Apparatus for fixing a transformer on a drum for use in a video cassette recorder

An apparatus for fixedly attaching a transformer with an opening to a terminal surface of a protruding annular portion of a rotary drum, wherein the rotary drum is provided on a jig and its terminal surface is applied with a bonding agent, the apparatus comprising a sliding member, means for driving the sliding member, a rod for guiding the movement of the sliding member and means for pressing the transformer toward the drum, wherein said pressing means includes:

• a holder, which is an integral part of the sliding member;
• a rod-shaped supporting member, whose one end is attached to the bottom of the holder, and the other end is removably provided with a portion having a larger diameter than that of the supporting member;
• a cap movably fitting around the circumferential surface of the supporting member at the end proximal to the holder in such a way that its vertical position is allowed to be adjusted;
• a ring provided with a groove for accommodating a part of the larger diameter portion of the supporting member, wherein the ring is used for applying a uniform pressure to the rotary transformer and fits around the circumferential surface of the supporting member at the end distal to the holder;
• and
• a resilient member for providing an elastic force to the ring located between the cap and the ring in such a way that the ring is allowed to apply a uniform pressure on the upper surface of the rotary transformer during the pressing operation thereof, thereby fixedly attaching the rotary transformer to the drum.