CN100435213C - System and method against damage by improving hard-disk driving-arm to prevent vibration - Google Patents

Abstract

A method of carrying out antivibration by improving hard disc driving arm sets guide block at angle scope out of driving arm movement to avoid over bending and vibration during operation and /or increases diameter of hard disc driving screw to minimize arm vibration.

Description

Come the system and method for the damage prevention of vibrationproof by improving hard disk actuation arm

The application is that application number is dividing an application of 028290933 patented claim.

Background information

The present invention relates to magnetic hard drive.More specifically, the present invention relates to come the system of vibrationproof with damage prevention by improving hard disk actuation arm.

The computer data memory storage is of a great variety.Wherein a kind of is hard disk drive (HDD).HDD uses one or more disk storage data, and uses one or more magnetic heads to write data from disk read data or toward disk.Along with the development of hard disk and other correlation computer technology, hard disk and relative computer system thereof become enough little for the ease of carrying.Along with the raising of this system's portability, the thing followed then is more large impact and vibration risk, causes read/write ability to weaken or damages hard disk.

If hard disk suffers violent vibration or physical shock, the actuating arm of positioning head may collide disk on disk, may damage magnetic head or/and disk like this.In addition, may cause damage to parts such as be connected with physics and electricity such as support arm.In addition, if use the meticulous adjustment head position of microdrive system, may cause damage to microdrive itself.In the prior art, use diverse ways to prevent this damage.

Fig. 1 shows and is used to prevent because a kind of typical method of the damage that impact or vibration hard disk cause.Fixed ramp (ramp) 102 is positioned at the outer near disk 104.When magnetic head 106 moves to outside the disk rim, it will ride on the slope 102, be ' parked ' on a safety, the restricted position.One of problem of this design is that it is only effective when hard disk is not worked.This design can't prevent that magnetic head 106 from reading or writing toward disk 104 damage in driven when operation of data from disk 104.In addition, slope 102 can only be used for " oblique arm orientation (diagonal arm orientation) " hard disk 108 as shown in Figure 1a.Because space constraint, slope 112 can't be used for " upright arm orientation (perpendiculararm the orientation) " hard disk 110 shown in Fig. 1 b.

Fig. 2 provides another kind of and has prevented to impact or the diagram of vibration-associated damage method, and this method relates to uses fixing " comb ".Shown in Fig. 2 a (vertical view) and 2b (side view), comb 206 is fixed on the position of hard-disk cartridge 212, makes each disk 202 and each arm 204 be inserted between " broach " 208 of comb 206 (also can with reference to figure 3) in the whole moving range of arm 204.

Fig. 3 provides another diagram of the arm of stability " comb " method.Fig. 3 a and 3b show the arm 304 at the opposition two ends that are positioned at its moving range 314.A shortcoming of " comb " method is that a big chunk of arm 304 (load beam (load beam) 316) is not subjected to the restriction of comb 306.This part 316 of arm is vibrated or during physical shock, can be as " spring " freely near or away from disk 302.Another shortcoming is, the base portion 318 of 306 sway braces of comb, and do not support the suspension (load beam 316) (will be described below) of magnetic head 320.In addition, the pillar of comb 306 is relatively large to the distance of magnetic head 320, makes magnetic head have very big displacement under impacting or vibrating.Therefore, expect to have a system that can improve hard disk actuation arm vibrationproof and other advantage.

The accompanying drawing summary

Fig. 1 shows and is used to prevent by hard disk being impacted or " comb " method of the damage that vibration causes.

Fig. 2 provides another kind of and has prevented to impact or the diagram of the method for vibration-associated damage, and this method relates to uses fixing " comb ".

Fig. 3 provides another diagram of the arm of stability " comb " method.

Fig. 4 shows according to principle of the present invention, utilizes the single magnetic head hard disk of actuating arm guide block (guide block).

Fig. 5 shows according to principle of the present invention increases the diameter that drives screw.

Detailed Description Of The Invention

In order to improve the vibrationproof of hard disk, in one embodiment of the invention, provide guide block to support from behind or restriction actuating arm (for example, the opposite side of magnetic disk surface).Fig. 4 shows according to principle of the present invention, utilizes the single magnetic head hard disk of actuating arm guide block.Fig. 4 a provides the skeleton view of the hard disk with guide block, and Fig. 4 b provides the side view of actuating arm and guide block in accordance with the principles of the present invention.In one embodiment, the guide block 402 of " arc " type is incorporated into the hard-disk cartridge 404 of actuating arm 406 back, with prevent to impact or during vibration arm 406 deflections leave disk 408.Therefore arm 406 can not crooked (being downward in this drawing) leave disk 408, damages arm (overbend) and/or disk to prevent (impact backswing).In one embodiment, with guide block 402 moulding, make its path in the angular range that arm 406 moves along head gimbals (load beam) 410.

In one embodiment, guide block 402 is by making such as stainless metal; In another embodiment, guide block 402 is by making such as the polymkeric substance of tygon, polyester, polyamide; In another embodiment, guide block 402 is a pottery.

In one embodiment, guide block 402 has two different surfaces (step).The major part of first step 412 sway braces 406, second step 418 support load beam part (suspension) 410.This design allows independent support load beam 410, with respect to the major part load beam 410 hinge connection a little of arm 406.In one embodiment, the guide block 402 of close disk 408 cores serves as load/discharge point 420, when hard disk is not worked arm 406 is limited.

In one embodiment of the invention, use the enough big driving screw of a stature (nut) to reduce the arm vibration.Fig. 5 shows according to principle of the present invention increases the diameter that drives screw 502.The typically having a diameter from of nut 5.3 millimeters (mm) in the prior art.In one embodiment, the screw with larger diameter nut 502 applies axle pressure to arm in a wider context, thereby strengthens and stablized arm 504 in should the zone.In addition, it can be to exerting pressure from the farther position of axle, and the bending (reversing) that causes for the opposing vibration/shock provides bigger moment.In one embodiment, 3.0 inches hard disks use nut diameters are the driving screw 502 of 8.4 millimeters (mm).In one embodiment, 3.5 inches hard disks use the driving screw 502 of nut diameter as 8.4mm.Preferably, in 3.5 inches hard disks, the nut diameter range of screw is that 8.4mm is between the 9.4mm, to obtain vibration proof of the present invention/impact.In another embodiment, use the screw 502 of 8.4mm nut diameter usually,, and still satisfy space constraint such as 3.5 inches hard disks of 3.5 inches hard disks of Maxtor Nike etc. with the strong point of performance major diameter nut 502.This is 44.9% a nut diameter 508 of arm (at the mid point of screw and perpendicular to the length of arm 504) width 510 for the hard disk such as 3.5 inches platforms of Maxtor Nike provides its diameter, and the arm of this hard disk wide 510 is 18.7mm.Preferably, in 3.5 inches hard disks, the scope of the ratio that nut diameter and arm are wide is between 28.3% to 50.3%, to realize anti-vibration of the present invention/impact.

Although in this special instruction with described several embodiments, should be understood that under the situation that does not deviate from spirit of the present invention and specified scope, modifications and variations of the present invention are included in the scope of above-mentioned instruction and appended claims.

Claims (6)

1. system that improves the magnetic memory apparatus vibrationproof comprises:

Drive screw, be used for fixing arm member, wherein

Described driving screw comprises screw portion and has a kind of nut part of diameter;

Described nut part fixes described arm member by applied pressure vertically; And

Described diameter is greater than 28.3% of described arm member width, and the width of described arm member is at the mid point of screw and perpendicular to the width of the length direction of arm.

2. according to the system of claim 1, wherein drive screw described arm member is fixed on the magnetic memory apparatus box.

3. system that improves the magnetic memory apparatus vibrationproof comprises:

Drive screw, described driving screw comprises screw portion and has a kind of nut part of diameter; And

Described driving screw is pressed in nut member on the arm member, wherein by applied pressure vertically

Described diameter is enough big, and with the minimum vibration with described arm member, described diameter is greater than 5.3 millimeters.

4. according to the system of claim 3, wherein drive screw described arm member is fixed on the magnetic memory apparatus box.

5. system that improves the magnetic memory apparatus vibrationproof comprises:

Drive screw, be used for fixing arm member, wherein

Described driving screw comprises screw portion and has a kind of nut part of diameter;

Described nut part fixes described arm member by applied pressure vertically; And

Described diameter is at least 8.4 millimeters.

6. system that improves the magnetic memory apparatus vibrationproof comprises:

Drive screw, be used for fixing arm member, wherein

Described driving screw comprises screw portion and has a kind of nut part of diameter;

Described nut part fixes described arm member by applied pressure vertically; And

Described diameter is greater than 5.3 millimeters.

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