Electrical connecting system
An electrical connecting system is described for contacting an electronic module with multiple printed conductors of a flexible printed circuit. The printed conductors are enclosed between a lower and an upper cover film, and the electronic module has at least one circuit board hich is embedded in a plastic housing. According to the invention, the electronic module has at least one contact spring. A first end section of the contact spring is connected in an electrically conductive manner to the circuit board via a connecting point, and a second end section of the contact spring has two legs which extend in a U shape, between which a printed conductor is situated. An electrical contact which is less susceptible to failure results on both sides between the contact spring and the printed conductor. Also described is an electrical connecting system in which the printed conductor is electrically contacted on one side, and instead of at least one one-piece contact spring, in each case a connecting piece and a spring clip are present. The electrical connecting systems allow an electrically reliable connection to be established which is also sufficiently capable of withstanding mechanical load, by simply inserting the printed circuits into the contact springs, or between the connecting pieces and the spring clips in the electronic modules.
1. An electrical connecting system for contacting an electronic module with multiple printed conductors of a flexible printed circuit, comprising:
multiple printed conductors for connecting the electronic module with a flexible printed circuit, the printed conductors being enclosed between a lower and an upper cover film, and the electronic module having at least one circuit board which is substantially fully embedded in a plastic housing;
wherein the electronic module has at least one contact spring, a first end section of the contact spring being connected in an electrically conductive manner to the circuit board via a connecting point, and a second end section of the contact spring having two legs which extend in a U shape, between which a printed conductor for establishing an electrically conductive connection is situated.
2. The electrical connecting system of claim 1 , wherein the printed conductor is at least one of clamped between the two legs and is thermally joined to at least one leg of the contact spring.
3. The electrical connecting system of claim 1 , wherein the lower and the upper cover film each have at least one recess in a connecting region of the printed circuit.
4. The electrical connecting system of claim 1 , wherein a leg of the contact spring has at least one prominence which engages with the recess in the lower cover film.
5. The electrical connecting system of claim 1 , wherein the at least one contact spring is formed from an electrically conductive and elastic material.
6. The electrical connecting system of claim 1 , wherein the at least one contact spring is accommodated in at least one contact spring strip.
7. The electrical connecting system of claim 1 , wherein strain relief of the printed circuit is provided.