JPH09331178A - Plastic case with shielding function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plastic care with shielding function which is used for a movable communication outdoor base station, high in electromagnetic shielding properties, and having an open-close mechanism free from troubles and component parts easily disassembled and reusable. SOLUTION: A metallic case 20 is covered with a resin molded cover 10 to form a case. A flange 11 L-shaped in cross section is formed on the periphery of the lower edge of the resin molded cover 10, and a metallic shield case 30 is fitted into the resin molded cover 10 in a detachable manner coming into close contact with the cover 10. A waterproof packing 22 is fitted to the opening edge 21 of the metallic case 29 coming into close contact with the flange 11, whereby the metallic shield case 30 can be ensured of waterproofness. A springy metal holder 40 is fixed to the inside of the metallic case 20. The lower edge of the metallic shield case 39 is put into the holder 40 which pinches the lower end of the metallic shield case 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing for electronic equipment, and more particularly to a plastic housing with a shielding function for electronic equipment made of synthetic resin used as a mobile communication outdoor base station.

[0002]

2. Description of the Related Art The housing of an electronic device, especially an outdoor base station for mobile communication, is required to have high waterproofness, has a shielding effect against electromagnetic waves from outside, and emits from inside the housing in a densely populated area. It is required to shield the electromagnetic waves. Conventionally, as a housing for such an outdoor base station for mobile communication, there has been one proposed in Japanese Patent Application Laid-Open No. Hei 276/296.

[0003] This housing is shown in FIGS. 7 is a front view of the housing, FIG. 8 is an exploded perspective view of the housing, and FIG.
FIG. 10 is a sectional view taken along the line BB in FIG. 8, FIG.
Shows a partially enlarged sectional view. In these figures, 111
Is a resin molded cover, 117 is a resin molded base, and the inner wall 131 of the resin molded cover 111 and the resin molded base 1 are provided.
The inner wall 130 of 17 is plated. Reference numeral 102 denotes a shield ring having a metal mesh disposed around the rubber ring or the like, and reference numeral 108 denotes a rubber O-ring for waterproofing.

The shield ring 102 is mounted on a groove 111d formed on a resin molded cover 111, and the O-ring 108 is mounted on a groove 117h formed on a resin molded base 117. The resin molded cover 111 and the resin molded base 117 are connected to each other. When combined, the structure is such that the shield ring 102 and the resin molded cover 111 are crushed. In addition, the shield ring 102 has substantially eliminated the potential difference between the resin molded cover 111 and the resin molded base 117 by plating applied to the resin molded cover 111 and the resin molded base 117, and the O-ring 108 has waterproofness. ing.

[0005]

However, in the conventional housing, it is impossible to fix the shield ring (generally, the adhesive is not conductive). Was something. In addition, since a resin molded product plated is used, it is impossible to separate the resin material from the metal component of the plating, and the disassembly of the component is poor.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has an opening / closing mechanism which has a high electromagnetic shielding property and has no inconvenience in opening / closing. It is an object of the present invention to provide a plastic housing with a shielding function capable of performing the following.

[0007]

In order to achieve the above object, a plastic housing with a shielding function of the present invention comprises a molded resin cover, a metal shield cover removably fitted and fixed to the molded resin cover, A metal case to be covered with a molded resin cover, a waterproof packing provided at an open end of the metal case to adhere to the molded resin cover to ensure waterproofness, and a metal to be provided on the inner surface of the metal case and sandwiching the metal shield cover. And a sex holder.

[0008] Preferably, the holder has a structure in which two metal plates having a "-" shape and having spring properties are combined,
Further, a guide for guiding the holder to the metal shield cover is provided. Further, preferably, an "L" -shaped collar is formed on the molded resin cover, a hinge is provided on the metal case, and the collar is rotated while contacting the hinge with the hinge to cover the molded resin cover on the metal case. There is.

According to the plastic casing with a shielding function of the present invention having the above structure, the metal shield cover fixed inside the molded resin cover comes into contact with the metal case via the holder when the resin cover is closed. , Enhances the electromagnetic shielding properties and enables the opening and closing function. In addition, a waterproof packing provided outside the metal shield cover and the holder ensures waterproofness. Further, since the molded resin cover and the metal shield cover fixed inside are separate components, they can be easily separated from the molded resin cover, and are excellent in disassembly.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a plastic housing with a shielding function according to the present invention will be described with reference to the drawings. 1 is a right perspective view of a plastic housing with a shielding function, FIG. 2 is a left perspective view of the plastic housing with a shielding function, FIG. 3 is an exploded perspective view of the plastic housing with a shielding function,
4 is a cross-sectional view taken along line AA in FIG. 3, FIG. 5 is an enlarged view of a portion B in FIG. 4, and FIG. 6 is a cross-sectional view of an assembling process of a plastic housing with a shielding function. In these figures, reference numeral 10 denotes a resin molded cover, and reference numeral 20 denotes a metal case. The housing is formed by covering the metal case 20 with the resin molded cover 10 attached thereto. A flange 11 having an L-shaped cross section is formed around the lower end of the resin molded cover 10.
A metal shield case 30 is detachably fitted and fixed to the inside of the housing 0 with its lower end protruding in a state of being substantially in close contact.

A waterproof packing 22 is attached to the open end 21 of the metal case 20, and the waterproof packing 22 adheres to the collar 11 to ensure waterproofness. In addition, a holder 40 made of metal and having a spring property is provided in the vicinity of the upper end of the facing inner surface of the metal case 20.
Are fixed via an “L” -shaped mounting member 23 made of metal. The holder 40 is formed by combining two substantially “C” -shaped metal plates 41 having a spring property so that an upper portion thereof can freely contact and separate, and the lower end of the metal shield case 30 enters. The lower end of the metal shield case 30 that has entered is sandwiched.

A guide 42 is formed at the tip of the metal plate 41 and extends outward to guide the lower end of the metal shield case 30. Further, two hinges 50 are fixed to one of the outer surfaces of the metal case 20, and the hinge 50 has an "L" -shaped rotating plate 52 centered on a shaft 51.
Is rotatable. On the outer surface opposite to the outer surface to which the hinge 50 is fixed, two lid stoppers 60 are provided.
Can be fixed to the metal cover 20.

In order to assemble the above-mentioned plastic housing with functions, first, as shown in FIG. 6, the inner surface of the collar 11 is brought into contact with the outer surface of the hinge 50, and the shaft 51 is moved.
Is rotated in the X direction in the figure. Then, first, the side wall 31 of the metal shield case 30 on the holder 40 side.
Is brought into contact with the holder 40 while being guided by the guide 42 while deforming the metal plate 41. Then, when the metal plate 41 is further rotated, the side wall 32 on the opposite side comes into contact with the other holder 40 and is guided by the guide 42 to enter the metal plate 41 while deforming it.

Thus, the metal shield case 30 is held by the holder 40. Then, the resin molded cover 10 is fixed to the metal cover 20 by the lid stopper 60, the metal shield case 30 is fixed, and the plastic housing with a shielding function is completed with the lower surface of the collar 11 being in close contact with the waterproof packing 22. I do.

[0015]

As described above, the plastic housing with a shielding function of the present invention can smoothly and reliably open and close while ensuring high shielding performance.
Since the metal shield case can be easily separated from the molded resin cover, resources can be effectively reused.

[Brief description of drawings]

FIG. 1 is a right perspective view of an embodiment of a plastic housing with a shield function of the present invention.

FIG. 2 is a left perspective view of an embodiment of the plastic housing with a shield function of the present invention.

FIG. 3 is an exploded perspective view of one embodiment of a plastic housing with a shield function of the present invention.

FIG. 4 is a sectional view taken along line AA in FIG.

FIG. 5 is an enlarged view of a portion B in FIG. 4;

FIG. 6 is a sectional view showing an assembling process of an embodiment of the plastic housing with a shield function of the present invention.

FIG. 7 shows a front view of a conventional housing.

FIG. 8 shows an exploded perspective view of a conventional housing.

FIG. 9 is a sectional view taken along line AA in FIG. 7;

FIG. 10 is a sectional view taken along line BB in FIG. 7;

FIG. 11 shows a partially enlarged sectional view of a conventional housing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Molded resin cover 11 Collar 20 Metal case 22 Waterproof packing 30 Metal shield case 40 Holder 41 Metal plate 42 Guide 50 Hinge 60 Lid stopper

Claims (4)

[Claims] 1. A molded resin cover, a metal shield cover removably fitted and fixed to the molded resin cover, a metal case covered with the molded resin cover, and a molded resin provided at an open end of the metal case. A plastic housing with a shielding function, comprising: a waterproof packing that adheres to a cover to ensure waterproofness; and a metal holder provided on an inner surface of a metal case and holding a metal shield cover. 2. The plastic housing with a shield function according to claim 1, wherein the holder is formed by combining two “C” -shaped metal plates having spring properties. 3. The plastic housing with a shield function according to claim 1, wherein the holder is provided with a guide for guiding a metal shield cover. 4. An L-shaped flange is formed on a molded resin cover, a hinge is provided on a metal case, and the flange is rotated while abutting the hinge to cover the molded resin cover on the metal case. The plastic housing with a shielding function according to claim 1, wherein