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A platform for research: civil engineering, architecture and urbanism
CORDLESS BLIND APPARATUS AND METHOD OF ADJUSTING A CORDLESS BLIND APPARATUS
The present invention provides a cordless blind apparatus and a method of adjusting the balance of a cordless blind apparatus. The cordless blind apparatus includes a roller, a screen wound or unwound on the roller, and a torsion spring contracting or stretching by rotating with the roller, in which an increasing ratio of torque applied to the roller by the screen and an increasing ratio of torque applied to the roller by the torsion spring are matched to each other through the correlation equation satisfied by parameters as the wire diameter ‘d’ of the torsion spring, the Young's modulus ‘E’ of the torsion spring, the diameter ‘D’ of the torsion spring, the winding number ‘N’ of the torsion spring, the density ‘ρ’ of the screen, the thickness ‘t’ of the screen, the width ‘S’ of the screen, the radius ‘R’ of the roller, and gravitational acceleration ‘g’.
CORDLESS BLIND APPARATUS AND METHOD OF ADJUSTING A CORDLESS BLIND APPARATUS
The present invention provides a cordless blind apparatus and a method of adjusting the balance of a cordless blind apparatus. The cordless blind apparatus includes a roller, a screen wound or unwound on the roller, and a torsion spring contracting or stretching by rotating with the roller, in which an increasing ratio of torque applied to the roller by the screen and an increasing ratio of torque applied to the roller by the torsion spring are matched to each other through the correlation equation satisfied by parameters as the wire diameter ‘d’ of the torsion spring, the Young's modulus ‘E’ of the torsion spring, the diameter ‘D’ of the torsion spring, the winding number ‘N’ of the torsion spring, the density ‘ρ’ of the screen, the thickness ‘t’ of the screen, the width ‘S’ of the screen, the radius ‘R’ of the roller, and gravitational acceleration ‘g’.
CORDLESS BLIND APPARATUS AND METHOD OF ADJUSTING A CORDLESS BLIND APPARATUS
SCHNURLOSE JALOUSIE UND VERFAHREN ZUR EINSTELLUNG EINER SCHNURLOSEN JALOUSIE
APPAREIL À STORE SANS CORDON ET PROCÉDÉ DE RÉGLAGE D'UN APPAREIL À STORE SANS CORDON
JANG SEONG-RYONG (author)
2021-03-24
Patent
Electronic Resource
English
IPC:
E06B
Feste oder bewegliche Abschlüsse für Öffnungen in Bauwerken, Fahrzeugen, Zäunen oder ähnlichen Einfriedungen allgemein, z.B. Türen, Fenster, Läden, Tore
,
FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES, OR LIKE ENCLOSURES, IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
Cordless blind apparatus and method for adjusting cordless blind apparatus
European Patent Office | 2019
Cordless blind apparatus and method for adjusting cordless blind apparatus
| European Patent Office | 2019
Cordless blind apparatus and method for adjusting cordless blind apparatus
| European Patent Office | 2018
CORDLESS BLIND APPARATUS AND METHOD OF ADJUSTING A CORDLESS BLIND APPARATUS
| European Patent Office | 2018
CORDLESS BLIND APPARATUS AND METHOD OF ADJUSTING A CORDLESS BLIND APPARATUS
| European Patent Office | 2018