TRANSMISSION MECHANISM OF WINDOW COVERING
First Claim
1. A transmission mechanism of a window covering, wherein the window covering includes a headrail, a bottom rail, and a covering between the headrail and the bottom rail, comprising:
- a first lifting cord set having a first reel and a first lifting cord, wherein the first reel is received in the headrail for rotation, and the first lifting cord has opposite ends fastened to the first reel and the bottom rail respectively;
a second lifting cord set having a second reel and a second lifting cord, wherein the second reel is received in the headrail for rotation, and the second lifting cord has opposite ends fastened to the second reel and the bottom rail respectively; and
a driving cord set having a cone reel and a control cord, wherein the cone reel is received in the headrail for rotation to drive the first reel and the second reel to synchronously rotate, and the control cord winds around the cone reel and has a section left out of the headrail for manipulation to rotate the cone reel.
1 Assignment
0 Petitions
Accused Products
Abstract
A transmission mechanism of a window covering includes a first lifting cord set, a second lifting cord set, and a driving cord set. The driving cord set has a cone reel and a control cord, wherein the cone reel has a gradually decreasing dimension, and the control cord winds around the cone reel and has a section left out of the headrail. The first and the second lifting cord sets each has a reel and a lifting cord, wherein the reel is driven by the cone reel, and the lifting cord has opposite ends fastened to the reel and the bottom rail respectively. The cone reel changes a speed and torque of the power transferred to the bottom rail while the user pulls the control cord to lift the bottom cord and the slats of the window covering in an efficient way.
4 Citations
11 Claims
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1. A transmission mechanism of a window covering, wherein the window covering includes a headrail, a bottom rail, and a covering between the headrail and the bottom rail, comprising:
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a first lifting cord set having a first reel and a first lifting cord, wherein the first reel is received in the headrail for rotation, and the first lifting cord has opposite ends fastened to the first reel and the bottom rail respectively; a second lifting cord set having a second reel and a second lifting cord, wherein the second reel is received in the headrail for rotation, and the second lifting cord has opposite ends fastened to the second reel and the bottom rail respectively; and a driving cord set having a cone reel and a control cord, wherein the cone reel is received in the headrail for rotation to drive the first reel and the second reel to synchronously rotate, and the control cord winds around the cone reel and has a section left out of the headrail for manipulation to rotate the cone reel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification