JPS6276070A - Magnetic disc device - Google Patents

Abstract

PURPOSE:To prevent the deterioration of the frequency characteristic from being deterioration by mounting a buffer member between the lower face of a shuraud and a carriage assembly so as to absorb an external disturbance even when the disturbance occurs. CONSTITUTION:The buffer member 7 to improve the frequency characteristic is provided between the shuraud 2 and the carriage assembly 6 when an external disturbance occurs. The buffer member 17 is made of an elastic body such as rubber or foamed plastic and when an external disturbance occurs to the shuraud 2, the shock and vibration are absorbed and not delivered to the carriage assembly 6 to improve the frequency characteristic. The buffer member 7 is an O ring in this example and fitted to the upper end of the rotary shaft 68 and provided between the carriage assembly 6 and the lower face of the shuraud 2. The position shift of the buffer member 7 is not caused by fitting the member 7 to the rotary shaft 68 and stable vibration is absorbed.

Description

[Detailed description of the invention] [Technical field of invention] The present invention relates to a magnetic disk device.

(Technical direction of the invention (1 and its problems) In order to perform highly accurate positioning of the magnetic head in a magnetic disk drive, the head access structure is moved every moment in a closed loop based on the data written on the disk plate. System 6 [1
1, there is. However, in this state, when the lifting platform is subjected to disturbances such as vibrations and voltage fluctuations, the operation of the head access mechanism becomes unstable and position control becomes impossible with conventional equipment.
It causes a dragon and makes the reading frequency 14 worse.

[Object of the Invention] The present invention was made in consideration of the above circumstances, and it is an object of the present invention to provide a magnetic disk device that absorbs vibrations even when external disturbances occur and does not cause deterioration of frequency characteristics. do.

[Summary of the invention]

In order to achieve the above objective [], the magnetic disk drive 21 according to the present invention provides a buffer member between the carriage assembly that performs μm reading on the magnetic medium and the shroud that covers the whole. It is characterized by absorbing vibrations caused by external disturbances and improving frequency characteristics.

[Embodiments of the invention]

An embodiment of magnetic disk loading according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a partially cutaway side view of an embodiment of the present invention, FIG. 2 is a partially cutaway side view thereof, and FIG. 3 is a perspective view showing the appearance of the entire device. A broken ridge assembly 6 is provided on the left side of the base 1, and a plurality of magnetic disks 4 are provided on the right side, and these are covered by a shroud 2. Further, a front panel 3 made of a &51 decorative panel is provided at the left end. Both magnetic disks 4 are Dairef 1-
It is attached concentrically to the spindle of the drive motor 5, and rotates at 0 speed when the spindle rotates. Further, in the carriage assembly 6, a magnetic head 66 attached to the tip of an arm 65 is positioned on each magnetic head 4 to read fi'i'lu on the magnetic disk and read information onto the magnetic disk. . For this reason, the carriage assembly 6 includes an arm 65 that supports the head 66 at its tip, a bearing section 64 that supports the base side of the arm 65 and rotatably supports the rotating shaft 68 by a bearing 69, and a rotating shaft. The connecting plates 63 supporting the connecting plates 68 and 68 are connected in this order. Then, a coil 61 is formed in the bearing portion 64, and this coil 61
is located inside a magnet 62 made of a permanent magnet and having an rEJ-shaped cross section. By passing a current through the coil in the magnetic path of the magnet, the bearing portion 64 rotates around the rotating shaft 68, thereby causing the arm 65 to rotate. It moves in the radial direction of the magnetic disk 4 to move the head 66 to a predetermined position on the magnetic medium 4. Note that the rotating shaft 68 is connected to the base 67.
It is placed above.

In such a magnetic disk drive, a buffer member 7 is provided between the shroud 2 and the carriage assembly 6 to improve frequency characteristics when disturbance occurs. This buffer member 7 is made of an elastic material such as rubber or foamed plastic, and is designed to absorb vibrations and shocks when disturbance occurs to the shroud 2, prevent them from being transmitted to the carriage assembly 6, and improve frequency characteristics. act. In this embodiment, the buffer member 7 is an O-ring, which is fitted onto the upper end of the rotating shaft 68 and sunk between the gear ridge assembly 6 and the lower surface of the shroud 2. By fitting it onto the rotating shaft 68, there is no misalignment of the loose YJ material 7.
It can stably absorb vibrations.

Such a buffer member 7 may be attached to the lower surface of the shroud or the upper surface of the connecting plate of the carriage assembly, and may take various shapes such as a rectangular plate.

〔Effect of the invention〕

As described above, according to the present invention, the buffer member 7 for absorbing vibration is installed between the lower surface of the shroud and the carriage assembly, so that even if a disturbance occurs, the oscillation will not affect the movement of the arm. 171, the frequency characteristics become better.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view of a magnetic disk device according to the present invention, FIG. 2 is a partially cutaway side view thereof, and FIG. 3 is a perspective view of the external appearance. 2... Shroud, 4... Magnetic medium, 6... Carriage assembly 1.65... Arm, 66... Head, 7... Buffer member. Applicant's agent vi Fuji-U [Figure 3

Claims (1)

[Claims] 1. An arm that moves in the radial direction of a rotating magnetic medium;
In a magnetic disk drive comprising a carriage assembly having a head attached to the tip of the arm for reading and writing data recorded on the magnetic medium, there is a gap between the lower surface of a shroud that covers the entire device and the carriage assembly. A magnetic disk device characterized in that a buffer member for absorbing vibration is provided in the magnetic disk device. 2. The magnetic disk device according to claim 1, wherein the buffer member is an O-ring fitted to the rotating shaft of the arm.