LIFTING DEVICE OF CORDLESS COVERING

摘要

A lifting device of a cordless covering includes a cord reel, a car, a driving module, a connecting cord, and a lifting cord. The cord reel has a cone section, and is pivoted on a headrail for free rotation. The car is received in the headrail for reciprocation. The driving module is received in the headrail to drive the cord reel to rotate in a predetermined direction. The connecting cord has opposite ends connected to the car and the cord reel, wherein the connecting cord is reeled in and out of the cone section of the cord reel when the cord reel rotates in different directions. The lifting cord runs around the car, and then extends out of the headrail to be fastened to a bottom rail. The cord reel and the driving module are helpful to precisely stop and bottom rail at any desired position.

主权项

1. A lifting device of a cordless covering, wherein the cordless covering includes a headrail, a bottom rail, and a covering material between the headrail and the bottom rail, comprising:
a cord reel having a cone section, wherein the cord reel is pivoted on the headrail to rotate in a first direction and in a second direction, and a diameter of the cone section decreases from an end to an opposite end; a car received in the headrail to be moved toward or away from the cord reel; a driving module received in the headrail to drive the cord reel to rotate in the first direction; a connecting cord having opposite ends connected to the car and the cord reel, wherein the connecting cord is reeled in the cone section of the cord reel when the cord reel rotates in the first direction, and the connecting cord is reeled out from the cone section of the cord reel when the cord reel rotates in the second direction; and a lifting cord, an end running around the car, and an opposite end extending out of the headrail to be fastened to the bottom rail, whereby the car moves away from the cord reel to drive the cord reel to rotate in the second direction while the bottom rail is moved away from the headrail.