Feed-through and sealing arrangement
A feed-through and sealing arrangement of an electrical connection fed through a housing wall of an electric motor or another electric device, the feed-through and sealing arrangement including a terminal pin plate through which a terminal pin is fed, at least one feed-through opening, a sealing surface, and a combined sealing part. The at least one terminal pin cover is inserted into the at least one feed-through opening when feeding-through the terminal pin through the housing wall.
1. A feed-through and sealing arrangement of an electrical connection fed through a housing wall of an electric motor or another electric device, the feed-through and sealing arrangement comprising:
a terminal pin plate in the form of a metal plate with at least one feed-through opening through which a terminal pin made of electrically conductive material is fed through and electrically insulated from the metal plate by a glass insulation extending through the at least one feed-through opening and enclosing the terminal pin in a region of the at least one feed-through opening;
a plate support surface for the metal plate on the housing wall;
a sealing surface on the housing wall surrounded by the plate support surface for the metal plate, the at least one feed-through opening surrounded by the sealing surface for feed-through of the terminal pin through the housing wall; and
a combined sealing part, in which a flat plate sealing region placed on the housing between the metal plate and the sealing surface and at least one terminal pin cover, which is a cylindrical plastic or an elastomer sleeve having a frontal opening surrounded by the flat plate sealing region, are connected to each other, wherein the at least one terminal pin cover is inserted into the at least one feed-through opening of the housing wall when feeding-through the terminal pin through the housing wall.
2. The feed-through and sealing arrangement according to claim 1 , wherein the feed-through and sealing arrangement has three terminal pins and has, for the terminal pins, three feed-through openings in the metal wall, three feed-through openings in the housing wall, and a combined sealing part with three terminal pin covers.
3. The feed-through and sealing arrangement according to claim 2 , wherein an outer edge of the flat plate sealing region has an oval shape.
4. The feed-through and sealing arrangement according to claim 3 , wherein the plate support surface for the metal plate in the region surrounding the feed-through openings and forming the plate support surface for the flat plate sealing region of the combined sealing part has an oval recess corresponding to the oval shape of the flat plate sealing region.
5. The feed-through and sealing arrangement according to claim 2 , wherein the combined sealing part has an oval sealing ring at an outer edge of the flat plate sealing region, which encloses the flat plate sealing region as a circumferential sealing cord.
6. The feed-through and sealing arrangement according to claim 2 , wherein the combined sealing part is formed as a single-material component from an elastomer.
7. The feed-through and sealing arrangement according to claim 2 , wherein the combined sealing part is a dual-material component, which consists of a soft component comprising the plate sealing region and a hard component in at least a part of the terminal pin covers.
8. The feed-through and sealing arrangement according to claim 7 , wherein the hard component and the soft component are joined together by an adhesive bond or by vulcanization.
9. The feed-through and sealing arrangement according to claim 7 , wherein the soft component consists of ethylene propylene diene monomer rubber (EPDM).
10. The feed-through and sealing arrangement according to claim 7 , wherein the hard component consists of a polyamide with a glass fiber reinforcement.