Non-operational shock mitigation for a suspension device

Patent metadata

Field	Value
Publication number	US-11900972-B2
Application number	US-202117342297-A
Country	US
Kind code	B2
Filing date	Jun 8, 2021
Priority date	Jun 10, 2020
Publication date	Feb 13, 2024
Grant date	Feb 13, 2024

Abstract

A flexure is described herein. The flexure includes a slider tongue with a proximal end and a distal end. The sliding tongue including a leading edge at the proximal end prone to contact an undersurface of a load beam attached to the flexure. The flexure also includes a magnetic read/write head slider attached to the slider tongue at the distal end, at least one PZT microactuator affixed to the slider tongue, between the proximal end and the distal end, and at least one dampening device at the leading edge of the slider tongue configured to reduce an impulse during a non-operational shock event and reduce stress on the at least one PZT microactuator.

First claim

We claim:

1. A flexure comprising:
a slider tongue with a proximal end and a distal end, the slider tongue including a leading edge at the proximal end; and
a set of dampening devices extending outwards from the leading edge of the slider tongue along a same plane as the slider tongue, the set of dampening devices including at least one dampening device at each corner of the leading edge and at least two dampening devices positioned between the dampening devices at each corner of the leading edge, the each of the set of dampening devices are configured with an end formed to soften an impact of each dampening device against the load beam to reduce an impulse during a non-operational shock event.

2. The flexure of claim 1 , wherein any of the set of dampening devices are made from a base metal material extending from a surface of the slider tongue.

3. The flexure of claim 1 , wherein any of the set of dampening devices include a viscoelastic material attached to the slider tongue.

4. The flexure of claim 1 , wherein the at least one dampening device is curved at an end in a direction of the proximal end.

5. A suspension comprising:
a flexure including:
a slider tongue with a proximal end and a distal end, the slider tongue including a leading edge at the proximal end,
a magnetic read/write head slider attached to the slider tongue at the distal end,
at least one actuator affixed to the slider tongue, between the proximal end and the distal end, and

a set of dampening devices extending outwardly from the leading edge of the slider tongue along a same plane as the slider tongue, the set of dampening devices including at least one dampening device at each corner of the leading edge and at least two dampening devices positioned between the dampening devices at each corner of the leading edge, each of the set of dampening devices are configured with an end formed to soften an impact of the at least one dampening device against the load beam to reduce an impulse during a non-operational shock event; and
the load beam including:
a mounting surface configured to receive the flexure, and
one or more damping material positioned at a location of where the slider tongue contacts the mounting surface of the load beam during the non-operational shock event.

6. The suspension of claim 5 , wherein any of the set of dampening devices are made from a base metal material extending from a surface of the slider tongue.

7. The suspension of claim 5 , wherein any of the set of dampening devices include a viscoelastic material attached to the slider tongue.

8. The suspension of claim 5 , wherein the at least one dampening device is curved at an end that contacts the load beam.

9. The suspension of claim 5 , wherein the one or more damping material is made up of viscoelastic material.

10. The suspension of claim 5 , comprising one or more partially etched area, each of the one or more partially etched area is located at the one or more damping material.

Assignees

• Magnecomp Corp

Inventors

• Ee Kuen Chee
• Glaess David

Classifications

• G11B5/4833 Primary

  Structure of the arm assembly, e.g. load beams, flexures, parts of the arm adapted for controlling vertical force on the head (G11B5/484 takes precedence) · CPC title

• G11B5/4826 Primary

  Mounting, aligning or attachment of the transducer head relative to the arm assembly, e.g. slider holding members, gimbals, adhesive (G11B5/484 takes precedence; details of head housings or structures G11B5/10, G11B5/127; adjustment relative to the record carrier G11B5/56) · CPC title

• G11B5/59694

  System adaptation for working during or after external perturbation, e.g. in the presence of a mechanical oscillation caused by a shock · CPC title