System and device for window covering system

Patent metadata

Field	Value
Publication number	US-10451145-B2
Application number	US-201715407214-A
Country	US
Kind code	B2
Filing date	Jan 16, 2017
Priority date	Jan 22, 2016
Publication date	Oct 22, 2019
Grant date	Oct 22, 2019

Abstract

A damping adjustment device for adjusting a damping force to a window covering system while the window covering system is expanding, wherein the damping adjustment device comprises a damping module comprising first and second damping units. The damping force is outputted by the damping module to the window covering system when the first and second damping units generate an interaction force in between by a relative motion therebetween. An adjusting module is connected to the damping module for operating with the damping module simultaneously, wherein the damping force from the damping module is adjusted by the adjusting module altering a relative position of the first damping unit and the second damping unit when the relative motion occurs therebetween. A window covering system comprises the damping adjustment device, wherein expansion speed of a covering material of the window covering system can be effectively controlled and adjusted by the damping adjustment device.

First claim

What is claimed is:

1. A damping adjustment device for outputting a damping force to a window covering system in an adjustable manner while the window covering system is expanding, comprising:
a damping module which comprises a first damping unit and a second damping unit, wherein the first damping unit and the second damping unit are adapted to have a relative motion to generate an interaction force therebetween, by which the damping module outputs the damping force to the window covering system; and
an adjusting module connected to the damping module for operating with the damping module simultaneously, wherein the adjusting module is adapted to alter a relative position of the first damping unit and the second damping unit when the first damping unit and the second damping unit have the relative motion, whereby to change the interaction force therebetween and therefore adjust the damping force outputted from the damping module;
wherein the adjusting module comprises a shifting assembly connected to the first damping unit for moving the first damping unit in order to alter the relative position of the first damping unit and the second damping unit;
wherein the adjusting module further comprises a connecting rod with two ends, wherein the shifting assembly is connected to one end and the second damping unit is connected to the other end, whereby the shifting assembly and the second damping unit are configured to operate simultaneously for altering the relative position of the first damping unit and the second damping unit;
wherein the second damping unit comprises a rotation axis, and the second damping unit rotates about the rotation axis; the connecting rod is parallel to the rotation axis of the second damping unit.

2. The damping adjustment device according to claim 1 , wherein the shifting assembly is configured to move the first damping unit along a shifting axis of the shifting assembly in an axial direction of the shifting axis in order to alter the relative position of the first damping unit and the second damping unit for changing the interaction force between the first damping unit and the second damping unit.

3. The damping adjustment device according to claim 2 , the first damping unit is positioned coaxially with the shifting assembly, wherein the shifting assembly is configured to rotate and drive the first damping unit to rotate about the shifting axis simultaneously.

4. The damping adjustment device according to claim 3 , the first damping unit is positioned between the shifting assembly and the second damping unit.

5. The damping adjustment device according to claim 2 , wherein the rotation axis of the second damping unit is coaxial to the shifting axis, wherein the second damping unit is configured to operate simultaneously with the shifting assembly, wherein the interaction force between the first damping unit and the second damping unit is changed when the shifting assembly moves the first damping unit relative to the second damping unit in an axial direction of the rotation axis and when the second damping unit rotates about the rotation axis.

6. The damping adjustment device according to claim 2 , wherein the rotation axis of the second damping unit is substantially perpendicular to the shifting axis, and the second damping unit is configured to operate simultaneously with the shifting assembly; the shifting assembly is configured to move the first damping unit relative to the second damping unit in a radial direction of the rotation axis while the second damping unit rotates about the rotation axis, whereby the interaction force between the first damping unit and the second damping unit is changed.

7. The damping adjustment device according to claim 2 , wherein the interaction force is generated by the first damping unit and the second damping unit within an overlapping area between the first damping unit and the second damping unit, the rotation axis of the second damping unit comprises is substantially perpendicular to the shifting axis, and the second damping unit is connected to the shifting assembly for operating simultaneously with the shifting assembly, wherein the interaction force between the first damping unit and the second damping unit is changed when the second damping unit rotates about the rotation axis and the shifting assembly alters the overlapping area.

8. The damping adjustment device according to claim 2 , wherein the shifting assembly further comprises a threaded rod which is parallel or coaxial to the shifting axis, wherein the threaded rod is connected to the first damping unit and configured to drive the first damping unit to move along the shifting axis in an axial direction of the shifting axis, whereby the relative position of the first damping unit and the second damping unit is altered by the shifting assembly in order to change the interaction force between the first damping unit and the second damping unit.

9. The damping adjustment device according to claim 1 , wherein one of the first damping unit and the second damping unit comprises a magnetic unit, and the other one of the first damping unit and the second damping unit comprises a conductive unit; the interaction force is an electromagnetic induction force which is generated between the magnetic unit and the conductive unit when the relative motion occurs in between, wherein the electromagnetic induction force is changed when the relative position of the magnetic unit and the conductive unit is altered by the adjusting module.

10. The damping adjustment device according to claim 1 , the interaction force is a frictional force generated by the relative motion between the first damping unit and the second damping unit when the first damping unit and the second damping unit are in contact with each other, wherein the frictional force is changed when the relative position of the first damping unit and the second damping unit is altered by the adjusting module.

11. The damping adjustment device according to claim 10 , wherein the second damping unit comprises an elastic component which comprises the rotation axis, and the first damping unit comprises an inner wall which is partially frustoconical, wherein the elastic component is in contact with the inner wall; the frictional force is generated between the elastic component and the inner wall by the elastic component rotating about the rotation axis of the elastic component, wherein the frictional force is changed as a radial length of the elastic component is varied by the inner wall when the relative position of the elastic component and the inner wall is altered by the adjusting module.

12. The damping adjustment device according to claim 11 , the elastic component comprises an elastic unit and a friction block connected to the elastic unit, wherein the friction block is in contact with the inner wall, whereby the frictional force is generated between the friction block and the inner wall while rotation of the elastic component.

13. The damping adjustment device according to claim 1 , the damping module further comprises a fluid between the first damping unit and the second damping unit, wherein the interaction force which is a fluid resistance is generated by the relative motion between the first damping unit and the second damping unit within an overlapping area between the first damping unit and the second damping unit, wherein the fluid resistance is changed when the adjusting module alters the relative position between the first damping unit and the second damping unit and change the overlapping area between the first damping unit and the second damping unit.

14. A window covering system, comp

Assignees

• Nien Made Entpr Co Ltd

Inventors

• Chen Lin
• Nien Keng-Hao

Classifications

• E06B9/80

  Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling (securing devices or arrangements for direct manual operation E06B9/78) · CPC title

• B65H75/486

  Arrangements or adaptations of the spring motor · CPC title

• E06B2009/807

  Brakes preventing fast screen movement · CPC title

• F16F2224/045

  magnetorheological · CPC title

• E06B2009/3222

  Cordless, i.e. user interface without cords · CPC title