Printed circuit board integrated switch
View Patent ↗A printed circuit board includes a first layer on which a first stationary contact terminal is formed and one or more second layers spaced apart from the first layer by at least one intermediate layer. A portion of the one or more second layers extends into a recess formed by a discontinuity of the intermediate layers. The portion is flexible and has a second terminal which can be brought into contact with the first stationary terminal.
1. A printed circuit board comprising:
a substrate that includes;
a first substrate layer;
a second substrate layer formed over the first substrate layer;
a third substrate layer formed over the second substrate layer;
a fourth substrate layer formed over the third substrate layer;
a fifth substrate layer formed over the fourth substrate layer,
wherein a flat and flexible portion of the third substrate layer extends into a recess formed by a discontinuity of the second and fourth substrate layers;
a first conductive strip layer formed on the flat and flexible portion of the third substrate layer;
a second conductive strip layer formed on the fifth substrate layer in the recess;
an actuator located on or above the fifth substrate layer over the recess,
wherein the actuator is arranged so that actuation of the actuator exerts a force on the first conductive strip layer causing the flat and flexible portion of the third substrate layer to move in the recess so that there is contact between the first conductive strip layer formed on the flat and flexible portion of the third substrate layer and the second conductive strip layer formed on the fifth substrate layer.
2. The printed circuit board according to claim 1 , wherein a first conductive strip layer is connected with or is formed with a first terminal and a second conductive strip layer is connected with or is formed with a second terminal.
3. The printed circuit board according to claim 1 , wherein the flat and flexible portion of the third substrate layer is a tongue.
4. The printed circuit board according to claim 3 , wherein the actuator is a member, such as a tool.
5. The printed circuit board according to claim 3 , wherein the actuator is a coil, and magnetic material is arranged on the flat and flexible portion of the third substrate layer.
6. The printed circuit board according to claim 5 , wherein the coil is a solenoid component.
7. The printed circuit board according to claim 5 , wherein the coil includes additional substrate layers in which a coil pattern is embedded, the additional layers forming part of the printed circuit board.
8. The printed circuit board according to claim 1 , wherein the flat and flexible portion of the third substrate layer is a bridge.
9. The printed circuit board according to claim 8 , wherein a heat circuit is provided on or in the flat and flexible portion of the third substrate layer for exposing the flat and flexible portion of the third substrate layer to thermal expansion when the heat circuit is subject to an electrical current.
10. The printed circuit board according to claim 9 , wherein the heat circuit includes a separate heat strip arranged on the flat and flexible portion of the third substrate layer.
11. The primed circuit board according to claim 9 , further comprising:
a conductor for providing via a low or high pass filter to provide heat to the flat and flexible portion of the third substrate layer.
12. The printed circuit board according to claim 1 , wherein the flat and flexible portion of the third substrate layer and a portion the first and second conductive strip layers are housed inside of the recess, the recess being enclosed in the printed circuit board.
13. The printed circuit board according to claim 1 wherein at least one the conductive strip layers, the flat and flexible portion of the third substrate layer, and the recess form a strip-line.