Patent ID: 7938237
Filing Date: 2011-05-10
Classification: F16D

Abstract:
1. A brake structure for a main shaft of a direct drive torque motor, comprising: a body; a direct drive torque motor mounted in the body; a main shaft assembled in the direct drive torque motor; and a brake assembly being disposed between the body and the main shaft and having a brake oil room, a brake deformation wall being formed in the brake oil room and located correspondingly to a direction of the main shaft, the brake oil room utilizing its high pressure caused deformation to the brake deformation wall for achieving a braking effect by pressing the main shaft, wherein the brake oil room of the brake assembly positioned against the main shaft is annular-shaped, and the brake assembly includes a brake seat subassembly and a plurality of O-shaped rings, in a center of the brake seat subassembly is defined a hole for insertion of the main shaft, a positioning portion is formed in an outer side of the brake seat subassembly for fixing the body, the annular brake oil room is defined in an inner periphery of the hole, the brake deformation wall is formed between the annular brake oil room and the main shaft, the plurality of O-shaped rings is disposed at the positions against the main shaft and the positioning portion, an oil hole opens outward and is defined in the annular brake oil room.