DE10228948A1 - Electrical device has encapsulated housing for electrical circuitry, and arrangement(s) for electrically connecting circuits in housing to electrical arrangements for connection outside housing - Google Patents

Abstract

The device has an encapsulated housing for electrical circuitry and arrangements for electrically connecting the circuits mounted in the housing to electrical arrangements for connection outside the housing. The arrangement for electrical connection has a first and second molded part, at least one contact element and an outer molded part. The first inner part (3) has at least one first groove covered by the second inner part (4) to form at least part of a first channel (7) opening into the housing at one end (8) and opening outside at the other end (9). A second channel (10) is formed for a contact element whose ends inside and outside the housing are accessible.

Description

The invention relates to an electrical Device which an encapsulated housing for accommodating electrical circuits and with at least one means for electrically connecting the housed in the housing Circuit outside of the housing connectable electrical means. In such an electrical device is a Channel provided between the inner and outer of the housing, which is arranged in the area of the means for electrical connection is.

This channel between the inner and the exterior of the encapsulated housing is used for the operation of the electrical device or the one in the housing provided electrical circuit warming and therefore expanding air to be able to discharge through the duct for pressure equalization. Which is within the housing heated Air would otherwise the walls of the housing encumber what may to damage on the housing to lead can. It is also possible that electrical components are damaged by the pressure load. It is known that the channel in the area of electrical means Connection opens. Cables can be connected to the means for electrical connection, the plug on the one hand the mouth cover the channel so that moisture can enter the casing is prevented, which on the other hand the necessary pressure equalization allows.

In the previously known electrical devices are these channels provided as straight holes. So far, there has been one possibility for more complicated shaped channels not known.

The invention was therefore the object underlying an electrical device of the type mentioned at the beginning in such a way that it is possible channels for the To allow pressure equalization with basically any guidance.

This object is achieved according to the invention solved, that the means for electrical connection include the following features: The means have a first and a second inner molded part, at least a contact element and an outer molded part on. The first inner molded part has at least one first Open up while the second inner molded part covers the first groove of the first inner molded part. The first groove thus covered forms at least part of a first Channel. One end of the first channel opens inside the housing, while the other end outside of the housing empties. One of the inner molded parts has at least one second groove. The contact element is inserted into the second groove and the other inner molding covers the second groove. The second so covered Groove forms a second channel for the contact element from which the ends of the contact element protrude. The outer molding surrounds the first and the second inner molded part, the mouth of the first channel are unlocked and the ends of the contact element inside or outside of the building accessible are.

To make the first channel, as a groove in the surface The first inner molded part can basically have any shape for the first channel selected become. The first channel is covered by covering the first groove the second inner molded part is produced.

According to the invention, the second inner molding also have a first groove, which together with the first groove of the first inner molded part, the first channel formed.

Furthermore, according to the invention, the other can inner molding also have a second groove, which together with the second groove of an inner molded part, the second channel formed.

Furthermore, the electrical device or can Means for electrically connecting the electrical device further first channels for pressure relief and / or second channels with additional contact elements exhibit. According to the invention, the first and / or the second channel can be one or be angled several times.

The outer molded part is advantageous integral part of the housing. Finally can the means for electrical connection have a socket, which corresponds with a plug of a connecting line, the Mouth area of the first and second channel is formed in the socket.

An embodiment for an electrical according to the invention Device will based on the drawing described. In it shows

1 a first inner molding and a second inner molding in assembly;

2 a section through the assembly along the line II-II in 1 and

3 a lower housing part of an electrical device.

The first inner molding 3 is essentially L-shaped. Four second grooves are provided on the outside of the two legs. Furthermore, in a reinforced central area of the inner molded part 3 a first groove is formed. This reinforced central area projects beyond the lateral areas of the inner molded part 3 out and is angled by 90 ° compared to the longer leg. In the lower area of the shorter leg of the inner molded part 3 the first groove ends and a bore is parallel to the shorter leg of the inner molded part through the reinforced central region 3 drilled, which opens into the first groove on the outside of the longer leg.

The outer inner molded part is also essentially L-shaped. The edges of the two legs are angled inwards by 90 °. The area between the edges of the inner molding 4 is dimensioned so that the first inner molded part 3 form-fitting in the second inner molded part 4 can be used. At the upper end of the longer leg of the second inner molded part 4 an extension is provided which extends the central region of the first inner molded part, which is angled by 90 ° 3 engages below. This approach is essentially formed by an angling relative to the longer leg, the free end of the approach being angled upward again by 90 °. This area of the attachment which is angled upwards by 90 ° has a first groove. Is the first inner molding 3 into the second inner molding 4 used, the first groove of the first inner molded part 3 covered, creating the first channel 7 is trained for pressure equalization. The end 8th of the channel 7 opens on the one hand on the top of the extension or the reinforced central region and on the other hand in the bore of the reinforced central region of the first inner molded part 3 , The second grooves are also covered, creating four second channels 10 be formed. In these second channels 10 are contact elements 6 (in 1 and 2 not shown) used, via which an electrical connection between the inner and outer of the housing can be made.

In the representation of the 3 are the first and second inner molded part 3 . 4 only in the area of the mouths 8th . 9 of the first channel 7 recognizable. The first and the second inner molded part 3 . 4 are namely completely from the outer molded part 5 enclosed, which by a corner of a lower housing part 1 is formed. The outer molding 5 is therefore an integral part of the lower housing part 1 in which various electrical circuits are arranged. The corner of the lower part of the housing is a socket 2 trained for a connector. In the socket 2 Various webs are provided with which a plug of a connecting line can be held. Furthermore, the ends of the contact elements 6 in the area of the bottom of the socket 2 arranged.

Between these contact elements 6 the first channel opens 7 which through the first grooves in the first and the second inner molding 3 . 4 is trained. The other end 9 of the first channel 7 opens into the inside of the lower part of the housing 1 , There also end in the area of the socket 2 beginning contact elements 6 , From there, electrical connections, mostly solder connections, can be routed to the further electrical circuit. The lower part of the housing 1 is closed for operation with a housing cover pressure-tight and sealed against moisture. In order to still have the opportunity for pressure equalization, the first channel is 7 in the socket 2 provided the lower part of the housing.

1

Housing bottom

2

Rifle

3

first inner molding

4

second inner molding

5

outer molding

6

contact element

7

first channel

8th

channel end

9

channel end

10

second channel

Claims (7)

Electrical device which has an encapsulated housing for accommodating electrical circuits and with at least one means for electrically connecting the circuit accommodated in the housing to electrical means which can be connected outside the housing, the means for electrical connection comprising the following features: 1. The means have a first and second inner molded part ( 3 . 4 ), at least one contact element ( 6 ) and an outer molded part ( 5 ) on; 2. the first inner molded part ( 3 ) has at least one first groove, 2.1 the second inner molded part ( 4 ) covers the first groove of the first molded part, 2.2 the first groove thus covered forms at least part of a first channel ( 7 ), 3.1 one end ( 8th ) of the first channel ( 7 ) opens inside the housing, 3.2 the other end ( 9 ) opens outside the housing; 4. one of the inner molded parts ( 3 ) has at least one second groove, 4.1 in the second groove is the contact element ( 6 ) inserted, 4.2 the other inner molded part ( 4 ) covers the second groove; 4.3 the second groove covered in this way forms a second channel ( 10 ) for the contact element ( 6 ) from which the ends of the contact element ( 6 ) protrude, 5. the outer molded part ( 5 ) encloses the first and second inner molded part ( 3 . 4 ), where 5.1 the mouths ( 8th . 9 ) of the first channel ( 7 ) are unlocked and 5.2 the ends of the contact element ( 6 ) are accessible inside or outside the housing. Electrical device according to the preceding claim, characterized in that the second inner molded part ( 4 ) has a first groove, which together with the first groove of the first inner molded part ( 4 ) the first channel ( 7 ) trains. Electrical device according to one of the preceding claims, characterized in that the other inner molded part ( 4 ) has a second groove, which together with the second groove of an inner molded part ( 3 ) the second channel ( 10 ) trains. Electrical device according to one of the preceding claims, characterized in that the means further first channels and / or second channels ( 10 ) with further contact elements ( 6 ) having. Electrical device according to one of the preceding claims, characterized in that the first and / or second channel ( 7 . 10 ) is angled one or more times. Electrical device according to one of the preceding claims, characterized in that the outer molded part ( 5 ) is an integral part of the housing. Electrical device according to one of the preceding claims, characterized in that the means for electrical connection comprise a socket ( 2 ), the mouth region of the first and second channel ( 7 . 10 ) is formed in the socket.