A deflection unit and method of manufacture.

摘要

Method of manufacturing a deflection unit comprising a set of diametrical deflection coils (saddle type), in which method the coils (6) are placed on a jig (12) which supports each coil at a plurality of locations (A,B) and in which a coil support (5) of synethic material is urged against the free surface of each coil. The coils are mechanically anchored by means of, for example an ultrasonic thermal welding process (13) in which the locations of the coil support situated opposite supported locations of the coils are softened and pressed into the coils. The coils are not deformed in that case and their mutual position defined by the jig is accurately maintained. Said coil support (5) may be made of a thermoplastic material and formed from a plurality of parts