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Head Suspension Assemblies With Internally Preloaded Dimple

IP.com Disclosure Number: IPCOM000047440D
Original Publication Date: 1983-Nov-01
Included in the Prior Art Database: 2005-Feb-07

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Nayak, JH [+details]


This article describes an improvement on the suspension assemblies used in current magnetic disk files. The key concept of this article is as follows: The contact force between the flexure dimple and the suspension is increased by introducing an internal preload without altering or affecting the final geometry of the suspension assembly or the slider bearing preload. For this purpose only a minor alteration in the shape of the flexure profile is required. This is shown in Fig. 1b. The flexure, as manufactured, is to be made such that the flexure legs are curving backwards to a predetermined shape, displacing the dimple towards the suspension side by a prespecified amount. When the flexure is welded to the suspension, the suspension presses the dimple and flattens the flexure legs (Fig. 1c).