Patent ID: 7872862

Claim:
A fixing device for detachably fastening an electronic element inside, the electronic element having a first connection member, the fixing device comprising: a housing having two opposite inner walls; and two fastening module respectively disposed on the two opposite inner walls, each fastening module comprising: a positioning frame comprising a first pair of positioning surfaces and a second pair of positioning surfaces; and a positioning disk being rotatably connected with the positioning frame and having a concave section with a pair of inner side surfaces; when the positioning disk is rotatably connected with the positioning frame, the positioning disk is disposed between the first pair of positioning surfaces, the positioning disk is disposed between the second pair of positioning surfaces, and either one of the second pair of positioning surfaces having a second connection member, wherein the positioning disk is rotated relative to the positioning frame to be selectively at a first position or a second position, when the positioning disk is at a first position, the pair of inner side surfaces is aligned with the first pair of positioning surfaces to form a pair of continuous surfaces allowing the electronic element to be inserted between, when the positioning disk is rotated from the first position to the second position, the pair of inner side surfaces is aligned with the second pair of positioning surfaces, and the first and second connection members engage each other to fasten the electronic element.