Two-speed transmission for use with electric powered vehicle
First Claim
1. A transmission for use with a high speed electric power source, said transmission comprising an input shaft, clutch means for selectively operatively connecting said input shaft to said electric power source, an input gear secured to said input shaft, a second shaft aligned with and separated from said input shaft, at least one gear fixedly secured to said second shaft, a transfer shaft parallel to said input and second shaft, speed reducer means rotatably mounted on said transfer shaft and operatively interconnecting said input and second shafts, a first gear rotatably mounted on said transfer shaft and meshing with said at least one gear on said second shaft, a synchronizer assembly slidably secured to said transfer shaft and adapted to engage said first gear to rotate said transfer shaft at a first speed, and to cooperate with said speed reducer means to rotate said transfer shaft at a second speed, and a final drive gear secured to said transfer shaft for rotation therewith.
1 Assignment
0 Petitions
Accused Products
Abstract
A manual two-speed automotive transmission adapted to being driven by an electric motor. The transmission includes an input shaft assembly driven by the motor via its armature, a flywheel and a clutch, an input gear assembly axially aligned with and separated from the input shaft assembly, and a transfer shaft assembly parallel to the input assemblies. A two-gear speed reducer rotatably mounted on the transfer shaft assembly connects a fixed gear of the input shaft assembly to a fixed gear of the input gear assembly. Additional gears are rotatably mounted on the transfer shaft assembly and secured to the input gear assembly, such that a synchronizer assembly on the transfer shaft cooperates with the various gears to drive the transfer shaft and a final output gear mounted thereon at a low or high speed. Reverse is accomplished by reversing the electric motor.
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Citations
24 Claims
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1. A transmission for use with a high speed electric power source, said transmission comprising an input shaft, clutch means for selectively operatively connecting said input shaft to said electric power source, an input gear secured to said input shaft, a second shaft aligned with and separated from said input shaft, at least one gear fixedly secured to said second shaft, a transfer shaft parallel to said input and second shaft, speed reducer means rotatably mounted on said transfer shaft and operatively interconnecting said input and second shafts, a first gear rotatably mounted on said transfer shaft and meshing with said at least one gear on said second shaft, a synchronizer assembly slidably secured to said transfer shaft and adapted to engage said first gear to rotate said transfer shaft at a first speed, and to cooperate with said speed reducer means to rotate said transfer shaft at a second speed, and a final drive gear secured to said transfer shaft for rotation therewith.
- 2. A transmission for use with an electric motor having an armature, a flywheel secured to the armature, and a clutch assembly operatively connected to the flywheel, said transmission comprising an input shaft aligned with an selectively secured to the armature by said clutch assembly, an input gear secured to said input shaft, a second shaft aligned with and separated from said input shaft, a first pair of spaced-apart gears fixedly secured to said second shaft, a transfer shaft parallel to said input and second shafts, a speed reducer rotatably mounted on said transfer shaft and including a second pair of spaced interconnected gears of different sizes serving as a second gear, one of which meshes with said input gear on said input shaft and the other of which meshes with one of said first pair of gears on said second shaft, a first gear rotatably mounted on said transfer shaft and meshing with the other of said pair of gears on said second shaft, a synchronizer assembly secured to said transfer shaft intermediate said second and first gears and adapted to being slidably moved on said transfer shaft to selectively secure one of the second and first gears to said transfer shaft to rotate same at predetermined second or first speeds, and a final drive gear secured to said transfer shaft for rotation therewith.
- 13. A transmission for use with an electric motor having an armature, a flywheel secured to the armature, and a clutch assembly operatively connected to the flywheel, said transmission comprising an input shaft aligned with and selectively secured to the armature by said clutch assembly, an input gear secured to said input shaft, a second shaft aligned with and separated from said input shaft, three spaced-apart gears fixedly secured to said second shaft, a transfer shaft parallel to said input and second shafts, a speed reducer rotatably mounted on said transfer shaft and including a pair of interconnected gears of different sizes, one of which meshes with said input gear and the other of which meshes with one of said three gears, a second gear rotatably mounted on said transfer shaft and meshing with another of said three gears, a first gear rotatably mounted on said transfer shaft and meshing with said third of said three gears, a synchronizer assembly secured to said transfer shaft intermediate said second and first gears and adapted to being slidably moved on said transfer shaft to selectively secure one of the second and first gears to said transfer shaft to rotate same at predetermined second or first speeds, and a final drive gear secured to said transfer shaft for rotation therewith.
Specification