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disk device

A disk-shaped, sleeve-shaped technology that is applied to the installation of arm parts, the arrangement/installation of recording heads, and data recording, etc., and can solve problems such as increased grease scattering

Active Publication Date: 2021-01-29
KK TOSHIBA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a possibility that the scattering of grease from the unit bearing increases

Method used

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Experimental program
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Effect test

no. 1 Embodiment approach

[0022] As the disk device, the hard disk drive (HDD) of the first embodiment will be described in detail.

[0023] figure 1 It is an exploded perspective view of the HDD of the first embodiment shown with the top cover removed.

[0024] The HDD includes a flat, substantially rectangular casing 10 . The housing 10 has a rectangular box-shaped base 12 with an open upper surface and a top cover 14 . The top cover 14 is screwed to the base body 12 through a plurality of screw members 13 to close the upper opening of the base body 12 . The base body 12 has a rectangular bottom wall 12a facing the top cover 14 with a gap therebetween, and side walls 12b standing upright along the periphery of the bottom wall. The base body 12 is integrally formed of, for example, aluminum. The top cover 14 is formed in a rectangular plate shape, for example, from stainless steel. The top cover 14 is screwed on the side wall 12 b of the base body 12 to close the upper opening of the base body 12 ...

no. 2 Embodiment approach

[0063] Figure 7 It is a cutaway perspective view showing the actuator block portion of the head actuator unit in the HDD of the second embodiment, Figure 8 is a cross-sectional view of the actuator block portion of the head actuator assembly. Figure 9 is a cross-sectional view schematically showing the gap between the bearing units.

[0064] According to the second embodiment, in the head actuator unit, the configuration of the boundary portion between the upper and lower two bearing units is different from that of the first embodiment described above. Such as Figure 7 as well as Figure 8 As shown, in the second embodiment, the sleeve 52 of each bearing unit 50 integrally has: an annular first rib (first stepped portion) 56a protruding from one end surface in the axial direction; Two ribs (second step portion) 56b protrude from the other end surface in the axial direction. The first rib 56 a is provided coaxially with the sleeve 52 and has a diameter substantially eq...

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Abstract

Provided is a disc device in which reliability is improved by preventing grease from being scattered. According to an embodiment, a disk drive includes a first actuator unit and a second actuator unit. The first actuator unit is rotatably supported by the support shaft via the first bearing unit. The second actuator unit is rotatably supported by the support shaft via the second bearing unit. The first bearing unit has a first sleeve and a ball bearing. The second bearing unit has a second sleeve and a ball bearing. The first sleeve has a first end surface opposite to the second sleeve and an annular first stepped portion protruding from the first end surface to the second sleeve side, and the second sleeve has a space between the first stepped portion and the first stepped portion. The opposing second end surface and an annular second stepped portion protruding from the second end surface toward the first sleeve. The second stepped portion is located at a position aligned with the first stepped portion in the radial direction of the first sleeve, and faces the first stepped portion and the first end surface with a gap therebetween.

Description

[0001] related application [0002] The application enjoys the priority of the Japanese patent application No. 2018-51493 (filing date: March 19, 2018) as the earlier application. This application incorporates the entire content of the earlier application by reference to this earlier application. technical field [0003] Embodiments of the present invention relate to a disk device having a head actuator assembly. Background technique [0004] As a disk device, for example, a hard disk drive (HDD) includes a magnetic disk arranged in a housing, a spindle motor that supports the magnetic disk and drives the rotation of the magnetic disk, an actuator unit that supports the magnetic head, a voice coil motor that drives the actuator unit, and A flexible printed circuit board unit (hereinafter referred to as an FPC unit) and the like. [0005] The actuator unit includes an actuator block having a plurality of arms and a unit bearing attached to a mounting hole of the actuator bl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B5/55
CPCG11B5/5569G11B5/4813
Inventor 赤冢直人
Owner KK TOSHIBA