Gearshift of electric car automatic speed transmission
A technology of automatic transmission and shifting device, which is applied in the direction of transmission control, toothed components, belts/chains/gears, etc. It can solve the problems of many control links, bulky, cumbersome operation, etc., to reduce production costs, Simple and compact structure, small weight and volume
Inactive Publication Date: 2011-03-23
力帆科技(集团)股份有限公司
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Problems solved by technology
[0003] 1. Using a manual transmission, the cable mechanism is controlled through the cooperation of the clutch pedal and the shift lever, so that the shift fork slides on the guide rod, and the shift fork pushes the synchronizer sleeve to change the meshing object to realize shifting, not only the control link Many, cumbersome manipulation, poor shifting reliability, and the complex structure and bulky manual transmission will increase the cost and weight of electric vehicles
[0004] 2. The automatic clutch transmission is adopted. Although the gear shifting operation is simple, the structure of the automatic clutch transmission is very complicated, the control is difficult, and it has a great impact on the reliability of the shifting gear. The disadvantage is that the automatic clutch transmission is very expensive, which will greatly increase the power consumption. The cost of the car is not conducive to the use and promotion of electric vehicles
Method used
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[0019] Below in conjunction with accompanying drawing and embodiment, the present invention will be further described:
[0020] like figure 1 , figure 2 As shown, the present invention consists of a synchronizer engaging tooth sleeve 1, a shift fork 2, a guide rod 3, a cam 4, a connecting shaft 5, a housing 6, a worm wheel 7, a worm 8, a motor 9, a steel wire 10, a cage 11 and a bushing 12 and other components. Wherein the housing 6 is a box-shaped structure with one end open and the other closed, and the open end of the housing 6 is sealed by an end cover 13 . A motor 9 is installed on the housing 6 , the output end of the motor 9 extends into the housing 6 , and the output shaft of the motor 9 is connected with the worm 8 in the housing 6 . The worm 8 meshes with the worm wheel 7, the worm wheel 7 is also located in the housing 6, and is sleeved on the inner end of the connecting shaft 5, and a steel wire 10 is threaded radially on the connecting shaft 5, and the steel w...
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The invention relates to a gear shift device for an automatic transmission of an electric automobile, which comprises a synchronizer joining toothed sleeve, a shifting fork, a guide rod, a cam, a connecting shaft, a shell, a worm wheel, a worm rod and a motor, wherein the shifting fork is movably sleeved on the guide rod; a clamping foot arranged on the lower part of the shifting fork is clamped and matched with an annular groove on the circumference of the synchronizer joining toothed sleeve; the upper part of the shifting fork is symmetrically provided with a pair of upper clamping feet which are clamped and matched with the cam; the cam is fixedly sleeved on the connecting shaft which extends into the shell, and the part extended into the shell is sleeved with the worm wheel; and the worm wheel is engaged with the worm rod which is connected with an output shaft of the motor. The gear shift device is simple in control, few in controlling units, high in gear shift reliability, simple and compact in structure, easy in assembly, light in weight and low manufacturing cost, can effectively reduce the production cost of the electric automobile, and is favorable for the use and popularization of the electric automobile.
Description
technical field [0001] The invention belongs to the technical field of automobiles, and in particular relates to a shifting device for an automatic transmission of an electric vehicle. Background technique [0002] At present, new energy vehicles are becoming a development hotspot, especially the development of electric vehicles has become the focus of new energy vehicle development. For the transmission of electric vehicles, the general practice of various automobile manufacturers is to adapt the manual transmission or automatic clutch transmission on fuel vehicles and copy them to electric vehicles. The shortcomings are: [0003] 1. Using a manual transmission, the cable mechanism is controlled through the cooperation of the clutch pedal and the shift lever, so that the shift fork slides on the guide rod, and the shift fork pushes the synchronizer sleeve to change the meshing object to realize shifting, not only the control link Many, cumbersome manipulation, poor shiftin...
Claims
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IPC IPC(8): F16H61/32
Inventor 许南绍夏先明
Owner 力帆科技(集团)股份有限公司