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Casing assembly for burglar alarms

  • US 20060033635A1
  • Filed: 08/11/2004
  • Published: 02/16/2006
  • Est. Priority Date: 08/11/2004
  • Status: Abandoned Application
First Claim
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1. An improved casing assembly for burglar alarms, comprising:

  • an upper casing, having at least one latch pillar individually disposed on both sides of said upper casing, a latch set for retaining a circuit board and a hollow cavity, and said hollow cavity having a surrounding plate disposed around said hollow cavity for mounting a speaker, and said surrounding plate having two interconnected hollow pillars with unequal diameters disposed on both sides of said surrounding plate;

    a chassis, having a surrounding plate for enclosing an area corresponding to said upper casing, a slot formed between said surrounding plate and said chassis, a latch hole corresponding to said latch pillar, a through hole individually disposed at said hollow pillar having a larger diameter and a key hole disposed on said surrounding plate; and

    a front panel, being covered onto the exterior of said upper casing and installed onto said chassis, and having a latch plate disposed on an internal edge of said front panel corresponding to said latch hole of said chassis, and a key hole disposed on another side corresponding to said key hole of said chassis, and an embedded plate extended from a bottom edge around the periphery of said front panel corresponding to said slot;

    thereby the foregoing element constituting a casing for a burglar alarm without using screws for the fixture and being tightly assembled to prevent said casing assembly from being opened by an external force.

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