Heavy-duty gear with planet structure

Abstract

The invention relates to a heavy-duty gear with a planet structure, which comprises a connecting shaft, wherein one end of the connecting shaft is tightly matched into a centre hole of a gear body. The heavy-duty gear is characterized in that one end of the gear body is provided with an involute gear, an annular convex edge is radially at the other end of the gear body, three holes are uniformly distributed in the convex edge along the periphery surface, and three plant shafts are respectively mounted in the three holes. The left and the right ends of the internal surface of each hole in the convex edge are respectively smooth internal walls, and fine threads are formed in the middle of the internal surface of the hole. A tool withdrawal groove is formed between the involute gear and the convex edge on the gear body. In the structure, a gear of a speed reducing mechanism with an external gear is changed into the heavy-duty gear with the planet structure. The heavy-duty gear with the planet structure is extruded twice into the involute gear, and the strength of each tooth of the involute gear reaches above 28000N; the powder output by an armature shaft is transmitted onto the heavy-duty gear through a plant speed reducing mechanism which comprises the connecting shaft as well as an internal gear and a plant gear on a motor. Through the adoption of the structure, the size of the motor can be reduced, the weight of the motor can be lightened, and the transmission ratio can be increased.

Description

technical field [0001] The invention relates to a heavy-duty gear with a planetary structure, in particular to a heavy-duty gear for an internal reduction mechanism of an electric seat motor assembly. Background technique [0002] After decades of development, my country's auto industry has made great progress. The original manually adjustable seats are gradually changed to electric seats. The electric seat motor assembly must have a deceleration mechanism to output power according to a certain deceleration ratio. The structure at the beginning of foreign import is as follows: image 3 As shown, the power needs to be transmitted to the output gear through the multi-stage transmission of the shaft 6, and the motor has a complex structure and a large volume. In order to keep up with the technical development and supporting needs of the internal combustion engine, electrical appliances industry, and adapt to the development trend of smaller volume, lighter weight, and higher ...

AI Technical Summary

Problems solved by technology

The structure at the beginning of foreign import is as follows image 3 As shown, the power needs to be transmitted to the output gear through the multi-stage transmission of the shaft 6, and the motor structure is complex and the volume is large.

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