DE102007002006B4 - Electrical device, in particular display instrument for a motor vehicle, and method for producing an electrical device sealed in a housing - Google Patents

Abstract

Electrical device (10), in particular display instrument for a motor vehicle, with a housing (20) and with a closing housing element (21), wherein the housing element (21) has a closure element (30) such that the housing (20) by means of the closure element (30) is closable, characterized in that an opening of the housing (20) with an irreversible change of the closure element (30) is connected, wherein the housing (20) has a further housing element (22), wherein the housing element (21) and / or the further housing element (22) next to the closure element (30) at least a first further closure element (31), wherein after opening the housing (20) by an irreversible change of the closure element (30), the housing (20) by means of the first further closure element (31) is closable, wherein an opening of the housing (20) with an irreversible change of the first further closure element s (31) is connected, wherein the housing element (21) and / or the further housing element (22) next to the closure element (30) and the at least one first further closure element (31) at least one second further ...

Description

The The present invention relates to an electrical appliance, in particular Indicator for a motor vehicle, with a housing and with a closing Housing element, wherein the housing element a closure element such that the housing by means of the closure element is closable, characterized in that an opening of the housing with an irreversible change the closure element is connected.

In general, electrical devices are known in which an unauthorized opening of the housing to be detected. From the German utility model DE 296 05 499 U1 is a device for monitoring for unauthorized opening of screwed covers, lids, front panels u. Like. Known. Here, a permanent magnet and an electromagnetic device with an associated evaluation or monitoring switching device is provided. This special device is relatively expensive and therefore associated with relatively high costs. Furthermore, in the document DE 196 42 045 C2 discloses a sealing device for sealing an at least two-part housing with a latching element for a counter-locking element in the other housing part. Further, in the document DE 363 96 70 A1 discloses a device for sealing and simultaneous mechanical locking of a lid on the frame of a device by means of a Plombierstiftes. Furthermore, in the document DE 195 42 016 A1 discloses a device for detecting a manipulation of a closed fuse box with a bottom, a circumferential side wall and a lid-like attachment part. Further, in the document AT 231 747 discloses a device for measuring the amount of heat consumed in central heating systems in individual radiators. In the publication DE 280 74 39 C2 A patch of weldable plastic coated fabric for repairing tarpaulins is disclosed. Furthermore, in the document DE 199 57 280 A1 a counter, in particular a gas meter, disclosed with additional module.

Of the The present invention is therefore based on the object, an electrical Device too create, being an open a housing can be detected safely and with relatively little effort.

These Task is by an electrical device, in particular a display instrument for a motor vehicle according to claim 1 solved. For example, this relates to indicating instruments for motor vehicles, ECUs for motor vehicles, other controls or data comprehensive or processing electrical Equipment.

It is according to the invention preferred that the housing element glued and / or partially melted in the region of the closure element and / or welded is provided. This can be easier and less expensive Way a closure of the housing or of the housing element through an irreversible change the closure element can be effected.

Further It is inventively provided that the housing element for the formation of the housing to the irreversible occlusive Attachment is provided on a structural element, in particular for Attachment of a structural element of a motor vehicle. hereby is it possible according to the invention that the electrical device For example, substantially fixed to a structural part, for example in a motor vehicle, can be installed and through the housing element is only covered. The housing is therefore through the housing element and the structural element is formed. To close the case will in turn, the closure element on the housing element permanently, d. H. changed irreversibly, so that opening the housing or a removal of the housing element clearly documented by the breaking of the closure element is.

Further it is preferably provided according to the invention that the case another housing element and together with the housing element, the housing of the electrical device forms. Of course it can be provided according to the invention be that the case additionally to the housing element and the further housing element even more housing elements having.

According to the present invention, it is further provided that the housing element and / or the further housing element next to the closure element comprises at least a first further closure element, wherein after opening of the housing by an irreversible change of the closure element, the housing is closable by means of the first further closure element, wherein an opening of the housing is connected to an irreversible change of the first further closure element. This makes it possible according to the invention in a particularly simple and advantageous manner, for the case for example a repair of the electrical device, in which an opening of the housing and thus a breaking of the closure element is necessary to allow a re-closing of the housing, wherein also in the case of second closing operation of the housing, a closure of the housing is possible such that an opening of the housing or an opening of the housing in a clear way documented bar is.

Further It is inventively provided that the housing element and / or the further housing element at least in addition to the closure element and the at least one further closure element a second further closure element, wherein after opening the Housing through an irreversible change the first further closure element of the housing by means of the second further Locking element closable is, being an opening of the housing with an irreversible change the second further closure element is connected. hereby can have a second opening or a third party protected Closure of the housing be made clearly documented.

Further it is inventively provided advantageous that the closure element and / or the first further closure element and / or the second further closure element as a fusion seal and / or provided as a glued seal. This makes it according to the invention that the electrical device particularly easy and inexpensive can be produced and thus providing a documentable, irreversible closure of the electrical device with comparatively low Cost possible is.

One Another object of the present invention relates to a method for producing a sealed in a housing electrical according to the invention device, wherein the closure of the closure element and / or the closure the first further closure element and / or the closure the second further closure element by means of hot caulking and / or by gluing and / or by ultrasonic welding and / or by friction welding carried out becomes. This makes it possible according to the invention with simple means, a documentable irreversible closure of the housing too achieve.

embodiments The invention are illustrated in the drawing and in the following description explained in more detail.

1 shows a perspective view of an exemplary electrical device with a closure element in an enlarged view.

2 and 3 show two different embodiments of an electrical device according to the invention.

4 shows an enlarged schematic sectional view of a closure element.

In 1 is a schematic perspective view of an electrical device according to the invention 10 with a housing 20 shown. The housing 20 includes in the embodiment according to the 1 a housing element 21 and another housing element 22 , The housing element 21 is by means of two closure elements 30 which are provided substantially identical, with the further housing element 22 connected such that an opening of the housing 20 with an irreversible change of the closure element 30 or the closure elements 30 connected is. In particular, it is the closure elements 30 provided that, for example, a part of the housing element 21 with the further housing element 22 is welded and in an opening attempt of the housing 20 leaves or the like. Alternatively to a welding of the housing element 21 with the further housing element 22 in the region of the closure element 30 or in the region of the plurality of closure elements 30 it can also be provided that the closure element 30 has a splice or a melting point or the like.

In 2 another schematic embodiment of the present invention is shown. The electrical device 10 this includes the housing 20 in the form of the housing element 21 and a structural element 23 where the electrical part 10 ' of the electrical device 10 fixed to the structural element 23 is connected and to the formation of the housing 20 only the housing element 21 with the structural element 23 connected is. For the sake of simplicity, the closure element 30 or the plurality of closure elements 30 in the embodiment according to the 2 not shown.

In 3 is a schematic representation of another embodiment of the electrical device 10 with the housing element 21 and the further housing element 22 shown, wherein in addition to the closure element 30 or two closure elements 30 furthermore a first further closure element 31 and a second further closure element 32 or two first further closure elements 31 and two second further closure elements 32 are provided. This is an embodiment of the electrical device 10 such that the closure of the housing 20 of the electrical device 10 at the first closing, ie during the initial production or production of the electrical device 10 , For example, only the closure elements 30 be irreversibly closed, that an opening of the housing 20 with an irreversible change in the closure elements 30 is connected while the first further closure element 31 and the second further closure element 32 remains open, that is not sealed. A secure closure of the housing can be via other fasteners or Can be ensured fasteners that can be reversibly opened and closed (but not shown in the drawings). If for such an electrical device 10 For example, a warranty or repair case occurs, it may be provided by the manufacturer or authorized repairers of the electrical device that the closure element 30 to provide access to the interior of the housing 20 is opened (and in this case an irreversible change of the closure element 30 is caused), wherein after the repair process, the housing 20 over the first further closure element 31 or via the plurality of first further closure elements 31 is closed. This can - just as after the first initial closing of the housing 20 A closure of the housing is achieved in such a way that an opening of the housing is detectable or that in a clear way a break of the "mechanical seal" of the first further closure element 31 is detectable. In the event of a further repair measure with correspondingly connected opening of the housing 20 and a subsequent third closure (after the first initial closure in the manufacture of the electrical device, the second closure after the first repair or repair or the like of the electrical device) can thus also a "protected" closure (ie with documentable opening process) can be achieved.

In 4 is a schematic sectional view of a detailed view of a closure element according to the invention 30 represented, wherein with solid line the condition of the housing element 21 and the further housing element 22 before the closure of the closure element 30 is indicated and where in dashed line the structure 35 of the closure element 30 after the closing operation, ie in particular after a melting and / or welding and / or gluing process of the closure element 30 is shown. In an analogous manner according to the invention also the first further closure element 31 and / or the second further closure element 32 locked.

LIST OF REFERENCE NUMBERS

10

electrical device

10 '

electrical Assembly of the electrical device

20

casing

21

housing element

22

additional housing element

30

closure element

31

first further closure element

32

second further closure element

35

melted Version of the closure element

Claims (5)

Electric device ( 10 ), in particular display instrument for a motor vehicle, having a housing ( 20 ) and with a closing housing element ( 21 ), wherein the housing element ( 21 ) a closure element ( 30 ) such that the housing ( 20 ) by means of the closure element ( 30 ) is closable, characterized in that an opening of the housing ( 20 ) with an irreversible change of the closure element ( 30 ), the housing ( 20 ) another housing element ( 22 ), wherein the housing element ( 21 ) and / or the further housing element ( 22 ) next to the closure element ( 30 ) at least one first further closure element ( 31 ), wherein after opening the housing ( 20 ) by an irreversible change of the closure element ( 30 ) the housing ( 20 ) by means of the first further closure element ( 31 ) is closable, wherein an opening of the housing ( 20 ) with an irreversible change of the first further closure element ( 31 ), wherein the housing element ( 21 ) and / or the further housing element ( 22 ) next to the closure element ( 30 ) and the at least one first further closure element ( 31 ) at least one second further closure element ( 32 ), wherein after opening the housing ( 20 ) by an irreversible change of the first further closure element ( 31 ) the housing ( 20 ) by means of the second further closure element ( 32 ) is closable, wherein an opening of the housing ( 20 ) with an irreversible change of the second further closure element ( 32 ) connected is. Electric device ( 10 ) according to claim 1, characterized in that the housing element ( 21 ) in the region of the closure element ( 30 Glued and / or partially melted and / or welded is provided. Electric device ( 10 ) according to one of the preceding claims, characterized in that the housing element ( 21 ) to form the housing ( 20 ) for irreversible occlusive attachment to a structural element ( 23 ) is provided, in particular for attachment to a structural element ( 23 ) of a motor vehicle. Electric device ( 10 ) according to one of the preceding claims, characterized in that the closure element ( 30 ) and / or the first further closure element ( 31 ) and or the second further closure element ( 32 ) is provided as a fusion seal and / or adhesive seal. Method for producing a housing in a housing ( 20 ) of a sealed electrical appliance ( 10 ) according to one of the preceding claims, characterized in that the closure of the closure element ( 30 ) and / or the closure of the first further closure element ( 31 ) and / or the closure of the second further closure element ( 32 ) is performed by means of hot caulking and / or by gluing and / or by means of ultrasonic welding and / or by means of friction welding.

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