CN2563707Y - Damping magnetic disc driving structure - Google Patents

Abstract

Disclosed is a damping disk drive structure which has a vibration buffering structure, the vibration buffering structure can prevent other elements from contacting the crashed disks in the data regions of the disks when a disk driving device is in an operating state or a non operating state. The disk drive structure comprises a base seat, at least one disk mounted on the base seat, at least one data read-write head, at least one loading arm for supporting the magnetic head, at least one vibration buffering device disposed on the loading arm and a plurality of disk limit structures, wherein, the vibration buffering device has a symmetrical structure and forms a plane by facing the disk positively, each limit structure has a cylindrical body, and a plurality of extension bodies protruding from the bodies form a plurality of grooves.

Description

Damping disk drive structure

[technical field]

The utility model is about a kind of damping disk drive structure, refers in particular to a kind of when disk is worked or betransported, can be used for when storing the damping disk drive structure of absorbing vibration.

[technical background]

In computer system, information is carried out storage action continually on a hard disk or floppy disk, and these information stores and are read or write by a magnetic head on the annular magnetic track of disk.When storage or retrieve data, this magnetic head avoids magnetic head directly to contact with this disk magnetic surface with very little gap flight on the disk of high speed rotating.

The magnetic head of most disk drive structure is installed in the end near actuating arm, and this actuating arm has orthoscopic and rotary two types, and the orthoscopic actuating arm is this magnetic head of line style running fix radially in the magnetic disk surface upper edge; And rotary actuating arm drives this magnetic head and swings with certain radian on magnetic disk surface around the peripheral point of rotation rotation of disk.

The disk drive structure can further be classified the position of magnetic head when the off working state according to disk, a kind of is in dynamically magnetic head is read and write, when drives structure was in off working state, the actuating arm of installing magnetic head withdrawed from magnetic disk surface and is parked in an inclined-plane that leaves disk; Another kind is in dynamically magnetic head is read and write, and when drives structure was in off working state, the magnetic head of drives structure rested in the stop district of disk center no datat record.The swing and the vibrations of disk generation when work may damage disk, and disk is when being in off working state, as also having the vibrations generation at disk storage and transportation.So during the disk vibrations, the motor of disk drive structure is highly susceptible to suffering damage, when vibrations are enough big, even can cause the distortion or the sclerosis of bearing race, and then cause disk when rotated side direction instability and produce unsuitable friction force, bring the problem of magnetic head tracking.Vibrations also can produce very big acting force to disk in vertical direction, make disk or other element be subjected to displacement and make card to contact other element and destroy disk.The development trend of disk volume is more and more littler now, so the spacing of disk and actuating arm is also more and more littler, the probability of vibration limits disk is also increasing.

Traditional a kind of method that reduces vibrations is this disk drive use elastic lock and screw or the elastomeric isolation circles such as insulator with bolt, but these methods have tangible deficiency, at first snap close and insulator occupy certain space, and the space in the computer is very important.Secondly, these methods need a plurality of assemblies to assemble mutually, finish this operation and can improve extra cost.

[summary of the invention]

It is a kind of when disk is worked or betransported, can be used for when storing the damping disk drive structure of absorbing vibration that the purpose of this utility model is to provide.

The purpose of this utility model is achieved through the following technical solutions: a kind of damping disk drive of the utility model structure, have a vibrations buffer structure, this vibrations buffer structure can be in the data field that prevents other element contact disk under work or the off working state and damage disk at disk drive.This disk drive structure comprises that a pedestal, at least one rotation are installed in the loading arm of the disk of pedestal, at least one reading and writing data magnetic head, at least one support magnetic head, at least one vibrations snubber assembly and some disk position limiting structures that is installed in loading arm, this vibrations snubber assembly is a symmetrical shape and forms a plane over against disk, this position limiting structure has a cylinder-shaped body, gives prominence to some ennations and forms some grooves from this main body.

The advantage of the utility model damping disk drive structure is: the utility model damping disk drive structure adopts a vibrations snubber assembly and a plurality of magnetic disk support structure, reduced the damage that the contact in data in magnetic disk zone is caused disk because of elements such as magnetic heads, solved simultaneously when drive unit is in off working state, caused that because of transporting or storing vibrations are to damaging the problem of disk.The utility model under the prerequisite that does not increase or reduce drive part thickness, the anti-seismic performance of optimization disk drive.

[description of drawings]

In conjunction with example the utility model is further described with reference to the accompanying drawings.

Figure 1A is the simplification plane structure chart of the utility model damping disk drive structure.

Figure 1B is the planimetric map of the utility model damping disk drive structure.

Fig. 2 is the side view of the utility model damping disk drive structure along 1A-1A line cam device.

Fig. 3 is the cross-sectional view of the utility model damping disk drive structure along 1B-1B line holding structure.

Fig. 4 A is the actuating arm plane structure chart of the utility model damping disk drive structure.

Fig. 4 B is the loading arm planimetric map of the utility model damping disk drive structure.

Fig. 4 C is the side view of the utility model damping disk drive structure along the 4A-4A line.

Fig. 5 A is the cross-sectional view of the utility model damping disk drive structure along the 1C-1C line.

Fig. 5 B is the shock-damping structure amplification sectional view of the utility model damping disk drive structure.

Fig. 6 A, Fig. 6 B are the planimetric map and the side views of the utility model damping disk drive structure.

[embodiment]

See also Fig. 1, the utility model damping disk drive structure 100 mainly comprises a basal disc 101, a disk 102 and an actuating arm 103.This disk 102 is driven by a Spindle Motor 104 and rotates around this Spindle Motor 104.This actuating arm 103 rotates with pivot 108 and is driven by a voice coil motor 109, and these voice coil motor 109 collaborative magnet arrangements (figure does not show) are formed a voice coil loudspeaker voice coil structure and realized the location of magnetic head 105 in disk 102 surfaces to drive these actuating arm 103 rotary oscillations.One end of this actuating arm 103 is equipped with this magnetic head 105 and a support bar 106, and the end of this support bar rests on the cam gear 107.

See also Figure 1B, this damping disk drive structure 100 also further comprises some position limiting structure 121,122,123 and vibrations buffer structures 124 that are installed in basal disc 101, and this vibrations buffer structure 124 is installed on the cantilever of actuating arm 103.The concrete structure of this position limiting structure 121,122,123 and vibrations buffer structure 124 sees aftermentioned for details.

See also Fig. 2, it is cam gear 257,267 side views along the 1A-1A line of Fig. 1, and some screws are separately fixed at and are used for connecting cam gear 257,267 and basal disc 101 in the hole 254,264.Teat 251a, 251b on the cam gear 257 is installed in slotted eye 253a, the 253b that respective cams device 267 forms so that this two cam gear 257,267 is interlocked, simultaneously, teat 252a, 252b correspondence that this cam gear 267 forms are installed in the slotted eye of basal disc 101 formation, make under the prerequisite of considering support bar 106,206,216,226 and disk 102,202 positions relation, can accurately locate this two cam gear 257,267.

The structure of this cam gear 257,267 is identical with principle, and cam gear 257 has cam 107, and cam gear 267 has cam 207.At this is that example is illustrated with cam gear 257 only, sees also Fig. 4 A to Fig. 4 C.Support bar 106 extends beyond loading arm 406, and the adjacently situated surfaces of contact cam gear 107 is also mobile between a stop position and a flight position along this adjacently situated surfaces, the action that support bar 106 is finished contact and moved by the acting force of loading arm 406.

When damping disk drive structure 100 is in running order, magnetic head 105 is subjected to the aerodynamic force of disk rotation generation and flies on disk 102 surfaces, and when drives structure 100 power cut-off disks 102 stop the rotation, actuating arm 103 drives this magnetic head 105 and swings to disk 102 edges and make support bar 106 these cams 107 of contact, actuating arm 103 continues swing, support bar 106 raises along the profile of cam 107, thereby makes magnetic head 105 away from disk 102 surfaces.At last, actuating arm 103 rotates to a stop position, and support bar 106 is still in the cam 107 depression in the surface portions 253.

In when, under off working states such as transportation or storage vibrations taking place when, vibrations or displacement can take place in disk 102 on vertical with surperficial direction, this moment, damping disk drive structure 100 stop means 121,122,123 contact with other disk drive element with vibrations buffer structure 124 data field that prevents disk 102 surfaces that cooperatively interacts, and destroyed the data of noting down.

See also Fig. 3, it is the side view of position limiting structure along the 1B-1B line, and this position limiting structure 122 is identical with position limiting structure 121 shape and structures, 123 of position limiting structures because of and cam gear 107 be made into integration with the former two and have any different slightly.The Spindle Motor of disk is fixed on the basal disc 101, but on the Spindle Motor except that fixed disk 102, also can fix a plurality of disks, disk 202 as shown in Figure 3.During vibrations, disk 102,202 all may tilt, and 121,122,123 of this position limiting structures are used for preventing that disk 102 or 202 from contacting with basal disc 101, driver top cover, base plate 407, loading arm 406 etc.

This position limiting structure 121 is fixed on the basal disc 101 by screw 301, it comprises a cylinder-shaped body 121a and three outstanding ennation 121b, this three outstanding ennation 121b forms two groove 121c, the surface of each groove 121c is made by the material that a kind of module of elasticity is lower than the disc material module of elasticity relatively, the contact force between position limiting structure 121 and the disk 102,202 is reduced to minimum.

Distance between each ennation 121b and adjacent discs 102 or 202 is less than the minor increment between actuating arm and the disk, to guarantee that disk can not contact actuating arm when shaking.Each ennation 121b is retained on the periphery of disk 102 or 202 to guarantee that disk still can stable operation under being subjected to than the situation of big bang.Simultaneously, ennation 121b does not stretch in the data area.(as Fig. 4 A) disk 102 peripheries have a flight range 402, and ennation 121b does not then extend through this flight range.

See also Fig. 4 A, Fig. 4 B, Fig. 4 C, actuating arm 103 comprises a drive end 405 and loading arm 406, thereby loading arm 406 is in the same place by being clipped in to be fixed between drive end 405 and the base plate 407 on the drive end 405 and by forging and pressing this drive end 405, loading arm 406 to be pressed solidly with base plate 407.This loading arm 406 and be positioned at its terminal flexible portion 408 monolithic moldings, this flexible portion 408 is to form by the part material of removing loading arm 406.Consult Fig. 4 B, from the specific zone 410 of loading arm 406 downside etchings one to obtain the required elasticity of loading arm 406.105 of this magnetic heads are installed on this flexible portion 408, and a lead 411 is electrically connected this magnetic head 105 and drives structure 100.Shown in Fig. 4 A, load bar 106 is fixed on this loading arm 406, and this actuating arm 103 extends through the edge 403 of disk 102 and covers the top of part disk 102.402 is an arc flight range, and after outside the flight range 402, this magnetic head then cooperates cams to support by support bar 106.Camber line 401 scopes then are data storage areas with interior part.

One breach 406a is opened on this loading arm 406, and this breach 406a is used for forming a gap at Spindle Motor and drive end.Gap minimum between actuating arm 103 and the disk 102 is actuating arm 103 and disk 102 the most exposed to contact places just at the breach 406a place of this loading arm 406.So the place that this vibrations snubber assembly 124 is fixed near breach 406a prevents the contact of actuating arm to disk.This vibrations snubber assembly 124 is fixed on the downside of loading arm 406, and an edge 124a of this vibrations snubber assembly 124 is in the outside of disk 102 flight range 402.Thus, beyond shaking snubber assembly 124 and contacting of disk 102 only occurring in disk 102 flight range, simultaneously, pollutant can not pass to disk 102 from vibrations snubber assembly 124, and the contact impact of vibrations snubber assembly 124 and disk 102 can not influence the state of flight of magnetic head 105 and the data integrity of disk yet.

This vibrations snubber assembly 124 can be fitted in loading arm 406 by the polyacrylic acid viscose glue, also forms a breach 124b on it, this breach 124b be used for making vibrations snubber assembly 124 can be not overlapping with the boring 412 and 413 that is formed on the loading arm 406.Another edge 124c of this vibrations snubber assembly 14 as far as possible near this edge 124a so that the volume of whole snubber assembly minimize.And, this vibrations snubber assembly 124 preferably and the longitudinal axis 404 symmetries of this loading arm 406, with ease of assembly.Each vibrations snubber assembly 124 has a suitable thickness can not contact card because of vibrations to guarantee corresponding cantilever.

Fig. 5 A is the cross-sectional view of this drive unit along the 1C-1C line.This head gimbal structure 501,503,513,523 is in the position in disk 102,202 bosoms, rather than near or away from the edge of this disk 102 and 202.Consult Fig. 5 B, head gimbal structure 501,503 is respectively towards the upper and lower surface of disk 102, and 513,523 on head gimbal structure is respectively towards the upper and lower surface of disk 202.An one vibrations snubber assembly and a magnetic head are fixed on a side of each each loading arm of head gimbal structure.The contact plane of vibrations snubber assembly 124,504,514,524, plane 124d as 124 is made by a kind of material lower with respect to the disk module of elasticity, so that vibrations snubber assembly 124,504,514,524 in contact disk 102,202 with thereon docile, reduce to damage.

Each contact plane such as the 124d of vibrations snubber assembly can be made by plastic material, also can be made by polyester material.This vibrations snubber assembly is preferably whole to be made by a kind of material, so that should shake the snubber assembly one-shot forming, also is convenient to sticking being contained on the loading arm.

See also Fig. 6 A, Fig. 6 B, Fig. 6 A is the concrete size of embodiment in the utility model damping disk drive structure one, and wherein 601 is 2.45 centimetres, 602 is 0.55 centimetre, and 603 radius is 0.50 centimetre, and 604 radius is all 0.25 centimetre, 605 is 1.51 centimetres, and 606 angle is 9.0 degree.The thickness 607 of vibrations snubber assembly is 0.250 centimetre among Fig. 6 B, and tolerance is 0.025 centimetre.

Claims (7)

1. damping disk drive structure, comprise a pedestal, at least one rotation is installed in the loading arm of the disk of pedestal, at least one reading and writing data magnetic head and at least one this magnetic head of support, it is characterized in that: this damping disk drive structure also comprises at least one vibrations snubber assembly that is installed in loading arm, this vibrations snubber assembly forms a plane over against disk, when loading arm is in stop position, this vibrations snubber assembly can prevent data in magnetic disk zone and loading arm because shake perpendicular to contacting on the direction of magnetic disk surface.

2. damping disk drive structure as claimed in claim 1 is characterized in that: this plane that can contact the vibrations snubber assembly of disk is to be made by a kind of material lower with respect to the disk module of elasticity.

3. damping disk drive structure as claimed in claim 2, it is characterized in that: the plane of this vibrations snubber assembly can be made of plastics.

4. damping disk drive structure as claimed in claim 2, it is characterized in that: the plane of this vibrations snubber assembly can be made by polyester material.

5. damping disk drive structure as claimed in claim 1 is characterized in that: this vibrations snubber assembly is fixed on the loading arm, only contacts the disk zone outside the flight range.

6. damping disk drive structure as claimed in claim 1 is characterized in that: this vibrations snubber assembly is fixed on the place of the minimum clearance of the close disk of loading arm when magnetic head is in stop position.

7. damping disk drive structure as claimed in claim 1 is characterized in that: this vibrations snubber assembly forms the shape of a symmetry with reference to the longitudinal axis of loading arm.

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