CN111878547A - Electric vehicle variable speed driving system with automatic feedback speed regulation - Google Patents
Electric vehicle variable speed driving system with automatic feedback speed regulation Download PDFInfo
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- CN111878547A CN111878547A CN202010534741.3A CN202010534741A CN111878547A CN 111878547 A CN111878547 A CN 111878547A CN 202010534741 A CN202010534741 A CN 202010534741A CN 111878547 A CN111878547 A CN 111878547A
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- gear
- shaft
- spline
- loose
- electric vehicle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
Abstract
The invention provides an electric vehicle variable-speed driving system with automatic feedback speed regulation, and belongs to the field of electric vehicles. It comprises an input shaft, a connecting shaft and an output shaft, wherein the input shaft, the connecting shaft and the output shaft are arranged in parallel, the input shaft and the connecting shaft are meshed and connected through two input gears which are meshed with each other, a plurality of gear fixed gears which are sequentially arranged along the axial direction of the connecting shaft are arranged on the connecting shaft, each gear fixed gear is meshed and connected with a gear loose gear, the gear loose gear is rotationally connected with an output shaft, each gear loose gear corresponds to a gear connecting mechanism arranged on the output shaft, the gear connecting mechanism is connected with the corresponding gear loose gear so as to drive the output shaft to rotate, each gear connecting mechanism is connected with a gear adjusting mechanism, the gear adjusting mechanism is driven to connect or disconnect the gear connecting mechanism and the corresponding gear loose gear, and comprises a push rod connected with the corresponding gear connecting mechanism.
Description
Technical Field
The invention belongs to the field of electric vehicles, and particularly relates to an electric vehicle variable speed driving system with automatic feedback speed regulation.
Background
The electric vehicle is a vehicle driven by electric power and powered by electric power. The electric vehicle as a travel tool has the advantages of environmental friendliness, low dependence on petroleum and the like, and is increasingly emphasized in modern society advocating energy conservation.
Since electric vehicles are driven by electric power and the amount of electric power in the electric power device of each electric vehicle is constant, it is necessary to reduce energy consumption as much as possible when shifting gears and to reduce energy consumption when shifting gears at an appropriate speed or traction force in order to increase the number of kilometers that can be traveled. However, most of the devices have complex structures, are not compact enough in space installation, are not smooth enough in gear shifting, are easy to have the phenomenon of power interruption between gear shifting, cause the continuity of the dynamic property of the vehicle body in the driving process, improve the power consumption, and cause the energy waste, thereby improving the battery cost, reducing the driving range, being not beneficial to the energy conservation, and having poor economical efficiency.
Therefore, there is a need for an improved transmission driving system for an electric vehicle, which has a compact and simple structure and is capable of smoothly shifting gears.
For example, chinese patent document discloses a two-gear manual transmission driving system for an electric vehicle [ patent application No.: the transmission comprises a power input shaft, a power output shaft, a fast-gear driving gear, a fast-gear driven gear, a slow-gear driving gear and a slow-gear driven gear, wherein a gear engaging device is arranged between the fast-gear driven gear and the slow-gear driven gear and sleeved on the power output shaft in an axially-sliding circumferential transmission mode. Compared with an automatic gear, a manual gear is tired of city driving; one more clutch link, increased fault point and other disadvantages.
Disclosure of Invention
The invention aims to solve the problems and provides a variable speed driving system with automatic feedback speed regulation for an electric vehicle.
In order to achieve the purpose, the invention adopts the following technical scheme:
an electric vehicle variable speed driving system with automatic feedback speed regulation comprises an input shaft, a connecting shaft and an output shaft, the input shaft, the connecting shaft and the output shaft are arranged in parallel, the input shaft and the connecting shaft are meshed and connected through two mutually meshed input gears, the connecting shaft is provided with a plurality of gear fixed gears which are sequentially arranged along the axial direction of the connecting shaft, each gear fixed gear is engaged and connected with a gear loose gear, the gear loose gear is rotationally connected with the output shaft, each gear loose gear corresponds to a gear connecting mechanism arranged on the output shaft, the gear connecting mechanism is connected with the corresponding gear loose gear so as to drive the output shaft to rotate, each gear connecting mechanism is connected with a gear adjusting mechanism, the gear adjusting mechanism is driven to connect or disconnect the gear connecting mechanism and the corresponding gear loose gear, and comprises a push rod connected with the corresponding gear connecting mechanism.
In the above-mentioned electric motor car variable speed drive system with automatic feedback speed governing, gear adjustment mechanism include the regulating spindle, the central line of regulating spindle set up with the central line of output shaft is perpendicular, the end connection that keeps away from gear coupling mechanism of each push rod has the protruding cake that sets up at the regulating spindle, just the push rod can link to each other with the regulating spindle.
In the above-mentioned electric vehicle variable speed drive system with automatic feedback speed regulation, in the axial direction of the regulating shaft, a plurality of convex cakes are arranged in sequence along the axial direction of the regulating shaft; and on the projection of the axial direction of the adjusting shaft, a plurality of convex cakes are arranged in sequence at equal intervals along the outer ring of the adjusting shaft.
In the above-mentioned electric motor car variable speed drive system with automatic feedback speed governing, the outer lane of each protruding cake is sunken to have the round to extend to the spout on the regulating spindle, the cross section of spout personally submit circular-arc, the push rod keep away from the end connection of gear coupling mechanism have the ball that slides in corresponding spout.
In foretell electric motor car variable speed drive system with automatic feedback speed governing, gear coupling mechanism including setting up the integral key shaft on the output shaft, the integral key shaft spline and the splined connection have a spline circle, the spline circle can overlap under the gear adjustment mechanism that corresponds and establish corresponding gear loose gear and be connected with this gear loose gear meshing, the outer terminal surface of spline circle still rotate and be connected with the lasso, the lasso link to each other with the push rod that corresponds.
In the above-mentioned electric vehicle variable speed drive system with automatic feedback speed regulation, an engaging ring arranged on the gear loose gear is arranged between the spline ring and the corresponding gear loose gear, and the spline ring can be engaged with the corresponding engaging ring.
In foretell electric motor car variable speed actuating system with automatic feedback speed governing, the meshing circle outer lane be equipped with the straight-tooth that a plurality of equidistant set gradually, the straight-tooth tip that is close to corresponding spline circle be equipped with and sink into the tooth, the tooth of sinking into be most advanced form, and this most advanced orientation corresponding spline circle.
In the electric vehicle speed change driving system with automatic feedback speed regulation, a distance rod is connected between the ferrule and the push rod, the distance rod and the adjusting shaft are axially arranged in parallel, and the lengths of the distance rods are different.
In the above-mentioned electric motor car variable speed drive system with automatic feedback speed governing, a plurality of spline circle from one end of output shaft to the other end links to each other with a plurality of spline circle from one end of regulating spindle to the other end in proper order.
In the above-mentioned electric vehicle variable speed drive system with automatic feedback speed governing, the distance between every two adjacent gear loose gears is the same, and there is a clearance between the spline shaft and the gear loose gears on both sides.
Compared with the prior art, the invention has the advantages that:
1. the gear connecting mechanism is connected with the corresponding gear loose gear so as to drive the output shaft to rotate, each gear connecting mechanism is connected with a gear adjusting mechanism, and the gear connecting mechanisms are connected with or disconnected from the corresponding gear loose gears under the driving of the gear adjusting mechanisms. The gear adjusting mechanism can automatically adjust gears.
2. A plurality of convex cakes are sequentially arranged along the axial direction of the adjusting shaft in the axial direction of the adjusting shaft; and on the projection of the axial direction of the adjusting shaft, a plurality of convex cakes are arranged in sequence at equal intervals along the outer ring of the adjusting shaft. When one of the convex cakes is connected with the corresponding push rod, the rest push rods are connected with the adjusting shaft, only one gear loose gear is connected with the corresponding gear connecting mechanism during each work or speed change, and along with the rotation of the adjusting shaft, the plurality of spline rings can be connected with the corresponding gear loose gear in sequence, so that the gears gradually rise or fall.
Drawings
FIG. 1 is an overall schematic view of the present invention;
FIG. 2 is a schematic view of another orientation of the adjustment axis;
FIG. 3 is a schematic view of the connection of the chute to the slider;
fig. 4 is a schematic structural view of the spur teeth and the recessed teeth on the meshing ring.
In the figure: the gear shifting mechanism comprises an input shaft 10, a connecting shaft 11, an output shaft 12, an input gear 13, a gear fixing gear 14, a gear shifting movable gear 15, a gear connecting mechanism 16, a gear adjusting mechanism 17, a push rod 18, an adjusting shaft 19, a convex cake 20, a sliding chute 21, a sliding ball 22, a spline shaft 23, a spline ring 24, a ferrule 25, a meshing ring 26, straight teeth 27, sinking teeth 28 and a spacing rod 29.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1-4, an electric vehicle speed-changing driving system with automatic feedback speed regulation comprises an input shaft 10, a connecting shaft 11 and an output shaft 12, wherein the input shaft 10, the connecting shaft 11 and the output shaft 12 are arranged in parallel, the input shaft 10 and the connecting shaft 11 are meshed and connected through two input gears 13 which are meshed with each other, the connecting shaft 11 is provided with a plurality of gear fixed gears 14 which are sequentially arranged along the axial direction of the connecting shaft 11, each gear fixed gear 14 is meshed and connected with a gear loose gear 15, the gear loose gear 15 is rotatably connected with the output shaft 12, each gear loose gear 15 corresponds to a gear connecting mechanism 16 arranged on the output shaft 12, the gear connecting mechanisms 16 are connected with the corresponding gear loose gears 15 so as to drive the output shaft 12 to rotate, each gear connecting mechanism 16 is connected with a gear adjusting mechanism 17, the gear connecting mechanism 16 is connected with or disconnected from the corresponding gear loose gear 15 under the driving of the gear adjusting mechanism 17, and the gear adjusting mechanism 17 comprises a push rod 18 connected with the corresponding gear connecting mechanism 16.
In the invention, when the gearbox works, an input shaft rotates under the work of a rotating motor, a connecting shaft 11 is driven to rotate through two input gears 13 which are meshed with each other, a plurality of gear loose gears 15 are always in a rotating state because gear fixed gears 14 are meshed with the gear loose gears 15 one by one, the gear loose gears 15 are in rotating connection with an output shaft 12, when the gear connecting mechanisms 16 are not connected with the corresponding gear loose gears 15, the output shaft 12 does not rotate, when one gear connecting mechanism 16 is connected with the corresponding gear loose gear 15 under the pushing action of a push rod 18, the output shaft 12 is driven to rotate along with the gear loose gear 15, and only one gear loose gear 15 is connected with the corresponding gear connecting mechanism 16 during each work or speed change.
The gear adjusting mechanism 17 comprises an adjusting shaft 19, the central line of the adjusting shaft 19 is perpendicular to the central line of the output shaft 12, a convex cake 20 arranged on the adjusting shaft 19 is connected to the end part of each push rod 18 far away from the gear connecting mechanism 16, and the push rods 18 can be connected with the adjusting shaft 19.
In the present invention, each push rod 18 can be connected with a convex cake 20 and an adjusting shaft 19, when the gear connecting mechanism 16 is not connected with the corresponding gear loose gear 15, the push rod 18 slides on the adjusting shaft 19, when the adjusting shaft 19 rotates to make the push rod 18 slide on the corresponding convex cake 20, the convex cake 20 rotates with the adjusting shaft 19 continuously to push the push rod 18, so that the push rod 18 pushes the gear connecting mechanism 16 to be connected with the corresponding gear loose gear 15, thereby realizing the rotation of the output shaft 12, during the speed changing process, the gear connecting mechanism 16 and the gear loose gear 15 which are being connected are disconnected after the corresponding push rod 18 is connected with the adjusting shaft 19, and the other push rod 18 connects the corresponding gear connecting mechanism 16 with the gear loose gear 15 when being connected with the corresponding convex cake 20.
In addition, the adjusting shaft 19 is connected with a central processing unit, a gear signal collector of a gearbox, a motor controller and a battery management system of the electric vehicle. The central processing unit carries out algorithm processing analysis on the set parameters and the running state parameters through the set parameters and the running state parameters of the motor controller, the electric vehicle battery management system and the gearbox, obtains a control instruction according to a preset rule, and sends the control instruction to the gearbox and the motor controller to enable the adjusting shaft 19 to correspondingly rotate, so that multi-gear automatic speed change control is realized.
In the axial direction of the adjusting shaft 19, a plurality of convex cakes 20 are sequentially arranged along the axial direction of the adjusting shaft 19; and on the projection of the axial direction of the adjusting shaft 19, a plurality of convex cakes 20 are arranged in sequence at equal intervals along the outer ring of the adjusting shaft 19.
In the present invention, when one of the convex cakes 20 is connected with the corresponding push rod 18, the rest push rods 18 are connected with the adjusting shaft 19, and only one gear loose gear 15 is connected with the corresponding gear connecting mechanism 16 in each work or speed change.
The outer ring of each convex cake 20 is sunken with a circle of sliding grooves 21 extending to the adjusting shaft 19, the cross sections of the sliding grooves 21 are arc-shaped, and the end parts of the push rods 18 far away from the gear connecting mechanisms 16 are connected with sliding balls 22 sliding in the corresponding sliding grooves 21.
In the present invention, the push rod 18 is always connected to the cam 20 and the adjustment shaft 19 in such a manner that the slide ball 22 slides in the slide groove 21.
The gear connecting mechanism 16 comprises a spline shaft 23 arranged on the output shaft 12, the spline shaft 23 is provided with a spline and is in spline connection with a spline ring 24, the spline ring 24 can be sleeved on the corresponding gear loose gear 15 under the driving of the corresponding gear adjusting mechanism 17 and is in meshing connection with the gear loose gear 15, the outer end face of the spline ring 24 is also in rotary connection with a ferrule 25, and the ferrule 25 is connected with the corresponding push rod 18.
In the present invention, in the process that the push rod 18 pushes the gear connecting mechanism 16 to connect with the corresponding gear loose gear 15, the push rod 18 pushes the spline ring 24 to move towards the direction close to the corresponding gear loose gear 15, and finally the gear loose gear 15 enters the spline ring 24 and is engaged with the spline ring 24, at this time, the spline ring 24 is also in splined connection with the spline shaft 23, so that the rotating gear loose gear 15 drives the output shaft 12 to rotate.
And an engaging ring 26 arranged on the gear position loose gear 15 is arranged between the spline ring 24 and the corresponding gear position loose gear 15, and the spline ring 24 can be meshed and connected with the corresponding engaging ring 26.
In order to improve the transmission efficiency and reduce the wear of the gears, the gear loose gear 15 and the gear fixed gear 14 are often engaged by using helical gears, but the helical gears cannot be engaged with splines, so in the present invention, the spline ring 24 is engaged with the engaging ring 26 fixed on the gear loose gear 15 to generate a connection relationship with the gear loose gear 15.
The outer ring of the meshing ring 26 is provided with a plurality of straight teeth 27 which are arranged at equal intervals in sequence, the end part of each straight tooth 27 close to the corresponding spline ring 24 is provided with a sinking tooth 28, the sinking tooth 28 is in a tip shape, and the tip end faces the corresponding spline ring 24.
In the invention, in the process that the spline ring 24 moves and is meshed with the meshing ring 26, the spline teeth on the spline ring 24 move between the two sunk teeth 28 firstly, and because the sunk teeth 28 are in a tip shape, the straight spline teeth are firstly propped against the inclined surfaces of the sunk teeth 28, the spline teeth are smoothly meshed and connected with the straight teeth 27 under the guiding action of the inclined surfaces, and the abrasion caused by the tooth grinding phenomenon can not be generated.
A spacing rod 29 is connected between the ferrule 25 and the push rod 18, the spacing rod 29 and the adjusting shaft 19 are axially arranged in parallel, and the lengths of the spacing rods 29 are different.
In the present invention, each of the pushers 18 is independent of each other and does not affect each other.
The plurality of spline rings 24 from one end to the other end of the output shaft 12 are connected in turn with the plurality of spline rings 24 from one end to the other end of the adjustment shaft 19.
In the invention, along with the rotation of the adjusting shaft 19, a plurality of spline rings 24 can be sequentially connected with the corresponding gear loose gears 15, so that the gears are gradually raised or lowered.
The distance between every two adjacent gear position loose gears 15 is the same, and a gap is reserved between the spline shaft 23 and the gear position loose gears 15 on the two sides.
The working principle of the invention is as follows: the input shaft rotates under the work of the rotating motor, the connecting shaft 11 is driven to rotate through two input gears 13 which are meshed with each other, because the gear fixed gears 14 are meshed with the gear loose gears 15 one by one, so that a plurality of gear loose gears 15 are always in a rotating state, when the adjusting shaft 19 rotates to enable the push rod 18 to slide on the corresponding convex cake 20, the cam disc 20 continues to rotate with the adjustment shaft 19 and can push the push rod 18, the push rod 18 pushes the spline 24 to move towards the direction close to the corresponding shift position loose gear 15, and finally, the gear loose gear 15 enters the spline ring 24 and is meshed and connected with the spline ring 24, at the moment, the spline ring 24 is also in splined connection with the spline shaft 23, therefore, the rotating gear loose gear 15 drives the output shaft 12 to rotate, and along with the rotation of the adjusting shaft 19, the plurality of spline rings 24 can be sequentially connected with the corresponding gear loose gear 15, so that the gears gradually rise or fall.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the terms input shaft 10, connecting shaft 11, output shaft 12, input gear 13, fixed gear 14, movable gear 15, shift connection 16, shift adjustment 17, push rod 18, adjustment shaft 19, lug 20, slide groove 21, slide ball 22, spline shaft 23, spline ring 24, collar 25, meshing ring 26, spur 27, recessed teeth 28, distance rod 29, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (10)
1. An electric vehicle variable speed driving system with automatic feedback speed regulation comprises an input shaft (10), a connecting shaft (11) and an output shaft (12), wherein the input shaft (10), the connecting shaft (11) and the output shaft (12) are arranged in parallel, the input shaft (10) and the connecting shaft (11) are meshed and connected through two input gears (13) which are meshed with each other, the electric vehicle variable speed driving system is characterized in that a plurality of gear fixing gears (14) are sequentially arranged along the axial direction of the connecting shaft (11) on the connecting shaft (11), each gear fixing gear (14) is meshed and connected with a gear loose gear (15), each gear loose gear (15) is rotatably connected with the output shaft (12), each gear loose gear (15) corresponds to a gear connecting mechanism (16) arranged on the output shaft (12), and the gear connecting mechanisms (16) are connected with the corresponding gear loose gears (15) to drive the output shaft (12) to rotate, each gear connecting mechanism (16) is connected with a gear adjusting mechanism (17), the gear connecting mechanisms (16) are connected with or disconnected from corresponding gear loose gears (15) under the driving of the gear adjusting mechanisms (17), and each gear adjusting mechanism (17) comprises a push rod (18) connected with the corresponding gear connecting mechanism (16).
2. The variable speed driving system with the automatic feedback speed regulation function for the electric vehicle as claimed in claim 1, wherein the gear position adjusting mechanism (17) comprises an adjusting shaft (19), the center line of the adjusting shaft (19) is perpendicular to the center line of the output shaft (12), a convex cake (20) arranged on the adjusting shaft (19) is connected to the end of each push rod (18) far away from the gear position connecting mechanism (16), and the push rods (18) can be connected with the adjusting shaft (19).
3. The variable speed driving system of the electric vehicle with the automatic feedback speed regulation as claimed in claim 2, characterized in that a plurality of convex cakes (20) are sequentially arranged along the axial direction of the adjusting shaft (19) in the axial direction of the adjusting shaft (19); and on the projection of the axial direction of the adjusting shaft (19), a plurality of convex cakes (20) are arranged in sequence at equal intervals along the outer ring of the adjusting shaft (19).
4. The variable speed driving system of the electric vehicle with the automatic feedback speed regulation according to claim 2, characterized in that a circle of sliding groove (21) extending to the adjusting shaft (19) is recessed on the outer ring of each convex cake (20), the cross section of the sliding groove (21) is arc-shaped, and the end of the push rod (18) far away from the gear connecting mechanism (16) is connected with a sliding ball (22) sliding in the corresponding sliding groove (21).
5. The electric vehicle variable-speed drive system with the automatic feedback speed regulation function according to claim 1 is characterized in that the gear connecting mechanism (16) comprises a spline shaft (23) arranged on the output shaft (12), the spline shaft (23) is provided with a spline and is in spline connection with a spline ring (24), the spline ring (24) can be sleeved on the corresponding gear loose gear (15) under the driving of the corresponding gear adjusting mechanism (17) and is in meshed connection with the gear loose gear (15), the outer end face of the spline ring (24) is further rotatably connected with a ferrule (25), and the ferrule (25) is connected with the corresponding push rod (18).
6. The variable speed drive system of the electric vehicle with the automatic feedback speed regulation as claimed in claim 5, characterized in that an engaging ring (26) arranged on the gear loose gear (15) is arranged between the spline ring (24) and the corresponding gear loose gear (15), and the spline ring (24) can be engaged and connected with the corresponding engaging ring (26).
7. The system of claim 6, wherein the outer ring of the meshing ring (26) is provided with a plurality of straight teeth (27) which are arranged in sequence at equal intervals, the end part of each straight tooth (27) close to the corresponding spline ring (24) is provided with a sinking tooth (28), and each sinking tooth (28) is in a tip shape and faces the corresponding spline ring (24).
8. The electric vehicle variable speed driving system with the automatic feedback speed regulation function according to claim 5, characterized in that a spacing rod (29) is connected between the ferrule (25) and the push rod (18), the spacing rod (29) is axially parallel to the adjusting shaft (19), and the length of the spacing rods (29) is different.
9. The variable speed drive system of the electric vehicle with automatic feedback speed regulation according to claim 5, characterized in that a plurality of spline rings (24) from one end to the other end of the output shaft (12) are connected with a plurality of spline rings (24) from one end to the other end of the adjusting shaft (19) in sequence.
10. The variable speed driving system of the electric vehicle with the automatic feedback speed regulation according to claim 5, characterized in that the distance between every two adjacent gear step loose gears (15) is the same, and a gap is formed between the spline shaft (23) and the gear step loose gears (15) at two sides.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010534741.3A CN111878547A (en) | 2020-06-12 | 2020-06-12 | Electric vehicle variable speed driving system with automatic feedback speed regulation |
| PCT/CN2020/096416 WO2021248514A1 (en) | 2020-06-12 | 2020-06-16 | Electric vehicle variable speed drive system with automatic feedback speed regulation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010534741.3A CN111878547A (en) | 2020-06-12 | 2020-06-12 | Electric vehicle variable speed driving system with automatic feedback speed regulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111878547A true CN111878547A (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010534741.3A Pending CN111878547A (en) | 2020-06-12 | 2020-06-12 | Electric vehicle variable speed driving system with automatic feedback speed regulation |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111878547A (en) |
| WO (1) | WO2021248514A1 (en) |
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| CN202992046U (en) * | 2012-07-20 | 2013-06-12 | 重庆隆旺机电有限责任公司 | Electric vehicle two-gear manual variable speed driving system |
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| CN205937752U (en) * | 2016-08-24 | 2017-02-08 | 石家庄市藁城区飞宏机械有限公司 | Mechanical transmission case of variable -ratio |
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2020
- 2020-06-12 CN CN202010534741.3A patent/CN111878547A/en active Pending
- 2020-06-16 WO PCT/CN2020/096416 patent/WO2021248514A1/en active Application Filing
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| US5503039A (en) * | 1991-11-12 | 1996-04-02 | Zf Friedrichshafen Ag | Motor vehicle gearbox |
| JP2007024150A (en) * | 2005-07-14 | 2007-02-01 | Aisin Ai Co Ltd | Shift device for transmission |
| CN103671865A (en) * | 2012-09-24 | 2014-03-26 | 现代自动车株式会社 | Apparatus for shifting gears of a transmission |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2021248514A1 (en) | 2021-12-16 |
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Application publication date: 20201103 |
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