Electrical equipment

Abstract

Electrical device, comprising a first and a second electrical conductor (1, 2), one end of each conductor (1, 2) being galvanically connected to an electrical contact element (5, 6) via a connection point (3, 4), the two contact elements (5, 6) being arranged electrically separated from one another in a housing (7), characterized in that a casting compound (8) is provided in the housing (7) which encloses the connection points (3, 4) and the contact elements (5, 6) and has an electrically insulating effect.

Description

[0001] The invention relates to an electrical device according to the preamble of claim 1.

[0002] An electrical device of the type mentioned above, which is used particularly in ultrasound applications, is generally known, so that no special written documentation is required in this regard. Such an electrical device consists of a first and a second electrical conductor, one end of each conductor being galvanically (i.e., electrically conductively) connected to an electrical contact element via a connection point. The two contact elements are arranged in a housing, electrically separated from one another.

[0003] The invention is based on the object of improving an electrical device of the type mentioned above. In particular, an electrical device is to be created that functions reliably even underwater, especially at greater water depths. Looking more closely, an electrical device is to be created, particularly for ultrasound applications, which is designed to be watertight, particularly in the longitudinal direction of its electrical conductors exposed in the water.

[0004] This object is achieved with an electrical device of the type mentioned at the outset by the features listed in the characterising part of claim 1.

[0005] According to the invention, a casting compound is provided in the housing which surrounds the connection points and the contact elements and has an electrically insulating effect.

[0006] In other words, the solution according to the invention is characterized by the fact that, in particular, the aforementioned longitudinal watertightness is achieved by encapsulating the contact elements and the connection points in the housing. This allows the electrical device to be used reliably even in great water depths and with corresponding water pressures.

[0007] Other advantageous developments of the electrical device according to the invention result from the dependent claims.

[0008] The electrical device according to the invention, including its advantageous developments according to the dependent claims, is explained in more detail below with reference to the drawing of a preferred embodiment.

[0009] It shows schematically Fig. 1 shows a section through the electrical device according to the invention.

[0010] The electrical device shown in the single figure consists of a first and a second electrical conductor 1, 2, wherein one end of each conductor 1, 2 is galvanically connected via a connection point 3, 4 to an electrical contact element 5, 6 belonging to the device, wherein the two contact elements 5, 6 are arranged electrically separated from one another in a housing 7.

[0011] It is further preferably provided that the electrical conductor 1, 2 is provided with an insulation (for example made of plastic) outside the housing 7.

[0012] Furthermore, it is preferably provided that the electrical conductor 1, 2 consists of a plurality of individual wires, i.e. has a strand-like structure.

[0013] Furthermore, it is preferably provided that the contact element 5, 6 can optionally be used as a contact pin (see Fig. 1) or contact socket (not shown separately).

[0014] Furthermore, as shown, it is provided that each contact element 5, 6 has a section 5.1, 6.1 accessible from outside the housing 7. Via this section 5.1, 6.1, an electrical contact closure is made with a correspondingly (in particular form-) matching mating contact element on an electrical counter-device (left in Fig. 1), which is not relevant here. It goes without saying, however, that the electrical device and the electrical counter-device, particularly in the area of ​​sections 5.1 and 6.1, are designed to be watertightly connected to one another, for example by providing a suitable seal.

[0015] Furthermore, it is preferably provided that the connection point 3, 4 is optionally designed for a material, force, and / or form-fitting connection of the conductor 1, 2 and the electrical contact element 5, 6. Particularly preferably, the connection point 3, 4 is designed as a solder joint, thus in particular as a material connection.

[0016] What is essential for the solution according to the invention is that a potting compound 8 is provided in the housing 7 which surrounds the connection points 3, 4 and the contact elements 5, 6 and has an electrically insulating effect.

[0017] To manufacture this electrical device, it is particularly preferred in the method that a galvanically effective connection point 3, 4 is first created between the electrical conductor 1, 2 and the contact element 5, 6, and only then is the potting compound 8 introduced into the housing 7. A material that hardens over time after potting is preferably selected as the potting compound 8.

[0018] Regarding the said housing 8, (which is in Fig. 1 is not shown in detail) it is preferably provided that it has a pot-shaped base body with a pot bottom, pot side walls and pot opening. Furthermore, it is preferably provided that the contact element 5, 6 extends to the pot bottom (left in Fig. 1) and the connection point 3, 4 of the pot opening (right in Fig. 1) is arranged facing each other.

[0019] To further improve the longitudinal watertightness mentioned above, it is also particularly preferred that the electrical contact element 5, 6 has a rough surface at least in sections to enlarge the surface area or to form a labyrinth seal (see also https: / / de.wikipedia.org / w / index.php?title=La-byrinthdichtung&oldid=239632358) between the contact element 5, 6 and the potting compound 7. This requirement further complicates the undesired establishment of contact between the electrical poles and thus a short circuit for potentially penetrating water. Looking at this in more detail, it is particularly preferred that surface-enlarging measures such as optionally inserting grooves, sandblasting, coating, and / or pickling are provided or taken.

[0020] With regard to the intended use of the electrical device according to the invention, it is furthermore preferably provided that the electrical conductors 1, 2 are each more than 20 m, preferably more than 30 m, particularly preferably more than 40 m, long. Furthermore, it is preferably provided that the electrical conductors 1, 2 are connected to one another at their ends facing away from the housing 7. Finally, looking at this in somewhat more detail, it is particularly preferably provided that the electrical conductor 1, 2 is at least partially wound into a coil, in particular a measuring coil in ultrasound applications. List of reference symbols 1 electrical conductor 2 electrical conductors 3 Connection point 4 Connection point 5 Contact element Section 5.1 6 Contact element Section 6.1 7 housings 8 Potting compound QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited non-patent literature

[0000] https: / / de.wikipedia.org / w / index.php?title=La-byrinthdichtung&oldid=239632358

[0019]

Claims

[1] Electrical device, comprising a first and a second electrical conductor (1, 2), wherein one end of each conductor (1, 2) is galvanically connected to an electrical contact element (5, 6) via a connection point (3, 4), wherein the two contact elements (5, 6) are arranged electrically separated from one another in a housing (7), characterized by that a casting compound (8) is provided in the housing (7) which surrounds the connecting points (3, 4) and the contact elements (5, 6) and has an electrically insulating effect. [2] Electrical device according to claim 1, characterized by that the electrical contact element (5, 6) has a rough, preferably sandblasted, surface at least in sections. [3] Electrical device according to claim 1 or 2, characterized bythat the connection point (3, 4) is designed optionally for the material, force and / or form-fitting connection of the conductor (1, 2) to the electrical contact element (5, 6). [4] Electrical device according to one of claims 1 to 3, characterized by that the electrical conductor (1, 2) consists of a plurality of individual wires. [5] Electrical device according to one of claims 1 to 4, characterized by that each contact element (5, 6) has a section (5.1, 6.1) accessible from outside the housing (7). [6] Electrical device according to one of claims 1 to 5, characterized by that the electrical conductors (1, 2) are each more than 20 m, preferably more than 30 m, particularly preferably more than 40 m, long. [7] Electrical device according to one of claims 1 to 6, characterized by that the electrical conductor (1, 2) is at least partially wound into a coil. [8] Electrical device according to one of claims 1 to 7, characterized by that the housing (7) has a pot-shaped base body with a pot base, pot side walls and pot opening. [9] Electrical device according to claim 8, characterized by that the contact element (5, 6) extends to the bottom of the pot and the connection point (3, 4) is arranged facing the pot opening.

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