The present invention focus on the FBT to be chakseol the FBT one side while increasing the contact force of the focus unit volume sliders and the output terminal for the high-voltage take-off for adjusting the focus and screen voltage of the picture tube, removing noise generated when the variable voltage It relates to a unit that the technical configuration, FBT focus unit 110 is a slider that the bottom has an opening 141 with one side opening of the lower rotating part 130 of the knob body 120 is formed to project in the coupling groove (140 ) is formed in this slider 150, the coupling being ever fixed, the slider 150 is inserted into the interior of the focusing unit 110 installed ever variable volume, the side of the slider 150, the knob body (120 ) and is bent coaxially with the center terminal section 170 is connected to the connection protrusion 200 of the output terminal portion 160 is positioned to focus the lower unit 110 is formed, the slider (15 0) is formed of an angle bend and the other side to the base to be adjustable terminal piece 180 is integrally provided ever come into contact with the resistor pattern of the ceramic substrate 190 is mounted inside of the focus unit 110.
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