Child safety gate

摘要

A child safety gate having a locking device and a flexible retractable barrier sheet is disclosed. The locking device comprises a locking means having at least a locked position and an unlocked position. The locking means is configured to in its locked position prevent further extraction of the flexible retractable barrier sheet, and the locking means is configured to in its unlocked position allow at least extraction of the flexible retractable barrier sheet. Further, the locking device comprises a timer means configured to upon activation let a delay time elapse and then bring the locking means into its locked position.;An advantage of the locking device is that it provides safe operation of a child safety gate by automatically locking the locking device after a delay time has elapsed.

主权项

1. A child safety gate comprising a flexible retractable barrier sheet mounted to a roll about which said barrier sheet is windable; said roll being rotatable about an axis of rotation; said barrier sheet being movable between an extended position and a retracted position, and a locking device; said locking device comprising
(a) a locking mechanism comprising:
(i) a rotatable cam rotatable about an axis of rotation parallel to the axis of rotation of said roll, said cam having a side surface defining a stop surface and defining a generally spiral-shaped cam surface extending from an inner end of said stop surface to an outer end of said stop surface, said generally spiral-shaped cam surface defining a first radius at said inner end of said stop surface and a second radius larger than said first radius at the outer end of said stop surface;(ii) a lock actuator comprising a generally axially extending body, a to portion of said body defining a cam follower which engages said cam surface and a lock member at a lower portion of said body, said lock member defining a toothed portion of said lock actuator; said lock actuator being movable in a plane generally perpendicular to the axis of rotation of said cam between at least a locked position and an unlocked position by movement of the cam,(iii) a toothed member; said toothed member being generally parallel to said cam and spaced from said cam along said axis of rotation of said cam; said toothed member being operatively connected to said roll to rotate about said axis of rotation of said roll; said toothed member having a toothed surface facing the toothed portion of said lock actuator; wherein when the lock actuator is in its locked position the toothed portion of said lock actuator engages the toothed surface of said toothed member to prevent further unwinding of the flexible retractable barrier sheet, and wherein when the lock actuator is in its unlocked position said toothed portion of said lock actuator is spaced from the toothed surface of said toothed member to allow at least unwinding of the flexible retractable barrier sheet, and(iv) a biasing member which biases said toothed portion of said actuator toward the teeth of said toothed member; and (b) a timer configured to, upon activation, let a delay time elapse and then move the locking mechanism from its unlocked position to its locked position.