Transmission structure of coreless tubular motor

A transmission structure of a coreless tubular motor, comprising a motor main body, the motor main body being connected to one end of a primary gear ring through a motor connecting seat, a motor shaft of the motor main body being connected to a primary planetary gear assembly provided in the primary gear ring, the other end of the primary gear ring being connected to a secondary/tertiary gear ring having a secondary planetary gear assembly and a tertiary planetary gear assembly, an input end of the tertiary planetary gear assembly being connected to an output end of the secondary planetary gear assembly while an output end thereof being connected to an output shaft, wherein the motor main body is a coreless motor;

• a brake driving member and a brake driven member which are coaxially provided are provided in and pass through a brake outer sleeve;
• the brake driving member is connected to an output end of the primary planetary gear assembly, the brake driven member is connected to an input end of the secondary planetary gear assembly, and the brake driving member is in transmission connection with the brake driven member;
• and, a braking assembly connected to the brake driving member and the brake driven member is provided on the inner side of the brake outer sleeve in the circumferential direction,
• wherein the brake outer sleeve is provided between the primary gear ring and the secondary/tertiary gear ring through a circumferential fixation structure,
• wherein the circumferential fixation structure comprises a first concave-convex positioning assembly provided on the outer circumferential side of one end of the brake outer sleeve;
• a first concave-convex mating assembly corresponding to the first concave-convex positioning assembly is provided on the inner circumferential side of one end of the primary gear ring;
• the first concave-convex positioning assembly and the first concave-convex mating assembly are mutually clamped and positioned in the circumferential direction;
• a second concave-convex positioning assembly is provided on the outer circumferential side of the other end of the brake outer sleeve;
• a second concave-convex mating assembly corresponding to the second concave-convex positioning assembly is provided on the inner circumferential side of the secondary/tertiary gear ring;
• and, the second concave-convex positioning assembly and the second concave-convex mating assembly are mutually clamped and positioned in the circumferential direction.