Disk device
AssigneesKabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
InventorNaoto Akatsuka
Life of this patent
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Abstract
According to one embodiment, a disk device includes a first actuator assembly and a second actuator assembly which are respectively supported by a first bearing unit and a second bearing unit to be rotatable about a support shaft. The first bearing unit includes a first sleeve and a ball bearing. The second bearing unit includes a second sleeve and a ball bearing. The first sleeve includes a first end surface opposed to the second sleeve and an annular first step projecting from the first end surface, and the second sleeve includes a second end surface opposed to the first step with a gap and an annular second step projecting from the second end surface. The second step is opposed to the first step and the first end surface with a gap.
Claims10
A disk device comprising:
- a recording medium;
- a first actuator assembly including a first actuator block rotatably supported on a support shaft via a first bearing unit, and a first suspension assembly extending from the first actuator block and including a first magnetic head;
- and
- a second actuator assembly including a second actuator block rotatably supported on the support shaft via a second bearing unit, and a second suspension assembly extending from the second actuator block and including a second magnetic head, wherein
- the first bearing unit comprises a first sleeve fixed to the first actuator block and located around the support shaft, and a first ball bearing disposed between the support shaft and the first sleeve,
- the second bearing unit comprises a second sleeve fixed to the second actuator block and located around the support shaft, and a second ball bearing disposed between the support shaft and the second sleeve,
- the first sleeve includes a first end surface opposed to the second sleeve,
- the second sleeve includes a second end surface opposed to the first end surface with a gap therebetween, and
- at least one of the first end surface and the second end surface includes an annular rib.
A disk device comprising:
- a recording medium;
- a first actuator assembly including a first actuator block rotatably supported on a support shaft via a first bearing unit, and a first suspension assembly extending from the first actuator block and including a first magnetic head;
- and
- a second actuator assembly including a second actuator block rotatably supported on the support shaft via a second bearing unit, and a second suspension assembly extending from the second actuator block and including a second magnetic head, wherein
- the first bearing unit comprises a first sleeve fixed to the first actuator block and located around the support shaft, and a first ball bearing disposed between the support shaft and the first sleeve,
- the second bearing unit comprises a second sleeve fixed to the second actuator block and located around the support shaft, and a second ball bearing disposed between the support shaft and the second sleeve,
- the first sleeve includes a first end surface opposed to the second sleeve,
- the second sleeve includes a second end surface opposed to the first end surface with a gap therebetween, and
- the gap is formed in a labyrinth-shape.
A disk device comprising:
- a recording medium;
- a first actuator assembly including a first actuator block rotatably supported on a support shaft via a first bearing unit, and a first suspension assembly extending from the first actuator block and including a first magnetic head;
- and
- a second actuator assembly including a second actuator block rotatably supported on the support shaft via a second bearing unit, and a second suspension assembly extending from the second actuator block and including a second magnetic head, wherein
- the first bearing unit comprises a first sleeve fixed to the first actuator block and located around the support shaft, and a first ball bearing disposed between the support shaft and the first sleeve,
- the second bearing unit comprises a second sleeve fixed to the second actuator block and located around the support shaft, and a second ball bearing disposed between the support shaft and the second sleeve,
- the first sleeve includes a first end surface opposed to the second sleeve,
- the second sleeve includes a second end surface opposed to the first end surface with a gap therebetween, and
- at least a part of the second sleeve overlaps at least a part of the first sleeve in a radial direction of the first sleeve.
Dependencies are inferred from the claim text.