Opening and closing device

An opening and closing device for using with a first shell and a second shell that are approachable with each other, the opening and closing device comprising:

• a fixing device, including:
• a fixing portion, disposed on the first shell, and provided with a fixing hole;
• a fixing member, wherein one end is pivotally connected to an outer side of the second shell, and when the first shell approaches the second shell, the fixing member rotates so that the other end is inserted into the fixing hole to be engaged with the fixing portion;
• and
• a limiting device, comprising:
• a driving device, disposed on the first shell;
• a limiting portion, disposed on an inner side of the first shell;
• and
• a limiting member, disposed on an inner side of the second shell, wherein one end of the limiting member is provided with a limiting member end portion, and when the first shell approaches the second shell, the limiting member end portion is engaged with the limiting portion,
• wherein the driving device is subjected to an external force to release the engagement between the fixing member and the fixing portion and the engagement between the limiting member end portion and the limiting portion.