JPS58102364A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To obtain high airtightness through easy assembling, by making splitting section of a housing body and a cover parallel to a spindle, and separating shaft holes for supporting bearings of the spindle from the splitting section. CONSTITUTION:The screw of a disk holder is engaged threadedly with a screw hole 5 to hold a magnetic disk 1, which is inserted into a housing body 11. The length of a spindle 2 including bearing housings 3 is set shorter than the distance between both side walls 11a and 11b of the housing body 11 to insert the spindle 2 into the housing body. The splitting section 29 between a cover 21 and the housing body 11 is parallel to the spindle 2 during assembling operation and bearing holes 13 for supporting the spindle 2 are formed separately from the split surface 29, so the section 29 is one successive plane. Supporting members 14 for supporting the bearing housings 3 from outside of the shaft holes 13 are equipped to the housing body 11.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a magnetic tissue apparatus, and more particularly to a spindle support structure thereof and a housing structure for housing the magnetic tissue.

(2) Background of the technology In magnetic disk drives, with the recent increase in the amount of information available and the diversification of the system functions used, there has been an increase in the speed of head access operations and the increase in the density of information stored on magnetic disks. requested. In order to achieve higher speed and higher density of such magnetic disk devices,
The problem is that due to mechanical vibration during head movement, the quality of the head is lost due to highly accurate positioning control of the head, or the position of the rack is misaligned (due to thermal expansion differences due to uneven temperature distribution on the magnetic disk surface). etc. must be resolved.

(3) Differences between the conventional technology and conventional magnetic disk drives In conventional magnetic disk drives, the spindle that supports the magnetic disk is rotated only on one side of the magnetic disk in view of the airtightness of the device or the ease of assembly. There were 44 cantilever structures supported on the ground. However, in such a cantilevered machine, the vibration of the spindle causes a significant impact on the positioning control.
This causes a problem in that the inside of the magnetic disk device f'+ is thermally asymmetrical, and the temperature distribution around the upper and lower magnetic disks becomes uneven, causing track position deviation. To deal with this point, the spindle that supports the magnetic disk is attached to the 1U main body on both sides of the magnetic disk. :! It is a rule to use a 41-air disk made of 44# with both sides supported by a single-turn circle, but such a 44°
In the 4 structure, the nohunong that accommodates the tension disk must be made into a force structure, and the spindle 11・tIi
7ii+! In order to support the flower buds in a uniform manner, the divided structure becomes complicated and assembly workability is reduced, and of course the sealing surface becomes complicated, leading to problems such as deterioration of bud prickling.

(4) Purpose of the Invention Honmaruma is considered to be a drawback of the above-mentioned prior art, and is a simple Ill'J structure that can be easily assembled. The purpose is to provide a nice way to play.

(5) Structure of the Invention In order to achieve all of these objects, the present invention includes a magnetic disk mounted on a spindle, bearings provided at both ends of the spindle, and a mounting body and a cover for mounting the magnetic disk. In the abrasive disk device, a dividing surface between the housing body and the cover is formed in a plane parallel to the spindle, and bearings for the spindle are supported on opposing side walls of the housing body. A shaft hole for supporting the shaft is formed separately from the dividing surface, and the length of the spindle is shorter than the distance between both side walls of the housing body, and the length of the spindle is shorter than the distance between both side walls of the housing body, and
A supporting member for holding the housing is attached to the housing body.

(6) Embodiment of the invention FIG. 1 is an exploded perspective view of a magnetic disk device according to the invention.
FIG. 2 is a sectional view of the assembly. A plurality of magnetic disks 1 are mounted on a spindle 2 through a hub 1a. A housing 3 is provided at both ends of the spindle 2, and a bearing 4 is mounted inside the housing 3. A threaded hole 5 is formed in the housing 3 of this sum 1 receiver, into which a screw #8 of a disk holding member 6 shown in FIG. 3 is screwed during assembly. The disc retainer 6 is a support rod 7 with two rods 8 rotatably provided, and by operating the knob 9, the screw 10 of the persimmon 8 is inserted into the spindle 2's screw hole 5 of the housing 3. The magnetic disk 1 is insulated by screwing it into the housing body 11, and then inserted into the housing body 11.・Using body 11
When the spindle 2 is inserted into the inner cylinder of the housing 3, the bearing is inserted into the housing 3.
A guide %12 for guiding is given in the form Jl)li.

A shaft hole 13 for supporting the housing 3 is provided on the opposing side walls 11a, Ilb of the housing body 11. The bearing is the spindle 2 including the bearing 1 and the bearing 3.
The length is determined by the distance between both sides 111a and llb of the housing body 110, so that the comb spindle 2 can be inserted into the housing body. Reference numeral 21 is a cover, which together with the main body 11 forms a storage space for storing magnetic disks. A dividing surface 29 between the cover 21 and the housing 11 is formed in a plane parallel to the spindle 2 during assembly, and the packing 20 is arranged. A shaft hole 13 for supporting the spindle 2 is formed separately from this dividing surface 29. Therefore, the dividing surface 29 becomes one continuous plane.

The bearing is attached to the housing body 11 by inserting the screw 15' into the screw hole 18 of the housing body 11 through the entire outer hole 31 so that the support member 14 for supporting the housing 3 can be installed from the outside of the shaft hole 13 of the housing body 11. will be installed on the This support member 1
4, the screw 15 is passed through the entire inner hole 32, and the bearing is screwed into the screw hole 30 of the housing 3, so that the bearing supports the housing 3 from both outsides of the housing body 11. A rotor 16 constituting a spindle rotation drive motor is attached to the outside of one of the support members 14. This rotor 16 has a magnet 16m around its periphery, and is fixed to the system spindle 2 by screwing a screw 17 through a hole 19 into a screw hole 33 of the spindle 2. A coil 3 is attached to the outer circumference of the rotor 16.
A stator 35 having 4 is provided. 23 is the head,
22 is a carriage horn that supports the head, 24 is a carriage guide rail, 25 is a carriage horn drive section, and 26 is a /4' horn. A preload spring 28 is provided in the support portion 1'14 on the opposite side of the rotor 16 and presses the spindle 2 toward the rotor 16. The 4IllI bearing on the opposite side of the rotor 16 has a tight fit between the no-unong 3 and the bearing 4 inside it, and when the spindle 2 is inserted or withdrawn, this bearing moves the housing 3 toward the spindle axis and moves the spindle into the housing. It may be attached to and detached from the main body. A magnetic derivative seal 27 is provided between the spindle 2 and the housing 3 of the bearing.

(7) Effects of the invention In the magnetic disk drive b1 configured as described above, dl,
The dividing surface between the cover and the housing main body constituting the magnetic disk storage housing can be formed as one continuous plane without having a rough shape.
The joint surface can also be completely flat, so the cylinder airtightness can be achieved by a simple method such as packing 20 or 26 gin.
? r: It is possible to obtain a magnetic disk device with a double-sided structure, which is easy to assemble, and is excellent in terms of vibration control, vertical positioning control, etc.

[Brief explanation of drawings]

FIG. 1 is an exploded first view of a magnetic disk device according to J of the present invention, FIG. 2 is an H-plane view when it is assembled, and FIG. 3 is a perspective view of an assembly tool. 1...Magnetic disk, 2...Spindle, 3...
The bearing is a housing, 4... bearing, 11 middle housing body, 13... shaft hole, 14... support part phase, 20...
・Patsukin, 21...Cover. Patent Applicant: Fujitsu Limited Patent Application Agent Patent Attorneys: Akira Aoki, Patent Attorney Kazuyuki Nishidate (Patent Attorney) 1) Shino Patent Attorney: Akira Yamaguchi

Claims (1)

[Claims] 1. In a magnetic disk device in which a magnetic disk is mounted on a spindle, bearings are provided at both ends of the spindle, and the magnetic disk is housed in a housing consisting of a housing body and a cover, the dividing plane between the housing body and the cover is as described above. A shaft hole is formed in a plane parallel to the spindle, and a shaft hole for supporting the IIm+ receiver of the upper M+2 spindle is formed on the opposite side walls of the housing body at a distance M from the dividing surface, and the length of the spindle is The length is shorter than the distance between the two side walls of the main body of the Housong, and the support part that supports the spindle is removed from the outside of both the upper and lower shaft holes.
A magnetic disk device whose %g is attached to the Uzing body.