公开(公告)号：US4654737A

公开(公告)日：1987-03-31

申请号：US593140

申请日：1984-03-26

申请人： Donn A. Hopkins ,  Raymond W. Niles, Jr.

发明人： Donn A. Hopkins ,  Raymond W. Niles, Jr.

IPC分类号： G11B5/55 ,  G11B21/08

CPC分类号： G11B5/5521

摘要： A carriage supporting at least one read/write head is displaceable by a rack and pinion drive toward and away from the axis of rotation of a magnetic disk. The carriage has a pair of rollers--one at the inner end of the carriage, the other at the outer end--in contact with a fixed precision guide. The rack is cantilevered from a flexure element projecting from the carriage and formed as an integral part of the carriage. The free end of the rack is resiliently biased so as to urge (i) the rack into firm, meshing engagement with the pinion and (ii) the carriage rollers into positive, preloaded engagement with the guide. The limits of carriage motion and spacing between rollers are such that the line of force between the rack and pinion is always intermediate the axes of the rollers so that the carriage is stable along the entire extent of its travel.The rack is secured to the flexure element with a single screw fastener whose axis is oriented perpendicular to the pinion axis. Rapid and accurate prealignment of the rack and pinion teeth is thereby made possible.A head loading arm, pivotally mounted on the carriage, is biased by a torsion spring toward the carriage. The force applied to the arm by the torsion spring is adjustable so that the head loading force can be precisely predetermined.

摘要翻译： 支撑至少一个读/写头的托架可通过齿条和小齿轮驱动器朝向和远离磁盘的旋转轴线移动。 滑架具有一对辊子，一个在滑架的内端，另一个在外端与固定的精密导轨接触。 机架从从滑架突出的弯曲元件悬臂形成为滑架的整体部分。 齿条的自由端被弹性偏压，以便促使（i）齿条与小齿轮稳固地啮合，并且（ii）滑架滚子与导向器成正面的预加载接合。 滑架运动和滚子间距的限制使得齿条和小齿轮之间的力线总是在辊的轴线之间，使得滑架沿其行程的整个程度是稳定的。 机架通过单个螺钉紧固件固定到挠曲元件，其中轴线垂直于小齿轮轴线定向。 齿条和齿条齿的快速准确的预对准由此成为可能。 枢转地安装在滑架上的头部装载臂被扭转弹簧朝向滑架偏置。 通过扭转弹簧施加到臂上的力是可调节的，使得头部装载力可以被精确地预定。