CN202213480U - Electric wheel hub - Google Patents
Electric wheel hub Download PDFInfo
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- CN202213480U CN202213480U CN2011202288265U CN201120228826U CN202213480U CN 202213480 U CN202213480 U CN 202213480U CN 2011202288265 U CN2011202288265 U CN 2011202288265U CN 201120228826 U CN201120228826 U CN 201120228826U CN 202213480 U CN202213480 U CN 202213480U
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Abstract
The utility model discloses an electric wheel hub comprising a motor, a wheel hub with a combined structure, a first half shaft, a second half shaft and a gear transmission system, wherein the motor and the wheel hub are arranged coaxially; the first half shaft and the second half shaft are mainly used for supporting a coaxial line of the motor and the wheel hub and are fixed mutually; the gear transmission system is used for transferring the power of the motor to the wheel hub; the first half shaft and the second half shaft are fixedly connected through disc-shaped structures arranged at opposite end parts; a U-shaped space used for containing main parts of the gear transmission system is formed between the disc-shaped structures of the first half shaft and the second half shaft; and the gear transmission system is provided with a two-gear electric control gear shifting device. Preferably, the gear shifting device mainly comprises a push rod electromagnet, a controllable overrunning clutching structure and a control mechanism, wherein the control mechanism is provided with a retaining mechanism used for converting the electric wheel hub from a first gear to a second gear and retaining the second gear or converting the second gear to the first gear after the push rod electromagnet loses power after getting power transiently. The electric wheel hub has the beneficial effects of capability of realizing speed change through gear shifting, low energy consumption, high response speed and long service life.
Description
Technical field
The utility model 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 utility model just provides a kind of electric wheel hub with shift speed change function.Second purpose of the utility model provides a kind of electric wheel hub of long service life.
For realizing above-mentioned purpose, the utility model 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 utility model.
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, and gear wheel shaft is driven through the one-level gear transmission by the pivot of motor, and output shaft rotates through one-level gear transmission drive wheel hub; 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 with wedge shape driving surface that promotes by the push rod electromagnet, tapered shaft is slidingly fitted in the centre hole that output shaft is provided with, and is 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, and 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.
Optimized technical scheme further; Said maintaining body comprises the rotational-like pushing body in the centre hole that is slidingly fitted in output shaft, pushes external end and is connected with the push rod of said push rod electromagnet, pushes and external week axially is penetrated with sliding tray; Be combined with the guide rail of captiveing joint in the sliding tray with output shaft; Be provided with rotational-like maintenance body between pushing body and the said tapered shaft, keep perhaps being provided with separated resilient bodies between body and the pushing body, be evenly equipped with the even number ratchet that cooperatively interacts on the end face in opposite directions of maintenance body and pushing body; Keep the periphery of body to be evenly equipped with the chute that axially runs through and be used to admit guide rail; Chute quantity is keep body upper surface number of teeth amount half the, keeps body to be slidingly fitted in through chute and guide rail in the centre hole of output shaft, keeps body behind getaway, can circumferentially rotate; Said guide rail is provided with the leader that adapts with the driving surface that keeps the ratchet of body towards the end that keeps body; Said sliding tray is positioned at the root at any tooth driving surface of the pushing body back side, and chute is positioned at the driving surface middle part that keeps the body respective teeth; The wedge shape driving surface of said tapered shaft is provided with the smooth section of a setpoint distance or between tapered shaft and maintenance body, is connected with the maintenance elastic body, so that keep body behind its chute getaway, two retaining driven gears and cam are in the frictional connection state all the time; Between the centre hole bottom of tapered shaft and output shaft, be provided with the return elastic body.
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 switching-over 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 utility model.
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 utility model 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 utility model embodiment 1.
Fig. 2 is the utility model gear wheel structural representation.
The left view of Fig. 3 the utility model Fig. 2.
Fig. 4 is the right elevation of the utility model 2.
The structural representation of Fig. 5 the utility model embodiment 2.
Fig. 6 is the A portion enlarged drawing among the utility model Fig. 5.
Fig. 7 is the B-B cutaway view among the utility model Fig. 6.
Fig. 8 is the C-C cutaway view among the utility model Fig. 6.
Fig. 9 is the D-D cutaway view among the utility model Fig. 8.
Figure 10 is the structural representation among the utility model embodiment 3.
Figure 11 is the E portion enlarged drawing among the utility model Figure 10.
Figure 12 is the structural representation of the utility model embodiment 4.
Figure 13 is the F portion enlarged drawing among the utility model Figure 12.
Figure 14 is the G-G cutaway view among the utility model Figure 13.
Figure 15 is the structural representation of the utility model embodiment 5.
Figure 16 is the H portion enlarged drawing among the utility model Figure 12.
Figure 17 is the L-L cutaway view among the utility model Figure 13.
Figure 18 is the maintaining body state change map in the utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described, but therefore the utility model is not limited among the described scope of embodiments.
Embodiment 1Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4; A kind of electric wheel hub; Comprise the wheel hub 2 of the motor that is coaxially set 1 and unitized construction, first semiaxis 3 that is coaxially set and interfixes that is mainly used in support motor 1 and wheel hub 2 and second semiaxis 4, 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, 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 3 and second semiaxis 4, and 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 constitute the overdrive clutch relation cam 67, can form several roller shape frictional engagement bodies 68 of frictional connectiones with cam 67 and two retaining driven gears 64, 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 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 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.
Said control mechanism forms the magnet coil 70 of electromagnetic attraction to function unit 69 for the energising back.
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 2Referring to Fig. 5, Fig. 6; Said control mechanism comprises push rod electromagnet 71; And the tapered shaft with wedge shape driving surface 72 that promotes by push rod electromagnet 71, tapered shaft 72 is slidingly fitted among the centre hole 66a that output shaft 66 is provided with, and is connected with the spherical element 91 of stirring on the wedge shape driving surface 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 function unit 69 is connected with leverage, and leverage is used for that the spherical radial displacement of stirring element 91 is amplified conversion controling part 69 and circumferentially rotates, so that cam 67 and two retaining driven gears 64 are realized 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.
Said maintaining body comprises the rotational-like pushing body 73 in lock tube 92 endoporus in the centre hole 66a that is slidingly fitted in output shaft 66; Pushing body 73 outer ends are by the promotion of said push rod electromagnet 71; Pushing body 73 peripheries are evenly equipped with 4 and axially are penetrated with sliding tray 73a; Cooperation all has guide rail 74 in the sliding tray 73a, and guide rail 74 is located at lock tube 92 inwalls, and guide rail 74 is captiveed joint with output shaft 66 through lock tube 92; Be provided with rotational-like maintenance body 75 between pushing body 73 and the said tapered shaft 72; Keep being provided with separated resilient bodies 76 between body 75 and the pushing body 73, be evenly equipped with 8 ratchets of even number that cooperatively interact on the end face in opposite directions of maintenance body 75 and pushing body 73, keep the periphery of body 75 to be evenly equipped with 4 chute 75a that axially run through and be used to admit guide rail 74; Keep body 75 to be slidingly fitted in through chute 75a and guide rail 74 in the centre hole 66a of output shaft 66, keep body 75 behind getaway 74, can circumferentially rotate; Said guide rail 74 is provided with the leader that adapts with the driving surface that keeps the ratchet of body 75 towards the end that keeps body 75; Said sliding tray 73a is positioned at the root at pushing body 73 any tooth driving surface back sides, and chute 75a is positioned at the driving surface middle part that keeps body 75 respective teeth; The wedge shape driving surface of said tapered shaft 72 is provided with the smooth section 72a of a setpoint distance, so that 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; Between the centre hole 66a bottom of tapered shaft 72 and output shaft 66, be provided with return elastic body 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, and reaction plate 90 is fixedly connected on the output shaft 66 through spline removably, and 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 switching-over 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, and 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 concerns with two retaining driven gears, 64 formation overdrive clutch, several Wedge-type frictional engagement bodies 68 that can form frictional connectiones with cam 67 and two retaining driven gears 64; Wedge-type frictional engagement body 68 is by first retainer 93 and 94 controls of second retainer, and first retainer 93 is positioned at second retainer, 94 inside, and first retainer 93 is captiveed joint with cam 67; Second retainer, 94 1 end captive joints are by control panel 95; The spring steel band that second retainer 94 is provided with between forming function unit 69, the first retainers 93 and cam 67 is captiveed joint with control panel 95 constitutes the elastic component 87 of controllable overrunning clutch, and 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 processBeing example with embodiment 2 below carries out brief description to the working process of the utility model.
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 one on the gear wheel shaft 65 retaining driving gear 61, two retaining driving gears 62 rotate with gear wheel shaft 65, corresponding and a retaining driving gear 61, two retaining driving gears 62 a retaining driven gear 63 and the two retaining driven gears 64 of constant-meshes respectively rotate, a 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 radially retracts to minimum position under elastic component 87, function unit 69 and leverage effect, and 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, maintenance body 75 are in released state under separated resilient bodies 76 effects, output shaft 66 drives wheel hub 2 through output gear 82, gear wheel and rotates, thereby the realization 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.This moment is if need to shift gears when making output shaft 66 and two retaining driven gear 64 rotations synchronously; Connect push rod electromagnet 71 power supplys; Push rod electromagnet 71 promotes pushing body 73 through lever transfer device 71a and moves; The elastic force that pushing body 73 overcomes separated resilient bodies 76 is near keeping body 75, the two in opposite directions the ratchet of end form local contact on the drive side top, form the b state among Figure 18; Keep body 75 to move with pushing body 73 down and the elastic force promotion tapered shaft 72 that overcomes return elastic body 78 moves in himself chute 75a and guide rail 74 restrictions; Spherically stir element 91 output shaft 66 radially outward moves in the effect lower edge of tapered shaft 72; Leverage is under the effect of elastic element 87 and function unit 69; The input end of lever 88 contacts with the spherical element 91 of stirring; Spherical lever 88 mouths of element 91 through leverage of stirring rotate function unit 69, thereby and then realize the frictional connection of two retaining driven gears 64 and cam 67, reach the purposes that output shaft 66 and two retaining driven gears 64 rotate synchronously.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, forms the c state among Figure 18, keeps 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 down in separated resilient bodies 76 effect, and pushing body 73 is connected with keeping the disengagement of the contacted tooth of body 75 portion, and maintenance body 75 moves with tapered shaft 72 under the effect of return elastic body 78; After keeping body 75 front end tooth and the leader of guide rail 74 contact; Keep body 75 to rotate once more, hold up to the guide portion tap of guide rail 74 and keep body 75 drive side roots, form the d state among Figure 18 by direction initialization; And stop with this and to keep body 75 to withdraw from, keep the frictional connection states 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 mode of operation, connect push rod electromagnet 71 power supplys once more, 71 work of push rod electromagnet promote pushing bodies 73 and move; Keep body 75 and pushing body 73 to overcome the elastic force of separated resilient bodies 76; On the drive side that matches, form local contact once more, this time local contact and last the contacting above position of a tooth of staggering, the e state among formation Figure 18; And the elastic force that keeps body 75 under pushing body 73 promotes, to overcome return elastic body 78 moves with tapered shaft 72; The elastic force that perhaps overcomes maintenance elastic body 77 moves 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 drive side that pushing body 73 matches; Corresponding maintenance body 75 rotates to an angle by direction initialization once more, forms the f state among Figure 18, keeps 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 down in separated resilient bodies 76 effect, pushing body 73 with keep the contacted tooth of body 75 portion to throw off being connected, maintenance body 75 pushes body 73 directions with tapered shaft 72 courts and moves under the effect of return elastic body 78; 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, align up to the leader of guide rail 74 and the chute 75a of maintenance body 75; Form the g state among Figure 18, at this moment, keep body 75 totally to rotate 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; The spherical element 91 of stirring along tapered shaft 72 driving surfaces rollback radially, breaks away from the frictional connection states and returns to and surmount state until two retaining driven gears 64 and cam 67 under the leverage effect.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 the embodiment of the utility model, those of ordinary skill in the art also can recognize in the scope to accompanying claims and makes various variations or modification.It is within the scope and intention of the utility model that these modifications and variation are interpreted as.
Claims (13)
1. electric wheel hub; Comprise the motor (1) that is coaxially set and unitized construction wheel hub (2), be mainly used in support motor (1) and wheel hub (2) first semiaxis (3) that is coaxially set and interfixes and second semiaxis (4), 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 control mechanism comprises push rod electromagnet (71); And the tapered shaft with wedge shape driving surface (72) that promotes by push rod electromagnet (71); Tapered shaft (72) is slidingly fitted in the centre hole (66a) that output shaft (66) is provided with; Be connected with the spherical element (91) of stirring on the wedge shape driving surface of tapered shaft (72), the spherical element (91) of stirring can stretch out from the pipe tap (66b) of output shaft (66), and spherical stirring between element (91) and the function unit (69) is connected with leverage; Leverage is used for that the spherical radial displacement of stirring element (91) is amplified conversion controling part (69) and circumferentially rotates, so that cam (67) is realized frictional connection with two retaining driven gears (64).
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.
9. electric wheel hub according to claim 8; It is characterized in that: said maintaining body comprises the rotational-like pushing body (73) in the centre hole (66a) that is slidingly fitted in output shaft (66); Pushing body (73) outer end is connected with the push rod of said push rod electromagnet (71); Pushing body (73) peripheral, axial is penetrated with sliding tray (73a); Be combined with the guide rail (74) of captiveing joint in the sliding tray (73a) with output shaft (66); Be provided with rotational-like maintenance body (75) between pushing body (73) and the said tapered shaft (72), keep perhaps being provided with separated resilient bodies (76) between body (75) and the pushing body (73), be evenly equipped with the even number ratchet that cooperatively interacts on the end face in opposite directions of maintenance body (75) and pushing body (73); Keep the periphery of body (75) to be evenly equipped with the chute (75a) that axially runs through and be used to admit guide rail (74); Chute (75a) quantity is keep body (75) upper surface number of teeth amount half the, keeps body (75) to be slidingly fitted in through chute (75a) and guide rail (74) in the centre hole (66a) of output shaft (66), keeps body (75) behind getaway (74), can circumferentially rotate; Said guide rail (74) is provided with the leader that adapts with the driving surface that keeps the ratchet of body (75) towards the end that keeps body (75); Said sliding tray (73a) is positioned at pushing body (73) root at the tooth driving surface back side arbitrarily, and chute (75a) is positioned at the driving surface middle part that keeps body (75) respective teeth; The wedge shape driving surface of said tapered shaft (72) is provided with the smooth section (72a) of a setpoint distance or between tapered shaft (72) and maintenance body (75), is connected with and keeps elastic body (77); So that 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); Between centre hole (66a) bottom of tapered shaft (72) and output shaft (66), be provided with 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 switching-over 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 |
|---|---|---|---|
| CN2011202288265U CN202213480U (en) | 2011-07-01 | 2011-07-01 | Electric wheel hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202288265U CN202213480U (en) | 2011-07-01 | 2011-07-01 | Electric wheel hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202213480U true CN202213480U (en) | 2012-05-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202288265U Withdrawn - After Issue CN202213480U (en) | 2011-07-01 | 2011-07-01 | Electric wheel hub |
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| Country | Link |
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| CN (1) | CN202213480U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303684A (en) * | 2011-07-01 | 2012-01-04 | 重庆阿尔迪机电技术开发有限公司 | Electric hub |
| CN103470749A (en) * | 2013-09-06 | 2013-12-25 | 浙江德孚力汽车变速箱有限公司 | Fault protection device applicable to cone ring type continuously variable transmission |
| CN105119421A (en) * | 2015-08-19 | 2015-12-02 | 重庆茂田机械有限公司 | Transmission structure applied to wheelchair motor |
| US20160347412A1 (en) * | 2015-05-29 | 2016-12-01 | Shimano Inc. | Internal transmission |
| CN108266525A (en) * | 2017-01-04 | 2018-07-10 | 李激初 | Internal hub transmission electric operation mechanism |
| CN111168639A (en) * | 2020-01-07 | 2020-05-19 | 北京可以科技有限公司 | Robot wheel and robot |
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2011
- 2011-07-01 CN CN2011202288265U patent/CN202213480U/en not_active Withdrawn - After Issue
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303684A (en) * | 2011-07-01 | 2012-01-04 | 重庆阿尔迪机电技术开发有限公司 | Electric hub |
| CN102303684B (en) * | 2011-07-01 | 2013-06-12 | 重庆阿尔迪机电技术开发有限公司 | Electric hub |
| CN103470749A (en) * | 2013-09-06 | 2013-12-25 | 浙江德孚力汽车变速箱有限公司 | Fault protection device applicable to cone ring type continuously variable transmission |
| CN103470749B (en) * | 2013-09-06 | 2015-08-26 | 浙江德孚力汽车变速箱有限公司 | Be applicable to the failure protecting device of conical ring formula stepless speed variator |
| CN106184599A (en) * | 2015-05-29 | 2016-12-07 | 株式会社岛野 | Epicyclic gear |
| US20160347412A1 (en) * | 2015-05-29 | 2016-12-01 | Shimano Inc. | Internal transmission |
| US10569835B2 (en) | 2015-05-29 | 2020-02-25 | Shimano Inc. | Internal transmission |
| CN105119421A (en) * | 2015-08-19 | 2015-12-02 | 重庆茂田机械有限公司 | Transmission structure applied to wheelchair motor |
| CN105119421B (en) * | 2015-08-19 | 2018-01-02 | 重庆茂田机械有限公司 | Drive mechanism for wheel chair motor |
| CN108266525A (en) * | 2017-01-04 | 2018-07-10 | 李激初 | Internal hub transmission electric operation mechanism |
| CN108266525B (en) * | 2017-01-04 | 2023-10-27 | 李激初 | Electric control mechanism of transmission in hub |
| CN111168639A (en) * | 2020-01-07 | 2020-05-19 | 北京可以科技有限公司 | Robot wheel and robot |
| CN111168639B (en) * | 2020-01-07 | 2021-12-10 | 北京可以科技有限公司 | Robot wheel and robot |
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