DEFLECTION YOKE OF CATHODE-RAY TUBE

PROBLEM TO BE SOLVED: To finely adjust a position of a magnetic core against a deflection coil and improve axial displacement of both with simple operation by having a horizontal deflection coil, a vertical deflection coil, and the magnetic core and providing a position adjustment mechanism of the magnetic core against the deflection coil on a side of an electronic gun. SOLUTION: A core support piece 4 is integrally formed in parallel to a center axis of a defection yoke than a back flange 7B, for example, of a separator 7 and is provided at four positions of mutually opposite to a horizontal direction and mutually opposite to a vertical direction, for example. An adjustment bolt 5 is mounted to each core support piece 4. Thereby, if shafts of horizontal and/or vertical deflection coil and a magnetic core 6 are displaced by dispersion during manufacture of the magnetic core 6, the adjustment bolt 5 of a position adjustment mechanism 3 is turned, thereby the core support piece 4 being curved and displaced to push up an internal diameter part of the magnetic core 6 and making it possible to adjust the position of the magnetic core 6.