CURTAIN STRUCTURE WITHOUT DRAWSTRING

• US 20140262063A1
• Filed: 03/18/2013
• Published: 09/18/2014
• Est. Priority Date: 03/18/2013
• Status: Active Grant

• Current Assignee: Hua-Chi Huang
• Original Assignee: Hua-Chi Huang
• Inventors: Huang, Hua-Chi
• Granted Patent: US 8,936,062 B2
• Time in Patent Office: Days
• US Class Current: 160/84.02
• CPC Class Codes: E06B 2009/2625 Pleated screens, e.g. concertina- or accordion-like
• CPC Class Codes: E06B 2009/2627 Cellular screens, e.g. box or honeycomb-like
• CPC Class Codes: E06B 2009/3222 Cordless, i.e. user interface without cords
• 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 curtain structure without drawstring may include a curtain unit, a string scrolling base and an upper cover. The string scrolling base has a shell disposed in the base of the curtain unit, center portion of the shell having a shaft, both sides of which having a positioning shaft, and a line slot formed on both side walls of the positioning shaft, wherein upper periphery of rotating base has driving teeth having at least one groove, restricting guiding groove and arc rail groove on top surface thereof, and a driving unit is disposed on the positioning shafts, the driving unit having a rod to secure the string collecting bodies, and conjugating teeth are linked with the driving teeth of the rotating base; and an upper cover having a restricting groove corresponding to the rotating base, and a ball restricted in the groove of the restricting groove and the rotating base.

Claims

1. A curtain structure without drawstring comprising

a curtain unit, having a base, curtain pieces disposed downward therefrom, two string collecting bodies used to drive the curtain unit and a board disposed on a bottom portion thereof;

a string scrolling base having a shell disposed in the base of the curtain unit, center portion of the shell having a shaft, both sides of which having a positioning shaft, and a line slot formed on both side walls of the positioning shaft, wherein the shaft and a rotating base are hingedly coupled, and a spring is disposed between the shaft and rotating base, and upper periphery of the rotating base has driving teeth having at least one groove on a top surface thereof, wherein next to the groove is a restricting guiding groove, and an arc rail groove is next to the restricting guiding groove, and a driving unit is disposed on the positioning shafts, the driving unit having a rod to secure the string collecting bodies, and conjugating teeth are linked with the driving teeth of the rotating base; and

an upper cover corresponding to the shell, having a restricting groove corresponding to the rotating base, and a ball restricted in the groove of the restricting groove and the rotating base.

2. The curtain structure without drawstring of claim 1, wherein two positioning slots are disposed in the base of the curtain unit, and bottom of the shell of the string scrolling base has protruding ribs, so as to secure the string scrolling base inside the base.

3. The curtain structure without drawstring of claim 1, wherein peripheries of the shaft and positioning shaft are surrounded by positioning wall and restricting wall.

4. The curtain structure without drawstring of claim 1, wherein a shaft slot is formed downwardly from the shaft, and an engaging portion is formed outside the rotating base, so that the spring can be connected and disposed between the shaft and rotating base.