Mouse device

A mouse device adapted to be operated by a thumb, an index finger, and a middle finger of a user, said mouse device comprising:

• a base unit that has
• a base seat being elongated in a front-rear direction, and including
• a bottom face portion,
• an extension face portion that surrounds said bottom face portion, that extends upwardly from said bottom face portion in an up-down direction perpendicular to the front-rear direction, and that has a first lateral section and a second lateral section spaced apart from each other in a left-right direction perpendicular to the front-rear direction and the up-down direction, and
• a housing surrounding said base seat, extending upwardly from said extension face portion of said base seat in the up-down direction, and including
• an operating portion that is adapted for operation by the thumb, that extends upwardly from said first lateral section, and that has
• a main region,
• a front pressing region,
• a rear pressing region disposed behind said front pressing region,
• an upper pressing region disposed above said front pressing region and said rear pressing region, and
• a lower pressing region disposed below said front pressing region, said rear pressing region, and said upper pressing region, said front pressing region, said rear pressing region, said upper pressing region, and said lower pressing region being disposed on said main region, and
• a palm supporting portion that cooperates with said operating portion to surround said base, and
• an inner space cooperatively defined by said base seat and said housing;
• a main button unit that includes a first mouse button and a second mouse button disposed on said base unit, and being respectively adapted for operation by the index finger and the middle finger;
• and
• a lateral pressure sensing unit that is located in said inner space, that is adjacent to said front pressing region, said rear pressing region, said upper pressing region and said lower pressing region, and that is configured to be triggered upon operation by the thumb on said operating portion.