Window blind or shade with a secure lock for its lift cord

摘要

The invention relates to a window blind or shade having a secure lock for a lift cord, which includes a head rail (10), a bottom rail (20) and a shading unit (30) combined between the head rail and the bottom rail. The shading unit (30) has plural connecting members (40) respectively engaging with an annular secure lock (50), except the connecting member positioned closest to the bottom rail engaging with a cap-shaped secure lock (60) instead. A lift cord (70) is strung in the annular secure locks (50), with the end fastened with the cap-shaped secure lock (60). An opening (53) is formed in a ring of the annular secure locks (50) and a groove (63) formed in a curved portion of the cap-shaped secure lock (60). Thus, the lift cord (70) can be released if an object is accidentally trapped between the lift cord and the shading unit, achieving a secure effect.