Patent ID: 8558125

Claim:
A button-key structure, comprising: a plurality of button-keys arranged next to each other; a sliding rib disposed on at least one of the button-keys on a downstream side in a direction that the button-keys are pushed; a button-key supporting portion disposed on the downstream side in the direction that the button-keys are pushed, said button-key supporting portion including a guide portion disposed between the button-keys substantially in parallel to the direction that the button-keys are pushed, said button-key supporting portion further including a through hole facing at least one of the button-keys and a pushup arm disposed in the through hole for pushing up the one of the button-keys; and a button guide having a surface substantially parallel to the sliding rib and disposed to slidably engage with the sliding rib and an inner wall of each of the button-keys, wherein said guide portion is formed to have a length smaller than a length of each of the button-keys from a finger contact surface thereof to a contact portion thereof with the pushup arm, and said button-keys are arranged away from each other with a specific space in between at an upper portion thereof.