CN102303684A - Electric hub - Google Patents
Electric hub Download PDFInfo
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- CN102303684A CN102303684A CN201110182371A CN201110182371A CN102303684A CN 102303684 A CN102303684 A CN 102303684A CN 201110182371 A CN201110182371 A CN 201110182371A CN 201110182371 A CN201110182371 A CN 201110182371A CN 102303684 A CN102303684 A CN 102303684A
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Abstract
The invention discloses an electric hub, which comprises a motor, a hub of a combined structure, a first half shaft, a second half shaft and a gear transmission system, wherein the motor and the hub are arranged coaxially; the first half shaft and the second half shaft are mainly used for supporting the motor and the hub and arranged coaxially; the gear transmission system is used for transmitting power of the motor to the hub; and the first half shaft and the second half shaft are fixedly connected through disc structures arranged at the opposite ends, a U-shaped space for holding main components of the gear transmission system is formed between the disc structures of the first half shaft and the second half shaft, and the gear transmission system is provided with an electrically controlled two-gear shifting device. Preferably, the gear shifting device mainly consists of a push rod electromagnet, a controllable overrunning clutch structure and a control mechanism, wherein the control mechanism is provided with a maintaining mechanism used for shifting the first gear of the electric hub to the second gear and maintaining the gear or shifting the second gear of the electric hub to the first gear after the push rod electromagnet is briefly electrified and discharged. The electric hub has the advantages of capability of realizing gear shifting and speed change, low energy consumption, high response speed and long service life.
Description
Technical field
The present invention relates to a kind of electric driver, particularly a kind of electric wheel hub that is used for various battery-driven cars drivings.
Background technology
The drive configuration that is used for battery-driven car has two kinds of forms usually; A kind of is that drive motor and wheel hub are the branch body structure; Drive motor is fixed on vehicle frame or the axletree; Through gear or chain rotatablely moving of motor passed to drive hub; Another kind is that this structure is commonly referred to wheel hub motor, motor wheel hub or electric wheel hub with drive motor and hub design all-in-one-piece integral structure.Existing a kind of integrally-built electric wheel hub; Comprise motor and wheel hub, first semiaxis that is coaxially set and interfixes and second semiaxis that are mainly used in support motor and wheel hub that is coaxially set, the gear train assembly that is used for motor power is passed to wheel hub; Wherein, First semiaxis is captiveed joint to the disk-like structure that the end is provided with the second semiaxis green phase, is formed with the U-shaped space that is used to hold the gear train assembly major part between the disk-like structure of first semiaxis and second semiaxis; The bearing that wheel hub is provided with through both sides coaxial rotation respectively is supported on the axle portion of first semiaxis and second semiaxis, and the motor pivot stretches into from the through hole that first semiaxis middle part is provided with.Because wheel hub and rotor are the integral structures that is coaxially set, and be positioned at wheel hub in-to-in transmission gear rotatablely moving of rotor passed to wheel hub.It not only has compact conformation, characteristics easy for installation, and because its transmission gear is located at wheel hub inside, can abundant and good lubricating be provided to gear train assembly, so also have the advantage of transmission efficiency height, long service life.Therefore, the electric wheel hub of this structure obtains application more and more widely on electric transportation instruments such as battery-operated motor cycle, bicycle, electro-tricycle, electric four-wheel vehicle.But because this electric wheel hub is not provided with power-shift gear box; So existence can not shift speed change; Road speed does not increase and wastes energy when causing vehicle to run at high speed; Perhaps cause the requirement of vehicle incompatibility complex road condition, influence the road adaptive capacity of vehicle because of lacking rational low speed gear.Simultaneously, because the motor pivot of the electric wheel hub of this structure need stretch into from first semiaxis in the air, therefore, the pivot structure size is less, and in use the pivot easy fatigue is damaged, and for this reason, needs further to improve.
Summary of the invention
To the deficiency of prior art, first purpose of the present invention just provides a kind of electric wheel hub with shift speed change function.Second purpose of the present invention provides a kind of electric wheel hub of long service life.
For realizing above-mentioned purpose, the present invention adopts following technical scheme.
A kind of electric wheel hub; Comprise the motor that is coaxially set and unitized construction wheel hub, be mainly used in support motor and wheel hub first semiaxis that is coaxially set and interfixes and second semiaxis, be used for motor power is passed to the gear train assembly of wheel hub; Wherein, First semiaxis is captiveed joint to the disk-like structure that the end is provided with the second semiaxis green phase; Be formed with the U-shaped space that is used to hold the gear train assembly major part between the disk-like structure of first semiaxis and second semiaxis, said gear train assembly is provided with power-shift gear box.
After adopting the aforementioned techniques scheme; Owing in the gear train assembly of electric wheel hub, be provided with power-shift gear box; Therefore; Electric wheel hub can carry out shift speed change in the work engineering; Vehicle in the process of moving; Navigating mate can be according to condition of road surface, selects suitable gear adapting to different road speed requirements, thereby realizes first purpose of the present invention.
Optimized technical scheme; Said power-shift gear box is the automatically controlled machine blocking means of two gears; Comprise the gear wheel shaft and the output shaft that constitute gear train assembly; The bearing rotational support that gear wheel shaft and output shaft pass through two ends respectively is on the disk-like structure of first semiaxis and second semiaxis; Gear wheel shaft is driven through the one-level gear transmission by the pivot of motor, and output shaft drives wheel hub through the one-level gear transmission and rotates; A coaxial retaining driving gear and the two retaining driving gears of being fixed with on the gear wheel shaft; A coaxial retaining driven gear and the two retaining driven gears of being provided with on the output shaft; One retaining driving gear and a retaining driven gear and two retaining driving gears and the corresponding constant-mesh of two retaining driven gears, a retaining driven gear rotating speed is lower than two retaining driven gear rotating speeds; Be provided with isolator between a said retaining driven gear and the output shaft, output shaft can be through isolator by rotational speed such as retaining driven gear drives; Be provided with the controllable over run clutch structure of power operated control between said two retaining driven gears and the output shaft; The controllable over run clutch structure is connected with control mechanism through its function unit; When controlling the controllable over run clutch structure through control mechanism; By rotational speed such as two retaining driven gear drives, an output shaft and a retaining driven gear are in and surmount state output shaft through the controllable over run clutch structure.Power-shift gear box adopt two gear electric-controlled mechanical gearshifts guarantee simple in structure, cost is low, easy to operate, be specially adapted to hand-held design traffic, transportation meanss such as battery-operated motor cycle, Electrical Bicycle.
Further optimized technical scheme; Said controllable over run clutch structure is roller or ball-type overriding clutch structure; Comprise with two retaining driven gears constitute the overdrive clutch relation cam, can form several rollers or the ball shape frictional engagement body of frictional connectiones with cam and two retaining driven gears, cam and output shaft form through spline structure dismantled and assembledly captives joint; Said function unit is connected with several rollers or ball shape frictional engagement body simultaneously; Be connected with between function unit and the cam and be used to make cam and two retaining driven gears to keep the elastic component of overdrive clutch state; Function unit rotates and is synchronized with the movement to stir several frictional engagement bodies, makes cam and two retaining driven gears form frictional connection through several rollers or ball shape frictional engagement body.Further guarantee simple in structure, cost is low.
Optimized technical scheme, said control mechanism form the magnet coil of electromagnetic attraction to function unit for the energising back.Said control mechanism only is provided with magnet coil, can guarantee simple in structure, low cost of manufacture, and simultaneously, fault rate is low, use cost is low.
Optimized technical scheme; Said control mechanism comprises the push rod electromagnet; And the tapered shaft that promotes by the push rod electromagnet with wedge shape driving surface; Tapered shaft is slidingly fitted in the centre hole that output shaft is provided with; Be connected with the spherical element of stirring on the wedge shape driving surface of tapered shaft; The spherical element of stirring can stretch out from the pipe tap of output shaft; Spherical stirring between element and the function unit is connected with leverage; Leverage is used for that the spherical radial displacement of stirring element is amplified conversion controling part and circumferentially rotates, so that cam and two retaining driven gears are realized frictional connection.To stir element design glomeration body, the characteristic of utilizing globoid in moving radially process, to be prone to rotate reaches the resistance of reducing friction, minimizing energy consumption, improves the purpose of speed of response; Simultaneously; Because adopting leverage to convert spherical radial displacement amplification of stirring element to function unit circumferentially rotates; Accuracy of manufacture to function unit requires lower; Save the burn in period that assembles, reduced repair rate, thereby improved production efficiency, reduced manufacturing cost.
Further optimized technical scheme, said leverage is positioned at function unit one side, and the lever input end of leverage is slidably supported on spherical stirring on the element, and the mouth of lever and function unit flexibly connect; The bearing pin that is used for the support lever rotation in the leverage is fixedly connected on cam, perhaps is fixed on the reaction plate of fixing with output shaft.The bearing pin that is used for the support lever rotation in the leverage is fixedly connected on cam, so that compact conformation; Certainly also can be fixed on the reaction plate of fixing with output shaft, to realize simple load and unload purpose.
Further optimized technical scheme; Also be connected with maintaining body between said push rod electromagnet and the tapered shaft; The dead electricity in push rod electromagnet energising back; Maintaining body makes two retaining driven gears and cams from surmounting state exchange to the frictional connection state and keep, perhaps make two keep off driven gears and cam from the frictional connection state exchange to surmounting state.Owing between control mechanism and push rod electromagnet, be provided with maintaining body, when two retaining driven gears and cam are in when surmounting state, the push rod electromagnet get electric after, maintaining body makes two to keep off driven gears and cam from surmounting state exchange to the frictional connection state.At this moment, even push rod electromagnet dead electricity, maintaining body still makes two retaining driven gears and cam keep frictional connection and rotation synchronously, and does not need the push rod electromagnet is continued energising, has saved the required energy resource consumption of electromagnet.
Further a preferred embodiment, the holding mechanism includes a slide fitted in the center hole of the output shaft of the rotary body-shaped pressing member, the outer end of said push rod connected to the solenoid plunger, pushing outer peripheral axially sliding groove through the sliding groove with the output shaft is fixedly connected with the guide rails, the pressing body and the lever is provided between said wedge-shaped rotary body holding member, holding between the body and the pressing or a separate elastomer holder and pressing the opposed end faces of both body cloth with each other even number of ratchet teeth of the outer periphery holding body has an axial through uniform and for receiving the guide chute, chute holder Quantity half the number of teeth on the face, and the guide chute holder sliding fit through the center hole of the output shaft to keep the body in the circumferential direction from the rail after rotation; toward said guide end portion of the retaining body and the holding body to adapt the work surface of the ratchet guide portion; said slide groove in the pusher face the back of the first tooth root of the chute in the tooth holder corresponding to the central face; said wedge wedge rod has a work surface located given distance in a wedge-shaped segments or smooth rod and is connected between the holder to keep the elastomer to enable the body to maintain its chute off the rail, the two gear driven gear and the cam is always friction connection status; output at Wedges between the bottom of the shaft bore a return elastomer.
When captive joint with the push rod of push rod electromagnet in the outer end of aforementioned pushing body, the pushing body is withdrawed from by the push rod pulling of push rod electromagnet; When the outer end of pushing body only forms the flexible connection that end face contacts with the push rod of push rod electromagnet; Then keeping establishing separated resilient bodies between body and the pushing body; So that when the push rod of push rod electromagnet withdraws from, the pushing body withdraws from the push rod of push rod electromagnet under the separated resilient bodies effect.Guarantee simple in structure, dependable performance.
Further optimized technical scheme again, said separated resilient bodies, return elastic body or to keep elastic body be in cushion, belleville spring, the compression spring any one.Only need have enough axial deflections with elastic force gets final product, it is extensive, easily manufactured to draw materials.
Further again optimized technical scheme; The push rod front end of said push rod electromagnet also is connected with the lever transfer device, and the lever transfer device is used for the pushing body of the motion of push rod electromagnet push-rod commutation through maintaining body, keeps body and separated resilient bodies to pass to tapered shaft.The push rod electromagnet is provided with by parallel mode arranged side by side with output shaft,, reduces the volume of electric wheel hub, reduce installing space, improve applicability to practice thrift installing space.
Optimized technical scheme, the pivot of said motor in a tubular form, motor is fixed through its electric machine casing and first semiaxis, pivot is rotatably connected on the first half shafts portion through coaxial bearing, pivot stretches in the wheel hub; Said gear train assembly comprises motor gear, gear wheel, and motor gear is fixed on the pivot front end, and motor gear is engaged with input gear, and input gear is fixed on the gear wheel shaft; Gear wheel is fixed on second end cap of wheel hub, and in the second half shafts portion, the output gear on gear wheel and the output shaft meshes gear wheel through the coaxial bearing rotational support; Said wheel hub also passes through first end cap and coaxial bearing rotational support on pivot.The tubular pivot sectional dimension is big, intensity is high, good rigidly, thereby helps prolonging the service life of electric wheel hub, thereby realizes second purpose of the present invention.
Further optimized technical scheme, said gear wheel comprises gear body, cushion collar, buffering body for the gear of band buffer structure, and gear body ring set is in the second half shafts portion, and the gear body is evenly distributed in a plurality of holes; Said buffering body is extruded with the buffer shaft that stretches into the cushion collar hole on the buffering body between gear body and wheel hub, the buffering body is captiveed joint with wheel hub, and the buffering body passes through the coaxial bearing rotational support in the second half shafts portion; Said cushion collar is processed by the material with damping performance, and cushion collar is filled between a plurality of hole inwalls on buffer shaft periphery and the gear body, and cushion collar is stopped by cover plate in case along the buffer shaft slippage, cover plate is connected with the buffering body-fixed through screw.The gear wheel of band buffer structure can effectively be eliminated shift impact, helps improving the fatigue life of gear wheel, thereby further prolongs the service life of electric wheel hub.
The present invention's beneficial effect compared with prior art is can realize shift speed change, and energy consumption to be low, speed of response fast, long service life, applied widely.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1.
Fig. 2 is a gear wheel structural representation of the present invention.
The left view of Fig. 3 Fig. 2 of the present invention.
Fig. 4 is the present invention 2 a right elevation.
The structural representation of Fig. 5 embodiment of the invention 2.
Fig. 6 is the A portion enlarged drawing among Fig. 5 of the present invention.
Fig. 7 is the B-B cutaway view among Fig. 6 of the present invention.
Fig. 8 is the C-C cutaway view among Fig. 6 of the present invention.
Fig. 9 is the D-D cutaway view among Fig. 8 of the present invention.
Figure 10 is the structural representation in the embodiment of the invention 3.
Figure 11 is the E portion enlarged drawing among Figure 10 of the present invention.
Figure 12 is the structural representation of the embodiment of the invention 4.
Figure 13 is the F portion enlarged drawing among Figure 12 of the present invention.
Figure 14 is the G-G cutaway view among Figure 13 of the present invention.
Figure 15 is the structural representation of the embodiment of the invention 5.
Figure 16 is the H portion enlarged drawing among Figure 12 of the present invention.
Figure 17 is the L-L cutaway view among Figure 13 of the present invention.
Figure 18 is the maintaining body state change map among the present invention.
The specific embodiment
The present invention is further illustrated below in conjunction with accompanying drawing, but therefore do not limit the present invention among the described scope of embodiments.
Embodiment 1Referring to Fig. 1; Fig. 2; Fig. 3; Fig. 4; A kind of electric wheel hub; The wheel hub 2 that comprises the motor that is coaxially set 1 and unitized construction; Be mainly used in first semiaxis 3 that is coaxially set and interfixes and second semiaxis 4 of support motor 1 and wheel hub 2; Be used for motor 1 transmission of power is given the gear train assembly of wheel hub 2; Wherein, First semiaxis 3 is captiveed joint to the disk-like structure that the end is provided with second semiaxis, 4 green phases; Be formed with the U-shaped space that is used to hold the gear train assembly major part between the disk-like structure of first semiaxis 3 and second semiaxis 4, said gear train assembly is provided with power-shift gear box.
Said power-shift gear box is the automatically controlled gearshifts of two gears; Comprise the gear wheel shaft 65 and output shaft 66 that constitute gear train assembly; The bearing rotational support that gear wheel shaft 65 and output shaft 66 pass through two ends respectively is on the disk-like structure of first semiaxis 3 and second semiaxis 4; Gear wheel shaft 65 is driven through the one-level gear transmission by the pivot 11 of motor 1, and output shaft 66 drives wheel hub 2 through the one-level gear transmission and rotates; A coaxial retaining driving gear 61 and the two retaining driving gears 62 of being fixed with on the gear wheel shaft 65; A coaxial retaining driven gear 63 and the two retaining driven gears 64 of being provided with on the output shaft 66; One retaining driving gear 61 and a retaining driven gear 63 and two retaining driving gears 62 and two retaining driven gears, 64 corresponding constant-meshes, a retaining driven gear 63 rotating speeds are lower than two retaining driven gears, 64 rotating speeds; Be provided with isolator 63a between a said retaining driven gear 63 and the output shaft 66, output shaft 66 can be through isolator 63a by rotational speed such as a retaining driven gear 63 drives; Be provided with the controllable over run clutch structure of power operated control between said two retaining driven gears 64 and the output shaft 66; The controllable over run clutch structure is connected with control mechanism through its function unit 69; When controlling the controllable over run clutch structure through control mechanism; By rotational speed such as two retaining driven gears, 64 drives, an output shaft 66 and a retaining driven gear 63 are in and surmount state output shaft 66 through the controllable over run clutch structure.
Said controllable over run clutch structure is a roller controllable overrunning clutch structure; Comprise with two retaining driven gears 64 constituting the cam 67 of overdrive clutch relation, several roller shape frictional engagement bodies 68 that can form frictional connectiones with cam 67 and two retaining driven gears 64 that cam 67 and output shaft 66 form through spline structure dismantled and assembledly captives joint; Said function unit 69 is connected with several roller shapes or spherical shape frictional engagement body 68 simultaneously; Be connected with the elastic component 87 that is used to make cam 67 and two retaining driven gears, 64 maintenance overdrive clutch states between function unit 69 and the cam 67; Function unit 69 rotates and is synchronized with the movement to stir several roller shape frictional engagement bodies 68, makes cam 67 and two retaining driven gears 64 form frictional connection through several roller shape frictional engagement bodies 68.
Said elastic component 87 is a compression spring.
The magnet coil 70 that said control mechanism forms electromagnetic attraction for the energising back to function unit 69.
The pivot 11 of said motor 1 in a tubular form, motor 1 is fixed through its electric machine casing and first semiaxis 3, pivot 11 is rotatably connected on first semiaxis, 3 bar portions through coaxial bearing, pivot 11 stretches in the wheel hub 2; Said gear train assembly comprises motor gear 79, gear wheel, and motor gear 79 is fixed on pivot 11 front ends, and motor gear 79 is engaged with input gear 80, and input gear 80 is fixed on the gear wheel shaft 65; Gear wheel is fixed on second end cap 22 of wheel hub 2, and in second semiaxis, 4 bar portions, the output gear 82 on gear wheel and the output shaft 66 meshes gear wheel through the coaxial bearing rotational support; Said wheel hub 2 also passes through first end cap 21 and coaxial bearing rotational support on pivot 11.
Said gear wheel is the gear of band buffer structure, comprises gear body 83, cushion collar 84, buffering body 85, and gear body 83 ring sets are in second semiaxis, 4 bar portions, and gear body 83 is evenly distributed in a plurality of holes; Said buffering body 85 is extruded with the buffer shaft 85a that stretches into cushion collar 84 holes on the buffering body 85 between gear body 83 and wheel hub 2, buffering body 85 is captiveed joint with wheel hub 2, and buffering body 85 passes through the coaxial bearing rotational support in second semiaxis, 4 bar portions; Said cushion collar 84 is processed by the rubber with damping performance; Cushion collar 84 is filled between a plurality of hole inwalls on buffer shaft 85a periphery and the gear body 83; Cushion collar 84 is stopped by cover plate 86 in case along buffer shaft 85a slippage, cover plate 86 is captiveed joint with buffering body 85 through screw.
Present embodiment overriding clutch structure also can be a ball-type overriding clutch structure, and said frictional engagement body 68 is a ball.
embodiment Example 2? ? Referring to Figure 5, FIG. 6, the said control mechanism comprises push rod electromagnet 71, as well as by the push rod the electromagnet 71 promote having a wedge-shaped working face wedge rod 72, wedge-shaped lever 72 sliding fit in the output shaft 66 features a's center hole 66a middle, wedge-shaped rod 72's wedge-shaped work surface to connect there are globular toggle element (91), globose toggle element 91 available from the the output shaft 66 of the tube wall hole 66b stretched out, spherical toggle element 91 and the control member 69 is connected between the with lever mechanism, the lever mechanism is used the spherical toggle elements 91 radial displacement of the zoom back in. switching control member 69 circumferential direction rotated to so that the cam 67 and the Second speed driven gear 64 to achieve frictional connection.
Also be connected with maintaining body between said push rod electromagnet 71 and the tapered shaft 72; In push rod electromagnet 71 energising back dead electricity; Maintaining body makes two retaining driven gears 64 and cam 67 from surmounting state exchange to the frictional connection state and keeps, perhaps make two retaining driven gears 64 and cam 67 from the frictional connection state exchange to surmounting state.
The holding mechanism includes a slide fitted on the output shaft 66 of the center hole 66a of the locking sleeve 92 within the bore of the rotor body 73 shaped pressing the pressing body 73 of the outer end of the push rod magnet 71, pushing the outer peripheral body 73 has four axially uniform through a slide groove 73a, with the slide groove 73a are rails 74 within the guide rail 74 provided in the inner wall of the locking sleeve 92, the guide rail 74 by the locking sleeve 92 is fixedly connected with the output shaft 66, the pressing body 73 and the rod 72 is provided between said wedge-shaped rotary body holding member 75, holding member 75 and the pressing body 73 is provided between the elastic member 76 separate, keeping the pressing member 75 and the facing end face of the body 73 cloth on both complement each other even number 8 ratchet, keeping the outer periphery of the body 75 has four axial uniform throughout the rail 74 and the chute for receiving 75a, 75a holder 75 and the rail 74 via chute sliding fit in the output shaft 66 of the center hole 66a, the holder 75 from the guide rail 74 in the circumferential direction after rotation; said guide rail 74 toward the holding body 75 is provided at the end of the holder body 75 of the working surface of the ratchet guide portion adapted; sliding groove 73a of the body 73 in any of the pressing face on the back of the tooth root, runner 75a is on the holding body 75 corresponding to the middle tooth face; said wedge-shaped lever 72 has a wedge-shaped working surface smoothing section set distance 72a, with the holding member 75 is disengaged from the guides 74 which, after the chute 75a, the second-speed driven gear 64 and the cam 67 is always in frictional connection state; the wedge rod 72 and the output shaft 66 between the bottom of the central hole 66a has a back bit elastomer 78.Establish lock tube 92 at output shaft 66 and pushing body 73, so that guide rail 74 is located at lock tube 92, replaceable lock tube 92 after guide rail 74 weares and teares, with the service life of prolongation maintaining body, thus the service life of improving electric wheel hub.
Said separated resilient bodies 76, return elastic body 78 are compression spring.
Referring to Fig. 7, Fig. 8; Said leverage is provided with two covers; Two cover leverage circumference uniform distributions are on the reaction plate 90 of function unit 69 1 sides; Reaction plate 90 is provided with the breach that is used to hide leverage; Reaction plate 90 is fixedly connected on the output shaft 66 through spline removably; The bearing pin 89 that leverage is used for rotational support lever 88 is fixedly connected on reaction plate 90; Lever 88 input ends are slidably supported on spherical stirring on the element 91, and the mouth of lever 88 is provided with rolling post 88a and slides and be engaged in rotationally in the chute that function unit 69 is provided with.
Referring to Fig. 9; The push rod front end of said push rod electromagnet 71 also is connected with lever transfer device 71a, and lever transfer device 71a is used for the pushing body 73 of the motion of push rod electromagnet 71 push rods commutation through maintaining body, keeps body 75 and separated resilient bodies 76 to pass to tapered shaft 72.
All the other structures of present embodiment are identical with embodiment 1, repeat no more at this.
Embodiment 3Referring to Figure 10, Figure 11; Do not establish smooth section 72a on the wedge shape driving surface of said tapered shaft 72; Between tapered shaft 72 and maintenance body 75, be connected with and keep elastic body 77; Keep elastic body 77 to make and keep body 75 behind its chute 75a getaway 74, two retaining driven gears 64 are in the frictional connection state all the time with cam 67.
Said maintenance elastic body 77 is compression springs.
All the other structures of present embodiment are identical with embodiment 2, repeat no more at this.
Embodiment 4Referring to Figure 12, Figure 13, Figure 14; Said function unit 69 inboards are provided with breach; Leverage is arranged in the breach of function unit 69; Lever 88 input ends of leverage are slidably supported on spherical stirring on the element 91; The mouth of lever 88 is slidably supported on the shifting shaft 93 of captiveing joint with function unit 69, and the bearing pin 89 that is used for support lever 88 rotations in the leverage is fixedly connected on cam 67 side end faces.
All the other structures of present embodiment are identical with embodiment 3, repeat no more at this.
Embodiment 5Referring to Figure 15; Figure 16; Figure 17; A kind of electric wheel hub; Said controllable over run clutch structure is the two retainer overriding clutchs of Wedge-type; Comprise the cam 67 that constitutes the overdrive clutch relation with two retaining driven gears 64; Can keep off several Wedge-type frictional engagement bodies 68 that driven gears 64 form frictional connectiones with cam 67 and two; Wedge-type frictional engagement body 68 is by first retainer 93 and 94 controls of second retainer; First retainer 93 is positioned at second retainer, 94 inside; First retainer 93 is captiveed joint with cam 67; Second retainer, 94 1 end captive joints are by control panel 95; Second retainer 94 forms function unit 69 with control panel 95; First retainer 93 and the spring steel band that is provided with between cam 67 is captiveed joint constitute the elastic component 87 of controllable overrunning clutch; Elastic component 87 makes cam 67 and two retaining driven gears 64 keep the overdrive clutch state; Function unit 69 rotates and is synchronized with the movement to stir several Wedge-type frictional engagement bodies 68, makes several Wedge-type frictional engagement bodies 68 and cam 67 and two retaining driven gears 64 form frictional connection.
All the other structures of present embodiment are identical with embodiment 2, repeat no more at this.
Controllable over run clutch structure in the foregoing description 1 and 2 also can be the ball-type controllable overrunning clutch, and said frictional engagement body 68 is a ball.
Working processBe that example is carried out brief description to working process of the present invention with embodiment 2 below.
Referring to Fig. 5; Electrical power; Pivot 11 rotating tee are crossed motor gear 79; Input gear 80 driven gear axles 65 rotate; Be fixed on the retaining of one on the gear wheel shaft 65 driving gear 61; Two retaining driving gears 62 rotate with gear wheel shaft 65; Corresponding with one the retaining driving gear 61; Two retaining driving gears 62 a retaining driven gear 63 and the two retaining driven gears 64 of constant-mesh respectively rotate; One retaining driven gear 63 drives output shaft 66 through isolator 63a and rotates; At this moment; Tapered shaft 72 is in the outer end under 78 effects of return elastic body; The spherical element 91 of stirring is at elastic component 87; Radially retract to minimum position under function unit 69 and the leverage effect; Frictional engagement body 68 and two retaining driven gears 64 break away from; It is that two retaining driven gears 64 surmount state with output shaft 66 formations that two retaining driven gears 64 and function unit 69 formation surmount state; The pushing body 73 of maintaining body; Keep body 75 under separated resilient bodies 76 effects, to be in released state; Output shaft 66 is through output gear 82; Gear wheel drives wheel hub 2 and rotates, thereby realizes that wheel hub drives.
Referring to Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 18; Be in when surmounting mode of operation at two retaining driven gears 64 and cam 67; Pushing body 73 is in released state with keeping body 75, and guide rail 74 is arranged in the sliding tray 73a and the chute 75a that keeps body 75 of pushing body 73 simultaneously, like a state among Figure 18.For time shift of the output shaft 66 with two-speed driven gear 64 rotates in synchronization when power is turned plunger solenoid 71, solenoid plunger 71 through the lever 71a promote conversion means 73 moves the pressing member, the pressing member 73 to overcome the separation of the elastic force of the elastic member 76 close to the holder body 75, the two opposite ends of the ratchet teeth formed on the tip surface of the working tooth local contact, the formation of the state in Figure 18 b; holding body 75 in its own chutes 75a and restrictions rail 74 with pusher 73 moves and overcome return the elastic force of the elastic body 78 push rod 72 moves the wedge, the wedge element 91 spherical toggle lever 72 under the action of the output shaft 66 along the radial outward movement of the lever mechanism the elastic member 87 and the action of the control member 69, the input lever 88 and the toggle member 91 contacts the spherical, spherical slide element 91 via a lever mechanism of the control lever 88 the output side rotational member 69, thereby enabling the second block from the 64 and the cam gear 67 of the frictional connection, to the output shaft 66 with two-speed driven gear 64 rotates in synchronization purposes.After keeping body 75 getaways 74; Keep body 75 under tapered shaft 72 reaction force acts; Keep body 75 to form complete the contact with the drive side that pushing body 73 matches; Corresponding maintenance body 75 rotates to an angle by direction initialization; Form the c state among Figure 18, keep body or continue moving with pushing body 73.Because the smooth section that the work lozenges of tapered shaft 72 is provided with, so two retaining driven gears 64 continue to be in the frictional connection state with cam 67.At this moment; Turn-off the power supply of push rod electromagnet 71; Push rod electromagnet 71 dead electricity push rods withdraw from; Pushing body 73 withdraws from push rod under separated resilient bodies 76 effects; Pushing body 73 is connected with keeping the disengagement of the contacted tooth of body 75 portion; Keep body 75 under the effect of return elastomer 78, to move with tapered shaft 72; After keeping body 75 front end tooth and the leader of guide rail 74 contact; Keep body 75 to rotate once more by direction initialization; Guide portion tap up to guide rail 74 holds maintenance body 75 working flank roots; Form the d state among Figure 18, and stop that with this maintenance body 75 withdraws from, keep the friction connection status to keep two retaining driven gears 64 and cam 67.Because sliding tray 73a is positioned at the root at pushing body 73 any tooth driving surface back sides, chute 75a is positioned at the driving surface middle part that keeps body 75 respective teeth, and at this moment, the total angle that maintenance body 75 turns over is greater than pairing angle of tooth of end face tooth.When needs return to two retaining driven gears 64 and cam 67 to surmount duty; Connect push rod electromagnet 71 power supplys once more; 71 work of push rod electromagnet promote pushing body 73 and move; Keep body 75 and pushing body 73 to overcome the elastic force of separated resilient bodies 76; On the working flank that matches, form local contact once more; This time local contact and last the contacting position more than the tooth of staggering; Form the e state among Figure 18; And the elastic force that keeps body 75 under pushing body 73 promotes, to overcome return elastomer 78 moves with tapered shaft 72; Perhaps overcome and keep the elastic force of elastomer 77 to move towards tapered shaft 72 directions; After keeping body 75 getaways 74; Under tapered shaft 72 reaction force acts; Keep body 75 to form complete the contact with the working flank that pushing body 73 matches; Corresponding maintenance body 75 rotates to an angle by direction initialization once more; Form the f state among Figure 18, keep body 75 or continue moving with pushing body 73.At this moment; Turn-off push rod electromagnet 71 power supplys; Push rod electromagnet 71 dead electricity push rods withdraw from; Pushing body 73 withdraws from push rod under separated resilient bodies 76 effects; Pushing body 73 is connected with keeping the disengagement of the contacted tooth of body 75 portion; Keep body 75 under the effect of return elastic body 78, to move towards pushing body 73 directions with tapered shaft 72; After keeping body 75 front end tooth and the leader of guide rail 74 contact; Keep body 75 to rotate once more by direction initialization; Leader up to guide rail 74 aligns with the chute 75a that keeps body 75; Form the g state among Figure 18; At this moment, maintenance body 75 has totally rotated the angle of two teeth, under the promotion of tapered shaft 72; Keep body 75 to withdraw from along guide rail 74; Return to a state among Figure 18, corresponding function unit 69 rotates towards aforementioned opposite sense under elastic element 87 effects, and the spherical element 91 of stirring is under the leverage effect; Along tapered shaft 72 driving surfaces rollback radially, break away from the frictional connection states and return to and surmount state until two retaining driven gears 64 and cam 67.Break away from the whole process that keeps body 75 chute 75a at guide rail 74, because the wedge shape driving surface of tapered shaft 72 is provided with the smooth section of a setpoint distance, therefore, two retaining driven gears 64 remain the frictional connection state with cam 67.
The effect of the set smooth section of tapered shaft 72 is identical among maintenance elastic body 77 among the embodiment 3 and the embodiment 1, is used for during two retaining driven gears 64 and cam 67 frictions, absorbing keeping moving axially of body 75.Obviously, the elastic force of maintenance elastic body 77 must be greater than the elastic force of return elastic body 78.After keeping body 75 getaways 74, under the resilient force that keeps elastic body 77, keep body 75 to form complete the contact with the drive side that pushing body 73 matches.
Though more than combined accompanying drawing to describe embodiment of the present invention, those of ordinary skill in the art also can recognize in the scope to accompanying claims and makes various variations or modification.These modifications and variation are interpreted as within scope of the present invention and intention.
Claims (13)
1. electric wheel hub; Comprise the motor (1) that is coaxially set and the wheel hub (2) of unitized construction; Be mainly used in first semiaxis (3) that is coaxially set and interfixes and second semiaxis (4) of support motor (1) and wheel hub (2); Be used for motor (1) transmission of power is given the gear train assembly of wheel hub (2); Wherein, First semiaxis (3) is captiveed joint to the disk-like structure that the end is provided with second semiaxis (4) green phase; Be formed with the U-shaped space that is used to hold the gear train assembly major part between the disk-like structure of first semiaxis (3) and second semiaxis (4), it is characterized in that: said gear train assembly is provided with power-shift gear box.
2. electric wheel hub according to claim 1; It is characterized in that: said power-shift gear box is the automatically controlled gearshifts of two gears; Comprise the gear wheel shaft (65) and the output shaft (66) that constitute gear train assembly; The bearing rotational support that gear wheel shaft (65) and output shaft (66) pass through two ends respectively is on the disk-like structure of first semiaxis (3) and second semiaxis (4); Gear wheel shaft (65) is driven through the one-level gear transmission by the pivot (11) of motor (1), and output shaft (66) drives wheel hub (2) through the one-level gear transmission and rotates; Gear wheel shaft (65) is gone up a coaxial retaining driving gear (61) and the two retaining driving gears (62) of being fixed with; Output shaft (66) is gone up a coaxial retaining driven gear (63) and the two retaining driven gears (64) of being provided with; One retaining driving gear (61) and a retaining driven gear (63) and two retaining driving gears (62) and the corresponding constant-mesh of two retaining driven gears (64), retaining driven gear (a 63) rotating speed is lower than two retaining driven gear (64) rotating speeds; Be provided with isolator (63a) between a said retaining driven gear (63) and the output shaft (66), output shaft (66) can pass through isolator (63a) by rotational speed such as retaining driven gear (63) drives; Be provided with the controllable over run clutch structure of power operated control between said two retaining driven gears (64) and the output shaft (66); The controllable over run clutch structure is connected with control mechanism through its function unit (69); When controlling the controllable over run clutch structure through control mechanism; By rotational speed such as two retaining driven gear (64) drives, output shaft (66) is in a retaining driven gear (63) and surmounts state output shaft (66) through the controllable over run clutch structure.
3. electric wheel hub according to claim 2; It is characterized in that: said controllable over run clutch structure comprise with two retaining driven gears (64) constitute the overdrive clutch relation cam (67), can with cam (67) several frictional engagement bodies (68) with two retaining driven gears (64) formation frictional connectiones, cam (67) and output shaft (66) form through spline structure dismantled and assembledly captives joint; Said function unit (69) is connected with several frictional engagement bodies (68) simultaneously; Be connected with between function unit (69) and the cam (67) and be used to make cam (67) and two retaining driven gears (64) to keep the elastic component (87) of overdrive clutch state; Function unit (69) rotates and is synchronized with the movement to stir several frictional engagement bodies (68), makes cam (67) and two retaining driven gears (64) form frictional connection through several frictional engagement bodies (68).
4. electric wheel hub according to claim 2 is characterized in that: said control mechanism forms the magnet coil (70) of electromagnetic attraction to function unit (69) for the energising back.
5. electric wheel hub according to claim 2; It is characterized in that: said controlling organization comprises push rod electromagnet (71); And the tapered shaft with wedge shape working face (72) that promotes by push rod electromagnet (71); Tapered shaft (72) is slidingly fitted in the centre bore (66a) that output shaft (66) is provided with; Be connected with the spherical element (91) of stirring on the wedge shape working face of tapered shaft (72); The spherical element (91) of stirring can stretch out from the pipe tap (66b) of output shaft (66); Spherical stirring between element (91) and the control assembly (69) is connected with leverage; Leverage is used for that conversion controling part (69) is amplified in spherical radial displacement of stirring element (91) and circumferentially rotates, so that cam (67) realizes that with two retaining driven gears (64) friction is connected.
6. electric wheel hub according to claim 5; It is characterized in that: said leverage is positioned at function unit (69) one sides; The lever of leverage (88) input end is slidably supported on spherical stirring on the element (91), and the mouth of lever (88) and function unit (69) flexibly connect; The bearing pin (89) that is used for support lever (88) rotation in the leverage is fixedly connected on cam (67), perhaps is fixed on the reaction plate of fixing with output shaft (66) (90).
7. electric wheel hub according to claim 5; It is characterized in that: said function unit (69) inboard is provided with breach; Leverage is arranged in the breach of function unit (69); The lever of leverage (88) input end is slidably supported on spherical stirring on the element (91); The mouth of lever (88) is slidably supported on the shifting shaft (93) of captiveing joint with function unit (69), and the bearing pin (89) that is used for support lever (88) rotation in the leverage is fixedly connected on cam (67) side end face.
8. electric wheel hub according to claim 5; It is characterized in that: also be connected with maintaining body between said push rod electromagnet (71) and the tapered shaft (72); The dead electricity in push rod electromagnet (71) energising back; Maintaining body makes two retaining driven gears (64) and cam (67) from surmounting state exchange to the frictional connection state and keeps, perhaps make two retaining driven gears (64) and cam (67) from the frictional connection state exchange to surmounting state.
(10) according to claim 8, wherein the electric wheel hub, characterized in that: said holding means comprises a sliding fit on the output shaft (66) of the center hole (66a) of the rotary body shaped pressing member (73), push body (73) with the outer end of said pusher electromagnet (71) of the push rod connected to the pressing body (73) through a slide axially outer circumferential groove (73a), the sliding groove (73a) with the output shaft inside fitting ( 66) fixedly connected to a guide rail (74), the pressing body (73) with said wedge-shaped lever (72) is provided between the rotor-shaped holding member (75), holding member (75) and the pusher (73) or a separation between the elastic body (76), holder (75) and the pressing member (73) facing the end surface of the cloth with each other are an even number of ratchet holder (75) with the outer circumferential shaft uniform through and for receiving the rail (74) of runners (75a), the chute (75a) Quantity holder (75) on the end face of the half the number of teeth, holding body (75) through a chute (75a) and rail ( 74) sliding fit on the output shaft (66) of the center hole (66a), the holder (75) on and off the rail (74) after rotating circumferentially; said guide (74) toward the holding member (75) of the end portion is provided with a holding member (75) of the working surface of the ratchet guide portion adapted; said slide groove (73a) in the pusher (73) on the back face of any tooth root, chute (75a) on the holding body ( 75) corresponding to the middle tooth face; said wedge rod (72) has a wedge-shaped working surface smoothing section set distance (72a) or the wedge-shaped lever (72) and the holding member (75) is connected between a holding elastomer (77) to the holding member (75) in its runner (75a) from the rail (74), the second gear driven gear (64) and the cam (67) is always in frictional connection state; the wedge rod ( 72) and the output shaft (66) of the center hole (66a) between the bottom of a return elastic body (78).
10. electric wheel hub according to claim 9 is characterized in that: said separated resilient bodies (76) is any one in cushion, belleville spring, the compression spring; Said return elastic body (78) is any one in cushion, belleville spring, the compression spring; Said maintenance elastic body (77) is any one in cushion, belleville spring, the compression spring.
11. electric wheel hub according to claim 9; It is characterized in that: the push rod front end of said push rod electromagnet (71) also is connected with lever transfer device (71a), and lever transfer device (71a) is used for pushing body (73), maintenance body (75) and the separated resilient bodies (76) of the motion of push rod electromagnet (71) push rod commutation through maintaining body passed to tapered shaft (72).
12. according to any described electric wheel hub of claim in the claim 1～11; It is characterized in that: the pivot (11) of said motor (1) in a tubular form; Motor (1) is fixing through its electric machine casing and first semiaxis (3); Pivot (11) is rotatably connected on first semiaxis (3) bar portion through coaxial bearing, and pivot (11) stretches in the wheel hub (2); Said gear train assembly comprises motor gear (79), gear wheel, and motor gear (79) is fixed on pivot (11) front end, and motor gear (79) is engaged with input gear (80), and input gear (80) is fixed on the gear wheel shaft (65); Gear wheel is fixed on second end cap (22) of wheel hub (2), and in second semiaxis (4) bar portion, the output gear (82) on gear wheel and the output shaft (66) meshes gear wheel through the coaxial bearing rotational support; Said wheel hub (2) also passes through first end cap (21) and coaxial bearing rotational support on pivot (11).
13. electric wheel hub according to claim 12; It is characterized in that: said gear wheel is provided with buffer structure; Comprise gear body (83), cushion collar (84), buffering body (85); Gear body (83) ring set is in second semiaxis (4) bar portion, and gear body (83) is evenly distributed in a plurality of holes; Said buffering body (85) is positioned between gear body (83) and the wheel hub (2); Be extruded with the buffer shaft (85a) that stretches into cushion collar (84) hole on the buffering body (85); Buffering body (85) is captiveed joint with wheel hub (2), and buffering body (85) passes through the coaxial bearing rotational support in second semiaxis (4) bar portion; Said cushion collar (84) is processed by the material with damping performance, and cushion collar (84) is filled between a plurality of hole inwalls on buffer shaft (85a) periphery and the gear body (83).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110182371 CN102303684B (en) | 2011-07-01 | 2011-07-01 | Electric hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110182371 CN102303684B (en) | 2011-07-01 | 2011-07-01 | Electric hub |
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| Publication Number | Publication Date |
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| CN102303684A true CN102303684A (en) | 2012-01-04 |
| CN102303684B CN102303684B (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110182371 Expired - Fee Related CN102303684B (en) | 2011-07-01 | 2011-07-01 | Electric hub |
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| CN (1) | CN102303684B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103840604A (en) * | 2014-03-27 | 2014-06-04 | 李跃岩 | Electric vehicle variable speed drive hub |
| CN104554602A (en) * | 2015-02-03 | 2015-04-29 | 朱幕松 | Bridge-type gear engaging and disengaging brushless hub motor |
| CN105711409A (en) * | 2016-01-27 | 2016-06-29 | 柳超 | Three-gear speed change wheel based on cam gear shifting |
| TWI655116B (en) * | 2017-05-19 | 2019-04-01 | 財團法人工業技術研究院 | A transmission mechanism and one-way assembly thereof |
| CN109693496A (en) * | 2017-10-24 | 2019-04-30 | 湖南捷行科技有限公司 | A kind of wheel hub speed change gear |
| CN112498564A (en) * | 2020-12-16 | 2021-03-16 | 西南大学 | Central transmission sensing variable speed electric drive system |
| CN113665725A (en) * | 2021-09-22 | 2021-11-19 | 浙江创台车业有限公司 | Two-wheel hybrid power motorcycle and one-way transmission mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103840604A (en) * | 2014-03-27 | 2014-06-04 | 李跃岩 | Electric vehicle variable speed drive hub |
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| US11536349B2 (en) | 2017-05-19 | 2022-12-27 | Industrial Technology Research Institute | One-way component of transmission mechanism |
| CN109693496A (en) * | 2017-10-24 | 2019-04-30 | 湖南捷行科技有限公司 | A kind of wheel hub speed change gear |
| CN109693496B (en) * | 2017-10-24 | 2024-01-23 | 广东洛梵狄智能科技有限公司 | Hub speed change device |
| CN112498564A (en) * | 2020-12-16 | 2021-03-16 | 西南大学 | Central transmission sensing variable speed electric drive system |
| CN113665725A (en) * | 2021-09-22 | 2021-11-19 | 浙江创台车业有限公司 | Two-wheel hybrid power motorcycle and one-way transmission mechanism |
| CN113665725B (en) * | 2021-09-22 | 2023-01-10 | 浙江创台车业有限公司 | Two-wheel hybrid power motorcycle and one-way transmission mechanism |
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