CORD WINDING STRUCTURE FOR WINDOW BLIND
First Claim
1. A cord winding structure for window blind, comprising a cord winding assembly composed of:
- a first plate member being provided with a guide rod support bracket unit, which is upward projected from one side of the first plate member, and a first hole set;
a guide rod being provided with a plurality of holes that radially extend through the guide rod, and being rotatably rested on the guide rod support bracket unit;
a second plate member being provided with a plurality of pulley sets, which are located on one side of the second plate member facing toward the first plate member, and a second hole set;
a first shaft having two ends separately engaged with the first and the second hole set to thereby connect to the first and the second plate member;
a second shaft having two ends separately engaged with the first and the second hole set to thereby connect to the first and the second plate member;
a first guiding wheel having a first cord receiving groove, a top portion and a first shaft hole; and
the first shaft hole axially extending through the first guiding wheel and being rotatably fitted around the first shaft;
a second guiding wheel having a first receiving space and a second shaft hole; and
the second shaft hole axially extending through the second guiding wheel and being rotatably fitted around the second shaft;
a first spiral spring being fitted in the first receiving space of the second guiding wheel with an end fixedly connected to the second guiding wheel and another end extended to fasten to the first guiding wheel; and
a first cord being wound around the guide rod, the pulley sets, and the first cord receiving groove.
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Accused Products
Abstract
A cord winding structure for window blind includes a cord winding assembly composed of a first and a second plate member, a guide rod, a first and a second shaft, a first and a second guiding wheel, and a spiral spring. The first plate member has a guide rod support bracket unit upward projected from one side thereof for supporting the guide rod thereon. The second plate member has a plurality of pulley sets provided thereon. The first and second guiding wheels are rotatably connected to between the first and the second plate member via the first and the second shaft, respectively. The spiral spring is fitted to one side of the second guiding wheel with an end extended to fasten to the first guiding wheel. A first cord is wound around the guide rod, the pulley sets and a first cord receiving groove of the first guiding wheel.
53 Citations
12 Claims
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1. A cord winding structure for window blind, comprising a cord winding assembly composed of:
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a first plate member being provided with a guide rod support bracket unit, which is upward projected from one side of the first plate member, and a first hole set; a guide rod being provided with a plurality of holes that radially extend through the guide rod, and being rotatably rested on the guide rod support bracket unit; a second plate member being provided with a plurality of pulley sets, which are located on one side of the second plate member facing toward the first plate member, and a second hole set; a first shaft having two ends separately engaged with the first and the second hole set to thereby connect to the first and the second plate member; a second shaft having two ends separately engaged with the first and the second hole set to thereby connect to the first and the second plate member; a first guiding wheel having a first cord receiving groove, a top portion and a first shaft hole; and
the first shaft hole axially extending through the first guiding wheel and being rotatably fitted around the first shaft;a second guiding wheel having a first receiving space and a second shaft hole; and
the second shaft hole axially extending through the second guiding wheel and being rotatably fitted around the second shaft;a first spiral spring being fitted in the first receiving space of the second guiding wheel with an end fixedly connected to the second guiding wheel and another end extended to fasten to the first guiding wheel; and a first cord being wound around the guide rod, the pulley sets, and the first cord receiving groove. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification