MAGNETIC DISC DRIVE
A magnetic disc drive includes a head that is configured to record information in a recording medium or reproduce the information from the recording medium, a housing that houses the recording medium and the head, and a vibration damping mechanism that reduces a vibration of the housing, and includes a weight attached to the housing and a deformation reducer that reduces a deformation of the housing caused by the weight.
1 . A magnetic disc drive comprising:
a head that is configured to record information in a recording medium or reproduce the information from the recording medium;
a housing that houses the recording medium and the head; and
a vibration damping mechanism that reduces a vibration of the housing, and includes a weight attached to said housing and a deformation reducer that reduces a deformation of said housing caused by the weight.
2 . A magnetic disc drive according to claim 1 , wherein the deformation reducer is a spacer part that is located between the weight and the housing, and reduces an area in which the weight thermally contacts said housing.
3 . A magnetic disc drive according to claim 2 , wherein the spacer part has an air gap or thermal insulator provided between said housing and the weight.
4 . A magnetic disc drive according to claim 1 , wherein the deformation reducer is a heat radiator that enhances a heat radiation of the weight.
5 . A magnetic disc drive according to claim 4 , wherein the heat radiator is a convexoconcave part formed on a surface of the weight.
6 . A magnetic disc drive according to claim 1 , wherein the deformation reducer is elastic adhesive layer provided between said housing and the weight.
7 . A magnetic disc drive according to claim 1 , wherein the deformation reducer is a cut part formed in the weight.
8 . A magnetic disc drive according to claim 1 , wherein the deformation reducer is a fixture member that fixes the weight onto the housing at one spot.
9 . A magnetic disc drive comprising:
a head that is configured to record information in a recording medium or reproduce the information from the recording medium;
a housing that houses the recording medium and the head; and
a vibration damping mechanism that reduces a vibration of the housing, and includes a weight attached to said housing, the weight being made of at least one of resin, a sinter material, and a metal injection molding material containing metal additive.
10 . A magnetic disc drive comprising:
a head that is configured to record information in a recording medium or reproduce the information from the recording medium;
a housing that houses the recording medium and the head; and
a vibration damping mechanism that reduces a vibration of the housing, and includes a weight attached to said housing, the weight being made through die casting or lost-wax casting process that casts a high specific-gravity molten metal.