CN202628958U - Two-section automatic speed change mechanism for electric vehicle - Google Patents
Two-section automatic speed change mechanism for electric vehicle Download PDFInfo
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- CN202628958U CN202628958U CN 201220152530 CN201220152530U CN202628958U CN 202628958 U CN202628958 U CN 202628958U CN 201220152530 CN201220152530 CN 201220152530 CN 201220152530 U CN201220152530 U CN 201220152530U CN 202628958 U CN202628958 U CN 202628958U
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- gear
- ratchet
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- input shaft
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Abstract
The utility model discloses a two-section automatic speed change mechanism for an electric vehicle. The two-section automatic speed change mechanism comprises a gearbox shell, a motor, a transmission shaft, an output shaft, a first gear, a second gear, a first unidirectional gear, a second unidirectional gear, a third gear, a fourth gear and a clutch, wherein the gearbox shell comprises an outer shell and an inner shell; the motor is fixedly arranged at the outer side of the gearbox shell and is provided with an input shaft; the transmission shaft can pivot in the gearbox shell; the output shaft is connected with an external member to output power; the outer edges of the first and second gears are provided with different tooth numbers; the first and second gears are coaxially arranged on the input shaft; the outer edges of the first and second unidirectional gears are provided with different tooth numbers; the first and second unidirectional gears are arranged on the transmission shaft; the third gear is embedded on the transmission shaft; the fourth gear is embedded on the output shaft; the outer edges of the third gear and the fourth gear are meshed with each other; and the clutch comprises a driving piece and a driven piece. The two-section automatic speed change mechanism has different torque output and rotational speed ratios, meets different road condition requirements, achieves a two-section speed change effect in the running process in an automatic mode and is high in transmission efficiency, the electric energy requirement of the motor is saved, and the effect of improving the endurance of the electric vehicle is achieved.
Description
Technical field
The utility model is relevant two sections automatic transmissions of a kind of electric motor car, refer to especially a kind ofly when fast state, can turn clutch automatically, and the utilization unilateral bearing crosses rotary speed property, but makes the automatic transmission of two groups of gear train independent operation of different rotating speeds ratio.
Background technique
Because the demand of row make the number of locomotives of riding instead of walk constantly increase, but conventional locomotive uses gasoline to be fuel, the consumption of the energy and the pollution of air are produced very serious and negative injury; Raise day by day based on the awakening of environmental consciousness and to the requirement of environmental quality, therefore, government department and green group are drawed from one to make good the deficits of another many resources and concern for the electric motor car that can not cause environmental hazard.
The course of existing ten several years of the development of electric motor car, the battery-powered electric motor of giving of its power source causes, general prior electric car only with one fixedly the gearbox of reduction speed ratio the power of electric motor is exported; Owing to lack the function of change file number; For various driving situation, electric motor car Chang Wufa provides suitable driving force in good time, is particularly starting, climbing the highway section; With the smooth-going highway section, back of setting out on a journey; Different torsion demands but can only rely on battery to export the outputting power that different power changes electric motor, also so often causes battery to exceed its load and lower its working life; In order to overcome the problems referred to above, many electric motor car dealers are many to be adapted to specification and the performance that promotes battery; But be subject to the endurance that the space of placing battery and battery institute should provide, last item effort can not effectively solve the torsion demand of different road conditions.
In addition; Shown in Figure 1 is the transmission system 70 of existing a kind of electric motor car; Wherein transmission case 71 1 sides are provided with a motor 72, and the main shaft 721 of this motor 72 drives a drive plate 73, by a belt 74 drive one drive plates 75 and a clutch 76 power are reached force-output shaft 77 again; Force-output shaft 77 received power can drive to output shaft 79 via reducing gear 78 again, come the driving wheel (not shown) by this output shaft 79 again.
Above-mentioned transmission system 70, it mainly is to utilize belt 74 to cooperate drive plate 73 and drive plate 75 to become a so-called continuous variable transmission.But because of belt 74 as power transmitting elements, its mechanism driving efficient is poor, and then makes the shaft horsepower of motor 72 to increase, thus, power consumption will improve, cause its endurance minimizing, not attain for it and improve part.
The model utility content
The utility model technical problem underlying to be solved is, overcomes the above-mentioned defective that existing technology exists, and provides a kind of electric motor car two sections automatic transmissions; It has output of different torsion and rotating ratio, and adapting to different road conditions demands, and it is the effect that reaches two sections speed changes with automated manner when driving; And the utilization unilateral bearing is crossed rotary speed property; But make the automatic transmission of two groups of gear train independent operation of different rotating speeds ratio, make it in speed-change process, can not produce interference, have preferable transmission efficiency; Can save the power requirement of motor, and then improve the effect of electric motor car endurance.
The utility model solves the technological scheme that its technical problem adopted:
Two sections automatic transmissions of a kind of electric motor car is characterized in that, comprising:
One gear box casing comprises a shell and an inner casing, with ccontaining required speed change member;
One motor is fixedly arranged on the outside of this gear box casing, and it is provided with a motor casing, single-revolution spare and an input shaft;
One transmission shaft, an output shaft, with aforesaid input shaft, three fulcrums pivot in this gear box casing individually;
One first gear and one second gear have the different numbers of teeth, are pivoted respectively and are nested on this input shaft;
One first ratchet and one second ratchet; Its endoporus seat is a sheathed unilateral bearing respectively; And this unilateral bearing is nested in individually on this transmission shaft, this first ratchet and this first gear engagement, its two have big gear ratio; This second ratchet and this second gear engagement, its two have less gear ratio;
One the 3rd gear and one the 4th gear, both are meshing with each other, and be nested in respectively on this transmission shaft with this output shaft on;
One clutch comprises an actuator and by actuator, and this actuator is fastened on this input shaft, this then be hubbed on this input shaft by actuator and with the fixed interlock of this first gear;
Whereby, when motor is in than low speed state, its input shaft passes to output shaft with less rotating ratio after driving second gear, second ratchet, transmission shaft, the 3rd gear, the 4th gear; Again; When motor reaches higher rotation speed; To impel the actuator of clutch and formed bonding state by actuator; Then input shaft can turn clutch with after driving first gear, first ratchet, transmission shaft, the 3rd gear, the 4th gear, and bigger rotating ratio is passed to output shaft, and obtains two section type self-shifting effect.
Two sections automatic transmissions of said electric motor car, wherein, this clutch more comprises a retaining ring, and it is provided with axis hole and prominent piece, and this input shaft of blocking and this actuator rotate so that this input shaft can drive this actuator respectively.
Two sections automatic transmissions of said electric motor car, wherein, this first gear and this first ratchet, this second gear and this second ratchet, the 3rd gear and the 4th gear, its intermeshing outer rim is a helical tooth.
Two sections automatic transmissions of said electric motor car wherein, between this retaining ring and this first gear, and between this first gear and this second gear, make axially locating with axle sleeve.
By above-mentioned technological means, the utility model is compared to prior electric car transmission system, and first section and second section can the phase mutual interference when having speed change, and transmission efficiency is high and be able to promote the effect of endurance.
The beneficial effect of the utility model is that it has different torsion outputs and rotating ratio, to adapt to different road conditions demands; And it is the effect that reaches two sections speed changes with automated manner when driving, and uses unilateral bearing to cross rotary speed property, but makes the automatic transmission of two groups of gear train independent operation of different rotating speeds ratio; Make it in speed-change process, can not produce interference; Have preferable transmission efficiency, can save the power requirement of motor, and then improve the effect of electric motor car endurance.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is existing electric motor car power transmission system schematic representation.
Fig. 2 is the stereogram of the utility model preferred embodiment.
Fig. 3 is the sectional view of the utility model preferred embodiment.
Fig. 3 A is the schematic representation of the utility model preferred embodiment lower-speed state drive path.
Fig. 3 B is the schematic representation of the utility model preferred embodiment fast state drive path.
Fig. 4 is the clutch exploded view of the utility model preferred embodiment.
Fig. 5 is the clutch combination sectional view of the utility model preferred embodiment.
Fig. 6 is the clutch side sectional view of the utility model preferred embodiment.
Fig. 7 is the spiral gear stereogram of the utility model preferred embodiment.
Fig. 8 is the ratchet assembled sectional view of the utility model preferred embodiment.
Fig. 9 is the ratchet side sectional view of the utility model preferred embodiment.
Label declaration among the figure:
10: motor
11: motor casing
111: the seven axle beds
12: revolving meber
13: input shaft
14: screw
15: ball bearing
20: gear box casing
21: shell
211: the first axis holes
212: the first axle beds
213: the second axis holes
214: the second axle beds
215: the three axle beds
22: inner casing
221: the four axle beds
222: the five axle beds
223: the six axle beds
23: screw
24: containing space
31: the first gears
311: screw hole
312: bulge loop
32: the second gears
35: axle sleeve
41: transmission shaft
42: the first ratchets
421: the seven axle beds
42: the second ratchets
431: the eight axle beds
44: unilateral bearing
45: bearing housing
46: the three gears
51: output shaft
52: the four gears
60: clutch
61: actuator
611: the blocking hole
612: pressing plate
613: lining
62: by actuator
621: friction plate
622: side plate
623: joining hole
624: bolt hole
63: retaining ring
631: clamping block
632: axis hole
Embodiment
At first, see also Fig. 2～shown in Figure 9, a possible embodiments of the utility model includes:
One gear box casing 20 comprises a shell 21 and an inner casing 22, and this inside and outside shell 21/22 locks with several screws 23, and its formed containing space 24 is in order to ccontaining required speed change member; These shell 21 relevant position places are provided with first axis hole 211, first axle bed 212, second axis hole 213, second axle bed 214, and the 3rd axle bed 215; This inner casing 22 is in relevant position place that should shell 21 being provided with the 4th axle bed 221, the 5th axle bed 222, and the 6th axle bed 223; Aforesaid each axle bed then embeds a ball bearing 15 individually.
One motor 10 comprises a motor casing 11, single-revolution spare 12, an and input shaft 13, is locked in the outside of this gear box casing 20 with several screws 14; This motor casing 11 is provided with one the 7th axle bed 111; In order to embed a ball bearing 15, these input shaft 13 1 ends embed in the ball bearing 15 of the 7th axle bed 111, after the other end then passes this shell 21; Embed in the ball bearing 15 of the 4th axle bed 221, and this input shaft 13 can pivot in this gear box casing 20 in addition.
One transmission shaft 41, its two ends embed respectively in the ball bearing 15 of this second axle bed 214 and the 5th axle bed 222, and this transmission shaft 41 can pivot in this gear box casing 20 in addition.
One output shaft 51, one of which end embed in the ball bearing 15 of the 3rd axle bed 215, after the other end passes the 6th axle bed 223, is connected with external member exporting its power, and other this output shaft 51 can pivot in this gear box casing 20.
One first gear 31, its outer rim is provided with the helical tooth of 25 teeth in the present embodiment, and its both sides are respectively installed a ball bearing 15 backs and are embedded this input shaft 13, and it can be pivoted on this input shaft 13; One second gear 32; Its outer rim is provided with the helical tooth of 15 teeth in the present embodiment; Its inner rim is provided with keyway, and makes the opposite position of this input shaft 13 be provided with keyway, make this second gear 32 be nested into this input shaft 13 after; But the rotation on this input shaft 13 of key knot is as shown in Figure 3 with the configuration of upper member.
One first ratchet 42, its outer rim is provided with the helical tooth of 55 teeth in the present embodiment, intermeshes with this first gear 31; Its two have less gear ratio; Gear ratio in the present embodiment is that 55/25 (its value=2.2) its inner rim is provided with the 7th axle bed 421, installs a unilateral bearing 44 in the 7th axle bed 421 centre in addition, and installs a bearing housing 45 and ball bearing 15 in the one of which side; Install a ball bearing 15 at its opposite side, as shown in Figure 8; This unilateral bearing 44 is existing member, and its operating principle is not given unnecessary details at this; But; The inner edge of this unilateral bearing 44 is provided with several axial recessed teeth; And the opposite position that makes this transmission shaft 41 is provided with and the axial double wedge of equal number, make this unilateral bearing 44 be nested into this transmission shaft 41 after, can be fastened on and make this first ratchet 42 turn clockwise on this transmission shaft 41; But can't be rotated counterclockwise, as shown in Figure 9.
One second ratchet 43, its outer rim is provided with the helical tooth of 65 teeth in the present embodiment, intermeshes with this second gear 32; Its two have big gear ratio, gear ratio in the present embodiment is 65/15 (its value=4.3), the inner edge of this second ratchet 43 is provided with the 8th axle bed 431; Install a unilateral bearing 44 in the 8th axle bed 431 centre in addition; And install a bearing housing 45 and ball bearing 15 in the one of which side, and install a ball bearing 15 at its opposite side, the inner edge of this unilateral bearing 44 is provided with several axial recessed teeth; And the opposite position that makes this transmission shaft 41 is provided with the axial double wedge of equal number with it; After making this unilateral bearing 44 be nested into this transmission shaft 41, can be fastened on and make this second ratchet 43 turn clockwise on this transmission shaft 41, but can't be rotated counterclockwise; Its mechanism and operating principle are said with first ratchet 42, like Fig. 8, shown in Figure 9.
Because this first ratchet 42 and these first gear, 31 engagements; Has less gear ratio (2.2); And this second ratchet 43 and this second gear, 32 engagements have big gear ratio (4.3), be with; When this input shaft 13 via first gear 31, when first ratchet 42 passes to this transmission shaft 41, have bigger rotating ratio (0.45); When this input shaft 13 via second gear 32, when second ratchet 43 passes to this transmission shaft 41, then have less rotating ratio (0.23); That is via the approach of first gear 31, first ratchet 42, the rotating speed of transmission shaft 41 will be greater than the transmission way via second gear 32, second ratchet 43; Be with, the utility model provides two sections different output speeds via two groups of different gear engagement.
One the 3rd gear 46; Its outer rim is provided with helical tooth, and its inner rim is provided with several axial recessed teeth, and make the opposite position of this transmission shaft 41 be provided with and the axial double wedge of equal number; After making the 3rd gear 46 be nested into this transmission shaft 41, can be fastened on rotation on this transmission shaft 41; One the 4th gear 52, its outer rim is provided with helical tooth, the 4th gear 52 inner edges are provided with keyway, and make the opposite position of this output shaft 51 be provided with keyway, make the 4th gear 52 be nested into this output shaft 51 after, but the rotation on this output shaft 51 of key knot; The 4th gear 52 intermeshes with the outer rim of the 3rd gear 46, gives this output shaft 51 with the power that transmits this transmission shaft 41, and is as shown in Figure 3 with the configuration of upper member, and aforementioned whole its flute profile of outer gear rim configuration helical tooth is as shown in Figure 7.
One clutch 60 comprises an actuator 61 and by actuator 62, and the inner edge of this actuator 61 is provided with a blocking hole 611, and its outer rim is provided with several pressing plates 612, pastes a slice lining 613 on each pressing plate 612; This is removed top one horizontal type member by actuator 62 by the mouth word that friction plate 621 and side plate 622 are constituted, and there is a joining hole 623 in its side plate 622 central authorities, and this side plate 622 is provided with several bolts hole 624; Aforesaid first gear 31; Its side is provided with the bulge loop 312 that several screw holes 311 and one outwards are convexly equipped with; And the bulge loop 312 that makes this first gear 31 penetrates this by the joining hole 623 of actuator 62; And, make this be able to link each other and rotate at this input shaft 13 by actuator 62 and this first gear 31 with several screws its mutual corresponding bolt hole 624 and screw hole 311; One retaining ring 63 is provided with a clamping block 631, and its center is an axis hole 632; Make this retaining ring 63 embed these input shafts 13, and its clamping block 631 embeds in the blocking hole 611 of these actuators 61, then this actuator 61 can because of the blocking of this retaining ring 63 along with these input shaft 13 rotations; When motor 10 rotates this input shaft 13 to a certain high speed; The pressing plate 612 of this actuator 61 will be thrown out of because of action of centrifugal force; Make this lining 613 withstand this, and then make by actuator 62 and this first gear 31 together by actuator by friction plate 621 inner edges of actuator 62.61 drive; Said like Fig. 4, Fig. 5, with shown in Figure 6.
Again, for making gear be able to position rotating, especially 31 of this retaining ring 63 and this first gears, and this first gear 31 and 32 of this second gears, install an axle sleeve 35 individually in the utility model, it is axial mobile that associated components is not had on this input shaft 13.
Whereby; When motor 10 is in than low speed state; Its input shaft 13 passes to this output shaft 51 with less rotating ratio 0.23 after driving second gear 32, second ratchet 43, transmission shaft 41, the 3rd gear 46, the 4th gear 52, and its drive path (I) is shown in Fig. 3 A; Again; When motor 10 reaches higher rotation speed; The actuator 61 that will impel clutch 60 with formed bonding states by actuator 62, after then input shaft 13 drove first gear 31, first ratchet 42, transmission shaft 41, the 3rd gear 46, the 4th gear 52 via clutch 60, rotating ratio 0.45 that will be bigger passed to this output shaft 51; Its drive path (II) thereby obtains the output of two kinds of different rotating speeds ratios shown in Fig. 3 B.
Because unilateral bearing 44 had the characteristic of rotating speed; That is input speed is during greater than output speed; The inner ring body of its unilateral bearing 44 and outer ring body meeting independent operation, therefore, when fast state; Drive this first gear 31, first ratchet 42 by this clutch 60, this transmission shaft 41 turns round under high rotational speed; But this moment; This input shaft 13 still drives second gear 32, and second ratchet, 43 rotations; But the rotating speed that passes to transmission shaft 41 because of this second ratchet 43 is far below the rotating speed that transmits this transmission shaft 41 from first ratchet 42; Therefore it crosses rotary speed property to device with start at the unilateral bearing 44 of second ratchet, 43 inner edges, this second ratchet 43 is broken away from this transmission shaft 41 link and dally, and make the utility model obtain two section type self-shifting effect.
The above-mentioned number of teeth when rotating ratio only is the explanation of preferable possible embodiments, is not the scope in order to restriction the utility model.
The utility model can provide different torsion outputs and rotating ratio by above-mentioned technological means under different road conditions demands; And in the driving process, when motor entering high-speed rotation state, its clutch will turn the gear train of higher rotation speed ratio automatically, and reach the self-shifting effect.
The utility model has following effect compared to existing transmission system:
1. the utility model is arranged on the design of same transmission shaft 41 with two ratchets 42,43; Make full use of the characteristic and the collocation clutch 60 of " crossing rotating speed "; Reach two section type automatic speed changing, make it can the phase mutual interference between speed change, can guarantee the effect smoothly that turns round.
2. the utility model reaches automatic speed changing with gear transmission; And gear-driven efficient is higher than basic principle and characteristic that belt is a mechanism design; Therefore the utility model can obtain preferable transmission efficiency, so can reduce the shaft horsepower of motor 10, just can save the most valuable power supply of electric motor car; Can increase the endurance of electric motor car thus, and then promote the use value of electric motor car.
The above; It only is the preferred embodiment of the utility model; Be not that the utility model is done any pro forma restriction; Every technical spirit according to the utility model all still belongs in the scope of the utility model technological scheme any simple modification, equivalent variations and modification that above embodiment did.
In sum; The utility model is on structural design, use practicability and cost benefit; It is required to meet industry development fully, and the structure that is disclosed also is to have unprecedented innovation structure, has novelty, creativeness, practicability; The regulation that meets relevant utility model patent important document is so mention application in accordance with the law.
Claims (4)
1. two sections automatic transmissions of an electric motor car is characterized in that, comprising:
One gear box casing comprises a shell and an inner casing;
One motor is fixedly arranged on the outside of this gear box casing, and it is provided with an input shaft, and makes this input shaft in this gear box casing, pivot;
One transmission shaft makes it in this gear box casing, pivot;
One output shaft is connected with external member exporting its power, and makes this output shaft in this gear box casing, pivot;
One first gear and one second gear, its outer rim is provided with the different numbers of teeth, coaxial being mounted on this input shaft, and this first gear rotates on this input shaft with nested mode with the mode of being pivoted, this second gear;
One first ratchet and one second ratchet, its outer rim is provided with the different numbers of teeth, coaxial being mounted on this transmission shaft; The endoporus seat of this first ratchet and this second ratchet is a sheathed unilateral bearing respectively; And this unilateral bearing is nested in individually on this transmission shaft, and again, this first ratchet and this first gear intermesh; Its two have less gear ratio; This second ratchet and this second gear intermesh, its two have big gear ratio, shortly give this transmission shaft to transmit different rotating speed;
One the 3rd gear is nested on this transmission shaft, and one the 4th gear is nested on this output shaft, and the outer rim of the 3rd gear and the 4th gear is meshing with each other, and shortly gives this output shaft with the power that transmits this transmission shaft;
One clutch; Comprise an actuator and by actuator, this actuator is fastened on this input shaft, and this is hubbed on this input shaft by actuator; And should be fixed in the side of this first gear by a side chain of actuator, and impel this to be linked each other by actuator and this first gear;
Whereby, when motor is in than low speed state, its input shaft passes to output shaft with less rotating ratio after driving second gear, second ratchet, transmission shaft, the 3rd gear, the 4th gear; Again; When motor reaches higher rotation speed; To impel the actuator of clutch and formed bonding state by actuator; After then input shaft drives first gear, first ratchet, transmission shaft, the 3rd gear, the 4th gear via this clutch, bigger rotating ratio is passed to output shaft, and obtain two section type self-shifting effect.
2. two sections automatic transmissions of electric motor car according to claim 1 is characterized in that said clutch more comprises a retaining ring, and it is provided with axis hole and prominent piece, and this input shaft of blocking and this actuator rotate so that this input shaft can drive this actuator respectively.
3. two sections automatic transmissions of electric motor car according to claim 2; It is characterized in that said first gear and this first ratchet, this second gear and this second ratchet; The 3rd gear and the 4th gear, its intermeshing outer rim is a helical tooth.
4. two sections automatic transmissions of electric motor car according to claim 3 is characterized in that, between said retaining ring and this first gear, and between this first gear and this second gear, make axially locating with axle sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220152530 CN202628958U (en) | 2012-04-12 | 2012-04-12 | Two-section automatic speed change mechanism for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220152530 CN202628958U (en) | 2012-04-12 | 2012-04-12 | Two-section automatic speed change mechanism for electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202628958U true CN202628958U (en) | 2012-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220152530 Expired - Lifetime CN202628958U (en) | 2012-04-12 | 2012-04-12 | Two-section automatic speed change mechanism for electric vehicle |
Country Status (1)
| Country | Link |
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| CN (1) | CN202628958U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375548A (en) * | 2012-04-12 | 2013-10-30 | 周文政 | Automatic two-stage speed changing mechanism for electric vehicle |
| CN103438173A (en) * | 2013-09-06 | 2013-12-11 | 重庆和合机电有限公司 | Mechanical self-adapted automatic speed changing device of electric vehicle |
| CN104696487A (en) * | 2013-12-05 | 2015-06-10 | 苏州新成光电器件厂 | Integrated miniature stepping driving gear box |
| CN104930162A (en) * | 2015-04-03 | 2015-09-23 | 谢秀花 | Speed changing box |
| CN104930133A (en) * | 2015-06-04 | 2015-09-23 | 江苏南车电机有限公司 | Automatic shift decelerator for electrocar |
| CN105041988A (en) * | 2015-08-25 | 2015-11-11 | 重庆青山工业有限责任公司 | Two-gear pure electric automobile transmission |
-
2012
- 2012-04-12 CN CN 201220152530 patent/CN202628958U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375548A (en) * | 2012-04-12 | 2013-10-30 | 周文政 | Automatic two-stage speed changing mechanism for electric vehicle |
| CN103375548B (en) * | 2012-04-12 | 2016-05-04 | 周文政 | Two sections of automatic transmissions of electric motor car |
| CN103438173A (en) * | 2013-09-06 | 2013-12-11 | 重庆和合机电有限公司 | Mechanical self-adapted automatic speed changing device of electric vehicle |
| CN104696487A (en) * | 2013-12-05 | 2015-06-10 | 苏州新成光电器件厂 | Integrated miniature stepping driving gear box |
| CN104930162A (en) * | 2015-04-03 | 2015-09-23 | 谢秀花 | Speed changing box |
| CN104930133A (en) * | 2015-06-04 | 2015-09-23 | 江苏南车电机有限公司 | Automatic shift decelerator for electrocar |
| CN105041988A (en) * | 2015-08-25 | 2015-11-11 | 重庆青山工业有限责任公司 | Two-gear pure electric automobile transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121226 Effective date of abandoning: 20160504 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |