| 摘要 |
The invention provides a security device in particular for preventing unauthorised removal of a shopping trolley or the like from premises. The security device (120) has a wheel (3) mounted on a support body (2) by an arm (5) which pivots on the body (2). A latch arm (10) retains the arm (5) in a released position as shown in the drawing. The latch arm (10) is engageable with trip buttons (100) of the stop means at each exit of the premises to release the arm (5) to move the arm (5) rearwardly to engage a brake to lock the wheel (3). The arm (5) is locked in the rearward brake engaging position by a pawl (125) which engages a wheel mounting axle (4) on the arm (5). |
