JP2002353651A - Precision equipment housing case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a precision equipment housing case that can surely hermetically seal precision equipment without using any rubber-made sealing member. SOLUTION: The precision equipment 1 is hermetically sealed by closely adhering the bottom section 13b of a recessed groove 13 formed on a lid body 12 to the hermetically sealing surface 11a of the main body 11 of this housing case by press-contacting the bottom section 13b with the surface 11a. Since no rubber-made sealing member nor adhesive is required, the contamination caused by gas components volatized from a rubber-made sealing member and adhesive does not occur. Since the bottom section 13a is formed to have a thin thickness so that the section 13a may be deformed elastically, the hermetically sealed degree of the equipment 1 can be improved by surely closely adhering the bottom section 13a to the hermetically sealing surface 11a of the main body 11. Since the recessed groove 13 of the lid body 12 can be press-formed integrally with the lid 12 in addition to the disuse of any sealing member, adhesive, etc., the manufacturing cost of this housing case 10 can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a case for accommodating and sealing a precision device such as an electronic device or an information device therein, and more particularly to a case where a precision device can be sealed without using a rubber seal member. The present invention relates to an improved precision instrument storage case.

[0002]

2. Description of the Related Art Precision equipment, such as electronic equipment and information equipment, is highly likely to cause functional failure when foreign substances such as moisture, dust, and various floating gases contained in the air enter the interior. Therefore, these precision instruments need to be housed inside the storage case and sealed, and protected from contact with foreign substances existing in the outside world.

An example of a storage case used for sealing such precision equipment will be described with reference to FIGS. 5 to 7. A hard disk drive (HD) which is a storage device of a computer will be described.
D) The storage case 2 for storing 1 includes a case main body 3 for storing the HDD 1 therein, and a lid 5 attached to the case main body 3 by a plurality of screws 4. A rubber seal member 6 extending continuously along the outer periphery of the HDD 1 is interposed between the case body 3 and the lid 5 to seal a gap between the case body 3 and the lid 5. ing.

As shown in FIG. 7A, the sealing member 6 has a rubber member 6b attached to a bone 6a as shown in FIG.
As shown in FIG. 7B, a rubber material 6c is adhered to the back surface of the lid 5 with an adhesive 6d, or as shown in FIG. Vulcanized adhesive.

[0005]

By the way, in the HDD which is a storage device of a computer, the recording density and the accuracy have been further improved, and the gap between the magnetic disk and the magnetic head has become extremely narrow. ing. As a result, the attachment of foreign matter to a magnetic disk or a magnetic head leads to a fatal obstacle, so that management of contamination (contamination) has become even more important.

At this time, in the conventional storage case 2 for sealing the HDD 1, the rubber members 6b, 6
Gas components (outgas) volatilized from c, 6e, the adhesive 6d, and the like may cause contamination.

The above-mentioned conventional sealing member 6 is formed by molding a rubber material 6b on a bone 6a or by bonding a rubber material 6c to an adhesive 6a.
Since the structure is such that it is bonded to the lid 5 using d, the manufacturing cost is high. Further, since the rubber material 6e penetrates the lid 5, there is a problem that the appearance of the storage case 2 is deteriorated.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the prior art and to provide a precision instrument storage case capable of securely sealing precision instruments without using a rubber seal member. is there.

[0009]

A precision instrument storage case according to the present invention for solving the above-mentioned problems includes a case body for accommodating precision instruments therein, and a case body attached to the case body when the case is attached to the case body. A thin metal lid for sealing the precision instrument. The lid has a concave groove integrally formed so as to extend continuously around the precision instrument. Furthermore, when the lid is attached to the case main body, the concave groove is pressed against the surface of the case main body, elastically deforms and adheres to the surface, and has a bottom formed thinner than a general portion of the lid. Have. Preferably, a reinforcing bead is provided on the lid continuously extending adjacent to the concave groove.

In other words, the precision instrument storage case of the present invention has a structure in which the precision instrument is sealed by pressing the bottom of the concave groove provided in the lid against the surface of the case body to tightly seal the precision instrument. No components or adhesives are required, and therefore no contamination due to gas components volatilized from the rubber material or the adhesive is generated. In addition, since the bottom of the groove is formed to be thin so as to be elastically deformable, the bottom of the groove can be securely brought into close contact with the surface of the case body, and the degree of sealing can be increased. Further, in addition to the fact that a rubber seal member and an adhesive are not required, the concave groove provided in the lid can be integrally press-molded, so that the manufacturing cost of the storage case can be reduced. Further, since the space required for disposing the concave groove is smaller than the space for disposing the rubber seal member, the storage case can be downsized. When the lid and the case body are formed of a conductive metal material, they can be electrically connected to each other through the concave groove, and the gap between them can be electromagnetically sealed. By enhancing the electromagnetic shielding effect of the case, malfunction of precision equipment due to external noise can be prevented.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A precision instrument storage case according to an embodiment of the present invention will be described below in detail with reference to FIGS.

A precision instrument storage case 10 of this embodiment shown in FIGS. 1 and 2 is for storing and sealing a hard disk drive (HDD) 1 which is a storage device of a computer, and stores the HDD 1 therein. And a lid 12 attached to the case main body 11 and sealing the HDD 1.

The lid 12 is formed by press-forming a thin plate made of a conductive metal such as an aluminum plate, and has a single groove 13 extending continuously around the HDD 1. This groove 1
Reference numeral 3 denotes a member which is integrally press-formed when the cover 12 is press-formed. As shown in FIG. 3, the cover 3 projects in a convex shape toward the sealing surface 11 a of the case body 11.

The groove 13 has a base portion 13a having a thickness equal to the thickness t1 of the general portion 12a of the lid 12, but a bottom portion 13b having a thickness t2 equal to the thickness of the general portion 12a of the lid 12. It is sufficiently thin compared to t1. Specifically, while the thickness of the general portion 12a of the lid 12 is 0.5 to 1.0 mm, the thickness of the bottom 13b of the concave groove 13 is 0.1 mm.
Millimeters.

Further, the bottom portion 13b of the concave groove 13 protrudes toward the case main body 11 by an amount corresponding to the seal margin with respect to the sealing surface 12b of the lid 12 which is in close contact with the sealing surface 11a of the case main body 11.

In addition, the cover 12 is provided with a reinforcing bead 14 extending continuously adjacent to the concave groove 13.

As shown in FIG. 4, when the lid 12 having the above-described structure is attached to the case main body 11 using the screws 4, the sealing surface 12b of the lid 12 comes into close contact with the sealing surface 11a of the case main body 11. . At this time, since the tightening force of the screw 4 is transmitted to the groove 13 via the reinforcing bead 14, the bottom 13 b of the groove 13 is pressed against the sealing surface 11 a of the case body 11. Then, the bottom 13b of the groove 13 is elastically deformed as shown in FIG.
a, the H stored inside the case body 11
The DD 1 can be securely sealed by the lid 12.

Therefore, according to the precision instrument storage case 10 of the present embodiment, the HDD 1 can be sealed inside the case main body 11 without using a rubber seal member or an adhesive. As described above, contamination due to a gas component volatilized from a rubber seal member, an adhesive, or the like occurs, and moisture and various floating gases contained in the atmosphere penetrate through the rubber seal member to form the case main body 11. Does not penetrate inside.

Further, the precision instrument storage case 1 of the present embodiment
In the case of No. 0, in addition to the fact that a rubber sealing member and an adhesive are not required, the concave groove 13 provided in the lid 12 can be integrally press-molded, so that the manufacturing cost of the storage case 10 is greatly reduced. can do.

Further, since the space required for disposing the concave groove 13 is smaller than the space for disposing the rubber seal member, the size of the storage case 10 can be reduced.

Further, the case main body 11 and the lid 12 made of a conductive metal material can be electrically connected to each other through the concave groove 13 and the gap between them can be electromagnetically sealed. The electromagnetic shielding effect of the storage case 10 can be enhanced to prevent a malfunction of the HDD 1 due to external noise.

As described above, the precision instrument storage case according to one embodiment of the present invention has been described in detail. However, it is needless to say that the present invention is not limited to the above embodiment, and various modifications are possible. For example, in the above-described embodiment, only one concave groove 13 is formed in the lid 12, but a pair of inner and outer two concave grooves are formed in the lid 12, so that the sealing location is doubled. Can be.

[0023]

As is apparent from the above description, the precision instrument storage case of the present invention seals the precision instrument by pressing the bottom of the concave groove provided on the lid against the surface of the case body and closely contacting it. The structure does not require a rubber seal member or an adhesive, and therefore does not cause contamination due to gas components volatilized from the rubber material or the adhesive. Further, since the bottom of the groove is formed to be thin and elastically deformable, the bottom of the groove can be securely brought into close contact with the surface of the case main body, and the degree of sealing can be increased. Also,
In addition to the fact that no sealing member or adhesive is required, the concave groove provided on the lid can be integrally press-molded,
The manufacturing cost of the storage case can be reduced. Further, since the space required for disposing the concave groove is smaller than the space for disposing the rubber seal member, the storage case can be downsized. When the lid and the case body are made of a conductive metal material, they can be electrically connected to each other through the concave groove, and the gap between them can be electromagnetically sealed. By enhancing the electromagnetic shielding effect of the case, malfunction of precision equipment due to external noise can be prevented.

[Brief description of the drawings]

FIG. 1 is a plan view showing a precision instrument storage case according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II shown in FIG.

FIG. 3 is an enlarged sectional view of a main part showing a state before a lid is attached to a case main body.

FIG. 4 is an enlarged sectional view of a main part showing a state where a lid is attached to a case main body.

FIG. 5 is a plan view showing a conventional precision instrument storage case.

FIG. 6 is a sectional view taken along the line VI-VI shown in FIG. 5;

FIG. 7 is a sectional view of a conventional rubber seal member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Precision equipment 2 Storage case 3 Case main body 4 Screw 5 Lid 6 Seal member 10 Precision equipment storage case of one Embodiment which concerns on this invention 11 Case main body 11a Sealing surface 12 Lid 12a General part 12b Adhesion surface 13 Depression groove 13a Base 13b Bottom 14 Reinforcement bead

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H05K 5/06 H05K 5/06 A F term (Reference) 4E360 AA02 AB13 AB33 AB44 BA08 BC06 EA29 ED02 ED23 FA08 FA09 GA22 GA29 GA30 GA34 GB43 GC14

Claims (2)

[Claims] 1. A case body for accommodating precision equipment therein, and a thin metal cover for sealing the precision equipment inside the case body when attached to the case body, wherein the lid is A concave groove integrally press-formed so as to extend continuously around the precision instrument, and the concave groove is pressed against a surface of the case main body when the lid is attached to the case main body. A precision instrument storage case, characterized in that the case has a bottom portion formed thinner than a general portion of the lid and elastically deformed and closely attached to the surface. 2. The precision instrument storage case according to claim 1, wherein the lid has a reinforcing bead continuously extending adjacent to the concave groove.