| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a keyboard which reduces stroke differences between different key touch positions in a back and forth direction, and improves key touch feeling without increasing a depth dimension of the keyboard regardless of a short key body in a turning type keyboard. <P>SOLUTION: A link part 40 includes the first arm 41 and the second arm 42 and they are connected so that a key body 20 freely turns in a key touch/release direction with respect to a base end 30. A front end and a rear end of the first arm 41 are connected to a rear end of the key body 20 and a front end of the base end 30 via connection parts F1 and R1, respectively, and a front end and a rear end of the second arm 42 are connected to the rear end of the key body 20 and the front end of the base end 30 via connection parts F2 and R2, respectively. In a key touch outward progression, a position of a rotation supporting point F1p moves backward only for a distance D1 and a position of a rotation supporting point F2p moves backward only for a distance D2. It is D1<D2, so that a backward displacement amount of the rotation supporting point F2p is larger than the rotation supporting point F1p thereof. <P>COPYRIGHT: (C)2011,JPO&INPIT |
