Patent ID: 6647819
Filing Date: 2003-11-18
Classification: F16H,Y10T

Abstract:
A transmission assembly adapted to drive a ceiling-mounted TV support having a fixing plate and a moving plate provided with a display, the transmission assembly comprising:a motor (11) with a worm (111) and a worm gear (112) mated with the worm (111) and having a small gear (113) integrally formed on top of the worm gear (112); a drive gear (12) mated with the small gear (113) and having a rod (13) extending through the center of the drive gear (12); a biasing spring (14) mounted around the rod (13); a control gear (15) sandwiching the biasing spring (14) with the drive gear (12); a first transmission gear (161) mated with the control gear (15); a second transmission gear (162) mated with the first transmission gear (161); a third transmission gear (163) mated with the second transmission gear (162); a first guiding gear (17) adapted to be rotatably mounted on the fixing plate and being mated with the third transmission gear (163); and a second guiding gear (22) mounted on the moving plate and being mated with the first guiding gear (17); wherein the biasing force of the biasing spring (14) between the control gear and the drive gear is able to be released so as to disengage the rotation between the drive gear and the control gear.