Device for attaching the components of alarm systems

0001The invention relates to a device for the attachment of components of Alarm systems according to the preamble of claim 1 as z. B. from US-A-4631526 is known.

0002Alarm systems include components for monitoring of individual areas, For example, sensors on access doors, windows, etc., of the Emergency Operations Centre are deducted. These sensors are usually mounted in their enclosures arranged and fixed to appropriate places, most walls. The Fastening occurs at known components so that the Fasteners, such as screws, mounted in full Component are not accessible. For this purpose, it is necessary that to open housing for mounting and the mounted, closed Housing to be secured against opening.

0003The invention is based on the object arranged in a housing Components of alarm systems in such a way that the attachment can be carried out quickly and without opening the housing, wherein the components are protected against sabotage.

0004This object is, based on the features of the preamble of the Claim 1 is solved by the characterizing features of claim 1. Advantageous embodiments of the invention are dependent in.den Claims.

0005According to the invention, the housing rear wall has a recess, by the fastening means, for example a screw can be guided. Within the housing is an arrangement for monitoring the position of the fastening means arranged, in particular, a position change of the Fastening means detects within the housing and an alarm signal supplies, which is preferably transmitted to the alarm center.

0006Through the inventive device is a simple application of Components of an alarm system possible by the housing by means of the Recess can be hung into the fastening means. As Fastening means can be used screws or hooks which are anchored, for example in a wall. The fastening means is not available because, for example, the screw head or the hook in the Interior of the housing project. There is an arrangement for monitoring the arranged position of the fastener. When changing the position or the acceptance of the case from the fastening means is an alarm signal output, so that an unauthorized removal of the component can not is.

0007According to an advantageous embodiment of the invention is the arrangement for monitoring the position of the fastening means of a switch, the is operated by the recess at the implementation of the fastener. Thereby, the position in a simple and inexpensive manner, in particular the presence of the fastener in the casing monitored. As soon as the fastener is removed from the housing, ie when removing the cover from the mounting location, the switch again opened or it changes state, causing the alarm. False alarms can be avoided, so that the switch is arranged or designed so that a slight movement of a not too Switch operating results.

0008A further advantageous embodiment of the invention provides that the Arrangement for monitoring the position of the fastener indirectly or is arranged directly on the inside of the housing front wall. at Opening the case changes the relative position of Position monitoring arrangement for a fastener and it is recognized open the housing and leads to the alarm signal.

0009Furthermore, it has proved advantageous to embody the casing so, that it can be opened only in the non-attached state. This can for example, be achieved by the screws which the housing parts hold together, are only accessible from the rear panel.

0010The invention, according to an exemplary embodiment Figures 1 and 2 explained. Show it:<dl tsize="9" compact="compact"><dt>Figure 1:</dt><dd>a cross-section of the device according to the invention and</dd><dt>Figure 2:</dt><dd>the recess in the front view.</dd></dl>

0011The case, in which a component of an alarm system, for example, a Sensor for monitoring room, which is not shown in the figure is arranged, is composed of a housing rear wall 2 and a front housing wall 3, which are connected by means of a screw 4th The back wall 2 has a recess 21, 22 through which a Fixing means 8, in the present case a screw is passed, can be. As seen in Figure 2, the recess 21, 22 has a lower part 22, whose diameter is larger than the head of the fed through Screw 8, and an upper part 21 whose diameter is smaller than the screw head and larger than the diameter of the shank of Screw 8. The screw 8 is, for example screwed into a wall 1, whereby the Screw head is spaced from the wall. 1 The housing 2, 3 is to the screw secured by the lower part 22 of the recess on the Head of the screw 8 is guided and subsequently lowered the housing is such that the shank of the screw 8 in the region of the upper part 21 of the Recess is. Inside the housing is a switch according to the embodiment 6 arranged with a reed 61st The switch within the housing arranged so that when hanging the housing of the head of the screw Switch tongue 61 is operated. At purchase of the housing by a Unauthorized output an alarm signal. This preferably a corresponding signal to the alarm center given. In case of acceptance of the case by the user, a Alarm can be suppressed by the alarm system completely or only the Component is disarmed concerning.

0012The switch 6, 61 may be attached directly to the housing front wall be attached or, if the dimensions of the housing this is not allow means of an insert 7 and a fixing means 5 with the be connected housing front wall.

0013Through the inventive device components can a Alarm mounted quickly and therefore cost and example be removed for service purposes, the protection against unauthorized Removal of the component relative to known solutions still increases has been.