A security alarm 1 for a vehicle comprises: a housing 2 having a casing 5a having interior and exterior surfaces, and at least one aperture 23 extending between the surfaces, a flexible base 4 comprising an attachment means to attach the housing to a surface of a vehicle; the casing and the base defining an interior space; and one or more biasing means adapted to apply a force to urge the base into a curved configuration; and at least one motion sensing component 3 comprising an audio element 17, the motion sensing component being located within the interior space of the housing so that each audio element is located adjacent a casing aperture, the motion sensing component being configured to detect movement of the housing and to generate an alarm signal from the audio element in response to said movement. The biasing means may comprise interlocking members 6, 21 located on the base and casing, and/or a plurality of threaded holes 8 and screws. The alarm is intended to be located on the exterior of a vehicle, possibly for protecting a roof rack or pipe tube carrier on a car or van.
Security alarm
2021-08-25
Patent
Electronic Resource
English