Patent ID: 6034844
Filing Date: 2000-03-07
Classification: F16C,G11B

Abstract:
A video cassette recorder having a head drum assembly, characterized in that the head drum assembly, comprises:a stationary drum including bearing cavity for retained an oil lubricant, the bearing cavity having a inclination to a main frame of the video cassette recorder;a supporting shaft divided into an upper portion and a lower portion, the lower portion fixedly fitted into the stationary drum;a rotary drum mounted around the upper portion of the supporting shaft;means for rotating the rotary drum; andbearing means for rotatably supporting the rotary drum and including a bearing fitted onto a lower end part of the rotary drum and mounted for rotating together with the rotary drum, the bearing having a thrust support surface being in contact with the sliding surface of the bearing cavity, wherein the bearing further has a pumping element for pumping the oil lubricant in such a way that the oil lubricant is uniformly distributed between the thrust support surface and the sliding surface.