COLOR CATHODE RAY TUBE

PURPOSE:To enable a sure return of a color selection means to a specified position when a shock is eliminated by providing a protrusion and a recess mutually linked to the top surface of a stub pin and the base of a cap, and coating them with solid lubricants to reduce their frictional resistance even in an intense vacuum. CONSTITUTION:A protrusion 22 and a recess 23 are arranged on the respective centers of the top surface 15a of a stud pin 15 and the oppositely positioned base 21a of the cap 21. Then, the so called solid lubricant films 32 and 33 such as gold, silver and boron nitride are applied at least to parts where mutually linked protrusion 22 and the concave 23 make mutual contact. Therefore, when a large external shock is applied, contact between the inner surface or the opened inner peripheral edge of the cap 21 and the outer peripheral surface of the stub pin 15 is made across relatively a large area, and their sliding contact part is made with small frictional resistance since the contact parts are coated with solid lubricants. Accordingly, rocking or movement of the linked parts are smoothened, and their linked state returns to its original position after the external force is eliminated.