Button module and electronic device using the same

摘要

A button module ( 2 ) includes a touch pad ( 21 ), a printed circuit board ( 23 ) and at least one elastic contact pad ( 22 ) sandwiched between the touch pad and the printed circuit board. An electronic device includes a frame having at least one protrusion ( 261 ) and the button module. The touch pad includes at least one first locking hole ( 217 ) and the printed circuit board includes at least one second locking hole ( 237 ). The at least one first and second locking holes are corresponding to each other in location, and the at least one protrusion is engaged in the at least one first and second locking holes. The configuration of the protrusions and the first and second locking holes may cooperatively fasten the button module avoiding using bolts and can decrease a thickness.