초록 ▼

Embodiments in accordance with the present invention improve bonding reliability in a feedthrough sealing portion. According to one embodiment of the present invention, an opening of a through hole is provided on the bottom of the base of the magnetic disk device and a feedthrough mounting plane whi

Embodiments in accordance with the present invention improve bonding reliability in a feedthrough sealing portion. According to one embodiment of the present invention, an opening of a through hole is provided on the bottom of the base of the magnetic disk device and a feedthrough mounting plane which is one of the steps formed toward the outside of the device is provided around the opening. The feedthrough includes a flange and pins which are fixed to the flange by a glass material and pass an electric signal. The flange is larger in outer shape than the opening of the base. The periphery of the flange of the feedthrough is mounted on the feedthrough mounting plane of the base from the outside and bonded thereto by solder.

대표청구항 ▼

What is claimed is: 1. A magnetic disk device comprising:a disk;a spindle motor which rotationally drives the disk;a head which records and reproduces information on the disk;an actuator assembly which moves the head over the disk in the direction of the radius thereof;a base provided with the head,

What is claimed is: 1. A magnetic disk device comprising:a disk;a spindle motor which rotationally drives the disk;a head which records and reproduces information on the disk;an actuator assembly which moves the head over the disk in the direction of the radius thereof;a base provided with the head, spindle motor and actuator assembly and an FPC assembly which performs an electrical connection;an opening in the base;a cover;a weld configured to hermetically seal the cover to the base;a space between the cover and the base configured to enclose the magnetic disk device;a low-density gas configured to fill the space between the cover and the base;a feedthrough comprising,pins to electrically connected to the FPC assembly;a flange of the feedthrough configured to be larger in outer shape than the opening of the base and configured to be connected to the outside of the opening of the base; anda sealing material configured to hermetically seal the pins to the flange, wherein the sealing material is selected from a group of sealing material consisting of: glass or ceramic; andsolder configured to connect the flange to the feedthrough to the outside of the opening of the base.