Side button switch in mobile communication terminal and vibration-preventing device thereof

A side button switch connected to an electronic circuit inside a mobile communications terminal, comprising:

• (a) a switch button having a top at least partially projecting through a key button hole formed in a case of the terminal and a bottom which does not project through the key button hole;
• (b) an elastic member adjacent the bottom of the switch button;
• and
• (c) a tact switch that performs a switch operation by a force generated from the elastic member interoperating with the switch button pushed inside the case.

A side button assembly, comprising:

• at least one button spaced apart from a keypad and configured to be pressed by a user, the button at least partially extending through a side of a case;
• a switch in communication with the button and configured to activate a desired terminal function when the button is pressed by the user;
• and
• a spacer disposed between and contacting both the button and the switch, wherein the spacer is compressed between the switch and the button such that pressure is applied to the switch when the button is pressed by the user.

A side button assembly, comprising:

• at least one button spaced apart from a keypad and configured to be pressed by a user, the button at least partially extending through a side of a case;
• a border portion;
• and
• a spacer connected to the border portion, wherein the spacer is compressed between a switch and the button such that pressure is applied to the switch when the button is pressed by the user.