CN100559474C - Magnetic head fold piece combination and manufacture method thereof with add-in card - Google Patents
Magnetic head fold piece combination and manufacture method thereof with add-in card Download PDFInfo
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- CN100559474C CN100559474C CNB2005100756185A CN200510075618A CN100559474C CN 100559474 C CN100559474 C CN 100559474C CN B2005100756185 A CNB2005100756185 A CN B2005100756185A CN 200510075618 A CN200510075618 A CN 200510075618A CN 100559474 C CN100559474 C CN 100559474C
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- magnetic head
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- add
- cantilever part
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Abstract
The invention provides a kind of magnetic head fold piece combination, it comprises magnetic head, one-body molded and be the cantilever part of a slice structure with a magnetic head holding board, and is installed in the add-in card on the cantilever part.Described add-in card has the small embossment that supports the magnetic head holding board in order to part.A kind of method of making magnetic head fold piece combination of the present invention, it may further comprise the steps: (1) forms has the cantilever part of magnetic head holding board, the add-in card with small embossment and magnetic head; (2) magnetic head is installed on the cantilever part; (3) add-in card is connected on the cantilever part.This magnetic head fold piece combination is simple in structure, assembling is efficient and convenient, performance good.
Description
Technical field
(head gimbal assemblies HGAs) and disc drive unit, relates in particular to a kind of magnetic head fold piece combination and manufacture method thereof with add-in card to the present invention relates to a kind of magnetic head fold piece combination.
Background technology
Disc driver is a kind of information-storing device that uses the magnetic medium storage data.Existing typical disc drive unit comprises a disk and a magnetic head cantilever combination (HSA).Wherein, disk is contained in one in order on the Spindle Motor that drives the disk rotation.Flying magnetic head in the magnetic head cantilever combination and then reads or writes data from disk on magnetic disk surface.
Existing magnetic head cantilever combination comprises a rigidity actuating arm, the magnetic head (cantilever part with magnetic head is called as " magnetic head fold piece combination " (HGA)) that at least one is fixed in the flexible cantilever spare of actuating arm one end and is contained in each cantilever part top ends.Magnetic head cantilever combination so structure makes when the power towards disk puts on the magnetic head, can be in the connecting portion formation leaf spring structure of cantilever part itself or itself and actuating arm.
Please refer to Fig. 1-2, existing cantilever part 14 comprises independent load beam 33 and independent flexible element 32, this load beam 33 and flexible element 32 overlap together and in a conventional manner (as laser bonding or bonding) interconnect.This cantilever part 14 further comprises the articulated part (not sign) that is connected with actuating arm 34.Load beam 33 1 ends extend promote sheet 331 with the disc driver casing on slope (ramp, figure does not show) match.Be formed with small embossment 329 on this load beam 33 to be supported in the flexible element 32 at center, magnetic head installation region, can keep load pressure always to be applied on the central area of magnetic head 203 by the small embossment 329 on this load beam 33, thereby keep the static state and the dynamic posture of magnetic head 203, thus guarantee magnetic head 203 successfully from the disk reading of data or on disk write data.
Yet the assembling process of magnetic head fold piece combination (HGA) with above-mentioned traditional structure is quite complicated, because: at first,,, between load beam 33 and flexible element 32, can form the gap because there is small embossment 329 to support this flexible element 32 with reference to figure 2.When being installed to magnetic head 203 on the flexible element 32, because load beam 33 is by being formed with the gap between worktable support and flexible element 32 and the worktable, therefore magnetic head 203 is placed on the flexible element 32, be connected to magnetic head 203 on the flexible element 32 and between form be electrically connected (GBB or SBB) all very inconvenient.In addition, form this independent load beam 33 and flexible element 32 expensive time and moneys.And, thereby because the traditional magnetic head fold piece combination among Fig. 1 must be assembled together certain region overlapping of load beam 33 and flexible element 32 with them, accordingly, the lap of this flexible element 32 and load beam 33 can increase the whole height and the weight of magnetic head fold piece combination (magnetic head cantilever combination, disc driver).In addition, traditional magnetic head fold piece combination has very poor anti-seismic performance is arranged when huge inertia causes its work.When a foreign impacts put on described magnetic head fold piece combination, this moment, magnetic head may judder under the effect of this impact and collide magnetic disk surface, thus damage magnetic disk surface and/or magnetic head.
Therefore, providing a kind of magnetic head fold piece combination and manufacture method thereof with add-in card is necessity to overcome above-mentioned shortcoming in fact.
Summary of the invention
The object of the present invention is to provide a kind of manufacture process more simply to reach the magnetic head fold piece combination that has add-in card reliably.
Another object of the present invention is to provide a kind of above-mentioned magnetic head suspension arm combination and magnetic disk drive unit that comprises with magnetic head fold piece combination of add-in card.
Another purpose of the present invention is to provide a kind of manufacture method with magnetic head fold piece combination of add-in card
For achieving the above object, a kind of magnetic head fold piece combination of the present invention comprises: magnetic head; Cantilever part, described cantilever part comprises the magnetic head holding board, and described magnetic head holding board and described cantilever part are one-body molded, and described cantilever part is a slice structure; And be installed in add-in card on the cantilever part; Described add-in card has the small embossment that supports the magnetic head holding board in order to part.In the present invention, this add-in card has the lifting sheet.In one embodiment, this add-in card is fixed on the cantilever part by the laser bonding mode.This add-in card further comprises the coupling part that connects cantilever part, and the plate body that is connected with the lifting sheet, and wherein said small embossment is formed on the plate body.This coupling part is a triangle.
A kind of magnetic head cantilever combination of the present invention comprises: at least one magnetic head fold piece combination; And the actuating arm that is connected with this at least one magnetic head fold piece combination.Wherein said each magnetic head fold piece combination comprises: magnetic head; Cantilever part, described cantilever part comprises the magnetic head holding board, and described magnetic head holding board and described cantilever part are one-body molded, and described cantilever part is a slice structure; Be installed in the add-in card on the cantilever part; Described add-in card has the small embossment that supports the magnetic head holding board in order to part.In the present invention, this add-in card has the lifting sheet.
A kind of disc drive unit of the present invention comprises: the magnetic head cantilever combination; The actuating arm that is connected with this magnetic head cantilever; Disk; Drive the Spindle Motor of this disk rotation; And disc driver casing with slope (ramp).This magnetic head cantilever combination comprises: at least one magnetic head fold piece combination; The actuating arm that is connected with this at least one magnetic head fold piece combination; Wherein said each magnetic head fold piece combination comprises: magnetic head; Cantilever part, described cantilever part comprises the magnetic head holding board, and described magnetic head holding board and described cantilever part are one-body molded, and described cantilever part is a slice structure; Be installed in the add-in card on the cantilever part; Described add-in card has the small embossment that supports the magnetic head holding board in order to part.In the present invention, described add-in card has a lifting sheet.
A kind of method of making magnetic head fold piece combination of the present invention may further comprise the steps:
(1) formation has the cantilever part of magnetic head holding board, the add-in card with small embossment and magnetic head;
(2) magnetic head is installed on the cantilever part;
(3) add-in card is connected on the cantilever part.
In the present invention, form add-in card and further be included in the step that forms the lifting sheet on the add-in card.
Compared with prior art, at first, because magnetic head fold piece combination of the present invention (magnetic head cantilever combination, disc driver) comprises an add-in card that is provided with small embossment, this add-in card is connected on the cantilever part after magnetic head is installed on cantilever part.Because eliminated the influence of small embossment on the add-in card, magnetic head can reliably and easily be installed on the cantilever part.In addition because cantilever part has the single piece type structure, so be easy to make and have very little, be present in the lap in the prior art cantilever part.Accordingly, this will reduce the inertia of whole head arm combination (magnetic head cantilever combination, disc driver), thereby its shock resistance is improved.In addition, because add-in card is connected on the cantilever part after magnetic head is installed on cantilever part, so be easy to small embossment is aimed at the magnetic head center.Like this, load pressure always is applied on the central area of magnetic head by small embossment, thereby keeps the static state and the dynamic posture of magnetic head, thus guarantee magnetic head successfully from the disk reading of data or on disk write data.The present invention is described further below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the stereographic map of traditional head arm combination (HAA).
Fig. 2 is the synoptic diagram in the magnetic head zone of head arm combination among Fig. 1.
Fig. 3 is the stereographic map that head arm of the present invention makes up first embodiment.
Fig. 4 is the three-dimensional wiring layout of Fig. 3.
Fig. 5 is the partial enlarged drawing of head arm combination among Fig. 4, is used to show the stiffening rib on it.
Fig. 6 A-6B has showed magnetic head has been installed to process on the cantilever part of the head arm combination among Fig. 4.
Fig. 7 is the synoptic diagram in the magnetic head zone of the head arm combination among Fig. 4.
Fig. 8 is the stereographic map that the present invention has an embodiment of head driver unit of add-in card.
Embodiment
As implied above, the invention provides a kind of magnetic head fold piece combination (HGA), and a kind of manufacture method of magnetic head fold piece combination is to simplify the assembling of magnetic head fold piece combination with add-in card.This magnetic head fold piece combination comprises magnetic head, have the cantilever part of magnetic head holding board and be installed in add-in card on the cantilever part, and this add-in card has the small embossment that part supports this magnetic head holding board.
In the present invention, this add-in card is connected on the cantilever part after magnetic head is installed on the cantilever part, so the small embossment on it does not influence the installation of magnetic head, for example magnetic head is placed on the cantilever part, magnetic head is connected to go forward side by side electric connection between the Xingqi of cantilever part.In one embodiment, the lifting sheet that this add-in card has and slope (ramp) cooperates.The magnetic head cantilever combination (HSA) of below describing such magnetic head fold piece combination in detail and having this kind magnetic head fold piece combination with add-in card.
Please refer to Fig. 3-4, according to one embodiment of present invention, head arm combination 13 (the magnetic head cantilever combination of a magnetic head fold piece combination is only arranged) comprises magnetic head 203, carries the cantilever part 14 of this magnetic head 203, is bonded on add-in card 15 and actuating arm 34 (this cantilever part 14 and magnetic head 203 are formed magnetic head fold piece combination 18) on the cantilever part 14.This cantilever part 14 comprises the connecting portion 131 that is connected with actuating arm 34, the magnetic head holding board 328 of load magnetic head 203, and the base portion 399 that connects connecting portion 131 and magnetic head holding board 328.Among the present invention, this cantilever part 14 is integrative-structures, forms a plurality of cables (trace) 309 on it.
In the present invention, cantilever part 14 with single piece type structure has been avoided when flexible element and load beam are assembled into cantilever part its specific part being superimposed together, accordingly, the superimposed part of flexible element and load beam will not exist, thereby reduce the height and the weight of whole head arm combination (magnetic head cantilever combination, disc driver).Simultaneously, the weight that reduces whole head arm combination (magnetic head cantilever combination, disc driver) will reduce its inertia, thereby its shock resistance is improved.
In one embodiment of the invention, with reference to figure 3-4, described cantilever part is a web member, and described conducting wire 309 combines with its one, thereby being electrically connected of printed circuit board (PCB) (PCBA, not shown) and 203 of magnetic heads is provided.In the present invention, described cantilever part can be made by a kind of stacked (laminate), for example, this stacked can be circuit cantilever combination (trace suspension assembly, TSA), circuit one cantilever (circuit integrated suspension, CIS) and flexible cantilever combination (flexsuspension assembly, FSA).After described cantilever part 14 is made, it will combine with actuating arm 34 by welding or other traditional approachs.
In the present invention, stiffening rib vertically is formed on the described cantilever part 14 in order to improve its rigidity, makes magnetic head 203 maintain the precalculated position of a relative magnetic disk surface thereby make cantilever part 14 have enough rigidity.Like this, the rigidity of cantilever part 14 will increase greatly, thus one load/load operation (load-unload operation) just can not finished smoothly.In one embodiment of the invention, with reference to figure 5, described stiffening rib is at least one track, and for example, two tracks 132, described track 132 are that the sidepiece by the described base portion 399 of bending forms.
Please refer to Fig. 4, magnetic head 203 1 ends have a plurality of electric contacts 204.Magnetic head holding board 328 also has the electric contact 204 corresponding electric contacts 141 with this magnetic head 203 in the precalculated position.A plurality of Metal Ball 400 (GBB or SBB please refer to Fig. 6) electrically connect the electric contact 204 of this magnetic head 203 and the electric contact 141 of magnetic head holding board 328, thereby set up the electric connection between magnetic head 203 and the magnetic head holding board 328.
Please refer to Fig. 3-4, this add-in card 15 comprises the connecting portion 151 that connects cantilever part 14, which is provided with small embossment 153 with the plate body 152 of supporting magnetic head holding board 328 and the lifting sheet 154 that matches with the slope 121 (please refer to Fig. 8) of disc driver.In the present invention, this add-in card 15 can be made by stainless steel or other rigid material.In one embodiment, this connecting portion 151 is leg-of-mutton, with the contact area of expansion with cantilever part 14.This small embossment 153 is positioned on the plate body 152 to be installed in corresponding position, position on the magnetic head holding board 328 with magnetic head 203.In the present invention, this add-in card 15 can be connected on the cantilever part 14 by laser bonding, bonding or other combination.
In the present invention, a kind of manufacture method of magnetic head fold piece combination 18 comprises the steps:
(1) formation has the cantilever part 14 of magnetic head holding board 328, the add-in card 15 with small embossment 153 and magnetic head 203;
(2) magnetic head 203 is installed on the cantilever part 14;
(3) add-in card 15 is connected on the cantilever part 14.
In one embodiment of the invention, form add-in card and further be included in the step that forms the lifting sheet on the add-in card.This cantilever part 14 is made by seamless sheet material.Please refer to Fig. 6 A-6B, in the process that magnetic head 203 is installed on the cantilever part 14, at first bonding agent or epoxy glue are put on the magnetic head holding board 328, then magnetic head 203 is placed on the cantilever part 14.Because this cantilever part 14 itself has flat structure, so it can be supported by worktable 500, magnetic head 203 is easy to be installed on the precalculated position of magnetic head holding board 328 like this, can apply external pressure F so that magnetic head 203 usefulness bonding agents or epoxy glue are closely adhered on the magnetic head holding board 328 to magnetic head 203 simultaneously.Equally, the electric connection between magnetic head 203 and the cantilever part 14 also is able to smooth operation because of cantilever part 14 flat structures.
Please refer to Fig. 7, after magnetic head 203 was installed on the cantilever part 14, add-in card 15 was connected on the cantilever part 14.In the present invention, described add-in card 15 comprises small embossment 153, and this small embossment 153 promotes the benchmark of sheet 15 and cantilever part 14 as assembling.This small embossment 153 preferably be positioned at magnetic head 203 in the heart so that load force always keeps acting on the central area of magnetic head 203 by this small embossment 153 always.To keep the static state and the dynamic posture of magnetic head 203 like this, thereby guarantee that magnetic head 203 successfully reads or write data from disk 101 (please refer to Fig. 8).Here, because add-in card 15 is connected on the cantilever part 14 after magnetic head 203 is installed on the cantilever part 14, therefore be easy to described small embossment 153 is aimed at magnetic head 203 centers.Though small embossment 153 still can be propped up certain angle with cantilever part 14, at first be installed on the cantilever part 14 because of magnetic head 203, so the connection of magnetic head 203 and unaffected.
In an embodiment of the present invention, the step of formation add-in card 15 includes:
(1) forms connecting portion 151, plate body 152 and lifting sheet 154;
(2) on plate body 152, form small embossment 153 to support magnetic head 203.
Described connecting portion 151, plate body 152 and lifting sheet 154 are made by seamless sheet material.
In the present invention, head arm combination 13 only is an example that is used to explain add-in card 15 principle of work, but the present invention is not limited to the combination of this kind head arm, and obviously the present invention can be applicable to other combinations of head arm with add-in card.Two or more magnetic head fold piece combination 18 can be assembled in and form magnetic head cantilever combination of the present invention (HSA) together.
According to one embodiment of the invention, with reference to figure 8, disc drive unit 200 of the present invention can obtain by assembling disk 101, Spindle Motor 102, head arm combination 13 and disk drive housing 90.A slope (ramp) is provided on the disk drive housing 90 and matches in order to the lifting sheet 154 with head arm combination 13.Because it is well known to those of ordinary skill in the art using the process of head arm combination 13 assembling disc drivers 200 of the present invention and the structure of disc driver 200, so be not described in detail in this.
Claims (10)
1, a kind of magnetic head fold piece combination comprises:
Magnetic head;
Cantilever part, described cantilever part comprises the magnetic head holding board, and described magnetic head holding board and described cantilever part are one-body molded, and described cantilever part is a slice structure; And
Be installed in the add-in card on the cantilever part; Described add-in card has the small embossment that supports the magnetic head holding board in order to part.
2, magnetic head fold piece combination as claimed in claim 1 is characterized in that, this add-in card has the lifting sheet.
3, magnetic head fold piece combination as claimed in claim 1 is characterized in that, this add-in card is fixed on the cantilever part by the laser bonding mode.
4, magnetic head fold piece combination as claimed in claim 1 is characterized in that, this add-in card further comprises the coupling part that connects cantilever part, and the plate body that is connected with the lifting sheet, and wherein said small embossment is formed on the plate body.
5, magnetic head fold piece combination as claimed in claim 5 is characterized in that, this coupling part is a triangle.
6, a kind of magnetic head cantilever combination comprises:
At least one magnetic head fold piece combination;
Actuating arm with this at least one magnetic head fold piece combination is connected is characterized in that:
Described each magnetic head fold piece combination comprises:
Magnetic head;
Cantilever part, described cantilever part comprises the magnetic head holding board, and described magnetic head holding board and described cantilever part are one-body molded, and described cantilever part is a slice structure;
Be installed in the add-in card on the cantilever part; Described add-in card has the small embossment that supports the magnetic head holding board in order to part.
7, magnetic head cantilever combination as claimed in claim 6 is characterized in that this add-in card has the lifting sheet.
8, a kind of disc drive unit comprises:
The magnetic head cantilever combination;
The actuating arm that is connected with this magnetic head cantilever;
Disk;
Drive the Spindle Motor of this disk rotation;
Have the disc driver casing on slope (ramp), it is characterized in that:
This magnetic head cantilever combination comprises:
At least one magnetic head fold piece combination;
The actuating arm that is connected with this at least one magnetic head fold piece combination; Wherein
Described each magnetic head fold piece combination comprises:
Magnetic head;
Cantilever part, described cantilever part comprises the magnetic head holding board, and described magnetic head holding board and described cantilever part are one-body molded, and described cantilever part is a slice structure;
Be installed in the add-in card on the cantilever part; Described add-in card has the small embossment that supports the magnetic head holding board in order to part.
9, a kind of method of making magnetic head fold piece combination may further comprise the steps:
(1) formation has the cantilever part of magnetic head holding board, the add-in card with small embossment and magnetic head;
(2) magnetic head is installed on the cantilever part;
(3) add-in card is connected on the cantilever part.
10, the method for manufacturing magnetic head fold piece combination as claimed in claim 9 is characterized in that: form add-in card and further be included in the step that forms the lifting sheet on the add-in card.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100756185A CN100559474C (en) | 2005-05-31 | 2005-05-31 | Magnetic head fold piece combination and manufacture method thereof with add-in card |
| JP2006151468A JP2006338861A (en) | 2005-05-31 | 2006-05-31 | Head gimbal assembly equipped with added board, and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100756185A CN100559474C (en) | 2005-05-31 | 2005-05-31 | Magnetic head fold piece combination and manufacture method thereof with add-in card |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1873780A CN1873780A (en) | 2006-12-06 |
| CN100559474C true CN100559474C (en) | 2009-11-11 |
Family
ID=37484223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100756185A Expired - Fee Related CN100559474C (en) | 2005-05-31 | 2005-05-31 | Magnetic head fold piece combination and manufacture method thereof with add-in card |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2006338861A (en) |
| CN (1) | CN100559474C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7907368B2 (en) * | 2007-03-26 | 2011-03-15 | Sae Magnetics (Hk) Ltd. | Balanced head gimbal assembly for improved seeking performance |
| CN113450833B (en) * | 2020-03-24 | 2024-10-18 | 东莞新科技术研究开发有限公司 | Magnetic head driving arm combination and its manufacturing method and magnetic disk driver |
-
2005
- 2005-05-31 CN CNB2005100756185A patent/CN100559474C/en not_active Expired - Fee Related
-
2006
- 2006-05-31 JP JP2006151468A patent/JP2006338861A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN1873780A (en) | 2006-12-06 |
| JP2006338861A (en) | 2006-12-14 |
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Owner name: DONGGUAN SAE TECHNOLOGY R+D CO., LTD. Free format text: FORMER OWNER: NEW TECHTRONIC INDUSTRIES CO. LTD. Effective date: 20091127 |
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Effective date of registration: 20091127 Address after: Hongyuan Industrial Zone, Dongguan, Guangdong Patentee after: SAE Technologies Development (Dongguan) Co., Ltd. Address before: New centre, six East Science Avenue, Sha Tin, Hongkong Science Park, Sha Tin, New Territories, Hongkong Patentee before: Xinke Industry Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091111 Termination date: 20160531 |