Gear transmission mechanism and robot arm connecting structure using the same

摘要

A gear transmission mechanism includes a housing, a first transmission assembly, a second transmission assembly, and a gear clearance adjustment assembly. The first transmission assembly includes an input shaft, and the second transmission assembly includes an output shaft. The gear clearance adjustment assembly includes an adjustment base mounted on the housing, fasteners, bearings, a washer, a fixing member, and a pair of freely rotatable adjusting gears for the transmission of rotative force. The adjusting gears mesh with the first and second transmission gears.

主权项

1. A gear transmission mechanism, comprising:
a housing; a first transmission assembly positioned in the housing, the first transmission assembly comprising:
an input shaft positioned in the housing; anda first transmission gear sleeving on the input shaft; a second transmission assembly positioned in the housing and separated from the first transmission assembly, the second transmission assembly comprising:
an output shaft positioned in the housing; anda second transmission gear sleeving on the output shaft; and a gear clearance adjustment assembly positioned in the housing between the first transmission assembly and the second transmission assembly, the gear clearance adjustment assembly comprising:
an adjustment base mounted on the housing, the adjustment base defining an adjustment hole;a fastener passing through the adjustment hole and the housing to fix the adjustment base on the housing; andan adjusting gear rotatably positioned on the adjustment base, and the adjusting gear meshing with the first transmission gear and the second transmission gear, wherein a width of the adjustment hole along a direction substantially perpendicular to the rotation axis of the adjusting gear is greater than a diameter of the fastener, thereby the adjustment base is adjustably mounted on the housing, clearances between the adjustment gear and the first transmission gear, and between the adjustment gear and the second transmission gear, are adjustable by changing positions of the adjustment base along an axis perpendicular to a line of centers of the first transmission gear and the second transmission gear.