Sealed laminated electrical connector for helium filled disk drive

A technology for disk drives and electrical connectors, which is applied in the direction of instruments, magnetic recording heads, and the surface of magnetic heads, and can solve problems such as reliability degradation, data loss, and impact on head performance.

Active Publication Date: 2015-06-10
WESTERN DIGITAL TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While some negligible helium leakage is unavoidable, a non-negligible amount of helium leakage is undesirable as it can change the thickness of the gas lubrication film between the head and platter and thus affect the performance of the head
Non-negligible helium leakage is also undesirable as it can alter the tribo-lubrication chemistry of the head-disk interface, potentially leading to reduced reliability, head crashes, and associated data loss

Method used

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  • Sealed laminated electrical connector for helium filled disk drive
  • Sealed laminated electrical connector for helium filled disk drive
  • Sealed laminated electrical connector for helium filled disk drive

Examples

Experimental program
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Embodiment Construction

[0019] FIG. 1 is a plan view showing a schematic diagram of a magnetic disk drive 50 according to the prior art. Disk drive base 52 forms a disk drive enclosure 54 with an adjoining top cover (not shown to allow viewing of internal components). Enclosed within disk drive housing 54 is head gimbal assembly (HGA) 62, which includes a read / write head that can be lifted from the surface of platter 66 by interaction between loading tang 70 and ramp 64. Loading and unloading. Disk platter 66, also enclosed in disk drive housing 54, is mounted on spindle motor 68, which is attached to disk drive chassis 52 and enables disk platter 66 to rotate as indicated by arrow A. The HGA 62 is attached to the actuator arm 56 , for example by swaging at the hole 63 . Actuator arm 56 belongs to head actuator 55 which is arranged in disk drive housing 54 and which pivots about pivot bearing barrel 58 in response to torque from voice coil motor 59 . This torque is produced by the electromagnet in...

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Abstract

A novel disk drive includes a hermetically sealed helium-filled enclosure that has an opening extending through the disk drive base. A laminated electrical connector is disposed inside the enclosure, spans the opening, and is accessible from outside the disk drive base via the opening. The laminated electrical connector has an adhesive layer that is adhered to the disk drive base continuously around the opening, and that has a hole therethrough that is aligned with the opening. The laminated electrical connector includes electrically conductive traces that are electrically connected to the actuator flex cable, and a first insulative layer that is disposed on the trace layer. The laminated electrical connector has a metal foil sealing layer that continuously spans and completely covers the opening, and that has no holes therethrough that are aligned with the opening. The metal foil sealing layer overlaps the adhesive layer continuously around the opening.

Description

technical field [0001] The present invention relates generally to information storage devices, and in particular to hermetically sealed disk drive information storage devices containing helium. Background technique [0002] A typical hard disk drive includes a head disk assembly (HDA) and a printed circuit board assembly (PCBA) attached to the HDA's disk drive chassis. The HDA includes at least one platter (such as a magnetic disk, magneto-optical disk, or optical disk), a spindle motor for rotating the platter, and a head arm assembly (HSA). The PCBA includes the electronics and firmware used to control the rotation of the spindle motor and the position of the HSA, and to provide a data transfer channel between the disk drive and its host. [0003] Spindle motors generally include a rotor, which includes one or more rotor magnets, and a rotating hub on which the disk is mounted and clamped, and a stator. If more than one platter is mounted on the axle, the platters are us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B5/187
CPCG11B25/043G11B33/122
Inventor J·E·雅各布J·R·古斯塔夫森
Owner WESTERN DIGITAL TECH INC
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