Plug and socket for connecting to a thermal conductor protected against polarity reversal
View Patent ↗The present invention relates to a plug and a socket, which are each designed to be capable of being connected to a coded thermal line protected against polarity reversal. To this end the plug and the socket each comprise a recess which is configured to receive, in a manner protection against polarity reversal, a thermal line with an asymmetrically designed cross section and a first and a second electrically conductive plug or socket element which each comprise a first and a second area. The first area of the plug and socket elements each comprise a spring contact, and the plug and socket elements are arranged in such a manner that the two spring contacts each contact substantially axially a core of a received thermal line.
1. A plug for an electrical plug-in connection, wherein the plug comprises:
a receiver having an asymmetrical cross section and configured to receive a thermoelectric conductor with an asymmetrical cross section in a manner protected against polarity reversal, the receiver formed as part of a housing, and
first and second electrically conductive plug elements, each of which has a first and second region,
wherein the first regions of the plug elements each have a spring contact, and the plug elements are arranged such that the two spring contacts each make substantially axial contact with a wire in a thermoelectric conductor that has been received therein, and
wherein the second regions of the plug elements are configured such that they can be received in a socket element to establish electrical contact.
2. The plug according to claim 1 , in which the receiver has a strain relief for relieving the strain and mechanically connecting a thermoelectric conductor that has been received therein.
3. The plug according to claim 2 , in which the spring contact comprises a spring element and a test probe that interact such that when a thermoelectric conductor is received in the strain relief, the test probe makes substantially axial contact with a wire in the thermoelectric conductor, wherein the spring force of the spring element exerts a pressure on the thermoelectric conductor to enable a secure electrical connection of the spring contact with the thermoelectric conductor that has been received therein.
4. The plug according to claim 1 , in which the housing has at least a first and second housing part, which can be joined by means of a snap-fit assembly in order to hold the housing parts together, and encompass an interior of the housing.
5. The plug according to claim 4 , in which the plug elements are held in a predetermined position via guide bolts in one of the housing parts, such that a displacement in the longitudinal and transverse directions is prevented.
6. The plug according to claim 5 , in which the plug elements have at least one hole, by means of which the plug elements engage with at least one guide bolt.
7. The plug according to claim 1 , in which the first plug element is made of nickel, and the second plug element is made of chrome-nickel.
8. The plug according to claim 1 , in which the plug is configured to make electrical contact with a socket to electrically connect two thermoelectric conductors to one another.
9. A socket for an electrical plug-in connection, wherein the socket comprises:
a receiver that is configured to receive a thermoelectric conductor with an asymmetrical cross section in a manner protected against polarity reversal, the receiver having an asymmetrical cross section and formed as part of a housing, and
first and second electrically conductive socket elements, each of which has a first and second region,
wherein the first regions of the socket elements each have a spring contact, and the socket elements are arranged such that the two spring contacts each come in substantially axial contact with a wire in a thermoelectric conductor that has been received therein, and
wherein the second regions of the socket elements are configured to receive a plug element such that electrical contact is established.
10. The socket according to claim 9 , also comprising:
a contact spring element, which is located in the second regions of the socket elements, in order to prevent a vertical movement of the socket elements and to provide a secure electrical contact with the plug elements in a corresponding plug.
11. The socket according to claim 9 , in which the socket is configured to make electrical contact with a plug to electrically connect two thermoelectric conductors to one another.
12. The plug according to claim 1 , in which the receiver has a strain relief for relieving the strain and mechanically connecting a thermoelectric conductor that has been received therein.
13. The plug according to claim 1 , wherein the receiver has a pear-shaped cross section.