CN201099341Y

CN201099341Y - Speed changing electric driven hub

Info

Publication number: CN201099341Y
Application number: CNU2007201294629U
Authority: CN
Inventors: 蔡贵席
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-24
Filing date: 2007-08-08
Publication date: 2008-08-13
Anticipated expiration: 2017-08-08

Abstract

The utility model belongs to the technology field of wheels, which relates to a speed changing electric hub. The utility model comprises a hub ring arranged at the inner part, a motor and a box body are arranged in the hub ring, a first hollow axle extending out of the hub ring is fixed on the motor, and an input axle which is connected with a motor axle in a driving way and a hollow output axle connected with the hub ring in a driving way are rotationally arranged in the box body. A plurality of driven gears are rotationally arranged on the hollow output axle, and driving gears which enages with the driven gears are fixed on the input axle; the driven gear is provided with inner teeth, a stopper movable groove is processed on the hollow output axle, a tilting stopper is arranged in the stopper movable groove, and a torsion spring which enables one end of the stopper to tilt to be clipped on the inner teeth is arranged on the stopper; a sliding piece which can jack up the tilting end of the stopper is arranged in the axle hole of the hollow output axle, the sliding piece is equipped with an inner bolt hole and a guiding rod hole, a bolt which can rotate in a second hollow axle is arranged in the inner bolt hole, the bolt is connected with a stepping motor fixed on the second hollow axle in a driving way, a guiding rod is movably arranged in the guiding rod hole, and the guiding rod is arranged on the second hollow axle.

Description

Variable-speed electric wheel hub

Technical field

The utility model belongs to the wheel technical field.

Background technology

Existing Variable-speed electric wheel hub mainly inputs to the voltage of motor by adjusting, change rotating speed of motor and carry out speed change.When but motor was adjusted to low-speed running, the power of its output is also corresponding to diminish, make battery-driven car in the upward slope process unable.If a change-speed box is installed in wheel hub, one because speed changer structure is big, and can't be provided with because of the finite volume of wheel hub.Two because change-speed box need carry out the speed change adjusting, and the export structure of its speed change regulating control mechanism can't solve.Chinese patent publication number CN2879513 discloses a kind of Electric Transmission Hub, and its step by-step variable gear and motor are located in the hub circle, and step by-step variable gear is fixed on the end of motor, and the backguy rope drives speed change to multipole transmission system in the hub circle by stretching to from hollow shaft.Because need realize speed change with the distance of manual control backguy rope pulling, the sensitivity of speed change is not high, and is reliable inadequately.

The utility model content

The purpose of this utility model is to provide a kind of speed change regulating control simple, can realize the Variable-speed electric wheel hub that the multi-stage mechanical speed change is regulated.

For realizing the purpose of this utility model, the utility model Variable-speed electric wheel hub comprises the hub circle, and first end face of hub circle and the central authorities of second end face are respectively equipped with first axis hole and second axis hole; Be provided with motor in the described hub circle, be fixed with on the described motor can be in described first axis hole first hollow shaft in relative rotation, power lead extends out from first hollow shaft; Be fixed with casing on the described motor, in described second axis hole, be provided with relatively turnable second hollow shaft; Rotate in the described casing and be provided with hollow output shaft and input shaft, described input shaft and motor shaft driving coupling, described hollow output shaft and hub circle driving coupling; Described hollow output shaft is provided with at least two driven gears, and driven gear can rotate on hollow output shaft, the corresponding driving gear that is fixed with the driven gear engaged transmission on the described input shaft; Described driven gear is provided with internal tooth, on sheathed this section hollow output shaft of each driven gear, the group loose slot is arranged, be provided with group in the group loose slot, group can be in the group loose slot tilting, group is provided with to act on and makes the perk of one end be stuck in torsion spring on the internal tooth on the hollow output shaft; But be provided with the jack-up group in the axis hole of described hollow output shaft and stick up sliding part into end.Described sliding part is provided with inner bolt hole and pilot bar hole, the axially parallel of the axial and axis hole in described inner bolt hole and pilot bar hole, be provided with the screw rod that can in second hollow shaft, rotate in the described inner bolt hole, described screw rod and the stepping motor driving coupling that is fixed on second hollow shaft, described pilot bar is movably equipped with pilot bar in the hole, and pilot bar is located on second hollow shaft.

First hollow shaft and second hollow shaft extend out to outside, hub circle two ends, fix first hollow shaft and second hollow shaft after because first hollow shaft and motor are fixed together, motor and casing are fixed together, and are fixed so motor is relative with casing.The motor energized, motor shaft produces rotation, rotates thereby drive input shaft, and a plurality of driving gears of input shaft rotate thereupon, and the driven gear that is engaged with is rotation thereupon also.Under the initial condition, the sliding part in the axis hole of hollow output shaft sticks up each group into end jack-up, and the group other end sticks up into the internal tooth with cooresponding driven gear and breaks away from, and driven gear rotates around hollow output shaft, and be neutral gear this moment.

When sliding part leaves on the hollow output shaft group on certain fragment position, group under the effect of torsion spring its stick up end stick up in the axis hole into, its perk one end snaps in the internal tooth of cooresponding driven gear, driven gear drives hollow output shaft and rotates, and hollow output shaft driving center circle rotates around first hollow shaft and second hollow shaft.When sliding part left on the hollow output shaft the locational group of multistage, this moment, hollow output shaft was to be driven by the fastest driven gear of rotating speed.By driving gear and the driven gear that many group sizes have nothing in common with each other is set, the position of adjustment slide in axis hole, make sliding part touch the group that is arranged on each section of hollow output shaft respectively, the pairing driven gear of group is combined with hollow output shaft realize speed governing, can realize that multi-change speed is regulated and then the rotating speed of adjusting hub circle.

When the step motor drive screw rod rotated, pilot bar can play the effect that prevents that sliding part from rotating, and like this under the screw thread fit on inner bolt hole and the screw rod, sliding part will be along the moving axially of screw rod, and then axially move in axis hole.Sliding part moves to the residing position of each driven gear, touches the group that is arranged on each section of hollow output shaft respectively, and the pairing driven gear of group is combined with hollow output shaft.The number of turns of rotating by the control step motor, thus the control sliding part in the distance that moves on the screw rod promptly in the distance that in axis hole, moves, and then realize the shift speed governing.

For realizing same purpose of the present utility model, the utility model Variable-speed electric wheel hub comprises the hub circle, and first end face of hub circle and the central authorities of second end face are respectively equipped with first axis hole and second axis hole; Be provided with motor in the described hub circle, be fixed with on the described motor can be in described first axis hole first hollow shaft in relative rotation, power lead extends out from first hollow shaft; Be fixed with casing on the described motor, in described second axis hole, be provided with relatively turnable second hollow shaft; Rotate in the described casing and be provided with hollow output shaft and input shaft, described input shaft and motor shaft driving coupling, described hollow output shaft and hub circle driving coupling; Described hollow output shaft is provided with at least two driven gears, and driven gear can rotate on hollow output shaft, the corresponding driving gear that is fixed with the driven gear engaged transmission on the described input shaft; Described driven gear is provided with internal tooth, on sheathed this section hollow output shaft of each driven gear, the group loose slot is arranged, be provided with group in the group loose slot, group can be in the group loose slot tilting, group is provided with to act on and makes the perk of one end be stuck in torsion spring on the internal tooth on the hollow output shaft; But be provided with the jack-up group in the axis hole of described hollow output shaft and stick up sliding part into end; Described sliding part is provided with screw mandrel, the axially parallel of the axial and axis hole of screw mandrel, described screw mandrel is provided with the inner bolt hole gear that in one plane rotates, inner bolt hole gear and the stepping motor driving coupling that is fixed on second hollow shaft, described screw mandrel is provided with axial guide chute, and described second hollow shaft is provided with the locating piece that stretches in the guide chute.

When stepping motor output shaft transmission inner bolt hole gear rotates, guide chute and locating piece match and can prevent that screw mandrel and inner bolt hole gear from rotating together, under the cooperation of the screw of screw thread on the screw mandrel and inner bolt hole gear, described screw mandrel and sliding part axially move in axis hole like this.Sliding part moves to the residing position of each driven gear, touches the group that is arranged on each section of hollow output shaft respectively, and the pairing driven gear of group is combined with hollow output shaft.By the number of turns of control step motor rotation, thus the distance that the control sliding part moves in axis hole, and then realize the shift speed governing.

For realizing same purpose of the present utility model, the utility model Variable-speed electric wheel hub comprises the hub circle, and first end face of hub circle and the central authorities of second end face are respectively equipped with first axis hole and second axis hole; Be provided with motor in the described hub circle, be fixed with on the described motor can be in described first axis hole first hollow shaft in relative rotation, power lead extends out from first hollow shaft; Be fixed with casing on the described motor, in described second axis hole, be provided with relatively turnable second hollow shaft; Rotate in the described casing and be provided with hollow output shaft and input shaft, described input shaft and motor shaft driving coupling, described hollow output shaft and hub circle driving coupling; Described hollow output shaft is provided with at least two driven gears, and driven gear can rotate on hollow output shaft, the corresponding driving gear that is fixed with the driven gear engaged transmission on the described input shaft; Described driven gear is provided with internal tooth, on sheathed this section hollow output shaft of each driven gear, the group loose slot is arranged, be provided with group in the group loose slot, group can be in the group loose slot tilting, group is provided with to act on and makes the perk of one end be stuck in torsion spring on the internal tooth on the hollow output shaft; But be provided with the jack-up group in the axis hole of described hollow output shaft and stick up sliding part into end; Described sliding part is provided with pilot hole, the axially parallel of the axial and axis hole of described pilot hole, be provided with the interior hollow shaft that is fixed on second hollow shaft in the described pilot hole, the hollow shaft sidewall is provided with guide groove in described, be provided with fastener in the described guide groove, the fastener two ends withstand on the sliding part, be provided with an end in described second hollow shaft and withstand on push rod on the fastener, the described push rod other end withstands on an end of the lever on second hollow shaft, the other end of described lever is connected with the backguy rope, and described sliding part is provided with and makes it keep the retracing spring that ejects in hollow output shaft.

Under the normal condition, sliding part withstands on sticking up into end of each group, and be neutral gear this moment.Pulling backguy rope, the lever tilting can be pushed push rod, and push rod is pushed the shake-up fastener, and fastener drives sliding part and endwisely slips simultaneously on interior hollow shaft, promptly axially moves in axis hole.Under the cooperatively interacting of push rod and retracing spring, can make sliding part move to the residing position of each driven gear in conjunction with the backguy rope, touch the group that is arranged on each section of hollow output shaft respectively, the pairing driven gear of group is combined with hollow output shaft.By putting the backguy rope, just can make from three driven gears and link with hollow output shaft successively like this, realize the shift speed governing.When the application force that discharges on the backguy rope, sliding part outwards ejects again under the elastic force effect of retracing spring automatically, realizes that speed governing resets.

The utility model speed change regulating control is simple, and the position of adjustment slide is regulated to realize the multi-stage mechanical speed change easily.

Description of drawings

Fig. 1 is the three-dimensional assembly structure figure of first kind of embodiment of the utility model Variable-speed electric wheel hub;

Fig. 2 is stepping motor, screw gear case, screw gear, second hollow shaft, screw rod, pilot bar, sliding part, hollow output shaft, torsion spring, group, group axle, driven gear, driving gear, the input shaft among Fig. 1, the three-dimensional assembly structure figure of jump ring;

Fig. 3 is the three-dimensional structure diagram of hollow shaft output shaft;

Fig. 4 is the three-dimensional structure diagram of group;

The three-dimensional structure diagram of the sliding part of first kind of embodiment of Fig. 5 the utility model Electric Transmission Hub;

Fig. 6 is the topology view of first kind of embodiment of the utility model Electric Transmission Hub;

Fig. 7 is the A-A face sectional structure chart among Fig. 6;

Fig. 8 is the three-dimensional assembly structure figure of second kind of embodiment of the utility model Variable-speed electric wheel hub;

Fig. 9 is stepping motor, screw mandrel support, inner bolt hole gear, second hollow shaft, screw mandrel, sliding part, hollow output shaft, torsion spring, group, group axle, driven gear, driving gear, the input shaft among Fig. 8, the three-dimensional assembly structure figure of jump ring;

Figure 10 is the three-dimensional structure diagram of screw mandrel support;

Figure 11 is the combination three-dimensional structure diagram of screw mandrel and sliding part;

Figure 12 is the three-dimensional structure diagram of inner bolt hole gear;

Figure 13 is the topology view of second kind of embodiment of the utility model Electric Transmission Hub;

Figure 14 is the B-B face sectional structure chart among Figure 13;

Figure 15 is the three-dimensional assembly structure figure of the third embodiment of the utility model Variable-speed electric wheel hub;

Figure 16 is the topology view of the third embodiment of the utility model Variable-speed electric wheel hub;

Figure 17 is the C-C face sectional structure chart among Figure 16.

The specific embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the utility model Variable-speed electric wheel hub is described in further detail.

As shown in the figure, the utility model Variable-speed electric wheel hub comprises hub circle 1, first end face 2, motor 3, second end face 4, hollow output shaft 5, input shaft 6, rotor 7, first axis hole 8, driven gear 9, driving gear 10, internal tooth 11, group loose slot 12, group 13, torsion spring 14, axis hole 15, sliding part 16, inclined-plane 17, annular slope 18, second axis hole 19, first hollow shaft 20, casing 21, screw rod 22, stepping motor 23, pilot bar 24, inner bolt hole 25, pilot bar hole 26, screw mandrel support 27, inner bolt hole gear 28, screw mandrel 29, push rod 30, lever 31, guide chute 32, locating piece 33, second hollow shaft 34, driver blade 35, groove 36, projection 37, damping spring 38, Wheel 39, motor cover 40, motor shaft bearing 41, hollow output shaft bearing 42, bearing of input shaft 43, input shaft gear 45, motor shaft 46, generator shaft gear 47, brake disc 48, the first hollow shaft bearing 49, the second hollow shaft bearing 50, screw-bearing 51, hollow output shaft axis hole 52, screw gear case 53, screw gear 54, group axle 55, jump ring 56, group axis hole 57, torsion spring hole 58, power lead 59, input shaft axis hole 60, assembly opening 61, nut 62, pilot hole 63, interior hollow shaft 64, guide groove 65, fastener 66, backguy rope 67, retracing spring 68, lever dolly 69.

Embodiment 1

As shown in Fig. 1, Fig. 6, Fig. 7, hub circle 1 two ends are first end face 2 and second end face 4, and wherein first end face 2 is integrated with hub circle 1, second end face 4 by screw retention on hub circle 1.First end face 2 is provided with can be with the brake disc 48 of its rotation.Hub circle 1 is provided with Wheel 39, can be used to lay tire.The central authorities of described first end face 2 and second end face 4 are respectively equipped with first axis hole 8 and second axis hole 19.Be provided with motor 3 in the described hub circle 1, be fixed with on the described motor 3 can be in described first axis hole 8 first hollow shaft 20 in relative rotation, power lead 59 extends out from first hollow shaft 20.Be provided with the first hollow shaft bearing 49 between first axis hole 8 and first hollow shaft 20, so as first hollow shaft 20 can be in first axis hole 8 high speed rotating.Be fixed with casing 21 on the described motor 3, in described second axis hole 19, be provided with relatively turnable second hollow shaft 34.Be provided with the second hollow shaft bearing 50 between second axis hole 19 and second hollow shaft 34.So that second hollow shaft 34 can be in second axis hole 19 high speed rotating.

Correspondence is provided with input shaft axis hole 60 and hollow output shaft axis hole 52 on 21 two sidewalls of described casing, rotates respectively in described hollow output shaft axis hole 52 and the input shaft axis hole 60 and is provided with hollow output shaft 5 and input shaft 6.Also be respectively equipped with hollow output shaft bearing 42 and bearing of input shaft 43 in described input shaft axis hole 60 and the hollow output shaft axis hole 52, so that hollow output shaft 5 and input shaft 6 high speed rotating in hollow output shaft axis hole 52 and input shaft axis hole 60 respectively.Described motor 3 is provided with motor shaft bearing 41, and motor shaft 46 is fixedly connected on the rotor 7 by nut, and motor shaft 46 is located in the motor shaft bearing 41.Motor shaft 46 outer ends are provided with generator shaft gear 47.The end that input shaft 6 stretches out input shaft axis hole 60 is provided with input shaft gear 45, input shaft gear 45 and generator shaft gear 47 engagements.The axial line of the axial line of described hollow output shaft 5 and second hollow shaft 34 is in same axis, hollow output shaft 5 is stretched out an end and described second end face, 4 driving coupling of hollow output shaft axis hole 52, and described second hollow shaft 34 is actively installed in axis hole 15 1 ends of hollow output shaft 5.

As shown in Fig. 2, Fig. 3, described hollow output shaft 5 is provided with at least two driven gears 9, driven gear 9 can rotate on hollow output shaft 5, each driven gear 9 diameter differences, and correspondence is fixed with and described each driven gear 9 ingear driving gears 10 on same input shaft 6.The utility model is fixed on the hollow output shaft 5 by jump ring 56 being provided with 9, three driven gears 9 of three driven gears on the hollow output shaft 5, and the diameter of each driven gear 9 on the hollow output shaft 5 reduces from the inside to the outside gradually.

Described driven gear 9 is provided with internal tooth 11, on sheathed this section hollow output shaft 5 of each driven gear 9, be arranged with a pair of group loose slot 12, be provided with group 13 in the group loose slot 12, group 13 can be in group loose slot 12 along hollow output shaft 5 tilting radially, for making group 13 be convenient to install, described hollow output shaft 5 is provided with group axis hole 57, is provided with group axle 55 in group axis hole 57, described group 13 is through on the group axle 55, can rotate around group axle 55.The part that group axle 55 stretches out hollow output shaft 5 fixes the driving coupling that realizes hollow output shaft and hub circle 1 with second end face 4.Group 13 is provided with and acts on the torsion spring 14 that makes the perk of one end on the hollow output shaft 5, and described hollow output shaft 5 is provided with torsion spring hole 58, and torsion spring 14 1 ends are located in the torsion spring hole 58, and the other end is pressed on the group 13.Under the normality situation, torsion spring 14 makes group 13 perks one end be in the outside of hollow output shaft 5, and the other end is in the axis hole 15.When group loose slot 12 is stuck up in group 13 outer ends, may be stuck in the internal tooth 11 and and mesh with internal tooth 11, driven gear 9 and hollow output shaft 5 are rotated together.When stick up when filing subactivity groove 12 group 13 outer ends, group 13 with separate with internal tooth 11, then driven gear 9 just rotates around hollow output shaft 5.Group 13 forms a ratchet snap-in structure with driven gear 9 like this, has unidirectional drive.Be provided with sliding part 16 in the axis hole of described hollow output shaft 5, but jack-up group 13 sticks up into end when sliding part 16 endwisely slips in axis hole 15.

After motor 3 energisings were rotated, the generator shaft gear 47 of motor shaft 46 ends drove input shaft gear 45 and rotates, and rotated thereby drive input shaft 6.Three driving gears 10 of input shaft 6 rotate thereupon, with driving gear 10 ingear driven gears 9 also rotation thereupon.

Under the initial condition, the sliding part 16 in the axis hole 15 of hollow output shaft 5 sticks up each group 13 into end jack-up, and group 13 other ends stick up into the internal tooth 11 with cooresponding driven gear 9 and break away from, and driven gear 9 rotates around hollow output shaft 5, and be neutral gear this moment.

The position of adjustment slide 16, make sliding part 16 leave the locational group 13 of inner segment on the hollow output shaft 5, group 13 under the effect of torsion spring 14 its stick up end stick up in the axis hole 15 into, its perk one end snaps in the internal tooth 11 of cooresponding driven gear 9, this driven gear 9 drives hollow output shaft 5 and rotates, and when hollow output shaft 5 was rotated, transmission second end face 4 rotated, hub circle 1 is rotated around first hollow shaft 20 and second hollow shaft 34, and be one grade this moment.

When sliding part 16 leaves on the hollow output shaft 5 group 13 on second fragment position, as mentioned above, driven gear 9 on this fragment position drives hollow output shaft 5 and rotates, because group 13 has unidirectional drive with the ratchet snap-in structure structure that driven gear 9 forms, and 9 diameters of the driven gear on this fragment position are less, rotating speed is also fast than driven gear 9 on the interior fragment position, and hollow output shaft 5 was just driven by the driven gear on this fragment position 9 and rotated this moment, and be second gear this moment.

In like manner, when sliding part 16 left on the hollow output shaft 5 group 13 on the outermost fragment position, the driven gear 9 on the outermost fragment position drove hollow output shaft 5 and rotates, and be third gear this moment.

Control interlock between driven gear 9 and the hollow output shaft 5 by adjustment slide 16, can realize that three-step gear shift regulates, more driven gear 9 is set just can realizes the multi-change speed adjusting.

As shown in Figure 4, the end of described group 13 perk ends is ratchet shape, and the internal tooth 11 of same described driven gear 9 is ratchet-like, and group 13 is convenient to the engagement with internal tooth 11, has unidirectional drive.Group 13 sticks up into distolateral limit and is provided with inclined-plane 17, and inclined-plane 17 can be touched by sliding part 16 with comparalive ease and make group 13 produce tilting.

As Fig. 5, shown in Figure 11, described sliding part 16 is provided with and can touches group 13 and stick up annular slope 18 into end, makes sliding part 16 be divided at least two joints, and a joint is thick, and a joint is thin.Wherein thick part withstands on the internal face of axis hole 15, and group 13 is stuck up into the outside jack-up of end, and group 13 perk ends are then inwardly regained.Sliding part 16 thin parts then do not reach group 13 and stick up into end, allow group 13 perk ends outwards upspring under the elastic force effect of torsion spring 14.Adjustment slide 16 is in the process of endwisely slipping, and annular slope 18 can touch group 13 with comparalive ease, makes group 13 produce tilting, group 13 is snapped onto in the internal tooth 11 or with internal tooth 11 break away from.When sliding part 16 slides in axis hole 15, annular slope 18 can withstand on the group 13 that sticks up in the axis hole 15 and stick up into end, easily by cross motion make group 13 produce perpendicular to group axle 55 axial tiltings with the group outside jack-up of 13 perk ends or inwardly stick up into.

As Fig. 1, Fig. 7, Fig. 8, Figure 14, Figure 15, shown in Figure 17, the group axle 55 that stretch out the end of described hollow output shaft 5 is fixed with driver blade 35, described driver blade 35 is provided with groove 36, described second end face 4 inboards are provided with the projection 37 that can insert in groove 36, are provided with damping spring 38 between described groove 36 and projection 37.When hollow output shaft 5 runnings, pass through foregoing description, can learn 35 rotations of driving driver blade, the projection 37 of second end face 4 can rotate a certain angle in groove 36 earlier and oppress damping spring 38, by damping spring 38 drive groove 36 hub circle 1 is rotated together afterwards, realize the purpose of damping.

In conjunction with shown in Fig. 1 to Fig. 7, in first kind of embodiment of the present utility model, described sliding part 16 is provided with inner bolt hole 25 and pilot bar hole 26, the axially parallel of the axial and axis hole 15 in described inner bolt hole 25 and pilot bar hole 26, be provided with screw rod 22 in the described inner bolt hole 25, threads engaged on inner bolt hole 25 and the screw rod 22, screw rod 22 can rotate in the assembly opening 61 of second hollow shaft 34, the set-up mode of screw rod 22 is to be fixed with screw gear case 53 by nut 62 on described second hollow shaft 34, be provided with rotating screw gear 54 in the screw gear case 53, the assembly opening 61 that described screw rod 22 1 ends pass on second hollow shaft 34 is connected and fixed with screw gear 54.Described second hollow shaft 34 is provided with stepping motor 23, the output shaft of stepping motor 23 and screw gear 54 engaged transmission.Be movably equipped with pilot bar 24 in the described pilot bar hole 26, pilot bar 24 1 ends are fixed on second hollow shaft 34, and pilot bar 24 also can be fixed on the screw gear case 53.

When stepping motor 23 drive screws 22 rotated, pilot bar 24 can play the effect that prevents that sliding part 16 from rotating, and like this under the screw thread fit on inner bolt hole 25 and the screw rod 22, sliding part 16 will be along the moving axially of screw rod 22, and then axially move in axis hole 15.Sliding part 16 moves to each driven gear 9 residing position, touches the group 13 that is arranged on hollow output shaft 5 each sections respectively, and group 13 pairing driven gears 9 are combined with hollow output shaft 5.The number of turns of rotating by control step motor 23, thus control sliding part 16 in the distance that moves on the screw rod 22 promptly in the distance that in axis hole 15, moves, and then realize the shift speed governing.

Embodiment 2

As Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12, shown in Figure 13 and Figure 14, be outside they are different with embodiment 1: described sliding part 16 is provided with screw mandrel 29, the axially parallel of the axial and axis hole 15 of screw mandrel 29, described screw mandrel 29 is provided with the inner bolt hole gear 28 that in one plane rotates, the set-up mode of described inner bolt hole gear 28 is to be fixed with screw mandrel support 27 by nut 62 on described second hollow shaft 34, inner bolt hole gear 28 rotates in screw mandrel support 27, and an end of described screw mandrel 29 is located in the screw of inner bolt hole gear 28 after passing assembly opening 61 on second hollow shaft 34.Described inner bolt hole gear 28 and the stepping motor 23 output shaft driving coupling that are fixed on second hollow shaft 34, described screw mandrel 29 is provided with axial guide chute 32, described second hollow shaft 34 is provided with the locating piece 33 that stretches in the guide chute 32, and locating piece 33 also can be located on the screw mandrel support 27.

When stepping motor 23 output shaft transmission inner bolt hole gears 28 rotate, guide chute 32 and locating piece 33 match and can prevent that screw mandrel 29 and inner bolt hole gear 28 from rotating together, under the cooperation of the screw of screw thread on the screw mandrel 29 and inner bolt hole gear 28, described screw mandrel 29 and sliding part 16 axially move in axis hole 15 like this.Sliding part 16 moves to each driven gear 9 residing position, touches the group 13 that is arranged on hollow output shaft 5 each sections respectively, and group 13 pairing driven gears 9 are combined with hollow output shaft 5.By the number of turns of control step motor 23 rotations, thus the distance that control sliding part 16 moves in axis hole 15, and then realize the shift speed governing.

Embodiment 3

As shown in Figure 15, Figure 16 and Figure 17, its with embodiment 1,2 different outside be: described sliding part 16 is provided with pilot hole 63, the axially parallel of the axial and axis hole 15 of described pilot hole 63, be provided with the interior hollow shaft 64 that is fixed on second hollow shaft 34 in the described pilot hole 63, sliding part 16 can endwisely slip on interior hollow shaft 64.Hollow shaft 64 sidewalls are provided with guide groove 65 in described, the groove of guide groove 65 to the axially parallel of axis hole 15.Be provided with the fastener 66 of slip in the described guide groove 65, described fastener 66 two ends withstand on the sliding part 16, and fastener 66 and sliding part 16 endwisely slip on interior hollow shaft 64 simultaneously like this.Be provided with an end in described in the hollow shaft 64 and withstand on push rod 30 on the fastener 66.Push rod 30 extends second hollow shaft, 34 outer ends along the assembly opening 61 of second hollow shaft 34, on second hollow shaft 34, be fixed with lever dolly 69 by nut 62, lever dolly 69 is provided with the lever 31 of tilting, described push rod 30 other ends withstand on an end of lever 31, the other end of described lever 31 is connected with backguy rope 67, pulling backguy rope 67 can drive lever 31 tilting on lever dolly 69, can push push rod 30 during lever 31 tiltings.Described sliding part 16 is provided with retracing spring 68, and retracing spring 68 can be set on the hollow shaft 34, and two ends withstand between sliding part 16 and axis hole 15 the inners, and retracing spring 68 can make sliding part 16 keep ejecting in hollow output shaft 5.

Under the normal condition, sliding part 16 withstands on sticking up into end of each group 13, and be neutral gear this moment.Pulling backguy rope 67, lever 31 tiltings are pushed push rod 30, and push rod 30 is pushed and is touched fastener 66, and fastener 66 drives sliding part 16 and endwisely slips simultaneously on hollow shaft 34, promptly axially moves in axis hole 15.Under the cooperatively interacting of push rod 30 and retracing spring 68, pulling backguy rope 67 can make sliding part 16 move to each driven gear 9 residing position, touch the group 13 that is arranged on hollow output shaft 5 each sections respectively, group 13 pairing driven gears 9 are combined with hollow output shaft 5.By pulling backguy rope 67, just can make from three driven gears 9 and link with hollow output shaft 5 successively, realize the shift speed governing.When the application force that discharges on the backguy rope 67, sliding part 16 outwards ejects again under the elastic force effect of retracing spring 68 automatically, realizes that speed governing resets.

Each gear described in the utility model also can be belt pulley or sprocket wheel, and engaged transmission each other becomes belt or chain gear, also can reach the technique effect of driving coupling.

Claims

1. a Variable-speed electric wheel hub comprises hub circle (1), and first end face (2) of hub circle (1) and the central authorities of second end face (4) are respectively equipped with first axis hole (8) and second axis hole (19);

Be provided with motor (3) in the described hub circle (1), be fixed with on the described motor (3) can be in described first axis hole (8) first hollow shaft (20) in relative rotation, power lead (59) extends out from first hollow shaft (20);

Be fixed with casing (21) on the described motor (3), in described second axis hole (19), be provided with relatively turnable second hollow shaft (34);

Rotate in the described casing (21) and be provided with hollow output shaft (5) and input shaft (6), described input shaft (6) and motor shaft (46) driving coupling, described hollow output shaft (5) and hub circle (1) driving coupling;

Described hollow output shaft (5) is provided with at least two driven gears (9), and driven gear (9) can be in the last rotation of hollow output shaft (5), and the last correspondence of described input shaft (6) is fixed with the driving gear (10) with driven gear (9) engaged transmission;

Described driven gear (9) is provided with internal tooth (11), on sheathed this section hollow output shaft (5) of each driven gear (9), group loose slot (12) is arranged, be provided with group (13) in the group loose slot (12), group (13) can be in group loose slot (12) tilting, group (13) is provided with to act on and makes the perk of one end be stuck in torsion spring (14) on the internal tooth (11) on the hollow output shaft (5);

The axis hole (15) of described hollow output shaft (5) but in be provided with jack-up group (13) and stick up sliding part (16) into end;

It is characterized in that:

Described sliding part (16) is provided with inner bolt hole (25) and pilot bar hole (26), the axially parallel of the axial and axis hole (15) of described inner bolt hole (25) and pilot bar hole (26), be provided with the screw rod (22) that can in second hollow shaft (34), rotate in the described inner bolt hole (25), described screw rod (22) and stepping motor (23) driving coupling that is fixed on second hollow shaft (34), be movably equipped with pilot bar (24) in the described pilot bar hole (26), pilot bar (24) is located on second hollow shaft (34).

2. Variable-speed electric wheel hub according to claim 1 is characterized in that: described group (13) sticks up into distolateral limit and is provided with inclined-plane (17).

3. Variable-speed electric wheel hub according to claim 1 and 2 is characterized in that: described sliding part (16) is provided with and can touches group (13) and stick up annular slope (18) into end.

4. Variable-speed electric wheel hub according to claim 1 and 2, it is characterized in that: described hollow output shaft (5) is in same axis with second hollow shaft (34), the end of hollow output shaft (5) is fixed with driver blade (35), described driver blade (35) is provided with groove (36), described second end face (4) inboard is provided with the projection (37) that can insert in groove (36), is provided with damping spring (38) between described groove (36) and projection (37).

5. Variable-speed electric wheel hub according to claim 3, it is characterized in that: described hollow output shaft (5) is in same axis with second hollow shaft (34), the end of hollow output shaft (5) is fixed with driver blade (35), described driver blade (35) is provided with groove (36), described second end face (4) inboard is provided with the projection (37) that can insert in groove (36), is provided with damping spring (38) between described groove (36) and projection (37).

6. a Variable-speed electric wheel hub comprises hub circle (1), and first end face (2) of hub circle (1) and the central authorities of second end face (4) are respectively equipped with first axis hole (8) and second axis hole (19);

It is characterized in that:

Described sliding part (16) is provided with screw mandrel (29), the axially parallel of the axial and axis hole (15) of screw mandrel (29), described screw mandrel (29) is provided with the inner bolt hole gear (28) that in one plane rotates, inner bolt hole gear (28) and stepping motor (23) driving coupling that is fixed on second hollow shaft (34), described screw mandrel (29) is provided with axial guide chute (32), and described second hollow shaft (34) is provided with the locating piece (33) that stretches in the guide chute (32).

7. Variable-speed electric wheel hub according to claim 6 is characterized in that: described group (13) sticks up into distolateral limit and is provided with inclined-plane (17).

8. according to claim 6 or 7 described Variable-speed electric wheel hubs, it is characterized in that: described sliding part (16) is provided with and can touches group (13) and stick up annular slope (18) into end.

9. according to claim 6 or 7 described Variable-speed electric wheel hubs, it is characterized in that: described hollow output shaft (5) be in same axis with second hollow shaft (34), the end of hollow output shaft (5) is fixed with driver blade (35), described driver blade (35) is provided with groove (36), described second end face (4) inboard is provided with the projection (37) that can insert in groove (36), is provided with damping spring (38) between described groove (36) and projection (37).

10. Variable-speed electric wheel hub according to claim 8, it is characterized in that: described hollow output shaft (5) be in same axis with second hollow shaft (34), the end of hollow output shaft (5) is fixed with driver blade (35), described driver blade (35) is provided with groove (36), described second end face (4) inboard is provided with the projection (37) that can insert in groove (36), is provided with damping spring (38) between described groove (36) and projection (37).

11. a Variable-speed electric wheel hub comprises hub circle (1), first end face (2) of hub circle (1) and the central authorities of second end face (4) are respectively equipped with first axis hole (8) and second axis hole (19);

It is characterized in that:

Described sliding part (16) is provided with pilot hole (63), the axially parallel of the axial and axis hole (15) of described pilot hole (63), be provided with the interior hollow shaft (64) that is fixed on second hollow shaft (34) in the described pilot hole (63), hollow shaft (64) sidewall is provided with guide groove (65) in described, be provided with fastener (66) in the described guide groove (65), fastener (66) two ends withstand on the sliding part (16), be provided with an end in described second hollow shaft (34) and withstand on push rod (30) on the fastener (66), described push rod (30) one ends withstand on an end that is fixed in second hollow shaft (34) upper lever (31), the other end of described lever (31) is connected with backguy rope (68), and described sliding part (16) is provided with effect makes it keep the retracing spring (68) that ejects in hollow output shaft (5).

12. Variable-speed electric wheel hub according to claim 11 is characterized in that: described group (13) sticks up into distolateral limit and is provided with inclined-plane (17).

13. according to claim 11 or 12 described Variable-speed electric wheel hubs, it is characterized in that: described sliding part (16) is provided with and can touches group (13) and stick up annular slope (18) into end.

14. according to claim 11 or 12 described Variable-speed electric wheel hubs, it is characterized in that: described hollow output shaft (5) be in same axis with second hollow shaft (34), the end of hollow output shaft (5) is fixed with driver blade (35), described driver blade (35) is provided with groove (36), described second end face (4) inboard is provided with the projection (37) that can insert in groove (36), is provided with damping spring (38) between described groove (36) and projection (37).

15. Variable-speed electric wheel hub according to claim 13, it is characterized in that: described hollow output shaft (5) be in same axis with second hollow shaft (34), the end of hollow output shaft (5) is fixed with driver blade (35), described driver blade (35) is provided with groove (36), described second end face (4) inboard is provided with the projection (37) that can insert in groove (36), is provided with damping spring (38) between described groove (36) and projection (37).