KR20030059061A - A subrack structure having a filter for intercepting a electromagnetic waves - Google Patents

Abstract

PURPOSE: A subrack structure is provided to prevent damages of external electronic device and electrical components mounted in the subrack structure. CONSTITUTION: A subrack structure comprises a front frame(211) and a center frame(212) arranged at a predetermined gap; a front plate(204) fixed to the upper/lower front frames; a side plate coupled to both ends of the frames; a top plate(201) fixed to the upper front frame and the center frame, and which has an air ventilating hole; a bottom plate fixed to the lower front frame and the center frame; an electromagnetic interference shielding filter(240) interposed between the front frame and the center frame; and a bottom plate(205) and an intermediate plate(206) interposed between the front frame and the center frame.

Description

A subrack structure having a filter for intercepting a electromagnetic waves

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a subrack structure of an electronic communication device employing a shielding filter for shielding electromagnetic waves. A subrack structure employing a shielding filter for shielding electromagnetic waves from above and below.

In general, communication modules such as general-purpose computers, digital switching systems, and large-capacity monitoring and control devices are housed in so-called "subracks" to protect against foreign objects and external shocks.

Referring to FIGS. 1 and 2, which show a conventional subrack 100, this is a top / bottom front frame 110 and 130 on which a front plate 150 on which a power lamp is displayed is fixed, and a motherboard (not shown). Center frame 190 is fixed, and the upper and lower rear frame 120, 140 located on the back side, the side plate 160, the top plate 170 and the bottom plate, The space which can accommodate the circuit board 20 etc. is formed.

Between the upper front frame 110 and the upper rear frame 120 and between the lower front frame 130 and the lower rear frame 140, the guide rail 180 to which the circuit board 20 is slidingly coupled and supported is provided. Combined at regular intervals.

The upper front frame 110 is formed with a fixing hole 111 for fixing the side plate 160, an opening (開口) 112 is formed long in the longitudinal direction on the front, the opening 112 The tab strip 30, which is formed at regular intervals with a screw hole, is coupled to the inside.

The front plate 150 is fixed to the upper / lower front frames 110 and 130 by the fixing bolts 10, and the fixing bolts 10 pass through the front plate 150 to the tab strip 30. The front plate 150 is fixed by being screwed into the screw hole 31 of.

In addition, the upper plate 170 is formed with a plurality of vent holes 171 for heat dissipation, so that heat can be released from the inside of the sub-rack 100.

However, the sub-rack structure having the above structure not only damages the electronic components mounted therein by entering and exiting the electromagnetic waves through the vent hole 171 of the top plate 170, but also the electromagnetic waves passing through the electronic components therein. Emitted to the outside through the pores 171 not only damages the external electronic equipment but also harms the human body.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a subrack structure employing a shielding filter for shielding electromagnetic waves to prevent electromagnetic waves from entering and leaving the subrack. .

1 is a schematic exploded perspective view showing a conventional subrack structure;

2 is a sectional view of the main part of FIG. 1;

3 is a perspective view showing a sub-rack structure of an embodiment of the present invention employing a shielding filter,

4 is a cross-sectional view of main parts of FIG. 3;

5 is an exploded perspective view illustrating main parts of FIG. 3.

* Explanation of symbols for main parts of the drawings

201 Top plate 202 Side plate

203 ... bottom plate 204 ... front plate

211,221 Front frame 212,222 Center frame

Rear frame 230 ... Guide rail

240 ... shield filter

The present invention to achieve the above object is provided with a front frame and a center frame at predetermined intervals on the upper and lower, respectively, the front plate is fixed to the upper and lower front frames, side plates fixed to both ends of the frame, and An upper surface plate fixed to an upper front frame and a center frame and having an air vent formed thereon, and a lower surface plate fixed to the lower front frame and a sander frame, and having an electronic circuit component mounted therein In the subrack structure of the communication device,

An electromagnetic shielding filter is provided between the front frame and the center frame to block the entry and exit of electromagnetic waves.

In the sub-rack structure, the lower plate and the intermediate plate is coupled and supported at a predetermined interval between the front frame and the center frame, the upper plate is provided on the upper portion of the intermediate plate, the lower plate and the intermediate plate formed of a metal net A shielding filter is provided.

According to the above characteristics of the present invention, the subrack structure of the present invention is provided with a shielding filter on the top or the bottom to block the entry and exit of electromagnetic waves to prevent damage to the internal electronic components.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 to 5 showing the sub-rack structure of the embodiment of the present invention, which is provided with a front frame 211, a center frame 212 and a rear frame 213 at a predetermined interval on the upper, the lower frame of the upper The front frame 221, the center frame 222 and the rear frame 223 corresponding to the (211,212,213) are provided.

A front plate 204 on which power supply indicator lamps are installed is fixed to the upper and lower front frames 211 and 221, and both ends of the upper and lower frames 211, 212, 213, 221, 222, and 223 are fixed. The side plate 202 is fixed to it.

In addition, the upper surface of the upper frame (211, 212, 213) is provided with a top plate 201 is formed with a plurality of vent holes (201a) for heat dissipation. The top plate 201 is fixedly coupled to the auxiliary frame 215 stacked on the top of the upper front frame 211.

A bottom plate 203 having a vent hole 203a is coupled to the lower front frame 221 and the center frame 222.

Guide rails 230 for coupling the circuit board 20 on which electronic circuit components are mounted on the upper front frame 211, the center frame 212, and the lower front frame 221 and the center frame 222, respectively. Is combined.

In addition, a board fixing frame 260 is provided between the upper and lower center frames 212 and 222 to fix the motherboard 25 to which the circuit board 20 is connected.

Meanwhile, the lower plate 205 and the intermediate plate 206 are coupled and supported at predetermined intervals between the front frame 211 and the center frame 212, and the upper plate 201 is formed on the upper portion of the intermediate plate 206. It is prepared. The lower plate 205 and the intermediate plate 206 are formed with ventilation holes 205a and 206a for heat dissipation, similar to the upper plate 201.

An electromagnetic shielding filter 240 is provided between the lower plate 205 and the intermediate plate 206 to block the entry and exit of electromagnetic waves.

The shielding filter 240 is also provided on the lower side of the bottom plate 203.

The shielding filter 240 is formed of a metal mesh as shown in FIG. 5. The metal network is canceled (absorbed) by the interaction of energy (collisions) between electrons as electrons pass through them.

The sub-rack structure having the above-described structure is provided with shielding filters 240 in the upper and lower portions, thereby allowing the air holes 201a, 205a, 206a of the upper plate 201, the middle plate 206, and the lower plate 205. ) Can not only dissipate heat inside, but also prevent the damage of electronic components mounted therein by blocking the access of electromagnetic waves.

In addition, the electromagnetic waves generated inside the sub-rack are prevented from being emitted to the outside through the air vents 201a, 205a, and 206a to prevent damage to external electronic equipment.

As described above, the structure of the present invention employs the shielding filter 240 to prevent electromagnetic interference and enable stable operation of an electronic communication device.

The present invention as described above is not limited to the above embodiments and can be practiced with many modifications without departing from the spirit and scope of the present application.

The sub-rack structure having the above-described structure is provided with shielding filters 240 in the upper and lower portions, such that the air holes 201a, 205a, 206a of the upper plate 201, the middle plate 206 and the lower plate 205 are provided. In addition to being able to dissipate internal heat, the electronic components mounted therein prevent damage by blocking access of electromagnetic waves.

In addition, the electromagnetic waves generated inside the sub-rack are prevented from being emitted to the outside through the air vents 201a, 205a, and 206a to prevent damage to external electronic equipment.

Claims (2)

The front frame and the center frame are provided at upper and lower portions at predetermined intervals, respectively, the front plate fixed to the upper / lower front frame, side panels fixed to both ends of the frames, and the front frame and the center frame of the upper part. In the sub-rack structure of the electronic communication device having a fixed upper surface plate formed with air vents, the bottom plate fixed to the lower front frame and the center frame, the circuit board mounted with electronic circuit components therein is accommodated , A sub-rack structure employing a shielding filter for shielding electromagnetic waves, characterized in that the electromagnetic shielding filter for blocking the entry and exit of electromagnetic waves between the front frame and the center frame. According to claim 1, wherein the lower plate and the intermediate plate is coupled between the front frame and the center frame at a predetermined interval, the upper plate is provided on the upper portion of the intermediate plate, And a shielding filter formed of a metal mesh between the lower plate and the middle plate.