Printed circuit board with ground conductor for electric motor, and electric motor
View Patent ↗A printed circuit board (PCB), in particular for an electric motor, has two opposite main surfaces with at least one main surface carrying electrical components. A plurality of outer end faces extend between the two opposite main surfaces. One of the outer end faces is provided with a metallization that is connected to a ground conductor on the PCB.
1. An electric motor having a PCB comprising:
two opposite main surfaces wherein at least one of the two opposite main surfaces carries electrical components;
a plurality of outer end faces that extend between the two opposite main surfaces, one of the plurality of outer end faces being provided with a metallization that is connected to a ground conductor on the PCB;
a motor ground contact that contacts the metallization on the one of the plurality of outer end faces of the PCB;
a stator;
a rotor; and
wherein the motor ground contact comprises an electrical ground connection between the stator and the PCB, the motor ground contact being held fixed by a housing.
2. The electric motor of claim 1 wherein the metallization extends over an entire surface of the one of the plurality of outer end faces.
3. The electric motor of claim 1 wherein the metallization extends over only a portion of the one of the plurality of outer end faces.
4. The electric motor of claim 1 wherein the one of the plurality of outer end faces that carries the metallization comprises a flat surface.
5. The electric motor of claim 1 wherein the one of the plurality of outer end faces that carries the metallization has a groove.
6. The electric motor of claim 1 wherein the motor ground contact is formed as an elastic tab.
7. The electric motor of claim 1 including a holder, into which the PCB can be slidingly inserted so that the metallization comes into contact with the motor ground contact.
8. The electric motor of claim 1 wherein the metallization is provided directly on the one of the plurality of outer end faces.
9. The electric motor of claim 1 wherein the metallization comprises a conductive layer of material provided on the one of the plurality of outer end faces.
10. The electric motor of claim 1 wherein the motor ground contact is formed as an elastic tab that directly engages a contact surface of the metallization in a resilient manner.
11. The electric motor of claim 1 wherein the housing includes a sliding guide comprising a holder for the PCB.
12. The electric motor of claim 11 wherein the PCB is positioned within the electric motor such that the metallization on the outer end face directly contacts the motor ground contact.