Button assembly and controller including the same

A controller, comprising:

• a button assembly, including:
• a pedestal, a middle of the pedestal having an accommodating groove penetrating upward through a top surface of the middle of the pedestal, two opposite sides of the pedestal having two limiting portions oppositely protruded outward;
• a pressure sensor module mounted in the accommodating groove of the pedestal;
• and
• a key cap covered on the pressure sensor module, a bottom surface of the key cap having a contact portion contacting with the pressure sensor module, two opposite sides of the key cap having an active portion and a fixing portion protruded outward, the active portion and the fixing portion being mounted to the two limiting portions, respectively, in processes of pressing and releasing the key cap, the two active portions moving downward and upward to one limiting portion;
• a casing mounted under the button assembly;
• a fastening frame mounted in the casing;
• a circuit board mounted under the fastening frame and the button assembly and is mounted in the casing;
• an outer shell, the casing, the circuit board and the fastening frame together with the button assembly being disposed in the outer shell;
• and
• a top cover covered on the outer shell, and the top cover covering the button assembly, the casing the circuit board and the fastening frame, a middle of the top cover opening an opening vertically penetrating through the top cover, the key cap being exposed outside from the opening.

A button assembly adapted for being mounted in a controller, comprising:

• a pedestal, two opposite sides of the pedestal having two limiting portions oppositely protruded outward;
• a pressure sensor module mounted in the pedestal, a top of the pressure sensor module having a soft material sensor, the soft material sensor having an elasticity;
• and
• a key cap covered on the pressure sensor module, a bottom surface of the key cap having a contact portion contacting with the pressure sensor module, two opposite sides of the key cap having an active portion and a fixing portion protruded outward, the active portion and the fixing portion being mounted to the two limiting portions, respectively, in processes of pressing and releasing the key cap, the active portions moving downward and upward to the one limiting portion.