmitter shaft combination, rear driven wheel of differential fast and efficiently; During back-wheel drive machine operation, rear driven wheel of differential is separated with connector, prevents the difficulty of riding reducing bicyclist.Described rear box is provided with the connecting portion for being arranged on Rear wheel support axle, and described connecting portion is provided with the opening passed for Rear wheel support axle, ensure that rear drive bevel gear engages with rear driven wheel of differential actv., is supported by rear box to Rear wheel support axle; Described second bearing is provided with fixed cap, and described fixed cap screw thread is engaged on ratchet, prevents dust or other materials from falling into ratchet, thus avoid the impact on ratchet device by fixed cap.
Further: inside the connecting portion of described rear box and between connector, be provided with setting nut, cover of dust is provided with outside the connecting portion of described rear box, Rear wheel support axle is provided with the motor locking nut for locking cover of dust, is provided with packing ring between motor locking nut and cover of dust.Avoided between the connecting portion of rear box and connector by setting nut and influence each other.This cover of dust seals further to whole rear driven wheel of differential and ratchet device, improves the normal operation of driven wheel of differential and ratchet device.
Further: described ratchet is also provided with and stretches out, for locating the flange of rear driven wheel of differential, by flange, axial location being carried out to rear driven wheel of differential.
Further: the two ends of described pillar are welded with front protecting cover and rear protecting cover respectively, and front protecting cover is connected by bolt with front casing, and rear protecting cover is connected by bolt with rear box.Improve pillar and being fixedly connected with between front protecting cover and rear protecting cover, avoid front drive bevel gear, front driven wheel of differential and rear drive bevel gear contaminated, reduce frequency of maintenance, reduce cost.
Further: described front casing is arranged in the frame five-through of Electrical Bicycle, voussoir is provided with between the lateral wall of front casing and frame five-through, front casing is provided with the jam nut for locking wedge block, be provided with cushion between described jam nut and voussoir, be convenient to that front casing is stable to be arranged in frame five-through.
Further: front casing is provided with the sensor for checking moment, speed.Detected in real time by sensor, and be sent to the control system of Electrical Bicycle, regulated the horsepower output of back-wheel drive motor by control system, thus improve the comfort level of riding.
Further: the small-bore section of rear drive bevel gear and transmitter shaft spline fitted, be provided with spring, packing ring and lock bolt in the large aperture section of rear drive bevel gear, rear drive bevel gear and transmitter shaft are fixed by spring, lock bolt and washer locking; The path section of described front driven wheel of differential and transmitter shaft spline fitted, the large footpath section of front driven wheel of differential is provided with lock bolt and packing ring, and front driven wheel of differential and transmitter shaft are fixed by lock bolt and washer locking.Leave endplay, ensure that and the normal operation that transmitter shaft combines improve transmission efficiency, reduce transmitter shaft and between front driven wheel of differential and rear drive bevel gear loosen, damage.
Further: the rear drive bevel gear end of described transmitter shaft combination is provided with the first seal ring, and described first seal ring is between transmitter shaft and pillar; The front driven wheel of differential end of described transmitter shaft combination is provided with the second seal ring, and described second seal ring is between the 4th bearing and front casing.Carry out oil sealing by first, second seal ring, ensure that the normal work of transmitter shaft.
Further: the modulus of described front drive bevel gear, rear driven wheel of differential, front driven wheel of differential and rear drive bevel gear is 2.5, and the overall gear ratio between them is: 1:0.51.Adopt above modulus and transmitting ratio, make the transmission of this driving system under the prerequisite meeting relevant criterion, there is the features such as driving efficiency is high, transmission stability is good, make to ride more laborsaving.
The utility model is according to the characteristic of ratchet structure, and axis can provide unidirectional power transmission to the shell of back-wheel drive motor, can not affect the shell of back-wheel drive motor when axis reverses; Meanwhile, can not to middle shaft rotation when back-wheel drive motor normally rotates, this structure is very simple, can meet the transmission demand of Electrical Bicycle.The mounting structure of rear driven wheel of differential and connector, because the step outside connector and jam nut have all carried out the spacing of dextrad to rear driven wheel of differential, ratchet and the second bearing, back-up ring carries out the spacing of left-hand to the second bearing; Ratchet and the second bearing interference fit, back-up ring also carries out the spacing of left-hand to ratchet; The mode be threaded connection because of rear driven wheel of differential is again fixed on ratchet, and rear driven wheel of differential left and right displacement is also limited, so the ratchet structure between ratchet and connector is stable, can not lose efficacy.Driven wheel of differential position stability simultaneously, ensure that the assembly precision between rear driven wheel of differential and rear drive bevel gear, improves driving efficiency, reduce the noise in transmission process.Therefore the utility model has structure simply, and the features such as driving efficiency is high, transmission stability is high, and noise is little, there will not be the situation that gears meshing is bad in operational process, and the situation that effectively prevent ratchet device inefficacy occurs.The utility model Electrical Bicycle solves in mountain area, intersected country cannot the difficult problem of riding bicycle, is conducive to the popularization of public bicycles, can reaches the requirement of global energy-saving and emission-reduction green traffic health trip.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is lateral plan of the present utility model;
Fig. 3 is the assembling schematic diagram of rear driven wheel of differential and connector;
Fig. 4 is the structural representation of ratchet, click spring and ratchet;
Fig. 5 is the structural representation of transmitter shaft combination.
In accompanying drawing: 1 is back-wheel drive motor, 1-1 is outwardly extending portion, 2 is Rear wheel support axle, 3 is connector, 4 is clutch shaft bearing, 5 is rear driven wheel of differential, 6 is ratchet, 7 is ratchet, 8 is the second bearing, 9 is fixed cap, 10 is setting nut, 11 is cover of dust, 12 is packing ring, 13 is motor locking nut, 14 is back-up ring, 15 is rear box, 15-1 is connecting portion, 15-2 is opening, 15-3 is for connecting journal stirrup, 16 is rear protecting cover, 17 is the first seal ring, 18 is the 3rd bearing, 19 is pillar, 20 is transmitter shaft, 21 is front protecting cover, 22 is the 4th bearing, 23 is front casing, 23-1 is front case lid, 24 is front drive bevel gear, 25 is axis, 26 is frame five-through, 27 is jam nut, 28 is the magnetic sheet of sensor, 29 is click spring, 30 is the inductive head of sensor, 31 is cushion, 32 is locking wedge block, 33 is the second seal ring, 34 is front driven wheel of differential, 35 is left chain stay, 36 is auricle, 37 is the 5th bearing, 38 is rear drive bevel gear, 39 is wire, 40 is S molded line card, 41 is lock bolt, 42 is packing ring, 43 is spring.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
See shown in Fig. 1 to Fig. 5, a kind of driving system assembly of rear motor Electrical Bicycle, comprise back-wheel drive motor 1, Rear wheel support axle 2, transmitter shaft combination and axis 25, one end of described Rear wheel support axle 2 is provided with auricle 36, auricle 36 is fastening by jam nut, Rear wheel support axle 2 is fixed on the one end on the left chain stay 35 of electric bicycle fame by auricle, and described lower-left chain stay 35 other end is fixed on frame five-through 26.Described back-wheel drive motor 1 is arranged on Rear wheel support axle 2, described Rear wheel support axle 2 is motor shaft, back-wheel drive motor 1 is connected with the singlechip controller on Electrical Bicycle, and the shell of back-wheel drive motor is rotor, and rotor forms the wheel hub of Electrical Bicycle.The end cap of described back-wheel drive motor is provided with outwardly extending portion 1-1, outwardly extending portion 1-1 is provided with outside thread, Rear wheel support axle 2 is through outwardly extending portion 1-1, the aperture of described outwardly extending portion 1-1 is greater than Rear wheel support axle 2 external diameter, described outwardly extending portion 1-1 is arranged with connector 3, described connector 3 is provided with at least three grades of ladder holes, and the lateral wall of connector 3 is provided with at least three grades of steps.Three grades of ladder holes are provided with in connector in the present embodiment, the lateral wall of connector is provided with level Four step, the external diameter of first order step is minimum, the external diameter of fourth stage step is maximum, the large footpath section of described connector 3 is provided with negative thread, close with the outwardly extending portion screw thread of back-wheel drive motor 1 inside the large aperture section of described connector 3, be provided with clutch shaft bearing 4 between the second ladder through-hole wall of connector 3 and Rear wheel support axle 2, clutch shaft bearing 4 is undertaken spacing by the second ladder hole of connector 3, the small-bore section of connector 3 and Rear wheel support axle 2 free-running fit, second stage step outside described connector 3 is circumferentially distributed with multiple pawl slot, ratchet 6 is provided with in described pawl slot, three ratchets 6 are adopted in the present embodiment, click spring groove is equipped with outside connector 3 He on ratchet 6, in described click spring groove, click spring 29 is installed, first order step outside connector 3 is provided with ratchet 7 by the second bearing 8, ratchet 6, click spring and ratchet 7 form ratchet device, ratchet 7 is interference fitted on the second bearing 8, the minimum inscribe circle diameter of ratchet 7 is less than the external diameter of described second bearing 8, described connector 3 is provided with the back-up ring 14 moved axially for limiting the second bearing 8.The lateral wall of described ratchet 7 is provided with outside thread, driven wheel of differential 5 after described ratchet 7 outer sheathed, ratchet 7 and rear driven wheel of differential 5 screw thread fit.Described ratchet 7 is also provided with and stretches out, for locating the flange of rear driven wheel of differential, the internal diameter of described flange is less than the external diameter of connector 3 third stage step, well can play the situation preventing ratchet 7 and rear driven wheel of differential 5 from loosening, prevent ratchet structure to lose efficacy further.Described connector 3 the 4th step is used for stepping down for rear driven wheel of differential 5, described second bearing 8 is provided with fixed cap 9, described fixed cap 9 is provided with through hole, the aperture of described through hole is less than the external diameter of described second bearing 8, described fixed cap 9 screw thread fit is on the lateral wall of ratchet 7, and the end of fixed cap 9 pushes against rear driven wheel of differential 5.
Described rear driven wheel of differential 5 is connected with axis 25 by transmitter shaft combination.Casing 23 before described axis 25 is provided with one, front casing 23 is provided with the front case lid 23-1 matched, front casing 23 and front case lid 23-1 are equipped with the mounting hole of axis 25, axis 25 is arranged on front casing 23 and front case lid 23-1 respectively by two the 5th bearings 37, the front drive bevel gear 24 of front casing 23 passes through screw thread fixed cover on axis 25, the two ends of axis 25 are respectively used to installation foot pedal, described front casing 23 is arranged in the frame five-through 26 of electric bicycle fame, voussoir 32 is provided with between the lateral wall of front casing 23 and frame five-through 26, front casing 23 is provided with the jam nut 27 for locking wedge block 32, cushion 31 is provided with between described jam nut 27 and voussoir 32, make stable being fixed in frame five-through 26 of front casing 23.
Described transmitter shaft combination comprises transmitter shaft 20, be set in the pillar 19 outside transmitter shaft, front driven wheel of differential 34 and rear drive bevel gear 38, the two ends of described transmitter shaft 20 are respectively equipped with male splines and internal thread hole, in mantle tooth 34, ladder hole is provided with before described, before be provided with female splines from the path section of mantle tooth 34, the front path section from mantle tooth 34 and transmitter shaft 20 spline fitted, the large footpath section of front driven wheel of differential 34 is provided with lock bolt 41 and packing ring 42, and front driven wheel of differential 34 and transmitter shaft 20 are locked by lock bolt 41 and packing ring 42.Described front driven wheel of differential 34 is arranged in front casing 23 by the 4th bearing 22, and the front driven wheel of differential 34 of transmitter shaft 20 is meshed with the front drive bevel gear 24 on axis 25.The front driven wheel of differential end of described transmitter shaft 20 is provided with the second seal ring 33, and described second seal ring 33 is between the 4th bearing 22 and front casing 23.Ladder hole is provided with in described rear drive bevel gear 38, the small-bore section of rear drive bevel gear 38 is provided with female splines, the small-bore section of rear drive bevel gear 38 and transmitter shaft 20 spline fitted, spring 43, packing ring 42 and lock bolt 41 is provided with in the large aperture section of rear drive bevel gear 38, described spring 43 one end is against in the section of small-bore, the other end is against on packing ring 42, lock bolt 41 retaining washer, and rear drive bevel gear 38 is fixedly connected with transmitter shaft 20; The rear drive bevel gear end of described transmitter shaft combination is provided with the first seal ring 17, and described first seal ring 17 is between transmitter shaft 20 and pillar 19.Described rear drive bevel gear 38 is arranged in rear box 15 by the 3rd bearing 18, and the rear drive bevel gear 38 of transmitter shaft 20 is meshed with rear driven wheel of differential 5.The two ends of described pillar 19 are welded with front protecting cover 21 and rear protecting cover 16 respectively, welding improves pillar 19 and the Joint strenght between front protecting cover 21 and rear protecting cover 16, described transmitter shaft 20 two ends are stretched in front casing 23 and rear box 15 respectively, front protecting cover 21 is connected by bolt with front casing 23, rear protecting cover 16 is connected by bolt with rear box 15, transmitter shaft is connected more firm, has ensured the normal work of transmitter shaft 20.The lateral wall of described pillar 19 is welded with multiple S molded line card 40, the wire 39 of described back-wheel drive motor 1 is fixed on pillar 19 by multiple S molded line card 40, prevent wire 39 to drop when Electrical Bicycle works, affect the normal work of Electrical Bicycle and attractive in appearance.
Described rear box 15 is provided with the connecting portion 15-1 for being arranged on Rear wheel support axle 2, described connecting portion is provided with the opening 15-2 passed for Rear wheel support axle, this opening 15-2 down, the other end of described Rear wheel support axle 2 is connected with rear box 15, improve efficiency of assembling and reliability, save maintenance time.Rear box 15 is arranged on the connection side of Rear wheel support axle 2, and the connecting portion 15-1 of rear box 15 is provided with and connects journal stirrup 15-3, and described connection journal stirrup 15-3 is provided with multiple connecting bore, and rear box 15 is fixed on vehicle frame by connecting journal stirrup 15-3.Setting nut 10 is provided with inside the connecting portion 51-1 of described rear box 15 and between connector 3, cover of dust 11 is provided with outside the connecting portion 15-1 of described rear box 15, Rear wheel support axle 2 is provided with the motor locking nut 13 for locking cover of dust 11, is provided with packing ring 12 between motor locking nut 13 and cover of dust 11.
Described front drive bevel gear 24, front driven wheel of differential wheel 34, rear drive bevel gear 38 and rear driven wheel of differential 5 are spiral bevel.Because spiral bevel has the features such as overlap coefficient is large, load-carrying capacity is strong, transmitting ratio is high, stable drive, noise are little, the utility model is had features such as overlap coefficient is large, load-carrying capacity is strong, transmitting ratio is high, stable drive, noise are little.The modulus of described front drive bevel gear 24, rear driven wheel of differential 5, front driven wheel of differential 34 and rear drive bevel gear 38 is 2.5, and the overall gear ratio between them is: 1:0.51.
Further: front casing 23 is provided with the sensor for checking moment, speed.The inductive head 30 of described sensor is bolted on front casing 23, and the magnetic sheet 28 of sensor is fixed on axis 25.Described for checking moment, the sensor of speed is connected with the singlechip controller on Electrical Bicycle, this sensor is torque sensor, torque sensor gathers moment, by calculating the speed of Electrical Bicycle, to be ridden the moment information of people in foot-operated ride be sent to singlechip controller by torque sensor collection, the subjective desire of people's desired speed speed of riding and automatic governing speed is different from according to road conditions, when riding speed is fast, power of motor can be turned down, instead when riding speed is slow, power of motor can improve, finally by the horsepower output of singlechip controller Intelligent adjustment Electrical Bicycle back-wheel drive motor, make it to reach export with the people that rides to scrunch power proportional, thus improve the comfort of bicyclist.
Working process of the present utility model:
Situation one, when middle shaft rotation, successively by front drive bevel gear, front driven wheel of differential, transmitter shaft, rear drive bevel gear, rear driven wheel of differential transmission, thus makes rear driven wheel of differential rotate.Because rear driven wheel of differential and ratchet are threaded connection, so ratchet is also in rotation, ratchet drives connector to rotate by ratchet, finally makes the shell of back-wheel drive motor rotate.
Situation two, similar with situation one, when axis contrarotation, ratchet can be transferred to make ratchet contrarotation, now cannot form transmission between ratchet and pawl to coordinate, so can not have an impact to connector when axis contrarotation, namely can not have an impact to the shell of back-wheel drive motor when axis contrarotation.
Situation three, when the shell of back-wheel drive motor normally rotates, connector synchronous rotary, now cannot form transmission and coordinate, can not have an impact so the shell of back-wheel drive motor rotates to ratchet between ratchet and pawl.
Wherein situation three can with situation together time run, situation three can be run with situation two simultaneously.
Claims (10)
1. the driving system assembly of a rear motor Electrical Bicycle, comprise back-wheel drive motor, described back-wheel drive motor is arranged on Rear wheel support axle, the shell of back-wheel drive motor is rotor, described Rear wheel support axle is motor shaft, it is characterized in that: the end cap of described back-wheel drive motor is provided with outwardly extending portion, outwardly extending portion is provided with outside thread, Rear wheel support axle is through outwardly extending portion, the aperture of described outwardly extending portion is greater than Rear wheel support axle external diameter, described outwardly extending portion is arranged with connector, clutch shaft bearing is provided with between connector and Rear wheel support axle, described connector is provided with ladder hole, the large footpath section of described connector and the outwardly extending portion screw thread fit of back-wheel drive motor, the path section of connector coordinates with Rear wheel support shaft clearance, the lateral wall of described connector is circumferentially distributed with click spring and ratchet, the lateral wall of connector is provided with ratchet by the second bearing, described second bearing is provided with fixed cap, described fixed cap screw thread is engaged on ratchet, driven wheel of differential after described ratchet outer sheathed, ratchet and rear driven wheel of differential screw thread fit, described rear driven wheel of differential is connected with axis by transmitter shaft combination, casing before described axis is provided with by the 5th bearing, and the front drive bevel gear in front casing is solidly set on axis, described transmitter shaft combination comprises transmitter shaft, be set in the pillar outside transmitter shaft, and be solidly set on the front driven wheel of differential at transmitter shaft two ends and rear drive bevel gear, described front driven wheel of differential is arranged in front casing by the 4th bearing, the front driven wheel of differential of transmitter shaft engages with the front drive bevel gear on axis, the rear drive bevel gear of transmitter shaft engages with rear driven wheel of differential, described rear drive bevel gear is arranged in rear box by the 3rd bearing, described rear box is provided with the connecting portion for being arranged on Rear wheel support axle, described connecting portion is provided with the opening passed for Rear wheel support axle.
2. the driving system assembly of rear motor Electrical Bicycle according to claim 1, it is characterized in that: inside the connecting portion of described rear box and between connector, be provided with setting nut, cover of dust is provided with outside the connecting portion of described rear box, Rear wheel support axle is provided with the motor locking nut for locking cover of dust, is provided with packing ring between motor locking nut and cover of dust.
3. the driving system assembly of rear motor Electrical Bicycle according to claim 1 and 2, it is characterized in that: the lateral wall of described connector is provided with multi-stage stairs, middle part circumferentially ratchet and the click spring of described connector outer wall, described second bearing is arranged on the step of connector.
4. the driving system assembly of rear motor Electrical Bicycle according to claim 1, is characterized in that: the outside of described ratchet is provided with and stretches out, for locating the flange of rear driven wheel of differential.
5. the driving system assembly of rear motor Electrical Bicycle according to claim 1, it is characterized in that: described front casing is arranged in the frame five-through of Electrical Bicycle, voussoir is provided with between the lateral wall of front casing and frame five-through, front casing is provided with the jam nut for locking wedge block, is provided with cushion between described jam nut and voussoir.
6. the driving system assembly of rear motor Electrical Bicycle according to claim 1 or 5, is characterized in that: described front casing is provided with the sensor for checking moment, speed.
7. the driving system assembly of rear motor Electrical Bicycle according to claim 1, it is characterized in that: the two ends of described pillar are welded with front protecting cover and rear protecting cover respectively, described front protecting cover is connected by bolt with front casing, and rear protecting cover is connected by bolt with rear box.
8. the driving system assembly of rear motor Electrical Bicycle according to claim 1, it is characterized in that: in described rear drive bevel gear, be provided with ladder hole, the small-bore section of rear drive bevel gear and transmitter shaft spline fitted, be provided with spring, packing ring and lock bolt in the large aperture section of rear drive bevel gear, rear drive bevel gear and transmitter shaft are fixed by spring, lock bolt and washer locking; Be provided with ladder hole in described front driven wheel of differential, the path section of front driven wheel of differential and transmitter shaft spline fitted, the large footpath section of front driven wheel of differential is provided with lock bolt and packing ring, and front driven wheel of differential and transmitter shaft are fixed by lock bolt and washer locking.
9. the driving system assembly of the rear motor Electrical Bicycle according to claim 1 or 8, is characterized in that: the rear drive bevel gear end of described transmitter shaft combination is provided with the first seal ring, and described first seal ring is between transmitter shaft and pillar; The front driven wheel of differential end of described transmitter shaft combination is provided with the second seal ring, and described second seal ring is between the 4th bearing and front casing.
10. the driving system assembly of rear motor Electrical Bicycle according to claim 1, it is characterized in that: the modulus of described front drive bevel gear, rear driven wheel of differential, front driven wheel of differential and rear drive bevel gear is 2.5, and the overall gear ratio between them is: 1:0.51.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520380749.3U CN204775801U (en) | 2015-06-05 | 2015-06-05 | Rearmounted motor electric bicycle's transmission system assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520380749.3U CN204775801U (en) | 2015-06-05 | 2015-06-05 | Rearmounted motor electric bicycle's transmission system assembly |
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| Publication Number | Publication Date |
|---|---|
| CN204775801U true CN204775801U (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520380749.3U Withdrawn - After Issue CN204775801U (en) | 2015-06-05 | 2015-06-05 | Rearmounted motor electric bicycle's transmission system assembly |
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| Country | Link |
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| CN (1) | CN204775801U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104859782A (en) * | 2015-06-05 | 2015-08-26 | 宋兴辉 | Drive system assembly of electric bicycle with rear motor |
| EP3738869A1 (en) * | 2019-05-17 | 2020-11-18 | G-Force Inc | Transmission shaft system of electric bicycle |
-
2015
- 2015-06-05 CN CN201520380749.3U patent/CN204775801U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104859782A (en) * | 2015-06-05 | 2015-08-26 | 宋兴辉 | Drive system assembly of electric bicycle with rear motor |
| CN104859782B (en) * | 2015-06-05 | 2018-05-22 | 四川新动脉汽车零部件制造有限公司 | The transmission system assembly of rear motor electric bicycle |
| EP3738869A1 (en) * | 2019-05-17 | 2020-11-18 | G-Force Inc | Transmission shaft system of electric bicycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160811 Address after: The two South Industrial Park Economic Development Zone 638500 Guang'an city of Sichuan province Linshui County Patentee after: Sichuan Xindongmai Auto Parts Manufacturing Co., Ltd. Address before: 400033, Chongqing District, Shapingba Town, Nanxi village Qinglong mouth Patentee before: Song Xinghui |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151118 Effective date of abandoning: 20180522 |