Special speed reducer for hub motor

Abstract

The invention provides a special speed reducer for a hub motor and belongs to the technical field of speed reducers. The special speed reducer for the hub motor comprises an outer hub, a bracket, a planetary mechanism, an input shaft and a frame. The frame is arranged in the outer hub. The input shaft is arranged in the middle of the frame and is sleeved with the bracket through a bearing. The planetary mechanism is arranged between the input shaft and the frame. The input shaft is sleeved with a sun gear. A planetary shaft is fixedly arranged on the bracket and sleeved with a planetary gear. An independent unit is arranged to facilitate later modular production, and the production cost is lowered. A spigot is arranged on the bracket. The spigot has the taper. The spigot is matched with a spigot matching position of the outer hub and is connected with the planetary shaft through a compression nut. Torque is output through the planetary shaft, so that the output torque is larger. As the spigot and the spigot matching position both have the tapers, and the two tapers are matched with each other, so that locating is more accurate, mounting is faster and firmer, and higher axial load can be borne.

Description

technical field [0001] The invention relates to the technical field of speed reducers, in particular to a special speed reducer for hub motors. Background technique [0002] In recent years, with the development of the automobile industry and the strengthening of people's awareness of environmental protection, people hope to manufacture transportation tools with low energy consumption, low emission, and non-traditional energy consumption. Therefore, electric vehicles at home and abroad have emerged as the times require. [0003] Electric vehicles are more efficient, quieter and produce fewer emissions than conventional vehicles powered by internal combustion engines. As the vanguard of sustainable industrial development and new energy development, the electric vehicle industry is already an inevitable trend in the future development of the automotive industry. However, due to the technical defects of the existing electric vehicles, the manufactured products are difficult to...

AI Technical Summary

Problems solved by technology

Although some in-wheel motors have solved the problem of small output torque by setting reducers, some reducers and in-wheel motors are integrated, which is not conducive to the modular production of reducers, high cost and low efficiency, and most reducers are compatible with The connection of the outer hub is unreasonable, resulting in the problem that the output moment arm is too small and the later installation is inconvenient, and it cannot bear a larger axial load

[0004] To sum up, the current hub reducers on the market have the problems of high production efficiency, low cost, large output torque, fast installation, and ability to withstand large axial loads.

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