| 摘要 |
A friction device, keypad assembly and portable electronic device are disclosed. In one embodiment, there is provided a keypad assembly for a portable electronic device, comprising: a keypad having a number of keys each having an actuator post attached to a back side thereof; a circuit board; a light guide located between the keypad and the circuit board, the light guide defining a number of holes which provide paths for respective actuator posts to travel through to contact respective electrical switches on the circuit board; and at least one friction device located in one of the holes of the light guide, the friction device providing a physical barrier limiting movement of the actuator post in a direction normal to a direction of actuation, the friction device applying friction to at least one side of the actuator post and resisting movement of the actuator post in the direction of actuation. |
