JPH05315775A - Structure for locker of communication device - Google Patents

Abstract

PURPOSE:To perform extentions of shelves, etc., easily and quickly, by providing on the more front side than the pillar side of a locker the duct part extended up and down which is separated from power supply cables by the one of the sidefaces of the lateral pillar of the locker and can so store the signal cables of the respective shelves in itself intensively that they are taken out on the front side of the locker in an openable way. CONSTITUTION:Rail assembly bodies 25 for guiding and supporting shelves insulate the respective shelves individually from a locker 1. Respective power supply cables (A) are so stored in a lateral pillars 3, 3' as to be covered with the groove parts of the lateral pillars, and signal cables (B) are isolated from the power supply cables (A). Cable ducts 43 storing the signal cables (B) in themselves can be so taken off the locker 1 that the signal cables (B) are taken out on the front side of the locker 1 at will, and the cable ducts 43 are so configured that they can be connected in a conductive way with the frame ground of the main body of the locker 1 surely. Also, the signal cables (B) are so configured that they are provided on the front side of the locker 1 and can be taken out simply. Thereby, the replacements of the shelves, etc., are made possible easily and quickly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locker structure for accommodating electronic devices, particularly communication devices, which can effectively cope with electrostatic discharge (ESD) and electromagnetic interference (EMI) from the human body.

[0002]

2. Description of the Related Art Conventionally, a plurality of shelves mounted in an EMI / ESD-compatible rocker are connected to a rocker frame ground (FG) in a conductive manner, that is, the shelf is an FG. The structure is fixed so that it makes sufficient surface contact.

[0003]

However, in the conventional structure, since the addition or replacement of the shelf is not particularly taken into consideration, the installation and removal of the shelf is extremely troublesome and time-consuming. There is an inconvenience. Therefore, it is an object of the present invention to provide a locker structure for a communication device, which can easily and easily and quickly perform work such as shelf addition on the front side of the locker and can sufficiently cope with EMI / ESD. ..

[0004]

In order to solve the above problems, a rocker structure of a communication device according to the present invention is a box-shaped locker to which a plurality of communication device shelves are detachably mounted from an open front surface thereof. In, a rail assembly provided in the locker for guiding and supporting the shelf includes an insulating portion for separating the signal ground of the shelf and the frame ground of the rocker main body, and the metal side pillar of the rocker is , Having a vertically extending long groove portion capable of accommodating the power cable of each shelf collectively, is separated from the power cable by one side surface of the side pillar on the front side of the side pillar, and is freely openable to the rocker front side, A vertically extending duct part capable of accommodating the signal cables of each shelf is provided, one part of the duct part is integrally connected to the side pillar, and the other part is A side post via the contact gasket extending below, to reduce the contact impedance, characterized in construction to be connected to the movable.

[0005]

The insulating part of the rail assembly separates the signal ground of the shelf from the frame ground of the rocker. Further, the power cable of the shelf is housed so as to be covered by the long groove portion of the metal side pillar of the rocker, separated from the signal cable, and the signal cable itself is connected to the side pillar so as to reduce the contact impedance. Since it is housed in the section, the signal cable is less susceptible to noise at least from the outside or from the power cable. Furthermore, since the duct portion can open the signal cable to the front side of the rocker, it is possible to easily and quickly add a shelf to the rocker.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is an exploded perspective view of a rocker structure according to an embodiment of the present invention, and FIG. 2 is a horizontal cross-sectional view of the rocker structure of FIG. First, referring to FIG. 1, a box-shaped rocker 1 of the present embodiment basically has side columns 3, 3'having a U-shaped cross section on both front sides and rear columns 5, 5'having an L-shaped cross section on both rear sides. It is three-dimensionally composed of four columnar parts, and an upper frame 7 and a lower frame 9 are provided on the upper and lower sides thereof.
Is attached. A shield plate 10 covering the upper frame 7 is screwed to the opening of the upper frame 7.

On the rear surface of the locker 1, there are fixing fittings 1 at the four corners.
The back cover 13 is attached via 1. Back cover 13
A masking coating or a continuity coating is applied to the surface that contacts the upper frame 7, the lower frame 9, and the like. The side cover 19 is provided on both sides of the rocker 1 via an intermediate fixing metal fitting 15 bridging the side pillar 3 (3 ′) and the rear pillar 5 (5 ′) and an upper and lower fixing metal fitting 16.
Is attached. Similar to the back cover 13, a masking coating or a conductive coating is applied to the surface of the side cover 19 that contacts the upper frame 7, the lower frame 9, and the like.

A gap (slit) extending vertically is formed in the abutting portion of the back cover 13 and the side cover 19 in terms of processing accuracy and assembly accuracy, but the rear pillar 5 (5 ') closes it. Since it extends vertically, there is no particular inconvenience on the shield. However, when a higher shielding property is required, the butting may be stopped and, for example, the connecting portions of both covers may be configured to overlap each other. Further, both the covers 13 and 19 are preferably made of a single plate in view of the EMI characteristic rather than being divided, and further, the manufacturing cost can be reduced by being formed of corrosion resistant aluminum or a plated steel plate.

By the way, the front surface of the locker 1 is open, and an electronic device, specifically, a wireless communication device (not shown).
Each box-shaped shelf 21 with a built-in is attached and detached from the front side. In order to attach / detach this shelf 21, a rail assembly 25 formed by bending a metal plate into a substantially L-shape is provided so as to bridge the side columns 3 and 3'and the rear columns 5 and 5'in the locker. Installed symmetrically at intervals.

The interior of the rocker will be described in detail below with reference to FIG. 2. However, since the present rocker 1 has a bilaterally symmetrical structure, only one side (right side) will be described from the viewpoint of avoiding duplication of description. I decided to. Insulating members 27 are attached to the rail surface portions 26 on both sides of the rail assembly 25, on which the lower surface of the shelf actually slides (slide) at the time of attachment / detachment, by using countersunk screws. On the side surface 29 of the rail which stands vertically from the side, an insulating plate 30 is provided with adhesive tape (not shown) so as to prevent electrical contact with the shelf 21 (not shown in FIG. 2). Similarly, the shelf mounting surface portion 32 that is vertically attached to the rail surface portion 26 from the shelf front surface side is also attached.
An insulating plate 33 is attached. Since the rail structure as described above is adopted, the frame ground (FG) on the rocker body side and the ignal ground (SG) on the shelf side are completely electrically separated, that is, electrostatic discharge is supported. It has a possible structure. The insulating member and the insulating plate can be eliminated by forming the rail itself from a polyvinyl chloride resin metal laminated plate, for example.

Pin members (not shown) protruding in the insertion direction are provided at predetermined positions on both sides of the insertion side (rear surface) of the shelf 21, and on the other hand, on the rocker side (rail assembly 25), these pins are provided. A bracket 35 is provided with a recess or hole (not shown) into which the members can be mated with male and female. Then, when the shelf 21 is mounted at a predetermined position in the locker, both members fit tightly, and so-called rattling (vibration, floating, etc.) of the shelf 21 can be effectively prevented. There is.

The corresponding power cable A for supplying electricity to each of the shelves 21 arranged in a line in the upper and lower rows is the side pillar 3
They are stored together in a U-shaped long groove inside in advance and are detachably connected to a dedicated power cord (not shown) pulled out from the shelves 21 at the height position of each shelf 21. It is like this. A rectangular opening 37 corresponding to the long groove of the side pillar 3 (3 ') is formed at a predetermined position of the upper frame 7 (Fig. 1), and a power cable A hanging from the ceiling side (Fig. 1 (not shown) is introduced through this into the locker.

On the other hand, a large number of signal cables B connected to the shelves 21 are integrally attached to the side surface of the side pillar 3 (3 ') at a predetermined interval, and have a stepped duct that protrudes half toward the front side of the rocker. A cable duct 43 having an L-shaped cross section, which is detachably attached to the fixing metal fitting 39 by a resin fastener that does not easily discharge, for example, a so-called Nylatch 41.
It is housed in a duct space (duct portion) that extends vertically inside the.

The edge of the cable duct on the side pillar side is the side pillar 3
The EMI gasket 45 is inserted between them in consideration of the clearance (play) with respect to (3 '). That is, a stepped portion extending vertically is formed at a corner of the side pillar 3 (3 ′) on the front side of the shelf, and an EMI gasket 45 having a rectangular cross section is vertically formed on the stepped portion so as to partially project to the front side of the shelf. Affixed to. As a result, when the cable duct 43 is attached and fixed by the nail latch 41, the cable duct 4
3 is surely conductively connected to the side pillar through the EMI gasket 45 without play (play). It should be noted that the EMI characteristics can be improved by performing a masking treatment on both member portions that come into contact with the EMI gasket. An opening (not shown) is formed at a predetermined position of the upper frame 7 corresponding to the cable duct 43 so that the signal cable B is less likely to be physically and mechanically loaded.

As described above, in the present embodiment, the rail assembly 25 for guiding and supporting the shelves 21 individually insulates the shelves 21 from the rocker 1, and the power cables A are connected to the side pillars 3. The cable duct 43 is housed so as to cover the groove 3'and is separated from the signal cable B, and the cable duct 43 for housing the signal cable B can be detached so that the signal cable B can be taken out to the front side of the rocker and can be removed from the rocker body. The signal cable B is less likely to be affected by noise from the outside or from the power cable A because it is configured so as to be surely electrically connected to the frame ground (FG). Further, since the signal line B is arranged on the front side of the rocker 1 so that it can be taken out easily, it is possible to easily and quickly replace the shelf 21 or the like.

[0016]

As described above, according to the present invention, the inconveniences of the prior art can be effectively eliminated, and it becomes possible to easily and quickly add a shelf to a locker.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a rocker structure according to an embodiment of the present invention.

FIG. 2 is a horizontal cross-sectional view of the rocker structure of FIG.

[Explanation of symbols]

 1 ... Rocker 3, 3 '... Side pillar 21 ... Shelf 25 ... Rail assembly 27 ... Insulating member 30 ... Insulating plate 33 ... Insulating plate 43 ... Cable duct 45 ... EMI gasket

Claims (1)

[Claims] 1. A box-shaped locker (1) to which a plurality of communication device shelves (21) are detachably mounted from the open front surface thereof. The locker (1) is provided in the locker and guides and supports the shelf (21). The rail assembly (25) is a shelf (21) signal ground, a rocker body frame ground,
The locker (1) is provided with an insulating part (27, 30, 33) for separating the power supply cable (A) of each shelf (21) from the metal side posts (3, 3 '). Has a vertically extending long groove portion that can be accommodated in the front side of the rocker, and is separated from the power cable (A) by one side surface of the side pillar (3, 3 ') in front of the pillar side (3, 3'). A vertically extending duct part (43) capable of accommodating the signal cables (B) of the shelves (21) in a centralized manner is provided in the open side of the side column (3). , 3 '), and the other part is movably connected to the side pillars (3, 3') via vertically extending contact gaskets (45) so as to lower the contact impedance. A locker structure for a communication device.