CN203717803U - Third gear variable transmission mechanism for electric vehicle - Google Patents
Third gear variable transmission mechanism for electric vehicle Download PDFInfo
- Publication number
- CN203717803U CN203717803U CN201420096345.7U CN201420096345U CN203717803U CN 203717803 U CN203717803 U CN 203717803U CN 201420096345 U CN201420096345 U CN 201420096345U CN 203717803 U CN203717803 U CN 203717803U
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- gear
- ratchet
- sleeve
- driving
- variable transmission
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 22
- 230000007246 mechanism Effects 0.000 title claims abstract description 16
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000010030 laminating Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 6
- 238000000465 moulding Methods 0.000 description 4
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- Structure Of Transmissions (AREA)
Abstract
The utility model discloses a third gear variable transmission mechanism for an electric vehicle. A spindle (1) is freely sleeved with a driving sleeve (3), the periphery of one end of the driving sleeve (3) is freely sleeved with a third gear wheel (4), a second-level reduction driving gear (14) is arranged on the third gear wheel (4), the other end of the driving sleeve (3) is connected with an output splined hub (5), and the middle of the driving sleeve (3) is freely sleeved with a second gear wheel (7) and a first gear wheel (6) side by side; and a double-pawl sliding sleeve (8) is arranged between the second gear wheel (7) and the second-level reduction driving gear (14), and a single-pawl sliding sleeve (9) is arranged between the first gear wheel (6) and the output splined sleeve (5). According to the third gear variable transmission mechanism, only single reduction is adopted when the mechanism operates at a high speed, so that the efficiency is higher than that of a conventional gear shift motor, gear shift is convenient and stable, and larger impact produced during gear shift can be avoided; and the weight of the whole electric vehicle is borne by the spindle, so that the assembling difficulty is reduced, the assembling accuracy is improved, and breakage of a motor shaft can be effectively prevented.
Description
Technical field
The utility model belongs to vehicle technology field, and specifically, particularly three in electric motor car keeps off variable transmission mechanism.
Background technique
At present, the driving mechanism of electric motor car generally adopts two gear speed changes, and existing deficiency is:
1) the reduction speed ratio span between each gear is larger, and reduction speed ratio is 2 left and right; During the too large gearshift of reduction speed ratio span, there will be larger impact force, cause thus electric current moment maximum, be easy to cause control system to damage.
2) two gear gears are by shaft drive power, and axle should bear torque and bear again weight, therefore quite high to the installation precision requirement of axle, have a little a deviation will cause shaft break of motor.
3) no matter two gear gears are top gear or bottom gear is all three grades of decelerations, and it is best that efficient point when high speed operation (output power is divided by input power) is difficult to reach.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of gearshift convenient, steady, can effectively raise the efficiency electric motor car three gear variable transmission mechanisms a little.
The technical solution of the utility model is as follows: a kind of electric motor car three gear variable transmission mechanisms, comprise the main shaft (1) and the countershaft (2) that are arranged in parallel, it is characterized in that: on described main shaft (1), be set with driving sleeve (3), the peripheral empty set three gear gears (4) of this driving sleeve (3) one end, three gear gears (4) are provided with double reduction driving gear (14), the other end of driving sleeve (3) is connected with output spline housing (5), empty set second gear (7) and first gear (6) side by side at the middle part of described driving sleeve (3), two ratchet flip sleeves (8) are set between described second gear (7) and double reduction driving gear (14), described pair of ratchet flip sleeve (8) by spline package on driving sleeve (3), on the opposing end surface of described second gear (7) and double reduction driving gear (14), be provided with the soldered tooth matching with two ratchet flip sleeves (8), between described first gear (6) and output spline housing (5), be provided with single ratchet flip sleeve (9), this list ratchet flip sleeve (9) by spline package on driving sleeve (3), and single ratchet flip sleeve (9) connects by spring (10) and output spline housing (5), at described first gear (6), on the end face of output spline housing (5), is provided with the soldered tooth matching with single ratchet flip sleeve (9), on described countershaft (2), be set with double reduction driven gear (11), two gear driven gears (12) and a gear driven gear (13), described double reduction driven gear (11) and double reduction driving gear (14) engagement, two gear driven gears (12) and second gear (7) engagement, a described gear driven gear (13) and first gear (6) engagement.
Adopt above technological scheme, main shaft is fixed on the car body of electric motor car, and output spline housing is connected with the wheel hub of electric motor car.The power of electric vehicle motor passes to three gear gears and double reduction driving gear by input gear, when two ratchet flip sleeves neither engage with second gear, while not engaging with double reduction driving gear yet, double reduction driving gear drives the rotation of double reduction driven gear, make countershaft, two gear driven gears rotate together with a gear driven gear, two gear driven gears drive second gear idle running, one gear driven gear drives first gear rotation, under the effect of spring force, single ratchet flip sleeve engages with first gear, and rotate with first gear, single ratchet flip sleeve by transmission of power to driving sleeve, make to export spline housing to wheel hub outputting power, the bottom gear of now corresponding electric motor car.
When two ratchet flip sleeves engage with second gear, two gear driven gears drive second gear rotation, one gear driven gear drives first gear rotation, second gear drives driving sleeve to rotate by two ratchet flip sleeves, make to export spline housing to wheel hub outputting power, the middling speed of now corresponding electric motor car gear; Due to the rotating speed of the driving sleeve rotating speed higher than first gear, under the different knockout press effect of rotating speed, the elastic force that single ratchet flip sleeve overcomes spring moves to output spline housing direction, and single ratchet flip sleeve is separated with first gear, and first gear and single ratchet flip sleeve are all dallied.
When two ratchet flip sleeves engage with double reduction driving gear, double reduction driving gear drives driving sleeve to rotate by two ratchet flip sleeves, makes to export spline housing to wheel hub outputting power, the top gear of now corresponding electric motor car; Meanwhile, two gear driven gears drive second gear idle running, one gear driven gear drives first gear rotation, due to the rotating speed of the driving sleeve rotating speed higher than first gear, under the different knockout press effect of rotating speed, the elastic force that single ratchet flip sleeve overcomes spring moves to output spline housing direction, and single ratchet flip sleeve is separated with first gear, and first gear and single ratchet flip sleeve are all dallied.
As can be seen here, the utility model adopts high, medium and low three gears to carry out transmission, reduction speed ratio between each gear can be reduced to 1.5 left and right, gearshift is convenient, steady like this, in the time of can avoiding shifting gears, there is larger impact force, thereby eliminated because of the electric current maximum disadvantage that causes control system to damage of moment.The utility model adopts axle sleeve transferring power, and main shaft only bears weight, does not bear torque, the weight of whole electric vehicle is all born on main shaft, on not impact of the work of motor, has reduced so on the one hand difficulty and the precision of assembling, make assembling simpler, efficiency of assembling is higher; On the other hand, can effectively prevent that motor shaft from rupturing.Meanwhile, the utility model only has primary speed-down when top gear, and it is best that efficient point during high speed operation (output power is divided by input power) can reach, and compares with conventional construction, can improve 4-6 efficient point.
Two ends at described pair of ratchet flip sleeve (8) are symmetrically arranged with the first ratchet, this first ratchet is comprised of a plurality of the first ratchets (8a) that distribute by even circumferential, described the first ratchet (8a) is the block structure of triangle, the height that the first ratchet (8a) protrudes from two ratchet flip sleeve (8) end faces reduces gradually by circumferencial direction, the laminating that can connect with corresponding the first ratchet (8a) of the soldered tooth on described second gear (7) or double reduction driving gear (14).
On two ratchet flip sleeves the first ratchet adopt the block structure of triangle, moulding is simple on the one hand, processing and fabricating is easy, intensity is reliable; On the other hand, the end face that the first ratchet protrudes from two ratchet flip sleeves is that working surface is ramp structure, when two ratchet flip sleeves engage with corresponding shift gear, soldered tooth on each first ratchet and shift gear is fitted face-to-face, by frictional force, carry out transmission, not only guarantee the reliability of transmission, and made gearshift easier, convenient, can effectively avoid beating tooth.
Described the first ratchet (8a) is structure as a whole with two ratchet flip sleeves (8), and the working surface of the first ratchet (8a) is arc surface.Above structure is conducive to processing and fabricating, and the working surface of the first ratchet adopts arc surface to engage with corresponding shift gear, and joint is tightr, transmission is more reliable, and separated being very easy to.
For convenient, be connected with shift fork, at the middle part of described pair of ratchet flip sleeve (8) outer peripheral surface, have annular groove.
At described single ratchet flip sleeve (9), on the end face of first gear (6), be provided with the second ratchet, this second ratchet is comprised of a plurality of the second ratchets (9a) that distribute by even circumferential, described the second ratchet (9a) is the block structure of triangle, the height that the second ratchet (9a) protrudes from single ratchet flip sleeve (9) end face reduces gradually by circumferencial direction, the soldered tooth on described first gear (6) can with the second ratchet (9a) laminating that connects.
The second ratchet on single ratchet flip sleeve adopts the block structure of triangle, and moulding is simple on the one hand, and processing and fabricating is easy, and intensity is reliable; On the other hand, the end face that the second ratchet protrudes from single ratchet flip sleeve is that working surface is ramp structure, when single ratchet flip sleeve engages with first gear, soldered tooth on each second ratchet and first gear is fitted face-to-face, by frictional force, carry out transmission, not only guaranteed the reliability of transmission, and separated more convenient, quick.As preferably, the working surface of the second ratchet is also arc surface.
On the outer peripheral surface of described single ratchet flip sleeve (9), be fixed with eccentricity balance-weight block (15), utilize centrifugal force can make single ratchet flip sleeve separated with first gear quicker, thereby further improved the convenience of gearshift.
Described eccentricity balance-weight block (15) is ring block structure, and fixes by bolt and single ratchet flip sleeve (9).Above structure on the one hand eccentricity balance-weight block moulding simple, be easy to processing and fabricating, cost is low; On the other hand, eccentricity balance-weight block dismounting is convenient, and it is firm to be connected with single ratchet flip sleeve, and it is very convenient to change eccentricity balance-weight block.
Beneficial effect: efficient point during the utility model high speed operation (output power is divided by input power) can reach best, and it is convenient, steady to shift gears, in the time of can avoiding shifting gears, there is larger impact force, thereby eliminated because of the electric current maximum disadvantage that causes control system to damage of moment; The weight of whole electric vehicle is all born on main shaft, on not impact of the work of motor, has both reduced difficulty and the precision of assembling, can effectively prevent that again motor shaft from rupturing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of single ratchet flip sleeve.
Fig. 3 is the plan view of Fig. 2.
Fig. 4 is the structural representation of two ratchet flip sleeves.
Fig. 5 is the plan view of Fig. 4.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail:
As shown in Figure 1, the main shaft 1 being connected with electric motor car car body maintains static, and this main shaft 1 parallels with countershaft 2, and countershaft 2 can freely rotate.On described main shaft 1, be set with driving sleeve 3, this driving sleeve 3 can be with respect to main shaft 1 rotation.Described driving sleeve 3 is the peripheral empty set three gear gears 4 of left end as shown, and the right-hand member of this three gears gear 4 arranges double reduction driving gear 14, and double reduction driving gear 14 and three gear gears 4 can be integrative-structures, can be also the split-type structurals being solidly installed.The right-hand member of described driving sleeve 3 is connected with output spline housing 5, output spline housing 5 by spline package on driving sleeve 3, and output spline housing 5 is connected with the wheel hub of electric motor car, in the time of driving sleeve 3 rotation, can drive output spline housing 5 to rotate together, to the wheel hub outputting power of electric motor car.
As shown in Figure 1, Figure 4, Figure 5, empty set second gear 7 and first gear 6 side by side at the middle part of driving sleeve 3, second gear 7 is positioned at the left side of first gear 6.Two ratchet flip sleeves 8 are set between described second gear 7 and double reduction driving gear 14, this pair of ratchet flip sleeve 8 by spline package on driving sleeve 3.At the two ends of described pair of ratchet flip sleeve 8, be symmetrically arranged with the first ratchet, this first ratchet is comprised of a plurality of the first ratchet 8a that distribute by even circumferential, the first ratchet 8a is structure as a whole with two ratchet flip sleeves 8, the number of the first ratchet 8a is definite according to actual needs, and the present embodiment is preferably 10.Described the first ratchet 8a is the block structure of triangle, and the height that the first ratchet 8a protrudes from two ratchet flip sleeve 8 end faces (i.e. the working surface of the first ratchet 8a) reduces gradually by circumferencial direction, and the working surface of the first ratchet 8a is arc surface.
As shown in Figure 1, Figure 4, Figure 5, in the left side of described second gear 7 and the right side of double reduction driving gear 14 be equipped with the soldered tooth matching with the first ratchet 8a, the number of described soldered tooth equates with the first ratchet 8a, the position of soldered tooth is relative with the first ratchet 8a, the shape of soldered tooth and the first ratchet 8a adapt, and described soldered tooth can engage in relative mode of fitting with the first ratchet 8a.Middle part at described pair of ratchet flip sleeve 8 outer peripheral surfaces has annular groove, for being connected with shift fork, under the stirring of shift fork, two ratchet flip sleeves 8 can left and right slippage on driving sleeve 3, engage with second gear 7 selectively, or engage with double reduction driving gear 14, or simultaneously separated with second gear 7 and double reduction driving gear 14.
As shown in Figure 1, Figure 2, Figure 3 shows, at first gear 6 and output, be provided with single ratchet flip sleeve 9 between spline housing 5, this list ratchet flip sleeve 9 by spline package on driving sleeve 3.Described single ratchet flip sleeve 9 and output arrange spring 10 between spline housing 5, these spring 10 ring sets on main shaft 1, the left end of spring 10 and single ratchet flip sleeve 9 butts, the right-hand member of spring 10 with export spline housing 5 and connect.In the left side of described single ratchet flip sleeve 9, be formed with the second ratchet, this second ratchet is comprised of a plurality of the second ratchet 9a that distribute by even circumferential, the center of circle of the second ratchet circumference that 9a surrounds is on the axis of single ratchet flip sleeve 9, the number of the second ratchet 9a is definite according to actual needs, and the present embodiment is preferably 10.Described the second ratchet 9a is the block structure of triangle, and the height that the second ratchet 9a protrudes from single ratchet flip sleeve 9 end faces (i.e. the working surface of the second ratchet 9a) reduces gradually by circumferencial direction, and the working surface of the second ratchet 9a is arc surface.On the outer peripheral surface of described single ratchet flip sleeve 9, be provided with eccentricity balance-weight block 15, this eccentricity balance-weight block 15 is ring block structure, and fixes by bolt and single ratchet flip sleeve 9.
As shown in Figure 1, Figure 2, Figure 3 shows, in the right side of first gear 6, be formed with the soldered tooth matching with the second ratchet 9a, the number of this soldered tooth equates with the second ratchet 9a, the position of soldered tooth is relative with the second ratchet 9a, the shape of soldered tooth and the second ratchet 9a adapt, and described soldered tooth can engage in relative mode of fitting with the second ratchet 9a.
As shown in Figure 1, be set with successively from left to right double reduction driven gear 11, two gear driven gears 12 and a gear driven gear 13 on countershaft 2, double reduction driven gear 11, two gear driven gears 12 and a gear driven gear 13 all coordinate with countershaft 2 by spline.Described double reduction driven gear 11 and 14 engagements of double reduction driving gear, two gear driven gears 12 and second gear 7 engagements, a described gear driven gear 13 and first gear 6 engagements.
The utlity model has high, medium and low three gears, specific as follows:
When two ratchet flip sleeves 8 neither engage with second gear 7, while not engaging with double reduction driving gear 14 yet, double reduction driving gear 14 drives 11 rotations of double reduction driven gear, make countershaft 2, two gear driven gears 12 rotate together with a gear driven gear 13, two gear driven gears 12 drive second gear 7 idle running, one gear driven gear 13 drives first gear 6 rotations, under the effect of spring 10 elastic force, single ratchet flip sleeve 9 engages with first gear 6, and rotate with first gear 6, single ratchet flip sleeve 9 by transmission of power to driving sleeve 3, make to export spline housing 5 to wheel hub outputting power, the bottom gear of now corresponding electric motor car.
When two ratchet flip sleeves 8 engage with second gear 7, double reduction driving gear 14 drives 11 rotations of double reduction driven gear, countershaft 2, two gear driven gears 12 are rotated together with a gear driven gear 13, two gear driven gears 12 drive second gear 7 rotations, one gear driven gear 13 drives first gear 6 rotations, second gear 7 drives driving sleeve 3 rotations by two ratchet flip sleeves 8, makes to export spline housing 5 to wheel hub outputting power, the middling speed of now corresponding electric motor car gear; Due to the rotating speed of driving sleeve 3 rotating speed higher than first gear 6, under the different knockout press effect of rotating speed, the elastic force that single ratchet flip sleeve 9 overcomes spring 10 moves to output spline housing 5 directions, and single ratchet flip sleeve 9 is separated with first gear 6, and first gear 6 and single ratchet flip sleeve 9 are all dallied.
When two ratchet flip sleeves 8 engage with double reduction driving gear 14, double reduction driving gear 14 drives driving sleeve 3 rotations by two ratchet flip sleeves 8, makes to export spline housing 5 to wheel hub outputting power, the top gear of now corresponding electric motor car; Meanwhile, double reduction driving gear 14 drives 11 rotations of double reduction driven gear, countershaft 2, two gear driven gears 12 are rotated together with a gear driven gear 13, two gear driven gears 12 drive second gear 7 idle running, one gear driven gear 13 drives first gears 6 rotations, due to the rotating speed of driving sleeve 3 rotating speed higher than first gear 6, under the different knockout press effect of rotating speed, single ratchet flip sleeve 9 is separated with first gear 6, and first gear 6 and single ratchet flip sleeve 9 are all dallied.
Although below by reference to the accompanying drawings preferred embodiment of the present utility model is described, but the utility model is not limited to above-mentioned embodiment, above-mentioned embodiment is only schematic rather than determinate, those of ordinary skill in the art is under enlightenment of the present utility model, under the prerequisite without prejudice to the utility model aim and claim, can make like multiple types and representing, as change flip sleeve ratchet moulding and number, or change combination of flip sleeve and corresponding gear etc., within such conversion all falls into protection domain of the present utility model.
Claims (7)
1. an electric motor car three keeps off variable transmission mechanisms, comprise the main shaft (1) and the countershaft (2) that are arranged in parallel, it is characterized in that: on described main shaft (1), be set with driving sleeve (3), the peripheral empty set three gear gears (4) of this driving sleeve (3) one end, three gear gears (4) are provided with double reduction driving gear (14), the other end of driving sleeve (3) is connected with output spline housing (5), empty set second gear (7) and first gear (6) side by side at the middle part of described driving sleeve (3), two ratchet flip sleeves (8) are set between described second gear (7) and double reduction driving gear (14), described pair of ratchet flip sleeve (8) by spline package on driving sleeve (3), on the opposing end surface of described second gear (7) and double reduction driving gear (14), be provided with the soldered tooth matching with two ratchet flip sleeves (8), between described first gear (6) and output spline housing (5), be provided with single ratchet flip sleeve (9), this list ratchet flip sleeve (9) by spline package on driving sleeve (3), and single ratchet flip sleeve (9) connects by spring (10) and output spline housing (5), at described first gear (6), on the end face of output spline housing (5), is provided with the soldered tooth matching with single ratchet flip sleeve (9), on described countershaft (2), be set with double reduction driven gear (11), two gear driven gears (12) and a gear driven gear (13), described double reduction driven gear (11) and double reduction driving gear (14) engagement, two gear driven gears (12) and second gear (7) engagement, a described gear driven gear (13) and first gear (6) engagement.
2. electric motor car three according to claim 1 keeps off variable transmission mechanisms, it is characterized in that: the two ends at described pair of ratchet flip sleeve (8) are symmetrically arranged with the first ratchet, this first ratchet is comprised of a plurality of the first ratchets (8a) that distribute by even circumferential, described the first ratchet (8a) is the block structure of triangle, the height that the first ratchet (8a) protrudes from two ratchet flip sleeve (8) end faces reduces gradually by circumferencial direction, the laminating that can connect with corresponding the first ratchet (8a) of soldered tooth on described second gear (7) or double reduction driving gear (14).
3. electric motor car three gear variable transmission mechanisms according to claim 2, is characterized in that: described the first ratchet (8a) is structure as a whole with two ratchet flip sleeves (8), and the working surface of the first ratchet (8a) is arc surface.
4. according to the electric motor car three gear variable transmission mechanisms described in claim 1 or 2 or 3, it is characterized in that: the middle part at described pair of ratchet flip sleeve (8) outer peripheral surface has annular groove.
5. electric motor car three according to claim 1 keeps off variable transmission mechanisms, it is characterized in that: at described single ratchet flip sleeve (9), on the end face of first gear (6), be provided with the second ratchet, this second ratchet is comprised of a plurality of the second ratchets (9a) that distribute by even circumferential, described the second ratchet (9a) is the block structure of triangle, the height that the second ratchet (9a) protrudes from single ratchet flip sleeve (9) end face reduces gradually by circumferencial direction, the soldered tooth on described first gear (6) can with the second ratchet (9a) laminating that connects.
6. electric motor car three gear variable transmission mechanisms according to claim 5, is characterized in that: on the outer peripheral surface of described single ratchet flip sleeve (9), be fixed with eccentricity balance-weight block (15).
7. electric motor car three gear variable transmission mechanisms according to claim 6, is characterized in that: described eccentricity balance-weight block (15) is ring block structure, and fixes by bolt and single ratchet flip sleeve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420096345.7U CN203717803U (en) | 2014-03-04 | 2014-03-04 | Third gear variable transmission mechanism for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420096345.7U CN203717803U (en) | 2014-03-04 | 2014-03-04 | Third gear variable transmission mechanism for electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203717803U true CN203717803U (en) | 2014-07-16 |
Family
ID=51156956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420096345.7U Withdrawn - After Issue CN203717803U (en) | 2014-03-04 | 2014-03-04 | Third gear variable transmission mechanism for electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203717803U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836128A (en) * | 2014-03-04 | 2014-06-04 | 李红波 | Three-gear variable speed transmission mechanism of electrocar |
| WO2016192484A1 (en) * | 2015-05-29 | 2016-12-08 | 精进电动科技（北京）有限公司 | Automatic transmission |
| CN108506469A (en) * | 2018-06-30 | 2018-09-07 | 如皋市招财牛车业有限公司 | Electric vehicle gearshift |
-
2014
- 2014-03-04 CN CN201420096345.7U patent/CN203717803U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836128A (en) * | 2014-03-04 | 2014-06-04 | 李红波 | Three-gear variable speed transmission mechanism of electrocar |
| CN103836128B (en) * | 2014-03-04 | 2016-08-17 | 重庆绿华电动车有限公司 | Electric motor car three keeps off variable transmission mechanism |
| WO2016192484A1 (en) * | 2015-05-29 | 2016-12-08 | 精进电动科技（北京）有限公司 | Automatic transmission |
| US10533639B2 (en) | 2015-05-29 | 2020-01-14 | Jing-Jin Electric Technologies Co., Ltd. | Automatic transmission |
| CN108506469A (en) * | 2018-06-30 | 2018-09-07 | 如皋市招财牛车业有限公司 | Electric vehicle gearshift |
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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: 20140716 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |