JP2002074896A - Card type driving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a card type driving device which can assure large bonding strength with an adhesive sheet, and exhibits an excellent dust-proofing action by the adhesive sheet. SOLUTION: A cover 2 to cover the outer surface of a chassis 1 is attached on the chassis 1. Adhering surfaces 22a and 22b at the side of the cover 2 formed over the whole peripheral edge part of the cover 2 and an adhering surface 12 at the side of the chassis 1 formed over the whole peripheral edge part of the chassis 1 are adhered by using the adhesive sheet 3. A projected line 23 is formed on the adhering surfaces 22a and 22b at the side of the cover 2, a recessed line 13 is formed on the adhering surface 12 at the side of the chassis 1, and then the projected line 23 and recessed line 13 are fitted. The adhesive sheet 3 which sticks the adhering surfaces 22a and 22b at the side of the cover 2 to the adhering surface 12 at the side of the chassis 1, sticks the recessed line 13 to the projected line 23 also in the fitting part of the recessed line 13 and the projected line 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a card-type drive device.

[0002]

2. Description of the Related Art In a card-type drive device having a built-in hard disk, a wiring board on which electric components such as motors and electronic components such as ICs (hereinafter referred to as "electrical and electronic components") are mounted is superposed on a metal chassis. And the front outer surface of the chassis is covered by a front cover,
The outer surface on the back side of the chassis is covered by a back cover. Each of the front cover and the back cover has a cover-side sticking surface over the entire outer peripheral edge thereof, and the cover-side sticking surface is formed over the entire outer peripheral edge of the chassis. It is attached to the chassis-side attachment surface using an adhesive sheet. In such a card type drive device,
Since the adhesive sheet is attached to the entire cover-side attaching surface and the entire chassis-side attaching surface, dust can be prevented from being covered by the front and back covers, so that electrical and electronic components can be removed from dust. Protected.

FIG. 7 is an enlarged view showing a portion where a chassis 1 and a cover (a front cover or a back cover) 2 used in a conventional card type drive device are adhered. As shown in FIG. 1, in the conventional card-type drive device, a flat chassis-side sticking surface 12 formed over the entire outer periphery of the chassis 1 and a flat surface formed over the entire outer periphery of the cover 2. The cover-side attachment surface 22 is attached using the adhesive sheet 3.

[0004] Japanese Utility Model Publication No. 3045042 discloses a technique for firmly attaching an upper cover and a lower cover of a card-shaped device.

[0005]

As in the above-mentioned conventional card-type drive device, the chassis-side sticking surface 12
If the cover-side sticking surface 22 is flat, the bonding strength of the adhesive sheet 3 cannot be secured so large. Therefore, the cover-side sticking surface 22 may be attached to the chassis due to various factors such as deformation of the cover. There is a possibility that the adhesive sheet 3 may be locally lifted from the side sticking surface 12. If such a situation occurs, a gap is generated between the cover side sticking surface 22 and the chassis side sticking surface 12, and dust is prevented by the adhesive sheet 3. Action may be impaired. Also, the chassis-side sticking surface 12
If the cover-side sticking surface 22 is a flat surface, the adhesive sheet 3
It is difficult to properly position the cover-side sticking surface 22 and the chassis-side sticking surface 12 when sticking the cover-side sticking surface 22 and the chassis-side sticking surface 12 using However, this is also a factor that reduces workability.

[0006] Such a situation corresponds to the actual climbing 304
The technique described in Japanese Patent No. 5042 cannot solve the problem at all.

[0007] The present invention has been made in view of the above, and despite the fact that the chassis-side bonding surface and the cover-side bonding surface are bonded using an adhesive sheet in the same manner as in the past, the chassis side is bonded. Card type that eliminates the risk of creating a gap between the sticking surface and the cover-side sticking surface, and at the same time can secure a large bonding strength with the adhesive sheet, and at the same time, exhibits excellent dust-proof action by the adhesive sheet. It is an object to provide a drive device.

[0008]

According to the present invention, there is provided a card-type drive device in which a cover for covering an outer surface of the chassis is attached to a chassis in which wiring boards on which electric and electronic components are mounted are arranged in an overlapping manner. The cover-side sticking surface formed over the entire outer peripheral portion of the cover and the chassis-side sticking surface formed over the entire outer peripheral portion of the chassis are attached using an adhesive sheet. ing.
In this regard, the card-type drive device according to the present invention is on the same track as the conventional one.

In the present invention, one of the cover-side adhering surface and the chassis-side adhering surface has an annular groove formed on one side thereof, and the other has a convex line fitted on the concave ring formed on the other side. And the adhesive sheet adhered to the cover-side attaching surface and the chassis-side attaching surface, the concave and convex ridges at the fitting points of the concave and convex ridges. It is stuck.

[0010] According to this, the adhesive sheet is attached to the concave and convex ridges at the place where the concave and convex ridges are fitted, so that the adhesive sheet is attached to the flat surface as in the past. The bonding area of the bonding sheet is increased as compared with the case where the bonding is performed, and the bonding strength is improved accordingly. For this reason, it is less likely that the cover-side sticking surface locally rises from the chassis-side sticking surface and a gap is formed there. In addition, even if the cover-side sticking surface is locally lifted from the chassis-side sticking surface, the cover-side sticking surface and the chassis-side sticking surface are not removed unless the convex streak completely comes out of the concave streak. Since no gaps are formed in the space, a highly reliable and high dustproof action is exhibited. Furthermore, since the chassis and the cover are accurately positioned just by fitting the concave and convex ridges, workability when assembling the cover to the chassis is improved.

In the present invention, it is desirable that a concave streak is formed on the chassis-side sticking surface and a convex streak is formed on the cover-side sticking surface. In such a case, the metal material is cut out. When manufacturing a chassis, it is possible to easily form a concave streak on the chassis-side attachment surface, and the manufacturing cost is accordingly reduced. In addition, the step of forming the ridges on the cover-side attachment surface can be performed at the same time when the cover is manufactured by pressing the metal plate, so that the manufacturing cost of the cover is reduced.

[0012] It is possible to adopt a configuration in which the cover comprises a front cover that covers the front outer surface of the chassis and a back cover that covers the rear outer surface of the chassis. It was also used in the type drive device.

In the present invention, it is preferable that the width of the recess is narrower as the distance from the bottom wall surface of the recess is increased, and that the protrusion is fitted to the recess in a state of being prevented from being removed. With this configuration, when the concave and convex ridges are fitted, not only the chassis and the cover are accurately positioned, but also the cover is held so that the cover does not easily fall off the chassis. The workability when assembling the cover to the vehicle is further improved.

[0014]

FIG. 1 is a schematic perspective view showing an embodiment of a card type drive device according to the present invention. In the figure, 1 is a chassis, 2 is a cover, 4 is a multi-pole connector attached to the front end of the chassis 1, and this multi-pole connector 4 is a wiring board (non- (Not shown). And
On the wiring board, necessary electric and electronic parts such as a motor as an electric part for rotating a hard disk disposed on the front side of the chassis 1 and an electronic part for controlling the motor and the pickup are mounted. .

FIG. 2 is an exploded perspective view of the card type drive device of FIG. As can be seen in the figure, the cover 2 is divided into a front cover 2 a that covers the front outer surface of the chassis 1 and a back cover 2 b that covers the rear outer surface of the chassis 1. Also,
The chassis-side sticking surface 12 is formed in a rectangular ring shape over the entire outer peripheral edge of the front and back surfaces of the chassis 1, and the cover-side sticking surface is formed over the entire outer peripheral edge of the front cover 2a and the back cover 2b. 22a and 22b are formed in a rectangular ring shape. In FIG. 1, reference numeral 3 denotes an adhesive sheet formed in a rectangular ring shape, and two adhesive sheets 3 are required.

FIG. 3 is an enlarged sectional view of the main parts of the chassis 1, the front cover 2a and the adhesive sheet 3. As shown in the figure, the chassis-side sticking surface 12 includes a concave stripe 13 and flat surfaces 14 on both sides thereof. Also, front cover 2
The cover-side adhering surface 22a of FIG. 1A includes a ridge 23 formed by press working and flat surfaces 24, 24 on both sides thereof. Then, as shown in FIG.
2 a and the chassis-side bonding surface 12 are bonded to one adhesive sheet 3. Specifically, the flat surfaces 24, 24 of the cover-side bonding surface 22a and the flat surface 1 of the chassis-side bonding surface 12
4 and 14 are adhered to the adhesive sheet 3, and the adhesive sheet 3 is adhered to the concave ridges 13 and the convex ridges 23 at the fitting positions of the concave ridges 13 and the convex ridges 23. I have. Here, the joint structure between the front cover 2a and the chassis 1 has been described. However, as can be seen in FIG. 4, the joint structure between the back cover 2b and the chassis 1 has the same configuration.
Note that, with respect to the joint between the back cover 2b and the chassis 1, the same elements as those described for the joint between the front cover 2a and the chassis 1 are denoted by the same reference numerals.

In the case described with reference to FIG. 4, although the groove width of the concave streak 13 is the same everywhere in the depth direction,
This point is that, as in the example shown in FIG. 5, the groove width of the concave streak 13 becomes narrower as the distance from the bottom wall surface of the concave streak 13 increases. 23 may be fitted. Further, as in the case shown in FIG.
The concave ridge 13 may be formed in a V-groove shape, and the convex ridge 23 may be formed in a V-shape.

According to each of the cases described above, the adhesive sheet 3 is provided at the place where the concave ridge 13 and the convex ridge 23 are fitted.
3 and the ridge 23, compared to a conventional case where an adhesive sheet is adhered to a flat surface,
The bonding area of the bonding sheet 3 increases, and the bonding strength improves accordingly. Therefore, the cover-side sticking surfaces 22, 22
It is unlikely that a and 22b locally rise from the chassis-side sticking surface 12 to form a gap there. Also, if the cover-side sticking surfaces 22, 22a, 22b
Even if the surface is locally lifted from the chassis-side bonding surface 12, the gap between the cover-side bonding surfaces 22, 22 a, and 22 b and the chassis-side bonding surface 12 is provided as long as the ridges 23 do not completely come out of the concave ridges 13. Since no gaps are formed in the space, a highly reliable and high dustproof action is exhibited. Furthermore, the concave stripe 13
Since the chassis 1 and the cover 2 are accurately positioned only by fitting the protrusions 23 with the ridges 23, the workability when assembling the cover 2 to the chassis 1 is improved.

In particular, as described with reference to FIG.
However, the width becomes narrower as the distance from the bottom wall surface of the concave stripe 13 increases, and when the convex stripe 23 is fitted in the concave stripe 13 in a retaining state, the concave stripe 13 and the convex stripe 23 are fitted. By doing so, not only the chassis 1 and the cover 2 are accurately positioned, but also the cover 2 is held so as not to easily fall off the chassis 1, so that the workability when assembling the cover 2 to the chassis 1 is further improved. I do.

[0020]

As described above, according to the present invention, one of the cover-side sticking surface and the chassis-side sticking surface is annularly formed on one side and the other is annularly formed on the other side. The ridge is
Because they are stuck to the adhesive sheet at those fitting points,
A gap is created between the chassis-side sticking surface and the cover-side sticking surface even though the chassis-side sticking surface and the cover-side sticking surface are stuck with an adhesive sheet as in the past. In addition to eliminating the fear, the excellent dustproof effect of the adhesive sheet can be exhibited, and also the adhesive sheet can ensure a large bonding strength.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing an embodiment of a card type drive device according to the present invention.

FIG. 2 is an exploded perspective view of the card-type drive device of FIG.

FIG. 3 is an enlarged cross-sectional view of main parts of a chassis, a front cover, and an adhesive sheet.

FIG. 4 is an enlarged cross-sectional view of a joint portion between a chassis, a front cover, and an adhesive sheet.

FIG. 5 is an enlarged sectional view of a joint portion between a chassis, a cover, and an adhesive sheet according to a modified example.

FIG. 6 is an enlarged cross-sectional view of a joint between a chassis, a cover, and an adhesive sheet according to another modification.

FIG. 7 is an enlarged cross-sectional view of a joint portion between a chassis, a cover, and an adhesive sheet of a conventional card-type drive device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chassis 2, 2a, 2b Cover 3 Adhesive sheet 12 Chassis side sticking surface 13 Concave streak 22, 22a Cover side sticking surface 23 Convex streak

Claims (4)

[Claims] A cover, which covers an outer surface of the chassis, is mounted on a chassis on which wiring boards on which electric and electronic components are mounted are arranged in an overlapping manner, and is formed over the entire outer peripheral edge of the cover. A card-side drive device in which a cover-side sticking surface and a chassis-side sticking surface formed over the entire outer peripheral edge of the chassis are stuck together using an adhesive sheet; A concave streak is formed on one side of the chassis-side sticking surface in a ring shape, and a convex streak fitted in the concave streak is formed in the other side in a ring shape. A card-type drive, wherein the adhesive sheet attached to an attaching surface is attached to the concave and convex ridges at a fitting position of the concave and convex ridges. apparatus. 2. The card-type drive device according to claim 1, wherein a concave stripe is formed on the chassis-side sticking surface, and a convex stripe is formed on the cover-side sticking surface. 3. The card-type drive device according to claim 1, wherein the cover comprises a front cover that covers the front outer surface of the chassis and a back cover that covers the rear outer surface of the chassis. 4. The method according to claim 1, wherein the width of the concave is narrower as the distance from the bottom wall surface of the concave is reduced, and the convex is fitted to the concave in a state of being prevented from being removed. A card-type drive device according to any one of the above.