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Gimbal limiter for suspension with lift tab

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Gimbal limiter for suspension with lift tab


A head suspension for a disk drive with a load beam having continuous rails and a distal lift tab. A dimple is positioned proximal to the lift tab, either on the load beam or the gimbal, the dimple providing a pitch axis and a roll axis for the slider. The suspension also includes at least one tab member fixed in relation to the load beam, where each of the at least one tab member is aligned with or is distal to the dimple. The at least one tab and a portion of the gimbal define a gimbal limiter that is aligned with or distal to the dimple. The at least one tab member extends either longitudinally or laterally from the load beam at or distal to the dimple.
Related Terms: Disk Drive Slider

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USPTO Applicaton #: #20130021698 - Class: 3602442 (USPTO) - 01/24/13 - Class 360 


Inventors: Michael Allen Greminger, Razman Zambri, Jackson William Brandts

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The Patent Description & Claims data below is from USPTO Patent Application 20130021698, Gimbal limiter for suspension with lift tab.

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BACKGROUND OF THE INVENTION

Components of many electronic, electro-mechanical, and optical devices and systems need precise position and alignment to assure optimal performance. In the case of certain magnetic recording disk drives, for example, a read/write head needs to be carefully positioned with respect to a surface of a disk during use to assure optimum performance and to avoid crashing the head into the disk and causing damage.

Disk drives that utilize a head assembly for reading and/or writing data on a rotatable magnetic disk are well known in the art. In such drives, the head assembly is typically attached to an actuator arm by a head suspension assembly. The head suspension assembly, or suspension assembly, includes a head suspension and a slider onto which a read/write head is provided. The slider and head fly over the spinning disk at precisely determined heights, due to the lift force caused by an air bearing that spins with the disk.

Head suspensions generally include an elongated load beam with a gimbal flexure located at a distal end of the load beam. According to a typical head suspension construction, the gimbal flexure comprises a platform suspended by gimbal arms or struts. The slider, which includes the read/write head or transducer, is mounted to the underside of the platform. The slider is aerodynamically shaped to use the air bearing generated by the spinning disk to produce a lift force off from the disk. During operation of such a disk drive, the gimbal struts permit the slider to pitch and roll about two axes around a load dimple, thereby allowing the slider to precisely follow the disk surface.

The present disclosure provides improved suspensions for precisely supporting the slider during use while precluding excess slider movement during abnormal events, such as external shock.

SUMMARY

One particular embodiment of this disclosure is a head suspension for a disk drive with a load beam having a proximal end and a distal end and having a distal lift tab. The load beam supports a gimbal that has a slider fixed thereto. A dimple is positioned proximal to the lift tab, either on the load beam or the gimbal, the dimple providing a pitch axis and a roll axis for the slider. The load beam includes continuous rails extending along the load beam toward the distal end, the rails extending to at least the dimple. Also included is at least one tab member in fixed relation to the load beam, where each of the at least one tab member is aligned with or is distal to the dimple. The at least one tab and a portion of the gimbal define a gimbal limiter that is aligned with or distal to the dimple.

These and various other features and advantages will be apparent from a reading of the following detailed description.

BRIEF DESCRIPTION OF THE DRAWING

The invention may be more completely understood in consideration of the following detailed description of various embodiments of the invention in connection with the accompanying drawing, in which:

FIG. 1A is a top plan view, FIG. 1B is a side elevation view, and FIG. 1C is a cross-sectional view of a disk drive head suspension without a lift tab having a gimbal limiter.

FIG. 2A is a top plan view, FIG. 2B is a side elevation view, and FIG. 2C is a cross-sectional view of a disk drive suspension design with a lift tab having a gimbal limiter positioned proximal to the dimple.

FIG. 3A is a top plan view, FIG. 3B is a side elevation view, FIG. 3D is a cross-sectional end view of a disk drive suspension design with a lift tab having a gimbal limiter positioned longitudinally even with the dimple; FIG. 3C is a top plan view of a load beam attachment component.

FIG. 4A is a top plan view, FIG. 4B is a side elevation view, and FIG. 4C is a cross-sectional end view of another embodiment of a disk drive head suspension design with a lift tab having a gimbal limiter positioned longitudinally even with the dimple; FIG. 4C is a top plan view of a load beam attachment component.

FIG. 5A is a top plan view, FIG. 5B is a side elevation view, and FIG. 5C is a cross-sectional end view of a disk drive suspension design with a lift tab having a gimbal limiter positioned distal to the dimple.

FIG. 6A is a top plan view, FIG. 6B is a side elevation view, and FIG. 6C is a cross-sectional end view of another embodiment of a disk drive suspension design with a lift tab having a gimbal limiter positioned distal to the dimple.

FIG. 7A is a top plan view, FIG. 7B is a side elevation view, and FIG. 7C is a cross-sectional end view of yet another embodiment of a disk drive suspension design with a lift tab having a gimbal limiter positioned distal to the dimple.

DETAILED DESCRIPTION

OF THE INVENTION

The present disclosure provides head suspensions for precisely supporting a slider on a load beam with a gimbal and a gimbal limiter. The designs are particularly suited for thin load beams (e.g., less than 0.05 mm in thickness) that have a lift tab at the distal end of the beam.

In the following description, reference is made to the accompanying drawing that forms a part hereof and in which are shown by way of illustration various specific embodiments. The description provides additional specific embodiments. It is to be understood that other embodiments are contemplated and may be made without departing from the scope or spirit of the present invention. The following Detailed Description, therefore, is not to be taken in a limiting sense. While the present invention is not so limited, an appreciation of various aspects of the invention will be gained through a discussion of the examples provided below.

Unless otherwise indicated, all numbers expressing feature sizes, amounts, and physical properties are to be understood as being modified by the term “about.” Accordingly, unless indicated to the contrary, the numerical parameters set forth are approximations that can vary depending upon the desired properties sought to be obtained by those skilled in the art utilizing the teachings disclosed herein.

As used herein, the singular forms “a”, “an”, and “the” encompass embodiments having plural referents, unless the content clearly dictates otherwise. As used in this specification and the appended claims, the term “or” is generally employed in its sense including “and/or” unless the content clearly dictates otherwise.



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Previous Patent Application:
Magnetic sensor with perpendicular anisotrophy free layer and side shields
Next Patent Application:
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Industry Class:
Dynamic magnetic information storage or retrieval
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stats Patent Info
Application #
US 20130021698 A1
Publish Date
01/24/2013
Document #
13186947
File Date
07/20/2011
USPTO Class
3602442
Other USPTO Classes
G9B/5147
International Class
11B5/48
Drawings
8


Disk Drive
Slider


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