| 摘要 |
An opening restrictor comprises a body portion (1), a securing bracket (3) and a connector (5) secured to the securing bracket and adapted to be releasably secured to the body portion. The body portion is adapted to be secured to a frame of an opening and includes a releasable lock (23) for releasably securing the connector to the body portion. The securing bracket is adapted to be secured to an opening member mounted to the frame between the opening member and a device for controlling opening and closing of the opening member. In this way, opening of the opening member is restricted when the connector is secured to the body portion and is unrestricted when the connector is released from the body portion. |
