Latching mechanism and computer chassis using the same

A computer chassis, comprising:

• a housing;
• a sideboard defining a latching hole, the latching hole comprising sidewalls;
• and
• a latching mechanism mounted in the housing and cooperating with the latching hole to detachably latch the sideboard to the housing, the latching mechanism comprising:
• a supporting assembly secured to the housing and comprising a base, the base defining a first positioning hole;
• a first latching member comprising a sector-shape through hole, a first gear portion, and a first hook, the first gear portion being formed in a sidewall of the sector-shape through hole, the first latching member further defining a first through hole arranged between the first gear portion and the first hook;
• a second latching member comprising a second gear portion and a second hook, the second gear portion being sector-shaped, the second latching member further defining a second through hole arranged between the second gear portion and the second hook;
• a rotation shaft passing through the second through hole and the first through hole and partially received in the first positioning hole;
• a gear received in the sector-shape through hole to engaged with the first gear portion and the second gear portion;
• a first elastic member, one end of the first elastic member being secured to the first latching member, and an opposite end of the first elastic member being secured to the second latching member;
• and
• a pressing assembly moveably connected to the rotation shaft;
• wherein, when pressure is applied on the pressing assembly, the spring force of the first elastic member causes the first latching member and the second latching member to rotate in opposite directions until the first hook and the second hook are opposite to each other to engage sidewalls of the latching hole, or until the first hook and the second hook face each other to disengage from the sidewalls of the latching hole.