Patent ID: 8276245

Claim:
A window curtain pull cord concentrator safety device, enabling gathering together of the free ends of a plurality of pull cords of a window curtain set, as well as complete transmission of a pulling force, and in an emergency, instantaneously and easily releases the binding force of the pull cords, thereby rapidly safeguarding limbs entangled in the pull cords, comprising: a drag cup, an upper portion of the drag cup is provided with an opening, and a concave cavity inwardly extends into an interior of the drag cup, a through hole downwardly perforates a cavity bottom of the concave cavity; a pulling member, an upper end of the pulling member connects to a flexible wire hoop body, the wire hoop body penetrates into the concave cavity from a bottom portion of the drag cup by passing through the through hole, and free movement space of the wire hoop body comprises the concave cavity and the opening position; wherein the cavity bottom of the drag cup is provided with a second through hole, enabling two side sections of the wire hoop body to respectively pass through the through hole and the second through hole; the wire hoop body is connected to a junction point of annular form, and is further connected to the pulling member; an arch pressure surface is formed between the through hole and the second through hole corresponding to the surface of the cavity bottom.