CN1372248A - Hanging device for floppy disc driver - Google Patents
Hanging device for floppy disc driver Download PDFInfo
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- CN1372248A CN1372248A CN 02103550 CN02103550A CN1372248A CN 1372248 A CN1372248 A CN 1372248A CN 02103550 CN02103550 CN 02103550 CN 02103550 A CN02103550 A CN 02103550A CN 1372248 A CN1372248 A CN 1372248A
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Abstract
The present invention relates to a head suspension for a disk drive incorporated in an information processing unit such as a personal computer. The head suspension for a disk drive has support plate means (3, 7) serving as a carriage arm and a load beam. The load beam consists of a rigid part (13) and a resilient part (15), to apply load to a slider (49) of a head. The support plate means (3, 7) consists of at least layered two plates (3, 7). At least one (7) of the plates (3, 7) has a thickness (t2) appropriate for forming precision holes therethrough by etching. A pivot hole (31) is formed through the plate (7). A loose hole larger than and substantially concentric with the pivot hole is formed through the plate (3). The plates (3, 7) have improved flatness, and the pivot hole has improved accuracy.
Description
Technical field
The present invention relates to for example be built in the hanging device for floppy disc driver in the signal conditioning packages such as personal computer.
Background technology
So far, the base plate of hanging device for floppy disc driver (below, be called for short suspender) is welded on an end of loading plate, and base plate is used for suspender is installed in bracket arm.These suspenders are configured in the vertical direction between the surface of bracket arm and each disk, make whole height higher, and its miniaturization is restricted.
To this, specially permit the Figure 16 that is put down in writing for No. 3089360, the scheme of Figure 17 just like Japan.As Figure 16, shown in Figure 17, this device is that loading plate 105 is welded on the elongated base plate 103 of suspender 101.Elongated base plate 103 has pivot hole 107.This pivot hole 107 cooperates accurately with not shown bracket bearing and is supported by axle.Therefore, with regard to the example of this Figure 16, Figure 17, the above-mentioned existing bracket arm of elongated base plate 103 double as, with respect to disk 109, the whole height of suspender 101 can reduce, and can realize miniaturization more.
Summary of the invention
Yet, in above-mentioned existing structure,, have the problem of bringing because of the flatness of elongated base plate 103 because pivot hole 107 is set directly on the elongated base plate 103.That is, elongated base plate 103 because the double as bracket arm just must be guaranteed its rigidity, needs thickness of slab to a certain degree as mentioned above.Therefore, when forming pivot hole 107, must comprise under the situation of pivot hole elongated base plate 103 roman press formings because its precision is limited with etch processes.
Therefore, because there is the danger that brings problem because of the flatness of elongated base plate 103 in the residual deformation behind the press forming.
Purpose of the present invention just is to provide a kind of hanging device for floppy disc driver, improves the flatness of elongated base plate itself when it can have high-precision pivot hole.
First technical scheme of hanging device for floppy disc driver of the present invention is, this device has and axle is bearing in the back up pad device of the support sector of carriage and double as bracket arm and has rigid section at least and flexibly be bearing on the above-mentioned back up pad device and the loading of will loading is added in the loading plate on the contact of its front end, it is characterized in that, in this device, above-mentioned back up pad device is formed by two-ply at least, and at least one side's of this plate thickness can form high-precision hole by etch processes; On an above-mentioned side's plate, form the pivot hole that cooperates with above-mentioned support sector; On above-mentioned the opposing party's plate, form with the bigger hole or not only concentric but also with the pivot hole of diameter that is rotatably assorted of the roughly concentric above-mentioned pivot hole of ratio of above-mentioned pivot hole with above-mentioned pivot hole.
Second technical scheme of hanging device for floppy disc driver of the present invention is, in above-mentioned first technical scheme, it is characterized in that, above-mentioned the opposing party's plate is made up of resin bed and metal level, above-mentioned resin bed is clipped between an above-mentioned side's the plate and above-mentioned metal level, thereby above-mentioned back up pad device is made three-decker.
The 3rd technical scheme of hanging device for floppy disc driver of the present invention is in above-mentioned first or second technical scheme, to it is characterized in that an above-mentioned side's plate constitutes above-mentioned elongated base plate together with above-mentioned the opposing party's plate.
The 4th technical scheme of hanging device for floppy disc driver of the present invention is, in above-mentioned the 3rd technical scheme, it is characterized in that, have rigid section with loading plate and be bearing in spring members on the above-mentioned back up pad device, one end of above-mentioned spring members overlaps the end of above-mentioned rigid section and gives fixingly, and the other end of above-mentioned spring members overlaps the end of above-mentioned elongated base plate and gives fixing.
The 5th technical scheme of hanging device for floppy disc driver of the present invention is, in above-mentioned the 3rd technical scheme, it is characterized in that, above-mentioned loading plate have rigid section and with rigid section flexibly be bearing on the above-mentioned back up pad device spring portion and be made of one with a plate, the end of above-mentioned loading plate overlaps the end of above-mentioned elongated base plate and gives fixing.
The 6th technical scheme of hanging device for floppy disc driver of the present invention is, in above-mentioned first or second technical scheme, it is characterized in that an above-mentioned side's plate and above-mentioned loading plate are made of one, and above-mentioned the opposing party's plate constitutes above-mentioned elongated base plate.
The 7th technical scheme of hanging device for floppy disc driver of the present invention is, in above-mentioned first, second or the 3rd technical scheme, it is characterized in that, above-mentioned rigid section flexibly is bearing in spring portion on the above-mentioned back up pad device and an above-mentioned side's plate is made of one, the end of above-mentioned loading plate overlaps the end of above-mentioned spring portion and gives fixing.
If use first scheme of the present invention, because the back up pad device is formed by two-ply at least, at least one side's of this plate thickness of slab can form high-precision hole by etch processes, thereby can form above-mentioned pivot hole on an above-mentioned side's plate by etch processes.Thereby, can improve the precision of pivot hole.
And even the opposing party's thickness of slab is thicker, owing to be provided with the be rotatably assorted hole bigger than pivot hole roughly concentric with pivot hole, the accuracy requirement in the hole that is rotatably assorted is not high, thereby the opposing party's plate also can be shaped by etch processes.In addition, when the thickness of slab of the opposing party's plate also can be shaped high-precision hole by etch processes, thereby the opposing party's plate also can be shaped by etch processes and obtains high-precision pivot hole.
Like this, the high-precision cooperation between the support sector of high-precision pivot hole and carriage, can make axle obtain a high-precision supporting.In addition and since the back up pad device at least any one deck in the two-ply can be shaped by etch processes, can improve the flatness of back up pad device aspect.
If use alternative plan of the present invention, except the effect of first scheme, form by resin bed and metal level, above-mentioned resin bed is clipped between an above-mentioned side's the plate and above-mentioned metal level, thereby above-mentioned back up pad device is made three-decker, therefore with respect to the principal oscillation system of a side plate, constitute by the quality of the spring constant of the resin bed of the opposing party's plate and decay and metal level and to pay a vibrational system, can improve the vibration characteristics of hanging device for floppy disc driver integral body.
If use third party's case of the present invention, except first or the effect of alternative plan, an above-mentioned side's plate is owing to can constitute above-mentioned elongated base plate together with above-mentioned the opposing party's plate, just can be shaped by etch processes and constitute the plate of elongated base plate, can improve the precision of pivot hole, can with the support sector of carriage between cooperate and support with high precision with axle.In addition, can improve the flatness of elongated base plate.
If use cubic case of the present invention, except the effect of third party's case, owing to have the spring members that the rigid section of loading plate is bearing in above-mentioned back up pad device, one end of above-mentioned spring members overlaps the end of above-mentioned rigid section and gives fixing, the other end of above-mentioned spring members overlaps the end of above-mentioned elongated base plate and gives fixing, with respect to the rigid section of loading plate, spring portion can constitute by other parts.Therefore, cough selected respectively material and the thickness of slab that is suitable for rigid section and spring portion, make and guarantee that simultaneously desired performance of rigid section (for example high rigidity) and the desired performance of spring portion (for example low spring constant) become easy.By spring members being adopted high-precision material, can obtain the spring portion of stable low spring constant.
Have, the thickness of slab of rigid section is thicker again, then more may make its high rigidization and nib and stiffening rib needn't be set.Therefore, air mobile smooth and easy even the disk high-speed rotation is not subjected to the influence of random wind yet, can suppress the tremble generation of (being caused the vibration of suspender by wind) of suspender.
If use the 5th scheme of the present invention, except the effect of third party's case, above-mentioned loading plate have rigid section and with rigid section flexibly be bearing on the above-mentioned back up pad device spring portion and be made of one with a steel plate, the end of above-mentioned loading plate overlaps the end of above-mentioned elongated base plate and gives fixingly, so its structure can be done very simply.
If use the 6th scheme of the present invention, except first or the effect of alternative plan, an above-mentioned side's plate and above-mentioned loading plate can be made of one, above-mentioned the opposing party's plate is constituted above-mentioned elongated base plate.Therefore, owing to form plate, when can improve the precision of pivot hole, can improve a side's who is made of one with loading plate plate and constitute the opposing party's of elongated base plate the flatness of plate by etch processes.In addition, owing to a side plate and loading plate can be made of one, can make manufacturing more simple.
If use the 7th scheme of the present invention, except the effect of first, second or the 3rd any one scheme, owing to above-mentioned rigid section flexibly is bearing in the spring portion of above-mentioned back up pad device and an above-mentioned side's plate is made of one, the end of above-mentioned loading plate overlaps the end of above-mentioned spring portion and gives fixing, material and the thickness of slab that is suitable for rigid section can be selected at least, the desired performance of rigid section (for example high rigidity) can be guaranteed.In addition, a side's who is made of one with spring portion plate by adjusting the opposing party's plate, can be selected the material and the thickness of slab that are suitable for spring portion, can guarantee the desired performance of spring portion (for example low spring constant).Therefore, can select material and the thickness of slab that is suitable for rigid section and spring portion respectively, make and guarantee that simultaneously desired performance of rigid section (for example high rigidity) and the desired performance of spring portion (for example low spring constant) become easy.Have again,, can make structure more simple because a side's of spring portion and back up pad device plate is made of one.
Description of drawings
Fig. 1 is the stereographic map of the suspender of the relevant first embodiment of the present invention.
Fig. 2 (a) is the vertical view of the elongated base plate of the relevant first embodiment of the present invention.
Fig. 2 (b) is the vertical view of the loading plate that is made of one with plate of the relevant first embodiment of the present invention.
Fig. 2 (c) is the upward view of above both bonding states.
Fig. 3 is the stereographic map of the suspender of the relevant second embodiment of the present invention.
Fig. 4 is about the semi-manufacture of the suspender of second embodiment and the stereographic map of spring members.
Fig. 5 is the stereographic map about the suspender of the modified example of second embodiment.
Fig. 6 is the stereographic map about the suspender of another modified example of second embodiment.
Fig. 7 is the vertical view of the suspender of the relevant third embodiment of the present invention.
Fig. 8 is the amplification Side view of the suspender of relevant the 3rd embodiment.
Fig. 9 is about the 3rd embodiment, at the sectional view at the SA-SA place of Fig. 7.
Figure 10 is about the 3rd embodiment, at the sectional view at the SB-SB place of Fig. 7.
Figure 11 is about the 3rd embodiment, the sectional view that amplifies at the SC-SC place of Fig. 7.
Figure 12 is the figure of explanation about the part of the manufacturing procedure of the suspender of the 3rd embodiment, among the figure, (a) be the process chart of the thermo-compressed of base material, (b) for processing the process chart of pivot hole, (c) be the sectional view of the formation state of pivot hole, (d) for process the process chart in the hole that is rotatably assorted at metal level, (e) form the sectional view of state for the hole that is rotatably assorted at metal level, (f) for process the process chart in the hole that is rotatably assorted at resin bed, (g) form the sectional view of state for the hole that is rotatably assorted at metal level.
Figure 13 is the stereographic map of the suspender of the relevant fourth embodiment of the present invention.
Figure 14 is the stereographic map of the suspender of the relevant fifth embodiment of the present invention.
Figure 15 is the stereographic map of suspender of the modified example of the relevant fifth embodiment of the present invention.
Figure 16 is the stereographic map of the head disk actuator assembly example of relevant prior art.
Figure 17 is the sectional view of the example of relevant prior art.
Among the figure, 1,1A, 1B, 1C, 1D, 1E, 1F disc type drive and use suspender;
3,3A, 7B, 7D the opposing party's plate (back up pad device)
3Aa, 7Da resin bed
3Ab, 7Db metal level
5,5A, 5B, 5C loading plate
5C loading plate end
7,7A, 7C, 7E the opposing party's plate (back up pad device)
9 holes that are rotatably assorted
13 rigid sections
15,15A spring portion
One Side of 15 spring portions (end of loading plate)
The end of 15Aa spring portion
30,30A elongated base plate (back up pad device)
The 30a end
31 pivot holes
43 contacts
47 spring members
47a one end
47b the other end
Embodiment first embodiment
Fig. 1 is the stereographic map of the suspender integral body of the relevant first embodiment of the present invention of expression.As this Fig. 1, the plate 7 that suspender has elongated base plate 3, loading plate 5 and is made of one with this loading plate 5.Use this structure, in the present embodiment, form the back up pad device with two-ply 3,7 at least; This back up pad device is bearing in the support and the double as bracket arm of carriage with axle.That is, since elongated base plate 3 with plate 7 double as bracket arms, so do longlyer to above-mentioned loading plate 5 by the support of carriage.
Above-mentioned plate 3 usefulness for example stainless steel are made, and its thickness of slab is chosen to be t1=0.15mm in the present embodiment.In plate 3, please refer to the vertical view of Fig. 2 (a), form the hole 9 that is rotatably assorted in corresponding part with the support of carriage.The diameter in this hole 9 that is rotatably assorted is chosen to be Φ 1=9.1mm in the present embodiment.In plate 3, also in the position perforate 11 that matches with plate 7.
Above-mentioned loading plate 5 and plate 7 usefulness for example stainless steel are made, and its thickness of slab is chosen to be t2=0.051mm in the present embodiment.Therefore, the structure of plate 7 is made its thickness of slab and can be formed the high hole of precision by etch processes.It is t=0.201mm that this loading plate 5 and plate 7 and above-mentioned plate 3 are made its gross thickness with kit form.In the present embodiment, the maximal value of the thickness of slab of loading plate 5 and plate 7 is t2=0.064mm.Even in this case, also must to make its gross thickness be t=0.201mm in the decision of the thickness of plate 3.
Above-mentioned loading plate 5 has with L1 as Fig. 1 to be represented the rigid section 13 of length and represents the spring portion 15 of length with L2.The structure of this spring portion 15 is that above-mentioned rigid section 13 flexibly is supported in above-mentioned back up pad device (plate 3, plate 7).Above-mentioned loading plate 5 reaches the plate 7 that is made of one with it, please refer to the vertical view of Fig. 2 (b), and at first, nib 17,19 is formed on the rigid section 13 of loading plate 5 by bending machining.By the effect of this nib 17,19, not only the rigidity of rigid section 13 can be kept but also its weight can be alleviated, also can improve frequency characteristic and vibration characteristics.In addition, in rigid section 13, be provided with to carry out the dimple 27 that the hole 23,25 of contraposition is connected with tongue piece with flexible piece 21 with the position of flexible piece 21.Spring portion 15 at above-mentioned loading plate 5 is provided with peristome 29 so that the setting spring constant.
In above-mentioned plate 7, be provided with pivot hole 31 with the support high precision cooperation of carriage.The diameter of this pivot hole 31 is also littler than the diameter of phi 1=9.1mm in above-mentioned hole movingly 9, in the present embodiment, and selected Φ 2=9mm.In addition, on plate 7, be provided with the hole 33 that the position with above-mentioned plate 3 positions.
As Fig. 1, above-mentioned flexible piece 21 is to form conducting channel 37 on the surface of the thin metal substrates 35 such as stainless steel calendering plate of rubber-like with the insulation of one deck electric insulation layer.One end of this conducting channel 37 is connected with the terminal of magnetic head portion 39, and the other end is connected with the terminal 41 of above-mentioned plate 7.Said head portion 39 has contact 43, and this contact 43 is supported in the tongue piece portion 45 of flexible piece 21.This tongue piece portion 45 is connected on the above-mentioned dimple 27 of the rigid section 13 shown in Fig. 2 (b).
The manufacture method of such suspender 1 is as follows.At first, the loading plate 5 that is made of one to plate 3, with plate 7 carries out etch processes respectively.Then on plate 3, formed the hole 11 of be rotatably assorted hole 9 and location usefulness by this processing.In addition, to being made of one, then form hole 23,25,33 and the peristome 29 of pivot hole 31, location usefulness with plate 7.Secondly, loading plate 5 is formed nib 17,19 and dimple 27 by compacting.
Plate 3 of Xing Chenging and the loading plate 5 that is made of one with plate 7 are superimposed as the vertical view of Fig. 2 (c) like this.When superimposed with in the pin patchhole 11,33 so that determine both positions.In this state with Laser Welding (LBW) etc. thereon with the partial fixing of plate 7 to plate 3.In addition, the partial fixing with plate 7 also can carry out with bonding etc. on plate 3.
Subsequently, the hole 23,25 of using location usefulness is rigid section 13 location of flexible piece 21 with loading plate 5, with Laser Welding (LBW) etc. flexible piece 21 is fixed on the rigid section 13.At this moment, as mentioned above, 45 alignings of the tongue piece portion of flexible piece 21 are connected on the dimple 27.
And with regard to the state that 7 pairs of plates of plate 3 are fixed, the pivot hole 31 and the hole 9 that is rotatably assorted are substantially concentric arrangement, and for the hole 9 that is rotatably assorted is enclosed in interior form with pivot hole 31, pivot hole 31 are effectively played a role.But in the hole 9 that is rotatably assorted was enclosed in pivot hole 31, as long as pivot hole 31 can effectively play a role, the center of be rotatably assorted hole 9 and pivot hole 31 also can have a little to depart from.Therefore, by pivot hole 31 being cooperated with the support high precision of carriage and with the axle supporting, but plate 3 is with plate 7 double as bracket arms.
In addition, in the present embodiment, the part of plate 7 is strengthened the function that can bring into play more reliably as bracket arm with plate 3, simultaneously, also can make the thickness of slab attenuation of plate 3, plate 3 is shaped by etch processes becomes easier.
And, in the present embodiment, owing to can improve the precision of pivot hole 31 significantly by the etch processes pivot hole 31 that is shaped.In addition, because the precision to the hole 9 that is rotatably assorted does not require, plate 3 is compared with the thickness of slab t2 of the loading plate 5 that is made of one with plate 7, even adopt thick thickness of slab t1, plate 3 can pass through etching forming, the loading plate 5 that is made of one with plate 7 also is shaped simultaneously by etching, can improve the integral planar degree of plate 3 significantly.
Have, in the present embodiment, because plate 7 is made of one with loading plate 5, the part number is few again, and it is also all easy to make, operate.Second embodiment
Fig. 3, Fig. 4 represent the second embodiment of the present invention.Fig. 3 is the whole stereographic map of expression, and Fig. 4 is the semi-manufacture of expression suspender and the stereographic map of spring members.In addition, with respect to the suspender 1 of Fig. 1 embodiment, the part that structure is identical uses identical label to be illustrated.
In the present embodiment, have by can be shaped thickness of slab one side's the plate 7A of high accurate hole of above-mentioned etch processes and constitute elongated base plate 30 with the opposing party's plate 7B.This elongated base plate 30 in the present embodiment, constitutes the back up pad device.That is, in the present embodiment, its structure is to form the back up pad device by two- ply 7A, 7B at least.
And above-mentioned the opposing party's plate 7B makes with stainless steel etc., and in the present embodiment, its thickness of slab is chosen to be for example t1=0.101mm.An above-mentioned side's plate 7A reinstates stainless steel etc. with loading plate 5 one and makes, and its thickness of slab is chosen to be=0.100mm.Therefore, total thickness of slab of elongated base plate 30 is t=0.201mm.An above-mentioned side's plate 7A goes up and forms pivot hole 31, and forms the hole 9 that is rotatably assorted on above-mentioned the opposing party's plate 7B.
In addition, in the present embodiment, have rigid section 13 with loading plate 5 and flexibly be supported in other spring members 47 on the above-mentioned back up pad device (elongated base plate 30).The thickness of above-mentioned rigid section 13 is also thicker than the thickness of slab of above-mentioned spring members 47, and is in the present embodiment, identical with the thickness of slab of above-mentioned plate 7A.On this rigid section 13, be formed on the peristome that connects on its thickness direction.
Above-mentioned spring members 47 is by for example, and the thin stainless steel calendering of rubber-like plate constitutes, and one end 47a is with fixing by Laser Welding (LBW) etc. with the equitant state of end 13a of above-mentioned rigid section 13.The other end 47b of this spring members 47 overlaps on the end 30a as the elongated base plate 30 of the end of an above-mentioned side's plate 7A, and fixing by Laser Welding (LBW) etc.In addition, peristome 47c is set, then plays a role as spring portion 15 with low spring constant at two Side of this peristome 47c at the middle part of spring members 47.Have again, form bending part 47d by a part of bending with spring members 47.
Fig. 4 is the suspender semi-manufacture 51 that expression forms an above-mentioned loading plate 5A and a side's plate 7A.These suspender semi-manufacture 51 have the plate 7A that constitutes elongated base plate 30 1 sides, the rigid section 13 of loading plate 5A and with plate 7A and rigid section 13 the two pair of right and left connecting portions 53 that couple together.Above-mentioned connecting portion 53, as shown in Figure 3, when when overlapping, two Side of spring members 47 being stretched out spring members 47 and elongated base plate 30 and rigid section 13.
And, with spring members 47 across suspender semi-manufacture 51 between the two and overlap, by for example Laser Welding (LBW) etc. spring members 47 is fixed on plate 7A and the rigid section 13.Again with press etc. connecting portion 53 by rigid section 13 and plate 7A cut off thereafter.
Subsequently, plate 7B and plate 7A location is fixing with Laser Welding (LBW) etc., through being installed, flexible piece 21 finishes suspender 1A again.
Like this, in the present embodiment, can form by etch processes and to have the suspender semi-manufacture 51 that thickness of slab is t2, this thickness of slab can be by the etch processes high accurate hole that is shaped, and the pivot hole 31 that can be shaped can significantly improve the precision of pivot hole 31.
Form the hole 9 that is rotatably assorted on the opposing party's who constitutes above-mentioned elongated base plate 30 plate 7B, this hole 9 that is rotatably assorted as mentioned above, owing to do not require precision, manyly also can be shaped by etch processes even its thickness of slab t1 is thick.
Therefore, plate 7A, 7B both can be shaped by etch processes, can improve the flatness of elongated base plate 30 significantly.And, in the present embodiment, rigid section 13 for loading plate 5A, spring portion 15 constitutes with other part, owing to can select suitable material and thickness of slab respectively, rigid section 13 desired performances (for example high rigidity) and spring portion 15 desired performances (for example low spring constant) both is reached easily.In elastomeric element 47,, can obtain the spring portion 15 of stable low spring constant by using high-precision rolled material.
Have again, in the present embodiment, make t2=0.1mm, can make rigid section 13 have enough rigidity owing to the thickness of slab of rigid section 13 and plate 7A is got.In addition,, make the mobile smooth and easy of air on rigid section 13,, can suppress the generation of suspender shake (producing vibration) because of wind makes suspender even the disk high speed rotating is not subjected to the influence of random wind yet owing to there is no need nib and stiffening rib are set.
In addition, an above-mentioned side's plate 7A and the opposing party's plate 7B can make the configuration of turning upside down as shown in Figure 5.
That Fig. 6 represents is the embodiment of another modified example of relevant above-mentioned second embodiment.Fig. 6 is the overall perspective view of suspender 1B.In the present embodiment, the structure of elongated base plate 30 is identical with the structure of the suspender 1A of second embodiment of above-mentioned Fig. 3 substantially, and the structure of loading plate 5B is identical with the structure of the suspender 1 of above-mentioned first embodiment substantially.Therefore, use identical label to be illustrated with the corresponding component part of Fig. 1, Fig. 3.
In the embodiment of Fig. 6, loading plate 5B has rigid section 13 and this rigid section 13 flexibly is bearing in spring portion 15 on the above-mentioned back up pad device (elongated base plate 30), and its structure is that this rigid section 13 and spring portion steel plate of 15 usefulness are made of one.Side 15a as the spring portion 15 of above-mentioned loading plate 5B end overlaps on the end 30a of above-mentioned elongated base plate 30, and fixing by Laser Welding (LBW) etc.
In the present embodiment, a side plate 7A is with forming by the be shaped thickness of slab t2 of high accurate hole of etch processes.By process this plate 7A with etch processes, can form pivot hole 31, can significantly improve the precision of pivot hole 31.
On the opposing party's who constitutes above-mentioned elongated base plate 30 plate 7B, form the hole 9 that is rotatably assorted,, manyly also can form by etch processes even thickness of slab t1 wants thick because this hole 9 that is rotatably assorted does not equally require precision as described above.
Therefore, plate 7A, plate 7B both can form by etch processes, can improve the flatness of elongated base plate 30 significantly.And in the present embodiment, the rigid section 13 of loading plate 5 and spring portion 15 owing to be made of one with a steel plate, can make simple in structure.
In the various embodiments described above, all be that a side is made pivot hole 31, and the opposing party is made the hole 9 that is rotatably assorted, and at least the both sides of two-ply to be used and can form by the be shaped thickness of slab of high accurate hole of etch processes, its structure makes the both sides can both be by the etch processes high precision pivot hole that is shaped.The 3rd embodiment
Fig. 7～Figure 12 represents the third embodiment of the present invention.Fig. 7 is the whole vertical view of suspender 1C, Fig. 8 is that it amplifies the Side view, and Fig. 9 is the sectional view at the SA-SA place of Fig. 7, and Figure 10 is the sectional view at the SB-SB place of Fig. 7, Figure 11 is the sectional view that amplifies at the SC-SC place of Fig. 7, and Figure 12 is the process chart of the part of explanation manufacturing procedure.In addition, with respect to the suspender 1 of first embodiment of Fig. 1, use identical label to be illustrated to corresponding component part.
As Fig. 7, shown in Figure 8, the suspender 1C of present embodiment has loading plate 5, the opposing party's plate 3A on plate 7C that is made of one on this loading plate 5 and the overlapping plate 7C that is arranged on this side.Above-mentioned the opposing party's plate 3A constitutes elongated base plate, because it is with plate 7C double as bracket arm together, is provided with longlyer by the support sector of carriage to above-mentioned loading plate 5.
Above-mentioned loading plate 5 and plate 7C make of for example stainless steel, and its thickness of slab t3 is chosen to be any one among t3=0.040～0.200mm in the present embodiment.Therefore, its structure can form plate 7C with the thickness of slab by etch processes shaping high accurate hole.
Above-mentioned plate 3A such as Fig. 7, Fig. 8, shown in Figure 9 are made up of resin bed 3Aa and metal level 3Ab.Resin bed 3Aa forms with resins such as polyimide, epoxy resin, has certain spring constant and decay.The thickness of slab t4 of resin bed 3Aa is chosen to be any one among t4=0.50～0.100mm in the present embodiment.Above-mentioned metal level 3Ab makes with for example stainless steel, and its thickness of slab t5 is chosen to be t5=0.100mm in the present embodiment, plays a role as the quality of vibrational system.Adopt these structures, in the present embodiment, the back up pad device that is bearing in support sector's double as bracket arm of carriage with axle is formed and this back up pad device is made three-decker by plate 3A, 7C.In addition, the opposing party's plate 3A formation is the vibrational system of paying of principal oscillation system with above-mentioned loading plate 5 and plate 7C one Side.
On above-mentioned plate 7C,, be provided with the pivot hole 31 that cooperates with support sector's high precision of carriage as Fig. 7, shown in Figure 10.The diameter of phi 3 of this pivot hole 31 is chosen to be Φ 3=9.0mm in the present embodiment.On the resin bed 3Aa and metal level 3Ab of above-mentioned plate 3A, have be rotatably assorted hole 9A, the 9B roughly concentric with above-mentioned pivot hole 31.The diameter of phi 4 of this be rotatably assorted hole 9A, 9B is chosen to be Φ 4=9.1mm in the present embodiment respectively.
Above-mentioned loading plate 5 is identical with the embodiment of Fig. 1, as Fig. 7, Fig. 8, shown in Figure 11, has with L1 and represents the rigid section 13 of length and represent the spring portion 15 of length with L2.On the rigid section 13 of this loading plate 5, the bending machining by as hereinbefore is provided with nib 17,19 etc., and its structure roughly embodiment with Fig. 1 is identical.Above-mentioned spring portion 15 its structures are that above-mentioned rigid section 13 flexibly is supported on above-mentioned back up pad device (plate 3A, plate 7C).
As shown in Figure 7, flexible piece 21 also similarly is provided with Fig. 1.One end of conducting channel 37 is communicated with the terminal of magnetic head portion 39, and its other end is communicated with terminal 41.This terminal 41 is configured in by above-mentioned plate 7C outstanding but in the support sector 42 that is wholely set to the Side face.
Subsequently, shown in Figure 12 (b)～Figure 12 (g), form above-mentioned pivot hole 31, hole 9A, 9B are rotatably assorted.Beginning shown in Figure 12 (b), overlays on protective seam 61 on the plate 7C with basic configuration, and protective seam 63 is overlayed on the metal level 3Ab of plate 3A with basic configuration.On above-mentioned protective seam 61, has hole 65.Carry out etch processes with this state, shown in Figure 12 (c), form the pivot hole 31 of plate 7C.
Secondly, shown in Figure 12 (d), protective seam 67 is overlayed on the plate 7C, protective seam 69 is overlayed on the metal level 3Ab of plate 3A with basic configuration.On above-mentioned protective seam 67, has teat 71.This teat 71 is with pivot hole 31 close fit of the plate 7C that has formed.On above-mentioned protective seam 69, has hole 73.Carry out etch processes with this state, shown in Figure 12 (e), on the metal level 3Ab of plate 3A, form the hole 9B that is rotatably assorted.
Other, peristome 29 grades also can equally form by etch processes with first embodiment.With regard to loading plate 5 with regard to, with drawing method form nib 17,19 and dimple etc. thereafter.In addition, flexible piece 21 is also installed with first embodiment the samely.
And in the present embodiment, the pivot hole 31 and the roughly configuration with one heart of hole 9A, 9B that is rotatably assorted become pivot hole 31 and are rotated mating holes 9A, 9B and wrap in wherein state, can make pivot hole 31 bring into play its effect effectively.But, because pivot hole 31 is rotated mating holes 9A, 9B and wraps in wherein, bring into play effectively its effect except making pivot hole 31, also can allow the center of pivot hole 31 and be rotatably assorted hole 9A, 9B that a little off-centre is arranged.Like this, pivot hole 31 can be cooperated accurately and with the support sector of carriage as the supporting of axle, thus but plate 3A, 7C double as bracket arm.
On the other hand, in the present embodiment, as mentioned above, the opposing party's plate 3A constitutes pair vibrational system as the principal oscillation system with above-mentioned loading plate 5 and plate 7C one side, can improve the vibration characteristics of the integral body of suspender 1B.That is because the damping of three-decker, even have because the influence of wind and starting of oscillation input that high-speed driving causes, also can suppress loading plate 5 and plate 7C one side up and down or the vibration of left and right directions etc., can improve above-mentioned vibration characteristics reliably.The 4th embodiment
What Figure 13 represented is the fourth embodiment of the present invention, and it is the modified example of second embodiment of Fig. 3.Figure 13 is the overall perspective view of suspender 1D.In addition, use identical label to be illustrated with the corresponding component part of the suspender 1A of second embodiment of Fig. 3.
In the present embodiment, have side's plate 7A that can form the thickness of slab of high accurate hole, constitute elongated base plate 30 together with the opposing party's plate 7D by above-mentioned etch processes.The back up pad device that this elongated base plate 30 constitutes in the present embodiment.Plate 7D is made up of resin bed 7Da and metal level 7Db.This resin bed 7Da and metal level 7Db, its structure is identical with metal level 3Ab with the resin bed 3Aa of above-mentioned the 3rd embodiment.That is, in the present embodiment, the back up pad device of suspender 1D is made three-decker.
Therefore, in the present embodiment, roughly the same action effect can be brought into play, simultaneously,, the vibration characteristics of suspender 1D integral body can be improved owing to the damping that has with the identical three-decker of above-mentioned the 3rd embodiment with above-mentioned second embodiment.
In addition, identical with above-mentioned second embodiment in the present embodiment, can be used for the plate 7B of Fig. 5 is replaced with above-mentioned plate 7D.The 5th embodiment
What Figure 14 represented is the fifth embodiment of the present invention.Figure 14 is the overall perspective view of suspender 1E.In the present embodiment, the structure of elongated base plate 30A roughly is identical with the structure of the elongated base plate 30 of the suspender 1B of second embodiment of above-mentioned Fig. 6, and the structure of loading plate 5C roughly is identical with the structure of the loading plate 5 of the suspender 1 of first embodiment of above-mentioned Fig. 1.Therefore, use identical label to be illustrated with the corresponding component part of Fig. 1, Fig. 6.
In the embodiment of Figure 14, loading plate 5C has rigid section 13.With regard to present embodiment, flexibly to be bearing in the 15A of spring portion on the above-mentioned back up pad device (elongated base plate 30A) be not loading plate 5C but be made on the elongated base plate 30A with above-mentioned rigid section 13.The side's of this 15A of spring portion and elongated base plate 30A plate 7E is made of one with a steel plate.The end 5Ca of above-mentioned loading plate 5C overlaps on the end 15Aa as the 15A of spring portion of the end of the side's of above-mentioned elongated base plate 30A plate 7E, and fixing by Laser Welding (LBW) etc.
In the present embodiment, the thickness of slab of a side plate 7E is t2, and it can form high-precision hole by etch processes.Owing to form this plate 7E by etch processes, can form pivot hole 31, can significantly improve the precision of pivot hole 31.
On the opposing party's who constitutes above-mentioned elongated base plate 30A plate 7B, form the hole 9 that is rotatably assorted.Because this is rotatably assorted hole 9 as previously mentioned, does not require precision, also can form by etch processes even the thickness of slab t1 of plate 7B is thick slightly.Above-mentioned plate 7E, 7B both can form by etch processes, just can improve the flatness of elongated base plate 30A significantly.
And, in the present embodiment, on the side's of above-mentioned elongated base plate 30A plate 7E, the above-mentioned spring 15A of portion is made of one with it, the end 15Aa that overlaps the above-mentioned spring 15A of portion for the end 5Ca with above-mentioned loading plate 5C goes up and gives fixing, at least the material and the thickness of slab that are suitable for rigid section 13 can be selected, rigid section 13 desired performances (for example high rigidity) can be guaranteed reliably.
In addition, 15A of spring portion and the side's that is made of one with it plate 7E by with the adjustment of the opposing party's plate 7B, can select the material and the thickness of slab that are suitable for the 15A of spring portion, can guarantee the desired performance of the 15A of spring portion (for example hanging down spring constant) reliably.Therefore, can select the material and the thickness of slab that are suitable for rigid section 13 and the 15A of spring portion respectively, make and guarantee that rigid section 13 desired performances (for example high rigidity) and the desired performance of the 15A of spring portion (for example low spring constant) both become easy.
Have again,, can make simple in structure because the side's of 15A of spring portion and elongated base plate 30A plate 7E is made of one with a steel plate.
Figure 15 is the embodiment of modified example of the 5th embodiment of relevant Figure 14.Figure 15 is the stereographic map of the integral body of suspender 1F.In addition, use identical label to be illustrated with the corresponding component part of the suspender 1E of the 5th embodiment of Figure 14.
In the present embodiment, have a side the plate 7E that can form the thickness of slab t2 of high accurate hole and constitute elongated base plate 30B with the opposing party's plate 7D by above-mentioned etch processes.This elongated base plate 30B constitutes the back up pad device in the present embodiment.Plate 7D is made up of resin bed 7Da and metal level 7Db.The structure of this resin bed 7Da and metal level 7Db is identical with the structure of the resin bed 3Aa of above-mentioned the 3rd embodiment and metal level 3Ab.That is, in the present embodiment, the back up pad device of suspender 1F is made three-decker.
Therefore, in the present embodiment, roughly the same action effect can be brought into play,, the vibration characteristics of suspender 1F integral body can be improved simultaneously because the damping action that produces with the roughly the same three-decker of above-mentioned the 3rd embodiment with above-mentioned the 5th embodiment.
With regard to the various embodiments described above, one side is made pivot hole 31, the opposing party is made the hole 9 that is rotatably assorted, by forming two-layer at least plate, and its thickness of slab makes the both form high accurate hole by etch processes, and its structure can guarantee that the both passes through etch processes and forms high-precision pivot hole.
Claims (7)
1, a kind of hanging device for floppy disc driver, this device has and cooperates with the support sector of carriage and with the back up pad device of axle bracket arm supporting, the above-mentioned carriage of double as, at least have rigid section and flexibly be bearing on the above-mentioned back up pad device and the loading of will loading is added in the loading plate on the contact of front end, it is characterized in that: in this device, above-mentioned back up pad device is formed by two-ply at least, and at least one side's of this plate thickness of slab can form high-precision hole by etch processes; On an above-mentioned side's plate, form the pivot hole that cooperates with above-mentioned support sector; On above-mentioned the opposing party's plate, form with above-mentioned pivot hole roughly concentric, than the bigger hole or not only concentric but also with the pivot hole of diameter that is rotatably assorted of above-mentioned pivot hole with above-mentioned pivot hole.
2, a kind of hanging device for floppy disc driver of putting down in writing according to claim 1, it is characterized in that: above-mentioned the opposing party's plate is made up of resin bed and metal level, above-mentioned resin bed is clipped between an above-mentioned side's the plate and above-mentioned metal level, thereby above-mentioned back up pad device is made three-decker.
3, according to a kind of hanging device for floppy disc driver of claim 1 or 2 records, it is characterized in that: an above-mentioned side's plate constitutes above-mentioned elongated base plate together with above-mentioned the opposing party's plate.
4, a kind of hanging device for floppy disc driver of putting down in writing according to claim 3, it is characterized in that: have rigid section with above-mentioned loading plate and be bearing in spring members on the above-mentioned back up pad device, one end of above-mentioned spring members overlaps the end of above-mentioned rigid section and gives fixingly, and the other end of above-mentioned spring members overlaps the end of above-mentioned elongated base plate and gives fixing.
5, a kind of hanging device for floppy disc driver of putting down in writing according to claim 3, it is characterized in that: above-mentioned loading plate have rigid section and with rigid section flexibly be bearing on the above-mentioned back up pad device spring portion and be made of one with a plate, the end of above-mentioned loading plate overlaps the end of above-mentioned elongated base plate and gives fixing.
6, according to a kind of hanging device for floppy disc driver of claim 1 or 2 records, it is characterized in that: an above-mentioned side's plate and above-mentioned loading plate are made of one, and above-mentioned the opposing party's plate constitutes above-mentioned elongated base plate.
7, according to a kind of hanging device for floppy disc driver of any one record in the claim 1～3, it is characterized in that: above-mentioned rigid section flexibly is bearing in spring portion on the above-mentioned back up pad device and an above-mentioned side's plate is made of one, the end of above-mentioned loading plate overlaps the end of above-mentioned spring portion and gives fixing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP200134480 | 2001-02-09 | ||
| JP2001034480A JP4297313B2 (en) | 2000-10-30 | 2001-02-09 | Disk drive suspension |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1372248A true CN1372248A (en) | 2002-10-02 |
| CN1226719C CN1226719C (en) | 2005-11-09 |
Family
ID=18898078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02103550 Expired - Lifetime CN1226719C (en) | 2001-02-09 | 2002-02-07 | Hanging device for floppy disc driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1226719C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105976833A (en) * | 2015-03-13 | 2016-09-28 | Tdk株式会社 | Head assembly and magnetic disk device |
-
2002
- 2002-02-07 CN CN 02103550 patent/CN1226719C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105976833A (en) * | 2015-03-13 | 2016-09-28 | Tdk株式会社 | Head assembly and magnetic disk device |
| CN105976833B (en) * | 2015-03-13 | 2019-04-09 | Tdk株式会社 | Head stack and disk set |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1226719C (en) | 2005-11-09 |
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