CN201856879U

CN201856879U - Speed-changing device of electric vehicle

Info

Publication number: CN201856879U
Application number: CN201020536725XU
Authority: CN
Inventors: 纪孟豪
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-09-17
Filing date: 2010-09-17
Publication date: 2011-06-08
Anticipated expiration: 2020-09-17

Abstract

The utility model relates to a speed-changing device of an electric vehicle. A main driving shaft, a slave driving shaft and an output shaft are arranged in a casing; a motor is mounted outside the casing; a plurality of wheel system sets are arranged among the main driving shaft, the slave driving shaft and the output shaft and have different rotation speed ratios; a clutch is fixedly connected and arranged on the wheel system set in a position of a driven shaft; a guiding mechanism and a plurality of pushing sets are arranged on the slave driving shaft; external threads of the guiding mechanism can be driven by the motor to drive the pushing sets to do transverse displacement to laterally press the clutch and control the wheel system sets on the slave driving shaft to idle or drive the slave driving shaft to rotate; and one of the wheel system achieves the effect of driving. By using the structure comprising the elements, the speed-changing device can be used for changing the speed rate of the slave driving shaft and outputting the speed rate to the wheels through the output shaft, so as to achieve the aim of changing the speed of the bicycle.

Description

The battery-driven car transmission system

Technical field

The utility model relates to a kind of battery-driven car transmission system, refer to especially a kind of by motor just, reverse so that have the battery-driven car transmission system of guiding mechanism.

Background technology

One existing structure 7, see also shown in Figure 9, be No. the 96220719th, the novel patent of TaiWan, China " automatic speed derailleur for electric vehicle ", its structure is that housing 79 tools, one main driving axle 71 and is from transmission shaft 72, in this main driving axle 71 and should be from being provided with a plurality of train groups 73 between the transmission shaft 72, comprise big gear wheel 731 and miniature gears 732, this train group 73 has different revolution ratios, and this train group 73 is positioned at this place from transmission shaft 72 and connects and establish a power-transfer clutch 74, and 72 establish a plurality of increased pressure boards 77 of a control system in this from transmission shaft, can make this power-transfer clutch 74 of left and right sides cross travel side pressure, do idle running or drive at this from transmission shaft 72 with these a plurality of train groups 73 of control, and can only one of them this train group 73 make to drive effect; Formation by said elements should be from the speed of transmission shaft 72 to reach conversion; Wherein, this train group 73 is a pair of and one exports for slow speed of revolution for the output of high rotating speed and another that this train group 73 is positioned at this from the affixed power-transfer clutch 74 that is provided with of transmission shaft 72 inwardly again, and this control system is between this is to power-transfer clutch 74; This train group 73 is at least plural gear combination, and this train group 73 also can be constituted by a pair of belt pulley and a belt; Wherein, this control system comprises a body 76, one increased pressure board 77, an and connecting rod 78, and tool one groove 761 around this body 76, this connecting rod 78 is fixedly arranged on 76 predeterminated positions of this body, this increased pressure board 77 is located at the both sides of this body 76 for a pair of next-door neighbour respectively, this increased pressure board 77 also respectively be provided with a groove 771 up and down, and to snap in a plurality of slider guides 791 that this housing 79 is set firmly, make this increased pressure board 77 only make horizontal left and right displacement according to the guiding of this slider guide 791, establish a device for horizontally pushing 762 again between this increased pressure board 77 and this body 76, when this device for horizontally pushing 762 is just changeing for this body 76, this increased pressure board 77 of these body 76 1 sides can compress this power-transfer clutch 74, when this body 76 reversed, its other this increased pressure board 77 in addition of side can compress this power-transfer clutch 74 in addition; And a screw 781 is established in these connecting rod 78 stage casings, and the axle center that this screw 781 is established a variable speed control motor wears, borrow this variable speed control motor just, reverse reach this body 76 just, the purpose that reverses; Wherein this device for horizontally pushing 762 is provided with a plurality of voussoirs that correspond to each other and cooperate for this body 76 with each end face ring in opposite directions between this increased pressure board 77, and this device for horizontally pushing 762 also can be provided with a plurality of pearl grooves and the steel ball that corresponds to each other and cooperate with each end face ring in opposite directions between this increased pressure board 77 for this body 76; Wherein, this variable speed control motor is set up a control circuit, can detect speed of a motor vehicle situation by the set speed of a motor vehicle inductor of this control circuit, then this control circuit must according to the speed of a motor vehicle come this variable speed control motor of automatic guidance just, reverse; And this variable speed control motor also can be subjected to this variable speed control motor of manual control just, reverse.

Construction by said elements, detect road speed and send a signal to control system by the set speed of a motor vehicle inductor of control circuit, this control system is controlled the rotating of this variable speed control motor, switch to required rotating speed, reach the purpose that reduces power consumption and increase the continuation of the journey effect of battery-driven car.

But it use to go up above-mentioned existing structure suitable facility and has some to make us the part that denounces also, and one, selected power-transfer clutch are required to be special shape, and cost is high, and easy-maintaining not when causing damage needs to such an extent that change new product, causes user's burden economically; Its two, the slider guide of this enclosure interior and increased pressure board easily because of wearing and tearing behind one section period of service, cause increased pressure board to compress the power-transfer clutch time and postpone to some extent, cause and switch the shelves growth of fast time; Its three, in opposite directions each end face ring is provided with a plurality of voussoirs that correspond to each other and cooperate between the body of this control system and the increased pressure board, its end face processing is quite loaded down with trivial details, take and take; They are four years old, when switching shelves speed, the required pressure of bestowing of this slider guide is quite big, and after this slider guide switches the fast displacement of shelves, when gear shift once more and can't reply initial point immediately, cause when switching shelves speed and can't switch immediately, form power interruption and time to procrastinate, so generally speaking, existing structure still has many shortcomings to remain to be improved.

The utility model content

Main purpose of the present utility model: be to provide a kind of battery-driven car that allows reach an easy battery-driven car transmission system that switches shelves speed fast.

Secondary objective of the present utility model: be to provide a kind of easy construction and battery-driven car transmission system convenient for production.

The utility model provides a kind of battery-driven car transmission system, in a housing, has a main driving axle, one from a transmission shaft and an output shaft, this main driving axle, from being provided with a plurality of train groups between transmission shaft and the output shaft, and this housing is equiped with a motor outward, and this train group has different ratio of revolution each other, and be positioned at the affixed power-transfer clutch that is provided with of this train group from transmission shaft, should be provided with a guiding mechanism and a plurality of promotion group from transmission shaft again, and this motor orders about the outside thread rotation of this guiding mechanism and makes left and right sides cross travel with this power-transfer clutch of side pressure to drive the promotion group, should do idle running or drive to be somebody's turn to do from a plurality of train groups on the transmission shaft to control, and this train group can only one of them make to drive effect from the transmission shaft rotation.

Further, in one embodiment, it is a pair of being positioned at this train group from transmission shaft, and one be that the output of high tachometer value and another are the output of slow speed of revolution value, and this is provided with the train group from transmission shaft one end and is used to transmit rotating speed from transmission shaft in output shaft again.

Further, in one embodiment, this guiding mechanism is constituted by a worm gear and a worm screw, and wherein this worm screw one end is provided with crowngear, and this worm gear then is located at this centre from transmission shaft, and its both sides are provided with protrusion outside thread face and are used for this promotion group clip.

Further, in one embodiment, this promotion group is made of thrust bearing, bearing carrier ring and steady ring, should the promotion group be a pair of again, and be located at the worm gear both sides respectively, this thrust bearing is installed in this bearing carrier ring again, and this bearing carrier ring inside is provided with negative thread again, the periphery then is arranged with this steady ring, and this steady ring bottom is provided with a chute.

Further, in one embodiment, this enclosure interior is provided with a positioning rod, and this radius stay is used to cooperate the chute of steady ring bottom.

Further, in one embodiment, the outer set motor of this housing, its rotating shaft is provided with the crowngear that is meshed with worm screw one end crowngear, and so as to driving the worm screw action.

Further, in one embodiment, this promotion group is not switched shelves speed, when being in neutral state, this promotion group need and this guiding mechanism between need leave certain clearance, and should the promotion group and this power-transfer clutch between also need leave certain clearance.

Further, in one embodiment, these a plurality of train groups are made of big gear wheel and miniature gears, and this big gear wheel needs to be in eternal engagement with miniature gears.

Further, in one embodiment, should be provided with a plurality of clutch bases from transmission shaft, and this clutch base is used for power-transfer clutch and is arranged at from the end face and the miniature gears end face of the big gear wheel at transmission shaft two ends.

Learn that by above explanation the utility model is compared prior art, really can reach following effect:

1, is in eternal engagement because of the big gear wheel in a plurality of train groups and miniature gears, so the kinetic force that transmits is directly passed on, power waste is less, so speed-changing is quite quick, and only need by switch order about motor just, reverse to reach and switch shelves speed, quite easy on controlling.

2, the member because of the construction transmission system is all the common mechanical element, so production and processing or purchase and assemble quite easily is easy to repacking or maintenance.

Description of drawings

Fig. 1 is the scheme drawing of the utility model battery-driven car transmission system.

Fig. 2 is the enforcement combination schematic perspective view of the utility model battery-driven car transmission system.

Fig. 3 is the utility model battery-driven car transmission system decomposition chart.

Fig. 4 is a B-B section section-drawing among Fig. 1.

Fig. 5 is an A-A section section-drawing among Fig. 1.

Fig. 6 is the diagram of circuit of the utility model battery-driven car transmission system speed change.

Fig. 7 is that the utility model battery-driven car transmission system structure is switched the high speed gear generalized section.

Fig. 8 is that the utility model battery-driven car transmission system structure is switched the low gear generalized section.

Fig. 9 is existing electric vehicle transmission constructional drawing.

The main element nomenclature:

1: main driving axle; 2: from transmission shaft;

21: axostylus axostyle; 22: guiding mechanism;

221: worm gear; 222: worm screw;

2221: crowngear; 23: the train group;

231: big gear wheel; 232: miniature gears;

24: the promotion group; 241: thrust bearing;

242: bearing carrier ring; 243: steady ring;

2431: chute; 25: power-transfer clutch;

26: big bearing; 27: little bearing;

28: clutch base; 3: output shaft;

31: the train group; 311: power wheel;

76: body; 5: motor;

51: crowngear; 6: housing;

61: radius stay; 7: existing structure;

71: main driving axle; 72: from transmission shaft;

73: the train group; 731: big gear wheel;

732: miniature gears; 74: power-transfer clutch;

761: groove; 762: device for horizontally pushing;

77: increased pressure board; 771: groove;

78: connecting rod; 781: screw;

79: housing; 791: slider guide.

The specific embodiment

The utility model is about a kind of battery-driven car transmission system, see also Fig. 1 and Fig. 2, wherein the structure of this battery-driven car transmission system is tool one main driving axle 1 in the housing 6, one from a transmission shaft 2 and an output shaft 3 (as shown in Figure 4), wherein these housing 6 inside are provided with a positioning rod 61 (as shown in Figure 3), the outside then is equiped with a motor 5, and these motor 5 rotating shafts are provided with a crowngear 51 (as shown in Figure 3), this main driving axle 1 again, be provided with a plurality of train groups 23 (as shown in Figure 4) between transmission shaft 2 and the output shaft 3, wherein should from transmission shaft 2 one ends be provided with in addition train group 31 for give transmission from the rotating speed of transmission shaft 2 in output shaft 3, and output to wheel by output shaft 3, other is positioned at this is a pair of from a plurality of train groups 23 on the transmission shaft 2, and constituted by big gear wheel 231 and miniature gears 232, and these 23 of a plurality of train groups have different revolution ratios each other, one is that the output of high tachometer value and another are exported for the slow speed of revolution value, and this big gear wheel 231 and miniature gears 232 are in eternal engagement.

Please in conjunction with consulting Fig. 3 and Fig. 4, wherein be positioned at this a plurality of train groups 23 affixed power-transfer clutchs 25 that are provided with from the transmission shaft 2, should be provided with a plurality of clutch bases 28 from transmission shaft 2 in addition, and this power-transfer clutch 25 can be installed on the end face of the end face of big gear wheel 231 and miniature gears 232 by this clutch base 28, should be provided with a guiding mechanism 22 and a plurality of promotion group 24 from transmission shaft 2 again, wherein this guiding mechanism 22 is constituted by a worm gear 221 and a worm screw 222, and these worm screw 222 1 ends are provided with a crowngear 2221 that is meshed with crowngear 51 in motor 5 rotating shafts, so when motor 5 runnings, this worm screw 222 can be rotated with worm gear 221, and direction of transfer is left and right sides lateral transport by outside thread guiding, these worm gear 221 two ends are provided with the outside thread face that protrudes in addition, and be located at from the centre of transmission shaft 2, again should promotion group 24 by thrust bearing 241, bearing carrier ring 242 and steady ring 243 constitute, and should promotion group 24 also be a pair of, and be located at worm gear 221 both sides respectively, this thrust bearing 241 is installed in the bearing carrier ring 242 again, and these bearing carrier ring 242 inside are provided with negative thread can form clip with worm gear 221 two ends outside thread faces, these bearing carrier ring 242 outer race are provided with a steady ring 243 in addition, and these steady ring 243 bottoms are provided with a chute 2431, formation by said elements, can make promotion group 24 be able to the lateral dynamics of guiding and cooperate the chute 2431 of steady ring 243 bottoms to cooperate with the slippage of housing 6 positioned internal bars 61 by guiding mechanism 22 outside threads, make promotion group 24 be able to displacement and side pressure power-transfer clutch 25, should do idle running or drive from a plurality of train groups 23 on the transmission shaft 2 with control should be from transmission shaft 2 rotations, and this train group 23 can only one of them make to drive effect, and by train group 31 from transmission shaft 2 one ends, to pass to output shaft 3 from the rotating speed of transmission shaft 2, and output shaft 3 passes to it on wheel again, reaches the purpose of the conversion speed of a motor vehicle.

When the user does not open transmission system in general travel conditions, shelves speed is not switched, be to be in the neutral gear situation, this promotion group 24 not action displacement touches power-transfer clutch 25, this moment should promotion group 24 with guiding mechanism 22 between leave certain clearance, and should promotion group 24 with power-transfer clutch 25 between also leave certain clearance, and this main driving axle 1 is often to move, and should must dally and keep from transmission shaft 2 original rotating speeds, as shown in Figure 5 from transmission shaft 2.

See also Fig. 6 and Fig. 7, when switching high speed gear, the user is with the transmission system switch open, motor 5 is driven (as step S1 and S2), and motor 5 power promptly can be lateral transport with its direction of transfer guiding by the action (according to the outside thread conduction) of guiding mechanism 22, being positioned at the promotion group 24 at worm gear 221 two ends this moment can be guided simultaneously, formation one is advanced (left end promotion group 24 is leaned on) and is gone out (right-hand member promotion group 24 moves to right-hand) phenomenon in worm gear 221, promptly the outside thread as the described guiding mechanism of step S3 conducts the promotion group, and the promotion group 24 on right side is able to cooperate with the slippage of housing 6 positioned internal bars 61 by the chute 2431 of steady ring 243 bottoms, and on axle, carry out displacement and side pressure to the right to power-transfer clutch 25 (as step S4), and has different revolution ratios each other because of 23 of train groups, right side train group 23 is a high tachometer value output, and because of big gear wheel in the train group 23 231 and miniature gears 232 are in eternal engagement, switch and make this rotating speed get at high speed from transmission shaft 2, be that step S5 is described from the transmission shaft speed change, and output to wheel to reach the purpose of switching high speed gear by output shaft 3 via train group 31.

See also Fig. 8, and desire is identical with above-mentioned described principle when switching low gear, has difference only and only be the direction difference transmitted.

So by control motor 5 just, reverse direction, must make promotion group 24 on axostylus axostyle 21 (as shown in Figure 3), carry out left or right-hand cross travel, and use side pressure power-transfer clutch 25, and because of 23 of train groups have each other different rotating speeds when the big gear wheels 231 in the train group 23 be in eternal engagement with miniature gearss 232, switch and make this rotating speed get at high speed from transmission shaft 2, do not make the transmission of power that interruption delay is arranged, and reduce the electric energy that is consumed when battery-driven car travels, and then reach purpose of energy saving.

Please consult Fig. 3 again, wherein should be from transmission shaft 2 by an axostylus axostyle 21 guiding mechanism 22 that stretches through, promotion group 24, big bearing 26, little bearing 27, power-transfer clutch 25, big gear wheel 231, basic mechanical element such as miniature gears 232 and power wheel 311 constitute, the loss due to friction that is caused when this big bearing 26 and little bearing 27 provide the fixing of axostylus axostyle 21 and reduce axostylus axostyle 21 rotations again, so formation by said elements, make battery-driven car transmission system of the present utility model have easy production and processing or purchase assembling voluntarily, be easy to the repacking maintenance, characteristics such as kinetic equation loss is little are beneficial to maker and user.

Comprehensive above explanation, the utility model is about a kind of battery-driven car transmission system, for a kind of use motor just, reverse to the transmission system that must make the tool guiding mechanism, can be on axostylus axostyle lateral transport, order about the promotion group and be able to displacement side pressure power-transfer clutch, impel the axostylus axostyle rotating speed to produce change, and output on the wheel to reach the Fast transforms speed of a motor vehicle.

Need to prove; the above is the know-why that concrete enforcement of the present utility model is used; if comply with the change that conception of the present utility model is done; when the function that it produced does not exceed specification sheets and graphic contain spiritual yet, all should be in the scope of claims protection of the present utility model.

Claims

1. battery-driven car transmission system, in a housing, has a main driving axle, one from a transmission shaft and an output shaft, it is characterized in that: this main driving axle, from being provided with a plurality of train groups between transmission shaft and the output shaft, and this housing is equiped with a motor outward, and this train group has different ratio of revolution each other, and be positioned at the affixed power-transfer clutch that is provided with of this train group from transmission shaft, should be provided with a guiding mechanism and a plurality of promotion group from transmission shaft again, and this motor orders about the outside thread rotation of this guiding mechanism and makes left and right sides cross travel with this power-transfer clutch of side pressure to drive the promotion group, should do idle running or drive to be somebody's turn to do from a plurality of train groups on the transmission shaft to control, and this train group can only one of them make to drive effect from the transmission shaft rotation.

2. battery-driven car transmission system according to claim 1, it is characterized in that: it is a pair of being positioned at this train group from transmission shaft, and one is that the output of high tachometer value and another are the output of slow speed of revolution value, again this from transmission shaft one end be provided with the train group be used to transmit this from the rotating speed of transmission shaft in output shaft.

3. battery-driven car transmission system according to claim 1, it is characterized in that: this guiding mechanism is constituted by a worm gear and a worm screw, wherein this worm screw one end is provided with crowngear, and this worm gear then is located at this centre from transmission shaft, and its both sides are provided with protrusion outside thread face and are used for this promotion group clip.

4. battery-driven car transmission system according to claim 3, it is characterized in that: this promotion group is made of thrust bearing, bearing carrier ring and steady ring, should the promotion group be a pair of again, and be located at the worm gear both sides respectively, this thrust bearing is installed in this bearing carrier ring again, this bearing carrier ring inside is provided with negative thread again, and the periphery then is arranged with this steady ring, and this steady ring bottom is provided with a chute.

5. battery-driven car transmission system according to claim 4 is characterized in that: this enclosure interior is provided with a positioning rod, and this radius stay is used to cooperate the chute of steady ring bottom.

6. battery-driven car transmission system according to claim 3 is characterized in that: the outer set motor of this housing, and its rotating shaft is provided with the crowngear that is meshed with worm screw one end crowngear, and so as to driving the worm screw action.

7. battery-driven car transmission system according to claim 1, it is characterized in that: this promotion group is not switched shelves speed, when being in neutral state, this promotion group need and this guiding mechanism between need leave certain clearance, and should the promotion group and this power-transfer clutch between also need leave certain clearance.

8. battery-driven car transmission system according to claim 1 is characterized in that: these a plurality of train groups are made of big gear wheel and miniature gears, and this big gear wheel needs to be in eternal engagement with miniature gears.

9. battery-driven car transmission system according to claim 1 is characterized in that: should be provided with a plurality of clutch bases from transmission shaft, and this clutch base is used for power-transfer clutch and is arranged at from the end face and the miniature gears end face of the big gear wheel at transmission shaft two ends.