Abstract: A structural element fixing structure is provided. A flange of a first fixing element is connected with a side surface of a first shaft of the first fixing element. A first structure is fixed on the first fixing element. A second fixing element clamps the flange. An accommodating portion of the second fixing element is connected with a groove portion of the second fixing element. The accommodating portion has an accommodating space configured to accommodate the flange. A second shaft of the second fixing element is connected with the accommodating portion and is on a side of the accommodating portion facing away from the groove portion. A second structure is fixed on the second shaft of the second fixing element. The second fixing element separates the second structure and the first fixing element.

Abstract: A circuit board fixing structure comprising a first fixing element and a first circuit board is provided. The first fixing element includes a shaft, a first flange and a second flange. One end of the shaft is provided with a receiving portion. The first flange is connected with a side surface of the shaft. The second flange is connected with the side surface of the shaft and is spaced apart from the first flange. The first circuit board is fixed on a surface of the first flange away from the second flange.

Abstract: A structural element fixing structure is provided. A flange of a first fixing element is connected with a side surface of a first shaft of the first fixing element. A first structure is fixed on the first fixing element. A second fixing element clamps the flange. An accommodating portion of the second fixing element is connected with a groove portion of the second fixing element. The accommodating portion has an accommodating space configured to accommodate the flange. A second shaft of the second fixing element is connected with the accommodating portion and is on a side of the accommodating portion facing away from the groove portion. A second structure is fixed on the second shaft of the second fixing element. The second fixing element separates the second structure and the first fixing element.

Abstract: A circuit board fixing structure comprising a first fixing element and a first circuit board is provided. The first fixing element includes a shaft, a first flange and a second flange. One end of the shaft is provided with a receiving portion. The first flange is connected with a side surface of the shaft. The second flange is connected with the side surface of the shaft and is spaced apart from the first flange. The first circuit board is fixed on a surface of the first flange away from the second flange.

Abstract: An expansion card holding mechanism is disposed on a flow guiding structure in a device casing. The expansion card holding mechanism includes a sliding slot structure and a sliding part. The sliding slot structure is disposed on the flow guiding structure and includes two opposite side walls. The sliding part includes a sliding body and a positioning portion. The sliding body is slidably disposed along a direction between the two side walls. The positioning portion protrudes from the sliding body and is slidably engaged with one of the two slide walls. The sliding body has a flow-guiding through hole and an expansion card holding slot. The flow-guiding through hole is aligned with a vent of the flow guiding structure in the direction, so that air flow can pass through the flow guiding structure and the sliding part for dissipating heat from an expansion card.

Abstract: An electromagnetic shielding structure uses at least one expansion card blank to cover an expansion card window. The expansion card blank includes a plate body, a fixing portion, an abutting portion, and an adjoining portion. The fixing portion and the abutting portion are connected to two opposite sides of the plate body respectively. The adjoining portion is connected to another side of the plate body. The expansion card blank is fixed to the expansion card window through the fixing portion and the abutting portion, so as to cover the expansion card window. In different practical instances, the adjoining portion touches a side fringe portion of the expansion card window, the plate body of another adjacent expansion card blank, or a fixing plate of an adjacent expansion card, so that the expansion card window can be covered completely for electromagnetic shielding.

Abstract: A curve forming and riveting method includes steps of providing a sheet metal member, a riveting member and a forming mold, wherein the forming mold has a curve forming portion; attaching the sheet metal member to the curve forming portion; assembling the riveting member to the sheet metal member; and riveting the riveting member and the sheet metal member together by the curve forming portion and forming a curve contour on the sheet metal member corresponding to the curve forming portion.