PROBLEM TO BE SOLVED: To provide a reactor which decreases a number of components, can securely fix an assembly to a case, and has excellent assembling workability.SOLUTION: A reactor is equipped with: a coil 2 which has winding portions 2a and 2b; a magnetic core 3 which has parts disposed in the winding portions; an interposing member 5 which has parts interposed between the winding portions and the magnetic core; and a bottomed container-shaped case 4 for storing an assembly 10 of the coil, the magnetic core, and the interposing member. The interposing member 5 is equipped with: a fixing portion 53f which has a through-hole of a fastening member 9, is fastened on an inner bottom surface side of the case 4 by the fastening member 9, and fixes the assembly to the case 4; and a pressing portion which is a member integrally formed with the fixing portion and interposed between an area on the inner bottom surface side of the case 4 on an inner bottom surface of the winding portion and the magnetic core, and presses the coil on the inner bottom surface of the case 4 with the fixing of the case 4 to the fixing portion 53f.SELECTED DRAWING: Figure 1
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