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1. 发明授权

US06195234B1 Magnetic discs with raised features in the clamping area 有权
标题翻译：在夹紧区域具有凸起特征的磁盘
公开(公告)号：US06195234B1
公开(公告)日：2001-02-27
申请号：US09133720
申请日：1998-08-13
申请人： Ramesh Sundaram , John L. Brand , Subrahmanyan Nagarajan , James Rex Staggers, Jr. , Walter Wong
发明人： Ramesh Sundaram , John L. Brand , Subrahmanyan Nagarajan , James Rex Staggers, Jr. , Walter Wong
IPC分类号： G11B582
CPC分类号： G11B17/038 , G11B5/82 , G11B17/02 , G11B23/0021 , G11B23/0035
摘要： A disc drive, includes a base, a disc stack rotatably attached to the base, and an actuator assembly movably attached to the base. The actuator assembly also includes a bearing housing, head mounting arms, head suspensions attached to the head mounting arms and a head assembly attached to the head suspension. The disc drive also includes a hub having a cylindrical body. The hub includes a disc mounting flange on one end of the hub. A disc has an opening therein sufficient to allow the hub to fit within the opening of the disc. The disc has two substantially flat data surfaces. The disc also includes a disc clamping portion located near the opening in the disc. A clamp is used to attach the disc to the hub. At least one disc is placed onto the hub and onto the mounting flange of the hub. The clamp is then used to clamp the disc to the hub. The disc clamping portion includes features for accommodating differences in flatness between the disc surfaces, the mounting flange of the hub and the clamp. The features include a first raised feature which extends above the first data surface of the disc, and a second raised feature which extends above the second data surface of the disc. The features are either bumps or annular rings positioned on the disc mounting surface. The bumps or rings may be formed using a laser. The ring may also include a multiplicity of individual bumps. As the disc is clamped to the hub, the raised feature deforms to accommodate the mismatch in flatness between the disc surfaces, the mounting flange of the hub, and the clamp. The clamp may include a roughened disc clamping surface. The upper surface of the disc mounting flange may also be roughened.
摘要翻译：盘驱动器包括基座，可旋转地附接到基座的盘叠和可移动地附接到基座的致动器组件。致动器组件还包括轴承壳体，头部安装臂，附接到头部安装臂的头部悬挂件和附接到头部悬架的头部组件。盘驱动器还包括具有圆柱体的轮毂。轮毂包括在轮毂的一端的盘安装法兰。盘具有足够的开口，以允许轮毂装配在盘的开口内。盘具有两个基本平坦的数据表面。盘还包括位于盘的开口附近的盘夹紧部分。夹具用于将光盘连接到集线器。至少一个盘被放置在轮毂上并到轮毂的安装凸缘上。然后使用夹具将盘夹紧到轮毂上。盘夹紧部分包括用于适应盘表面，轮毂的安装法兰和夹具之间的平坦度的差异的特征。特征包括在盘的第一数据表面上方延伸的第一凸起特征，以及在盘的第二数据表面上方延伸的第二凸起特征。这些特征是位于盘安装表面上的凸起或环形环。凸起或环可以使用激光形成。环也可以包括多个单独的凸块。当盘被夹紧到轮毂时，凸起的特征变形以适应盘表面，轮毂的安装凸缘和夹具之间的平坦度的不匹配。夹具可以包括粗糙的盘夹紧表面。盘安装法兰的上表面也可以被粗糙化。

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