Expansion toolbox mechanism

The utility model relates to an expansion toolbox mechanism, include that a cavity, an open -ended casing and a cross section are sectorial box, the box links to each other with the box through two connecting rod sliding block mechanisms, corresponding rigid coupling is distinguished on the inner wall of shell opening department by two connecting rod sliding block mechanisms, connecting rod sliding block mechanism is including integrating with in a row, and an at least slider and a link mechanism connect the track rigid coupling on the inner wall of shell opening department, slider sliding connection on the connection track, coupling mechanism and oldham coupling, box again with the link mechanism rigid coupling, realize the expansion of box and close through the slip and the flexible of link mechanism of slider on connecting the track. Make things convenient for drawing and placing, easy operation of instrument. 本实用新型涉及种展开式工具箱机构，包括个中空、面开口的壳体和个横截面为扇形的箱体，箱体通过两个连杆滑块机构与箱体相连；两个连杆滑块机构分别相对应的固接在壳体开口处的内壁上；连杆滑块机构包括连接轨