In prior art, automobile, motorcycle, electric bicycle are all directly control closure or Current Control speed by speed-regulating handle or accelerator pedal substantially, or adopt hand-control mechanical automatic automatic transmission mode to realize speed change.The operation of driver is depended in the operation of handle or accelerator pedal completely, operation usually can be caused not mate with garage situation, cause motor fluctuation of service, occur stall phenomenon.
Motor Vehicle when by rider when not knowing running resistance, only rule of thumb operate the speed change gear of control, there is following problem unavoidably: 1. start, go up a slope and heavy load time, due to running resistance increase, force motor speed decline work in inefficient district.2., owing to not having mechanical transmission to adjust moment of torsion and speed, can only promote the use of in plains region, use under mountain area, hills and heavy load conditions can not be met, reduce using scope; 3. driving wheel place installing space is little, is difficult to hold automatic transmission and other new technology again after having installed motor or motor; 4. do not possess adaptive function, automatically can not detect, revise and get rid of the error in operation of driver; 5., when speed of a motor vehicle change is unexpected, power of motor and running resistance must be caused to be difficult to mate.6. continue apart from short, grade ability is poor, accommodation is little.
In order to overcome the above problems, present inventor has invented a series of cam self-adapting automatic gear shifting device, utilize running resistance driving cam, reach self shifter and the object according to running resistance Adaptive matching speed of a motor vehicle output torque, there is good effect; Although aforesaid cam self-adapting automatic gear shifting device has above-mentioned advantage, stability and high efficiency comparatively prior art improve a lot, but parts thereof structure is comparatively complicated, speed changer volume is larger, the distortion of long-term operation component obviously, does not have stable support, causes running noises larger, affect running comfort and affect transmission efficiency, thus energy consumption is higher; Further, owing to have employed multiple cam structure, stability is still not ideal enough; Although comparatively prior art increases on service life, according to structural analysis, working life still has room for improvement; Meanwhile, the transmission of slow gear, owing to adopting cam auxiliary driving, although can pin speed change elastic element, is having pause and transition in rhythm or melody sense and is occurring noise in return process, increases the discomfort of addition.
Therefore, one is needed to improve above-mentioned cam self-adapting automatic gear shifting device, not only can self adaption with traveling change in resistance do not cut off driving force when automatically carry out shifted, solve the little problem that can not meet complex condition road occupation of motor torque-rotation speed change, and when slow gear transmission return release speed change elastic component, there is good stationarity and smoothness, eliminate pause and transition in rhythm or melody sense and noise, be beneficial to and increase work efficiency further, there is better energy conservation and consumption reduction effects, and improve working life, be more suitable for the roadsters such as battery-operated motor cycle to use.
Summary of the invention
In view of this, the object of this invention is to provide a kind of battery-operated motor cycle external rotor electric machine pendulum-type self-adapting automatic gear shift and drive assembly, not only can self adaption with traveling change in resistance do not cut off driving force when automatically carry out shifted, solve the little problem that can not meet complex condition road occupation of motor torque-rotation speed change, and when slow gear transmission return release speed change elastic component, there is good stationarity and smoothness, eliminate pause and transition in rhythm or melody sense and noise, be beneficial to and increase work efficiency further, there is better energy conservation and consumption reduction effects, and improve working life, be more suitable for the roadsters such as battery-operated motor cycle to use.
Battery-operated motor cycle external rotor electric machine pendulum-type self-adapting automatic gear shift of the present invention drives assembly, comprise drive motor, casing and coordinate with body pivot and the transmission shaft outputed power, the mechanical intelligent adaptive rate assembly also comprising slow gear driving mechanism and be arranged on transmission shaft;
Mechanical intelligent adaptive rate assembly comprises the axial external conical sleeve of cirque body, the axial inner conical drogue of cirque body and speed change elastic element;
The axial inner conical drogue inner circle of cirque body is the axial conical surface, and the axial external conical sleeve cylindrical of cirque body is the axial conical surface, and the axial inner conical drogue of cirque body is enclosed within the axial external conical sleeve excircle of cirque body in the mode that the conical surface is worked in coordination and forms the conical surface transmission transmitting fast shelves; Speed change elastic element applies to make the inner conical surface of its male cone (strobilus masculinus) and the axial inner conical drogue of cirque body to fit the pretightening force of transmission to the axial external conical sleeve of cirque body; During described transmission shaft Power output, main transmission cam is secondary applies the axial thrust load contrary with speed change elastic element pretightening force to the axial external conical sleeve of cirque body; The axial external conical sleeve of described cirque body is coated at transmission shaft and is coordinated by the auxiliary driving of main transmission cam with it;
Described slow gear driving mechanism comprises free wheel device and intermediate reduction gear driving mechanism, and described free wheel device is exported by the slow shelves transmission of power of slow shelves cam-engaged adjutant; Described slow shelves cam-engaged pair at least comprises a pendulum-type end cam engagement pair, and pendulum-type end cam engagement pair is made up of the Bidirectional end face cam with Bidirectional end face cam-shaped line.
Described drive motor is external rotor electric machine, and the stator of external rotor electric machine is fixed on casing, and external rotor coordinates with the axial inner conical drogue transmission of cirque body.
Further, described free wheel device comprises outer ring, inner ring and rolling element, forms the engagement space being used for being engaged by rolling element or being separated between described outer ring and inner ring; Power is inputed to free wheel device outer ring by intermediate reduction gear mechanism by the axial inner conical drogue of described cirque body, and slow shelves transmission of power is exported to the axial external conical sleeve of cirque body by described free wheel device inner ring;
Further, pendulum-type end cam engagement pair comprises pendulum cam dish I and pendulum cam dish II, and pendulum-type end cam engagement pair is consisted of the Bidirectional end face cam-engaged with Bidirectional end face cam-shaped line be provided with pendulum cam dish I and pendulum cam dish II;
Further, pendulum cam dish I and pendulum cam dish II are equipped with bidirectional cam groove along the circumferential direction, described bidirectional cam groove is the structure shoaled gradually to two ends by centre, the cam rolling element engagement driving by being provided with in bidirectional cam groove between described pendulum cam dish I and pendulum cam dish II;
Further, the inner ring of described free wheel device and pendulum cam dish I coordinate in circumferencial direction transmission, are coordinated between the axial external conical sleeve of cirque body and pendulum cam dish II by cam pair in circumferencial direction transmission; The inner ring of described free wheel device makes in transmission power output sense of rotation and is surmounting between outer ring;
Further, described pendulum cam dish I is shaped in inner ring;
Further, the internal spiral cam that the secondary internal spiral cam that is provided with by the axial external conical sleeve inner circle of described cirque body of described main transmission cam and transmission shaft are provided with complements each other to form;
Further, the shaft part transmission that described transmission shaft extends casing coordinates the driving component be provided with for coordinating with hub drive;
Further, the external rotor of described drive motor is coordinated by the axial inner conical drogue transmission of transmission bracket and cirque body, and described transmission bracket forms the supporting portion coordinated with body pivot by bearing;
Further, transmission bracket one end is connected to form transmission with the axial inner conical drogue of cirque body and coordinates, one end away from the axial inner conical drogue of cirque body is rotatably assorted and is supported in gearbox casing, the space of described speed change elastic element between supporting frame and transmission shaft and be coated at transmission shaft.
The invention has the beneficial effects as follows: battery-operated motor cycle external rotor electric machine pendulum-type self-adapting automatic gear shift of the present invention drives assembly, there is all advantages of existing cam self-adapting automatic gear shifting device, if detect driving torque-rotating speed and running resistance-vehicle speed signal according to running resistance, output power of motor and traveling state of vehicle is made to be in optimum Match state all the time, the balance realizing vehicle traction moment and comprehensive running resistance controls, and when not cutting off driving force, self adaption carries out shift speed change automatically with traveling change in resistance; Use under can meeting mountain area, hills and heavy load conditions, make motor load change mild, motor vehicle operate steadily, and improve Security;
Simultaneously, the present invention keeps off transmission slowly and locking elastic element adopts the pendulum-type end cam engagement pair be made up of Bidirectional end face cam, have in shift process and swing buffering, during release speed change elastic component, there is good stationarity and smoothness, eliminate pause and transition in rhythm or melody sense and noise, be beneficial to and increase work efficiency further; Reduce the transmission energy consumption in shift process, there is better energy conservation and consumption reduction effects, and improve working life, be more suitable for the roadster such as electric three-wheel or electric vehicle and use, extend running time and operating range, greatly improve the power character of vehicle, Economy, drive safety and travelling comfort.
Embodiment
Fig. 1 is axial section structural representation of the present invention, Fig. 2 is Bidirectional end face cam structure schematic diagram, as shown in the figure: battery-operated motor cycle external rotor electric machine pendulum-type self-adapting automatic gear shift of the present invention drives assembly, comprise drive motor 8, casing 3 and be rotatably assorted and the transmission shaft outputed power with casing 3, the mechanical intelligent adaptive rate assembly also comprising slow gear driving mechanism and be arranged on transmission shaft;
Mechanical intelligent adaptive rate assembly comprises the axial external conical sleeve 6 of cirque body, the axial inner conical drogue 7 of cirque body and speed change elastic element;
Axial inner conical drogue 7 inner circle of ring body is the axial conical surface, and axial external conical sleeve 6 cylindrical of cirque body is the axial conical surface, and the axial inner conical drogue 7 of ring body is enclosed within axial external conical sleeve 6 excircle of cirque body in the mode that the conical surface is worked in coordination and forms the conical surface transmission transmitting fast shelves; Speed change elastic element applies to make the inner conical surface of its male cone (strobilus masculinus) and the axial inner conical drogue 7 of ring body to fit the pretightening force of transmission to the axial external conical sleeve 6 of cirque body; During described transmission shaft Power output, main transmission cam is secondary applies the axial thrust load contrary with speed change elastic element pretightening force to the axial external conical sleeve 6 of cirque body; The axial external conical sleeve 6 of described cirque body is coated at transmission shaft and is coordinated by the auxiliary driving of main transmission cam with it;
Described slow gear driving mechanism comprises free wheel device and intermediate reduction gear driving mechanism, described free wheel device comprises outer ring 15, inner ring 14 and rolling element, the engagement space being used for being engaged by rolling element or being separated is formed between described outer ring 15 and inner ring 14, power is inputed to free wheel device outer ring 15 by intermediate reduction gear mechanism by the axial inner conical drogue 7 of described ring body, and slow shelves transmission of power is exported to the axial external conical sleeve 6 of cirque body by described free wheel device inner ring 14; The rolling element of free wheel device and the structure in engagement space belong to prior art, do not repeat them here; Intermediate reduction gear driving mechanism can be primary gear speed reducing transmission or other reducing transmission structures, and this intermediate reduction gear driving mechanism can ensure that the axial external conical sleeve 6 of cirque body is passed to the rotating speed of rotating speed lower than the axial external conical sleeve 6 of cirque body of the outer ring 15 of free wheel device; For realizing goal of the invention of the present invention, the inner ring 14 of described free wheel device exports in sense of rotation at power output member and surmounts between outer ring 15; As shown in the figure, described intermediate reduction gear driving mechanism comprises slow shelves jack shaft, be arranged at first slow grade of gear and second slow grade of gear that slow shelves jack shaft coordinates with its transmission, and slow shelves jack shaft is rotatably assorted in mission case 3 by annular bearing with rolling contact; Coordinate drive mechanisms such as () splines to be provided with slow shelves driving gear 13 with axial external conical sleeve 6 transmission of described cirque body, described slow shelves driving gear coordinates with first slow grade of gear 10 engagement driving, outer ring 15 engagement driving of second slow grade of gear 12 and free wheel device; Simple and compact for structure, realize the transmission of power of slow shelves; Described free wheel device is exported by the slow shelves transmission of power of slow shelves cam-engaged adjutant; Described slow shelves cam-engaged pair at least comprises a pendulum-type end cam engagement pair, and pendulum-type end cam engagement pair is made up of the Bidirectional end face cam with Bidirectional end face cam-shaped line; Bidirectional end face cam refers to the end cam that can realize two-way engagement; Be beneficial to and transfer elimination gearshift pause and transition in rhythm or melody in fast shelves process in slow shelves transmission, slow shelves and fast shelves can be made to input to power output member from coaxial both direction, there is good adaptability, and save drive efficiency;
Described drive motor is external rotor electric machine, and the stator of external rotor electric machine is fixed on casing 3, and external rotor 9 coordinates with axial inner conical drogue 7 transmission of ring body.
In the present embodiment, the external rotor 9 of described drive motor is coordinated by axial inner conical drogue 7 transmission of transmission bracket and ring body, and described transmission bracket forms the supporting portion be rotatably assorted by bearing and casing 3; This structure is beneficial to and forms stable support transmission, and meanwhile, compact structure, is convenient to install and use; As shown in the figure, transmission bracket 5 one end forms the supporting portion be rotatably assorted by bearing and casing 3, and the other end coordinates with axial external conical sleeve 6 transmission of cirque body, and forms support.
In the present embodiment, pendulum-type end cam engagement pair comprises pendulum cam dish I and pendulum cam dish II, and pendulum-type end cam engagement pair is consisted of the Bidirectional end face cam-engaged with Bidirectional end face cam-shaped line be provided with pendulum cam dish I and pendulum cam dish II; Can be that pendulum cam dish I and pendulum cam dish II are equipped with end cam, also can be that one of them arranges end cam, all can realize goal of the invention.
In the present embodiment, pendulum cam dish I and pendulum cam dish II 16 are equipped with bidirectional cam groove along the circumferential direction, described bidirectional cam groove is the structure shoaled gradually to two ends by centre, cam rolling element 10 engagement driving by being provided with in bidirectional cam groove between described pendulum cam dish I and pendulum cam dish II 16; Form two-way engagement by cam rolling element 10, there is good guidance quality, meanwhile, reduce cam-engaged friction, reduce energy consumption; Cam rolling element is generally ball.
In the present embodiment, the inner ring 14 of described free wheel device and pendulum cam dish I coordinate in circumferencial direction transmission, simple and compact for structure, make, operation and maintenance cost is lower, and stable transmission; Coordinate in circumferencial direction transmission by cam is secondary between the axial external conical sleeve 4 of cirque body and pendulum cam dish II 16, increase the flexibility of transmission; Certainly, when spatial condition possesses, also can be multiple cam secondary; The inner ring of described free wheel device makes in transmission power output sense of rotation and is surmounting between outer ring.
Free wheel device inner ring 14 and the axial external conical sleeve 6 of cirque body are coordinated by the transmission of pendulum-type end cam engagement pair and are passed to the axial external conical sleeve 6 of cirque body by keeping off the clutch end of power by intermediate reduction gear driving mechanism slowly, certainly, centre also can arrange intermediate cam cover and form multiple cam auxiliary driving; When slow shelves form transmission, utilize the axial thrust load compression elastic element of pendulum-type end cam engagement pair, cam pair, main transmission cam pair to form locking, and form slow shelves transmission; In the present embodiment, the internal spiral cam 6a that described main transmission cam pair is provided with by axial external conical sleeve 6 inner circle of described cirque body and the external spiral cam 1a that transmission shaft 1 is provided with complements each other to form, and forms spiral prominence wheel set; The shaft part transmission that described transmission shaft 1 extends casing 3 coordinates the driving component 2 be provided with for coordinating with hub drive, and as shown in the figure, this driving component 2 is the drive plate structure for being connected with wheel hub; As shown in the figure, axial inner conical drogue 7 outer rim of cirque body coordinates with transmission bracket 8 transmission; The axial external conical sleeve 6 of described cirque body is coated at transmission shaft 1 and inner circle is provided with internal spiral cam 6a, and transmission shaft 1 is provided with the external spiral cam 1a matched with internal spiral cam and jointly forms spiral prominence wheel set; Spiral prominence wheel set is the worm structure cooperatively interacted, and the two is spiral chute, and embedded ball 18 forms meshing transmission structure; When the axial external conical sleeve 6 of cirque body rotates, by spiral prominence wheel set, axis and circumferencial direction two component are produced to transmission shaft 1, wherein circumferencial direction component drives transmission shaft 1 to rotate and outputting power, the mounting structure that axial thrust load is transmitted axle 1 is offset, and its reaction force acts is in the axial external conical sleeve 6 of cirque body and put on speed change elastic element 4; When axial thrust load reaches setting numerical value, compression is formed to elastic element, the axial external conical sleeve 6 of cirque body is separated with the axial inner conical drogue 7 of cirque body, forms the condition of speed change, belong to the structure of prior art, do not repeat them here; Certainly, spiral prominence wheel set is the preferred structure of the present embodiment, and other cam pair existing also can be adopted to drive, such as end cam etc., but spiral prominence wheel set can make this structure more compact, manufactures, installs and keep in repair more convenient, and helix structure stable drive, uniform force, there is unrivaled stability and smoothness, increase work efficiency further, there is better energy conservation and consumption reduction effects, larger control vehicular discharge, is more suitable for the roadsters such as light two-wheel vehicle and uses.
As shown in the figure, slow shelves driving gear is rotatably assorted and is coated at supporting portion that cam disk II 16 formed and the axle sleeve position that the axial inner conical drogue 7 of ring body is formed, the cam auxiliary driving position namely between cam disk II 16 and the axial external conical sleeve 6 of cirque body; And grade driving gear of waiting a moment coordinates with axial external conical sleeve 6 transmission of cirque body; General structure is simply compact, is beneficial to assembling, is suitable for the structure of external rotor electric machine transmission.
In the present embodiment, described pendulum cam dish I is shaped in inner ring; The whole free wheel device of this structure, by inner ring and outer ring common support, increases global stability, ensures working life and transmission accuracy.
In the present embodiment, transmission bracket one end is connected with the axial external conical sleeve 6 of cirque body and transmission coordinates, one end away from the axial external conical sleeve 6 of cirque body is rotatably assorted and is supported in gearbox casing 3, the space of described speed change elastic element between transmission bracket and transmission shaft 1 and be coated at transmission shaft 1; As shown in the figure, transmission shaft 1 is provided with free wheel device, cam disk II 16, the axial external conical sleeve 6 of cirque body and speed change elastic element (the present embodiment adopts speed change disc spring) by left-to-right, the transmission bracket of tubular structure forms stable support to the axial external conical sleeve 6 of cirque body, ensure transmission accuracy, simultaneously, speed change elastic element is in the space of transmission bracket between transmission shaft 1 and be coated at transmission shaft 1, compact structure.
Above embodiment is optimum structure of the present invention, is not limiting the scope of the present invention; The scheme that Placement adjusts to some extent, and do not affect the realization of this goal of the invention.
The fast gear power transmission line of the present embodiment:
External spiral cam 1a → transmission shaft 1 outputting power of the internal spiral cam 6a → transmission shaft 1 of the axial external conical sleeve 6 of the axial external conical sleeve 6 → cirque body of the axial inner conical drogue 7 → cirque body of power → cirque body;
Now free wheel device surmounts, and resistance transfer route: internal spiral cam 6a → cirque body axial external conical sleeve 6 → compression speed change butterfly spring of the axial external conical sleeve 6 of external spiral cam 1a → cirque body of transmission shaft 1 → transmission shaft 1; Transmission shaft 1 is applied axial force by the external spiral cam of transmission shaft 1 to the internal spiral cam 6a of the axial external conical sleeve 6 of cirque body and the axial external conical sleeve 6 of cirque body and compresses speed change butterfly spring, when running resistance is increased to a timing, this axial force speed change butterfly spring, the axial inner conical drogue 7 of cirque body is separated with the axial external conical sleeve 6 of cirque body, power is transmitted by following route, namely keeps off power transmission line slowly:
The axial inner conical drogue of power → cirque body 7 → keep off slowly driving gear → the first keeps off gear → keep off external spiral cam → transmission shaft 1 outputting power that jack shaft → the second keeps off the internal spiral cam → transmission shaft 1 of the axial external conical sleeve 6 of the axial external conical sleeve 6 → cirque body of outer ring 15 → free wheel device inner ring, 14 → pendulum-type end cam engagement pair → cam pair → cirque body of gear → free wheel device slowly slowly slowly.
Slow gear power transmission line is simultaneously also through following route: pendulum-type end cam engagement pair → cam pair → cirque body axial external conical sleeve 6 → compression speed change butterfly spring, prevent from keeping off slowly in transmission process and occur compression speed change butterfly spring reciprocating compression, thus when preventing slow shelves transmission, the axial inner conical drogue 7 of cirque body and the axial external conical sleeve 6 of cirque body are fitted.
Above-mentioned transfer route is had to find out, the present invention operationally, the inner conical surface of the axial inner conical drogue 7 of cirque body and the male cone (strobilus masculinus) of the axial external conical sleeve 6 of cirque body fit tightly under the effect of speed change butterfly spring, form the automatic transmission that keeps certain pressure, and the required pressure of clutch engagement can be adjusted by the axial thickness increasing speed change axle sleeve, reach transmission object, now, power drives the axial inner conical drogue 7 of cirque body, cirque body axial external conical sleeve 6, transmission shaft 1, and transmission shaft 1 outputting power is rotated counterclockwise; Now keep off free wheel device to be slowly in and to surmount state.
During motor vehicle starting, resistance is greater than driving force, and resistance forces transmission shaft 1 to rotate clockwise several angle, and under the effect of the external spiral cam of transmission shaft 1, the axial external conical sleeve 6 of cirque body compresses speed change butterfly spring; The axial external conical sleeve 6 of cirque body is separated with the axial inner conical drogue 7 of cirque body, synchronously, slow gear free wheel device engagement, power drives the axial inner conical drogue 7, first of cirque body to keep off gear slowly, keep off jack shaft, second slowly keeps off gear, the outer ring 15 of free wheel device, inner ring 14, pendulum-type end cam engagement pair, the axial external conical sleeve 6 of cirque body and transmission shaft 1 slowly, and transmission shaft 1 outputting power is rotated to keep off speed slowly; Therefore, automatically achieve bottom gear and start, shorten the starting time, decrease starting force.Meanwhile, speed change butterfly spring absorbs movement resistor moment energy, stores standby potential energy for recovering gear transferring power soon.
Start successfully, running resistance reduces, when component is reduced to less than the pressure that speed change butterfly spring produces, produce under speed change butterfly spring pressure discharges promotion rapidly because the compression of passive movement resistance, the inner conical surface of the male cone (strobilus masculinus) and the axial inner conical drogue 7 of cirque body that complete the axial external conical sleeve 6 of cirque body recovers to fit tightly state, and slow gear free wheel device is in and surmounts state.
In running process, along with the change self shifter principle of resistance to motion is the same, realizing variable block when not needing to cut off driving force, make whole locomotive operation steady, safe and low consumption, and transfer route being simplified, improving transmission efficiency.
What finally illustrate is, above embodiment is only in order to illustrate technological scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technological scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.