Circuit board fixture structure

The utility model relates to a circuit board fixing structure, which comprises a convex cylinder fixed on a panel. The upper end of the convex cylinder is inserted into the location hole cut on the circuit board, the periphery of the convex cylinder is provided with a helical support rib used to support the circuit board, the upper fringe of the helical support rib supports under the circuit board and helically extends to the panel around the convex cylinder. By the design that set the helical support rib on the convex cylinder to support the circuit board, by virtue of the effects of anti-drip and anti-collision that the helical support rib has due to the elastic buffer characteristic in all directions, accordingly the quality of the products can be effectively ensured. Meanwhile, the helical gap of the helical support rib can be taken advantage of to radiate. The utility model has a simple structure and is highly practical.