SMD switch and touchpad module and computing device using same

A touchpad module, comprising:

• a circuit board comprising at least one circuit board contact part;
• and
• a surface mount device switch comprising:
• a pedestal comprising a pedestal conducting part and at least one pedestal contact part, wherein the pedestal conducting part is electrically connected with the at least one pedestal contact part, and the at least one pedestal contact part is electrically connected with the at least one circuit board contact part;
• a flexible conducting element connected with the pedestal and electrically connected with the at least one pedestal contact part, wherein the flexible conducting element is not contacted with the pedestal conducting part, wherein when the at least one pedestal contact part is electrically connected with the at least one circuit board contact part, the flexible conducting element and the circuit board are separated from each other by a spacing distance;
• and
• a metal dome located under the pedestal conducting part and the flexible conducting element,
• wherein when the surface mount device switch pushes a triggering part, the metal dome is subjected to deformation and contacted with the pedestal conducting part and the flexible conducting element, so that the pedestal conducting part and the flexible conducting element are electrically connected with each other, wherein as the flexible conducting element is contacted with and pushed by the metal dome, the flexible conducting element is deformable in a direction toward the circuit board to generate an elastic force, wherein when the triggering part is not pushed by the surface mount device switch, the flexible conducting element is not contacted with and pushed by the metal dome and the flexible conducting element is restored to an original shape in response to the elastic force.

A computing device, comprising:

• a casing, wherein a fixing frame is concavely formed in the casing;
• a processor disposed within the casing;
• and
• a touchpad module disposed within the fixing frame and electrically connected with the processor, wherein the touchpad module comprises a circuit board and a surface mount device switch, wherein the circuit board comprises at least one circuit board contact part, and the surface mount device switch comprises:
• a pedestal comprising a pedestal conducting part and at least one pedestal contact part, wherein the pedestal conducting part is electrically connected with the at least one pedestal contact part, and the at least one pedestal contact part is electrically connected with the at least one circuit board contact part;
• a flexible conducting element connected with the pedestal and electrically connected with the at least one pedestal contact part, wherein the flexible conducting element is not contacted with the pedestal conducting part, wherein when the at least one pedestal contact part is electrically connected with the at least one circuit board contact part, the flexible conducting element and the circuit board are separated from each other by a spacing distance;
• and
• a metal dome located under the pedestal conducting part and the flexible conducting element,
• wherein when the surface mount device switch pushes a triggering part, the metal dome is subjected to deformation and contacted with the pedestal conducting part and the flexible conducting element, so that the pedestal conducting part and the flexible conducting element are electrically connected with each other, wherein as the flexible conducting element is contacted with and pushed by the metal dome, the flexible conducting element is deformable in a direction toward the circuit board to generate an elastic force, wherein when the triggering part is not pushed by the surface mount device switch, the flexible conducting element is not contacted with and pushed by the metal dome and the flexible conducting element is restored to an original shape in response to the elastic force.