| 摘要 |
A security device 14 comprises: a first securing means 16 mounted to the frame 12 of a wing 10 and a second securing means 20 mounted to the wing 10, a strap 22 is secured to the first securing means 16 and releasably secured to the second securing means 20 thus restricting the opening of the wing 10 with respect to frame 12, the device can be decoupled manually, for example by push button 32 and also by means of a lock, for example a key 64 inserted in a cylinder lock 60 preferably installed on the external face of wing 10 to enable the device to be unlocked from the outside. Preferably the connector 50 of strap 22 is spring biased 80 to eject the connector 50 upon release, the connector also being tapered and having annular groove for engagement with spring biased latch plate (30, figure 3). Especially for use with windows and doors.
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