Device for winding suspension cord of blind

• US 20080099157A1
• Filed: 10/30/2006
• Published: 05/01/2008
• Est. Priority Date: 10/30/2006
• Status: Abandoned Application

• Current Assignee: Nien Made Enterprises Company Limited
• Original Assignee: Nien Made Enterprises Company Limited
• Inventors: Wen, Yu-Che, Chang, Chih-Yao, Nien, Ming, Pon, David, Ren, Judkins
• Application Number:
  US11/589,106
• Publication Number:
  US 20080099157A1
• Time in Patent Office: Days
• US Class Current: 160/84.05
• CPC Class Codes: E06B 2009/3225 Arrangements to aid the winding of cords rollers
• CPC Class Codes: E06B 2009/3227 Axially moving rollers
• CPC Class Codes: E06B 9/322 Details of operating devices, e.g. pulleys, brakes, spring drums, drives operating devices E06B9/68 ; devices of general interest specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material B65H75/34

Abstract

A device for winding a suspension cord of a blind is provided to wind a suspension cord disposed on a blind. The suspension cord is spirally wound about a cord spool through a spiral guide groove of a guide component, and then arranged along the cord spool in sequence. Additionally, when the cord spool is connected to a power resilient element as a power source of rotation, friction force is applied to the cord spool through an adjusting component to adjust the output torque of the cord spool, such that the torque applied to the cord spool by the power resilient element can be balanced out with the torque applied to the cord spool by the gravity of the blind.

Claims

1. A device for winding a suspension cord of a blind, used for winding a suspension cord passing through at least one covering material of a blind, comprising:

a power resilient element;

a pedestal;

a cord spool, pivoted to the pedestal, wherein one end of the cord spool is connected to the power resilient element, such that the cord spool rotates and winds the suspension cord, and a taper is formed on the surface of the cord spool;

a guide means, having a guide portion for guiding the suspension cord to be wound about the taper and arranging the suspension cord along the cord spool in sequence;

a rotating shaft, connecting the power resilient elements and the cord spool; and

an adjusting means, disposed on the pedestal, wherein the adjusting means moves along a predetermined direction to press against the cord spool, so as to damp the rotation of the cord spool, and balance out the torque applied to the cord spool by each of the power resilient elements and the gravity applied to the cord spool by the blind covering material.

2. The device for winding a suspension cord of a blind as claimed in claim 1, wherein the suspension cord passes through the pedestal and the guide means to enter the guide portion.

3. The device for winding a suspension cord of a blind as claimed in claim 1, wherein the guide portion is a spiral guide groove corresponding to the circumferential surface of the cord spool to be spiral, and the spiral guide groove guides the suspension cord to be spirally wound about the cord spool.

4. The device for winding a suspension cord of a blind as claimed in claim 1, wherein the rotating shaft passes though a predetermined part of the cord spools and the power resilient element.

5. The device for winding a suspension cord of a blind as claimed in claim 1, wherein the adjusting means comprises:

a fixed plate, fixed on the pedestal;

a tablet, pressing against the surface of the cord spool;

a knob, having a screw axis extending from one end thereof, wherein the screw axis is screw-connected to the fixed plate and connected to the tablet, and the distance between the tablet and the fixed plate is adjusted through rotating the knob; and

a resilient element, disposed between the tablet and the fixed plate, for constantly applying a force toward the cord spool to the tablet.

6. The device for winding a suspension cord of a blind as claimed in claim 1, wherein the adjusting means comprises:

a knob, having a screw axis extending from one end thereof, wherein the screw axis is screw-connected to the pedestal;

a tablet, disposed at one end of the screw axis opposite to the pedestal, wherein the distance between the tablet and the pedestal is changed with the rotation of the knob; and

a resilient element, disposed between the pedestal and the tablet, for constantly applying a force toward the cord spool to the tablet.

7. The device for winding a suspension cord of a blind as claimed in claim 1, wherein the adjusting means comprises:

a knob, having a screw axis extending from one end thereof, wherein the screw axis is screw-connected to the pedestal; and

a tablet, pivoted on one end of the rotating shaft opposite to the pedestal, wherein the distance between the tablet and the pedestal is changed with the rotation of the knob.

8. The device for winding a suspension cord of a blind as claimed in claim 7, wherein the adjusting means further comprises:

a fixed plate, fixed in the pedestal, for enabling the predetermined part of the tablet to be slidably fitted on the pedestal, and for the knob being connected to the pedestal.

9. The device for winding a suspension cord of a blind as claimed in claim 1, further comprising a cover, wherein one end of the cover is buckled in the pedestal, the other end of the cover is pivoted to one end of the cord spool far away from the pedestal, such that the cord spool is rotated smoothly, and an accommodation space is formed between the cover and the cord spool to accommodate the suspension cord wound about the outer edge of the cord spool.

10. A module for winding a suspension cord of a blind, used to wind a suspension cord passing through at least one covering material of a blind, comprising:

a pedestal;

a cord spool, pivoted to the pedestal for wounding the suspension cord, wherein a taper is formed on the surface of the cord spool;

a guide means, having a guide portion for guiding the suspension cord to be wound about the taper by an angle and arranging the suspension cord along the cord spool in sequence; and

a rotating shaft, passing through the cord spool and used to drive the cord spool to be rotated.

11. The module for winding a suspension cord of a blind as claimed in claim 10, wherein the suspension cord passes through the pedestal and the guide means to enter the guide portion.

12. The module for winding a suspension cord of a blind as claimed in claim 10, further comprising a cover, wherein one end of the cover is gripped in the pedestal, the other end of the cover is pivoted to one end of the cord spool far away from the pedestal, such that the cord spool is rotated smoothly, and an accommodation space is formed between the cover and the cord spool to accommodate the suspension cord wound about the outer edge of the cord spool.