WO2000005152A1

WO2000005152A1 - Hard disk drive head tray

Info

Publication number: WO2000005152A1
Application number: PCT/JP1999/003869
Authority: WO
Inventors: Nobuo Egami
Original assignee: Egami Chemical Co., Ltd.; Nissho Corporation; Matsushita-Kotobuki Electronics Industries Ltd.
Priority date: 1998-07-22
Filing date: 1999-07-16
Publication date: 2000-02-03
Also published as: CN1120792C; TW401368B; CN1274331A; JP2000033989A; JP2990164B1; KR20010024012A; MY133184A

Abstract

A tray for holding and carrying multiple HDD heads. On the surface of a positioning section (12, 15), the tray (10) has fine projections facing places where HDD heads (30) are set. An example of the fine projection is a hemispheric projection (20) having a height (several 100 νm) a little larger than the thickness of a wiring (34). Another example is a linear projection (21) of several 100 νm in width and several mm in length. This constitution allows the wiring section of the HDD heads (30) to touch the positioning section (12, 15) of the tray (10) only at the fine projections (20, 21), thus making friction between the two small sufficiently. Therefore, it is ensured those problems such as damage to and cut of the wiring (34) due to friction is prevented.

Description

Description Hard disk drive head tray Technical field

The present invention relates to a tray used for transporting a head (hereinafter, referred to as an HDD head) used for a hard disk drive (HDD). Background art

The HDD head is a thin plate-shaped precision part with a length of several centimeters, and is composed of a magnetic head (for reading and writing), a fixed part, and a suspension arm. The suspension arm connects the read / write head and the fixed part, and its surface is finely wired. Since the HDD head is precise and easy to get dirty, handling it roughly may cause problems such as damage to wiring and dirt. For this reason, for example, at the manufacturing site of an HDD head, the HDD head is stored in a dedicated tray (hereinafter simply referred to as a tray) that can store a large number of HDD heads at a time, and cleaning and other operations must be performed in this state. Perform necessary processing. After such processing, a plurality of trays holding HDD heads are stacked and vacuum-packed to avoid the adhesion of dust and the like. The tray vibrates when vacuum-packing the stacked tray assembly or transporting the vacuum-packed tray assembly. When this vibration occurs, the wiring surface of the HDD head rubs against the inner surface of the tray, and the wiring may be damaged or cut off. In order to solve such problems, an object of the present invention is to provide a tray that does not cause damage to the HDD head due to friction as described above. Disclosure of the invention

In order to solve the above problems, the present invention provides a tray for holding a plurality of hard disk drive heads each having a wiring surface, wherein each of the trays has one hard disk drive. A tray having a plurality of positioning portions for holding a hard disk drive head, wherein each positioning portion is provided with a minute projection on a surface of a portion in contact with a wiring surface of the hard disk drive head. Provide a tray. The tray according to the present invention is one in which, among positioning portions for positioning a plurality of HDD heads, minute projections are provided on a surface of a portion that comes into contact with a wiring surface of each HDD head. Examples of the size and shape of the minute protrusion include a hemispherical protrusion having a diameter of about 100 m, a linear protrusion having a width of about 100 / im and a length of about several mm, and the like. There are various things. In the case where the minute projections are linear protrusions, it is preferable that the length direction thereof substantially coincides with the length direction of the positioned HDD head. It is preferable that the minute projections are provided at positions (and directions) such that the minute projections come into contact with the wiring surface in an empty area where no wiring is provided on the wiring surface of the HDD head. According to the tray according to the present invention as described above, since the wiring surface of the HDD head comes into contact with the positioning portion of the tray only at the minute convex portion, the wiring surface of the HDD head is in contact with the wiring surface of the HDD head. The friction between the tray and the positioning portion is sufficiently reduced. Therefore, problems such as wiring damage and disconnection due to friction are reliably prevented. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a perspective view of a tray according to one embodiment of the present invention.

FIG. 2 is a plan view of the tray.

FIG. 3 is a left side view of the tray.

FIG. 4 is a front view of the tray.

FIG. 5 is a bottom view of the tray.

FIG. 6 is a sectional view taken along the line VI-VI of FIG.

FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG.

FIG. 8 is an enlarged view of a portion A in FIG.

Fig. 9 is a view of the same part viewed from the right side.

FIG. 10 is an enlarged view showing a modification of the portion A in FIG.

FIG. 11 is a view of the same part viewed from the right side. FIGS. 12 and 13 are diagrams showing a preferred form of the linear bulge, in which FIG. 12 is an enlarged view showing a portion corresponding to the portion A in FIG. 2, and FIG. It is a view of the same part viewed from the right side.

FIG. 14 is a plan view showing another form of the positioning section.

FIG. 15 is a perspective view showing a tray set including a plurality of trays of FIG. FIG. 16 is a front view of the tray set of FIG.

FIG. 17 is a plan view of a tray according to another embodiment of the present invention.

FIG. 18 is a cross-sectional view taken along line BB of FIG. BEST MODE FOR CARRYING OUT THE INVENTION

Embodiments of the tray according to the present invention will be described below with reference to the drawings. 1 to 5 are views showing a tray according to an embodiment of the present invention, wherein FIG. 1 is a perspective view, FIG. 2 is a plan view, FIG. 3 is a left side view, and FIG. Is a front view, and FIG. 5 is a bottom view. Although not shown, the right side view of the tray 10 appears symmetrically with the left side view, and the rear view of the tray 10 appears symmetrically with the front view.

1 to 5, the tray 10 has a pair of plate portions 12 each having a plurality of positioning pins (hereinafter, referred to as pins) 11 arranged in a row on an upper surface, and a plurality of positioning protrusions. A pair of beams 15 in which 13 and 14 are provided in a row on the upper surface, a plurality of beams 16 orthogonal to and supporting the plate portion 12 and the beams 15, a plate portion 12 and the beams It mainly consists of a frame 17 holding 15 and columns 16. Of these, the pins 11 provided on the plate 12 and the projections 13 and 14 provided on the beam 15 constitute a positioning portion according to the present invention, whereby the HDD head is positioned. The HDD head 30 housed in the tray 10 includes a fixing portion 31 having a screw hole 32 for fixing the HDD head 30 in the hard disk with a screw, and a suspension arm 33. And a magnetic head attached to the tip of the suspension arm 33. When the HDD head 30 is inserted into the screw hole 3 2 through the pin 11 and placed in the tray 10 so that the arm 33 is located between the adjacent protrusions 13 and 14, the HDD head 3 The position of 0 is determined. As can be seen from FIG. 1, each plate section 12 is provided with 12 pins 11, and the entire tray 10 accommodates 24 HDD heads 30. it can.

The structure of the tray 10 holding the HDD head 30 will be described below. 6 and 7, on the back surface of the plate portion 12, cylindrical sleeves 18 are provided in a row. Here, each sleeve 18 is located just behind each pin 11. The sleeve 18 functions to hold the HDD head 30 in cooperation with the pin 11 as described below. First, as described with reference to FIGS. 1 to 5, the tray is placed in the tray 1OA. At this time, the wiring surface of the HDD head 30 is directed downward. After that, the second tray 10B is stacked on the first tray 1OA. In this state, the tip of the pin 11 of the first tray 1OA enters the hole of the sleeve 18 of the second tray 10B, and the tip of the sleeve 10B of the second tray 10B There is a slight gap between the tray 1 and the upper surface of the plate 12 of the OA. Thus, the fixed portion 31 of the HDD head 30 is loosely held from above and below by the plate portion 12 of the first tray 1OA and the sleeve 18 of the second tray 10B, so that the HDD head 30 does not come off.

Fig. 8 is an enlarged view of the portion A in Fig. 2, and Fig. 9 is a view of the same portion as viewed from the right side. 8 and 9, a hemispherical microprojection 20 is formed between the projections 13 and 14 on the upper surface of the beam 15. The diameter (or height) of the minute projection 20 is slightly larger than the thickness of the wiring 34 fixed to the arm 33 of the HDD head 30 (for example, about several hundreds of xm). The minute projection 20 is in contact with the arm 33 in a blank area of the surface of the arm 33 of the HDD head 30 where the wiring 34 does not pass. When the HDD head 30 is held in the tray 10 as shown in FIG. 9, a gap is generated between the arm 33 and the upper surface of the beam 15. Therefore, even if the tray 10 is vibrated when evacuating the tray 10 to vacuum-pack or transport the vacuum-packed tray 10, even if the wiring 34 is vibrated, the wiring 34 will be located on the upper surface of the beam 15 その他No contact with parts.

Note that the shape of the minute projection provided on the beam 15 is not limited to a hemisphere. For example, FIG. 10 and FIG. 11 are diagrams showing another example of the microprojections, of which FIG. 10 is an enlarged view showing a modification of the portion A in FIG. 2, and FIG. 11 is the same. It is the figure which looked at the part from the right side. In this example, the linear ridge 21 is formed on the upper surface of the beam 15. Cleaning bump 21 is formed to extend along the arm 33 of the HDD head 30 arranged on the tray 10 as described above. The height of the linear protrusion 21 is slightly larger than the thickness of the wiring 34. Even in this case, the same effect as in the case of the fine projections 20 can be obtained.

FIGS. 12 and 13 are diagrams showing a preferred form of the linear bulge, in which FIG. 12 is an enlarged view showing a portion corresponding to the portion A in FIG. 2, and FIG. It is a view of the same part viewed from the right side. In the beam 15 of this embodiment, the linear protrusions 21 a and 21 b formed on both sides of the projection 14 are formed so as to extend in symmetric directions. In this way, even if the arm 33 of the HDD head 30 is disposed on either side of the protrusion 14, the linear protrusion 21 a or 21 b is formed in a blank area where the wiring 34 is not provided. Since the arm contacts the arm 33, the degree of freedom in positioning the HDD head 30 increases. In the above example, the HDD head 30 is arranged in the tray 10 so that the arm 33 crosses the beam 15 obliquely, but this is not an essential requirement for the present invention. For example, FIG. 14 is a plan view showing another form of the positioning portion. In this form, a linear ridge 22 parallel to the beam 16 is provided between the projections 13 and 14 of the beam 15. It is formed. Since the pin 11 is located on the extension of the linear ridge 22, the HDD head 30 is orthogonal to the beam 15. Even in this case, the effects described above can be obtained.

FIG. 15 is a perspective view showing a tray assembly 40 including a plurality of (in this example, six) trays 10 (shown in FIG. 1) holding HDD heads (not shown). The plurality of trays 10 are stacked, and a pair of clamps 41 and 42 sandwich both sides thereof. An upper cover 43 and a lower cover 44 are attached to the upper and lower surfaces of the stacked trays, respectively. Such tray assemblies are assembled for convenience in handling and transport.

In this tray assembly 40, the upper cover 43 and the lower cover 44 have the same size and shape, and the upper cover 43 depends on whether it is mounted on the top or bottom of the housing. Or, it is called lower cover. The number of trays included in one tray assembly is determined by the dimensions of the clampers 41 and 42. Therefore, if clamps of different dimensions are used, one tray assembly The number of trays included can be varied arbitrarily.

FIG. 16 is a front view of the stacked trays (viewed from the direction of arrow XIII in FIG. 15). As can be seen from FIG. 16, when a plurality of trays 10 are stacked, the frame 17 of the tray 10 forms the wall surface of the stacked trays, and the plurality of openings 45 are adjacent to each other on the front wall surface. Formed between the two trays 10. Although not shown, an opening 45 is similarly formed on the wall surface on the back surface of the stacked trays. By providing these openings 45, the efficiency of cleaning the HDD head held by the tray assembly 40 is improved as follows. That is, in a cleaning process using cleaning water (for example, pure water), when the tray assembly 40 containing the HDD head is immersed in the flow of the cleaning solution with the upper and lower covers 43, 44 removed. The cleaning liquid flows into the inside of the tray assembly 40 and comes into contact with the HDD head stored therein. At this time, the cleaning liquid flows not only from the top and bottom surfaces of the tray assembly 40 but also from the openings 45 provided on the front and rear walls, so that the cleaning water does not stay in the tray assembly 40. However, the fresh cleaning water always comes into contact with the HDD head, which increases the cleaning efficiency.

FIGS. 17 and 18 are views showing a tray according to another embodiment of the present invention, wherein FIG. 17 is a plan view, and FIG. It is sectional drawing in the XVI I line. In FIGS. 17 and 18, the same reference numerals are used for the same components, and the corresponding description is referred to when describing the components.

17 and 18, in the tray 10 C, in addition to the plate portion 12 and the beam 15, a plurality of pairs 23 and 24 similar to the beam 15 are arranged in a row. A pair of second beams 25 provided in the positioning portion are included in the positioning portion. The second beam 25 is provided for positioning and holding the HDD head having the ring portion 35 at the rear end like the HDD head 30a shown in the figure. In the HDD head 30a shown in the figure, an extension 36 for forming a high-precision electronic circuit is formed. Is easy to accumulate. In consideration of this problem, in the tray 10C, a step 26 is formed on the upper surface of the girder 16 by partially increasing the thickness of the girder 16 supporting the second beam 25 from below. ing. Step The extension 26a of the HDD head 30a contacts the portion 26a. In this way, since the static electricity in the extension portion 36 is discharged to the tray 10C through the step portion 26, the accumulation of the static electricity in the extension portion 36 is reliably prevented. Here, if conductive coating is applied to the surface of the tray 10C, accumulation of static electricity on the HDD head 30a is more reliably prevented. Such a conductive coating can be preferably applied not only to the tray 10C of this embodiment but also to any form of tray according to the present invention.

In addition, the tray 10C is designed as follows to stably store and hold a relatively large head such as the HDD head 30a in FIG. That is, on the bottom surface side of the tray 10C, a beam-like rib 27 is provided between the plate portion 12 and the second beam 25 in parallel with them. When the HDD head 30a is placed at a predetermined position in the tray 10C and another tray 10C is placed on the HDD head 30a, the rib 27 of the upper tray 10C is moved to the HDD head 30a in the lower tray 10C. Lightly touch the rear upper surface of the. By doing so, the movement of the stored HDD head 30a is appropriately suppressed, and wiring damage is less likely to occur.

Claims

The scope of the claims

1. A tray for holding a plurality of hard disk drive heads with wiring surfaces, provided that each of the trays has a plurality of positioning parts for holding one hard disk drive head, and each positioning part has a hard disk drive. A hard disk drive head tray characterized in that minute projections are provided on the surface of the portion in contact with the wiring surface of the head.

2. The minute projections are provided in the housing positioned by the positioning section.

2. The hard disk drive head tray according to claim 1, wherein the tray is in contact with the wiring surface in an empty area of the wiring surface of the drive head where wiring is not provided.

3. The positioning portion has a discharge contact portion that comes into contact with the hard disk drive head in a portion where wiring is not provided and which facilitates discharge of static electricity from a portion where static electricity is easily accumulated. The hard disk drive head tray according to claim 1, wherein:

4. The hard disk drive head tray according to claim 1, wherein a conductive coating is applied.

5. The hard disk drive head tray according to claim 1, further comprising a frame portion for stacking a plurality of trays.

6. The notch is provided in the frame portion, and when a plurality of trays are stacked to form one structure, the notch constitutes an opening for passing a fluid on a side surface of the structure. A hard disk drive head tray according to claim 5, characterized in that: