| 摘要 |
A mouse device. A circuit board is disposed on a bottom cover and includes an encoder, a first switch, and a second switch opposite the first switch. A support base is movably disposed on the bottom cover and wiggles with respect thereto. The support base is disposed between the first and second switches and includes a first retardant portion and a second retardant portion. The first retardant portion opposes the first switch. The second retardant portion opposes the second switch. A roller pivots on the support base and includes a shaft hole. A rotating shaft engages the shaft hole and connects to the encoder. A first gap exists between the rotating shaft and the shaft hole. The roller and support base wiggle with respect to the rotating shaft by the first gap, forcing the first retardant portion or second retardant portion to press the first switch or second switch.
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