JPH04237191A - Structure for introducing cable into shelf - Google Patents

Abstract

PURPOSE:To enable a space large enough for handling a card lever or the like to be provided in front of a package by a method wherein a wire aligning member is fixed along the widthwise direction of a shelf, and a cable duct is provided just above or below the wire aligning member in parallel with it in the horizontal projection plane of a rail frame. CONSTITUTION:A shelf 1 is provided with a box-type main body which is formed of rail frames 1a and 1b and two side plates 1c and whose front and rear are open, a back board 7 is fixed to the rear of the main body concerned transversing an opening plane, and an electronic circuit package 3 can be housed in the main body through the front opening of the main body. The electronic circuit packages 3 are connected to each other for communication of signals, positioned, and fixed. A cable duct 4 is fixed to the front region of the base of the rail frame 1b traversing the rail frame 1b so as not to protruding from the horizontal projection plane of the rail frame 1b. A wire aligning member 12 is fixed along the cable duct 4 corresponding to the position of the packages 3 housed in the shelf 1.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to electronic equipment such as telecontrollers and telemeters for power equipment, and more particularly to a cable introduction structure for a shelf that accommodates these equipment.

0002

2. Description of the Related Art In telecontrollers and the like, many external cables are introduced into a shelf and connected to packages constituting electronic equipment in order to send and receive signals to and from a large number of sensors attached to a monitoring target. In particular, with the development of high-density packaging, the number of these cables tends to increase more and more, and if the cables are poorly handled, the size of the entire system including the cables will increase even if the device itself becomes smaller. That could be the result.

FIG. 4 shows a conventional structure for introducing external cables into the shelves of these electronic devices. The shelf 1 has rail frames 1a and 1b on the top and bottom thereof (however, only the upper rail frame 1a is shown in the figure), and the electronic circuit package 3 has a large number of rails 2 provided on the rail frames 1a and 1b. along the front opening of the shelf and connected to a common backboard (not shown) installed across the back of the shelf.

A cable duct 4 having a U-shaped cross section is fixed to the lower front edge of one of the rail frames (the lower rail frame 1b in the illustrated example) and protrudes forward in the direction across the shelf. are bundled and once received in this duct 4, and then branched and each is connected to the corresponding package 3 by a connector from the front side. Known card levers 6 are attached to the upper and lower corners of the front surface of each package 3 to improve operability when inserting and removing the package from the shelf.

[0005]

[Problems to be Solved by the Invention] In this conventional structure, a plurality of cables 5 are bundled until just before being connected to the package 3, so even after being introduced into each package, the cables 5 remain in the front of the shelf 1. It's a good idea to mix things up and get messy. For this reason, the cable exists in the operation area of the card lever 6 described above, and its operation is often obstructed.

[0006] Furthermore, since the cable duct 4 is provided protruding from the front of the shelf 1, there is also the drawback that the required floor space for the entire device becomes large. The present invention solves the problems of the prior art, minimizes the required floor space, neatly introduces external cables into the corresponding package, and provides enough space on the front of the package for operating card levers, etc. The purpose of the present invention is to provide a cable introduction structure for a shelf that can form a space with a large space.

[0007]

[Means for Solving the Problem] This object is to house a plurality of electronic circuit packages in parallel along the rails in a shelf consisting of an upper and lower rail frame having a plurality of parallel rails, and to In an electronic device configured by connecting and positioning a connector to a backboard provided across the backside, an external cable introduced into each package is connected to the outside of at least one of the rail frames at the front side of the package. A line alignment member for positioning and holding the line is fixed along the width direction of the shelf, and a cable duct is provided in parallel to the line alignment member and directly above or below it in the horizontal projection plane of the rail frame. This is achieved by a cable introduction structure for the shelf, which is characterized by:

[0008]

[Operation] According to the present invention, external cables introduced into the shelf are gathered into a bundle and once drawn into the cable duct. Next, each cable is assigned to a wiring member installed on the front surface of each package, and each cable is held and positioned one by one by the wiring member to the connector on the top plate of each package. are connected in an orderly manner.

[0009] This eliminates the cable clutter at the front of the package, making it easier to operate the card lever attached to the front of the package. Hereinafter, the present invention will be explained in more detail based on preferred embodiments shown in the drawings.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an exploded perspective view of a shelf 1 for electronic equipment equipped with a cable introduction structure according to the present invention. This shelf 1 has a box-shaped main body with open front and rear surfaces, which is composed of upper and lower rail frames 1a, 1b and both side plates 1c. A backboard 7 is attached to the back side of the main body across the opening surface, and the electronic circuit package 3 is inserted through the front opening along a plurality of rails 2 provided in parallel to the rail frames 1a and 1b. Acceptable. These packages 3 are mutually signal-connected by fitting and connecting the connector 10a fixed to the rear edge to the connector 10b on the backboard 7 side, and are also positioned and fixed within the shelf.

[0011] Mounting fittings 9 having an L-shaped cross section are installed on both side plates 1c.
are fixed vertically, so that each shelf 1 can be attached to a frame (not shown) to construct a larger system of stacked shelves. A beam 11 for operating a card lever having a U-shaped cross section is fixed to the front edges of the upper and lower rail frames 1a and 1b.

[0012] In the front area of the bottom of the lower rail frame 1b,
The rail frame 1b is placed within a range that does not protrude from the horizontal projection plane.
A cable duct 4 is fixed across the. A line alignment member 12 having a plurality of notches 12a arranged in a comb-teeth pattern corresponding to the position of each package 3 stored in the shelf is fixed along this line. Package 3 inside shelf 1 assembled in this way
To introduce the external cables 5 into the duct 4, the bundle of cables 5 is drawn into the duct 4 through the side opening of the shelf 1, as shown in FIG. Next, add this to each package 3
The wires are separated, and each is pulled out from the duct 4 through the corresponding notch 12a of the wire alignment member 12. The connector 1 attached to the tip of the cable 5
3a is fitted into the connector 13b (see FIG. 1) attached to the top plate of the corresponding package 3 and fixed.

FIG. 3 shows an example of a cable introduction structure using a wire alignment member different from the above example. According to this, a cylindrical alignment element 14 made of elastic plastic and having a gourd-shaped cross section is fixed in correspondence with each package 3 along the front edge of the lower rail frame 1b. This element 14 has a projection 15 having a curved shape as shown in the figure at its top, and a hole (
(not shown), the protrusion 1
It is rotatably supported around 5. Each cable 5 is led out of the duct 4 through this element 14 and connected to each package 3 with a connector.

In the above example, the line alignment member is provided on the lower side of the shelf, but it may be provided on the upper side instead of or in addition to this.

[0015]

[Effects of the Invention] As described above, according to the present invention, immediately before the external cable is connected to each package in the shelf,
Since the wires are separated and positioned in an orderly manner by the wire alignment member, the front side of the package is tidy and the card levers etc. attached here can be easily operated. Also, since the cable duct is installed within the horizontal projection plane of the shelf,
Installation space can be saved.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a cable introduction structure for a shelf according to the present invention.

2 is a perspective view of the introduction structure of FIG. 1, also in an assembled state; FIG.

FIG. 3 is a perspective view of an introduction structure according to another example of the present invention.

FIG. 4 is a perspective view of a cable introduction structure for a conventional shelf.

[Explanation of symbols]

1...Shelf 1a, 1b...Rail frame 1c...Side plate 2...Rail 3...Electronic circuit package 4...Cable duct 5...External cable 6...Card lever 7...Backboard 9...Mounting bracket 10a, 10b...Connector 11...Beam 12...Wire alignment member 13...Cable connector 14... Line arrangement element

Claims (3)

[Claims] Claim 1: A shelf (1) consisting of upper and lower rail frames (1a, 1b) having a plurality of parallel rails (2).
), a plurality of electronic circuit packages (3) are housed in parallel along the rail (2), and these are connected to a backboard (7) provided across the rear surface of the shelf with connectors (10a, 10b) In the electronic device configured by positioning, the external cable (5) introduced into each package (3) is connected to the outside of at least one of the rail frames (1a or 1b) of the package (3). A line alignment member (12) to be positioned and held on the front side is fixed along the width direction of the shelf (1), and the rail frame (1a) is placed parallel to and directly above or below the line alignment member (12). ,1
A structure for introducing cables into a shelf, characterized in that a cable duct (4) is provided in the horizontal projection plane of b). 2. The cable introduction structure according to claim 1, wherein the wire alignment member (12) comprises a row of comb-tooth-shaped notches (12a). 3. Cable according to claim 1, wherein the straightening member (12) is an individual cylindrical straightening element (14) made of elastic material and installed correspondingly to each package (3). Introduction structure.