Reduced reel motor disturbances in a tape drive system

Patent metadata

Field	Value
Publication number	US-10374475-B2
Application number	US-201615215501-A
Country	US
Kind code	B2
Filing date	Jul 20, 2016
Priority date	Apr 11, 2014
Publication date	Aug 6, 2019
Grant date	Aug 6, 2019

Abstract

An apparatus according to one embodiment includes a motor having: a rotor, a magnet, and a damping layer positioned between the rotor and the magnet. The damping layer is constructed of a material characterized by converting kinetic energy into heat.

First claim

What is claimed is:

1. An apparatus, comprising:
a motor having:
a rotor;
a magnet; and
a damping layer positioned between the rotor and the magnet;
wherein the damping layer is constructed of a material characterized by converting kinetic energy into heat.

2. The apparatus of claim 1 , further comprising a pole piece.

3. The apparatus of claim 2 , wherein the magnet, the pole piece, and the damping layer are concentric rings.

4. The apparatus of claim 2 , wherein the damping layer is positioned between the first end of the magnet and the rotor.

5. The apparatus of claim 1 , wherein the rotor has a cup shape, having a sidewall extending away from a flange and along an outer circumference of the magnet.

6. The apparatus of claim 2 , wherein the pole piece is detachably coupled to the rotor.

7. The apparatus of claim 1 , wherein the damping layer is detachably coupled to the rotor.

8. The apparatus of claim 5 , further comprising a pole piece between the magnet and the sidewall of the rotor, wherein the damping layer is positioned between the pole piece and the sidewall of the rotor.

9. The apparatus of claim 1 , further comprising:
a magnetic head;
a guide for guiding a magnetic medium over a magnetic head; and
a controller electrically coupled to the magnetic head.

10. A tape drive system, comprising:
a magnetic head; and
a drive mechanism for passing a magnetic medium over the magnetic head, the drive mechanism including a motor having:
a rotor;
a magnet; and
a separate damping layer positioned between the rotor and the magnet;
wherein the damping layer is constructed of a material characterized by converting kinetic energy into heat.

11. The tape drive system of claim 10 , further comprising a pole piece.

12. The tape drive system of claim 11 , wherein the pole piece is detachably coupled to the rotor.

13. The tape drive system of claim 11 , wherein the damping layer is positioned between the pole piece and the rotor.

14. The tape drive system of claim 10 , wherein the rotor has a cup shape, having a sidewall extending away from a flange and along an outer circumference of the magnet.

15. The tape drive system of claim 14 , wherein the sidewall acts as a pole piece.

16. The tape drive system of claim 15 , wherein the damping layer is positioned between the magnet and the sidewall of the rotor, wherein the damping layer is detachably coupled to the rotor.

17. The tape drive system of claim 10 , further comprising:
a controller electrically coupled to the magnetic head.

Assignees

• IBM

Inventors

• Harper David H F
• Rothuizen Hugo E

Classifications

• H02K1/2733

  Annular magnets · CPC title

• G11B15/26

  Driving record carriers by members acting directly or indirectly thereon {(G11B15/44 takes precedence; driving features inside container, see G11B23/04 and subgroups)} · CPC title

• H02K3/20

  for auxiliary purposes, e.g. damping or commutating · CPC title

• H02K1/30 Primary

  using intermediate parts, e.g. spiders · CPC title

• G11B15/18

  Driving; Starting; Stopping; Arrangements for control or regulation thereof {(G11B15/56 takes precedence)} · CPC title