RU2108693C1 - Cabinet for radio electronic equipment - Google Patents

Abstract

FIELD: radio electronics, design of instruments with withdrawable units. SUBSTANCE: proposed cabinet includes framework 1, separable housings 4 with withdrawable units 5 anchored in it in front one above another, electric connectors of internal couplings 8, connectors of external couplings of particular and common assignment 10, 12. Connectors 10 of external couplings of particular assignment are positioned on left side walls of each housing 4 corresponding to them and electric connection of connectors 12 of external couplings of common assignment with each housing 4 with units 5 is realized with the aid of plates 13 of couplings of common assignment installed in stacks in right side wall of framework 1 and connectors 8 of internal couplings arranged on the right outside framework 1 and corresponding housing 4. EFFECT: increased degree of unification of design and adaptability of cabinet to manufacture. 1 cl, 5 dwg

Description

 The invention relates to electronics and can be used in the design of instruments and devices with drawers, in particular for digital computing.

 Known mounting system [1], built on the basis of the cabinet base, to which with the help of brackets are attached removable housings with drawers (blocks).

 However, this installation system is quite complex in its design, has a complex system for organizing electrical installation, as a result of which it is not technologically advanced to manufacture. In addition, it is not sufficiently unified in terms of the constructive organization of electrical connections.

 The closest in its technical essence to the proposed technical solution is the dashboard of electronic equipment [2]. The cabinet contains a frame with horizontal load-bearing supports on the front side, removable housings with retractable radio-electronic units and printed-circuit board electronic circuit boards, electrical connectors for internal communications, electrical connectors for external and public connections, which mounted on a frame on top and electrically connected to buildings with blocks by means of ribbon cables.

 The disadvantage of this technical solution is the insufficiently high manufacturability, which is associated with the complexity of the design due to the use of cut-in connectors of internal connections for the electrical docking of housings with pull-out wiring with internal instrument wiring, requiring a significant number of connecting dimensions with high accuracy (at the level of 0.1. . 0.15 mm), as well as additional tools (guides, catchers) that provide accurate direction when installing the enclosures.

 This technical solution is also not sufficiently unified in terms of design, because when designing new devices on the basis of a well-known cabinet with a new composition of cases with blocks, and, consequently, electric connectors of external and internal connections, there is a need for new modifications of the upper part of the frame to accommodate external connection connectors and in the design of a new internal instrument wiring with new internal connection connectors.

 The internal instrument wiring, which provides electrical connection of each of the housings with external (outside the cabinet) devices through the connectors in the upper part of the chassis, as well as the connection between the housings inside the chassis is very difficult in design, manufacture and control. In order to present the complexity of this electrical installation, it should be noted that, as a rule, a large number of external communication connectors are located in the upper part of the frames or cabinets. For example, for devices based on six-story cabinets, about 30 ... 40 connectors of the 2RMD30 type with an average number of 32 contacts in each of them are required. It is clear that the design, manufacture and control of wiring with so many connections are very time-consuming procedures.

 The reasons for the above-mentioned drawbacks of the cabinet adopted as a prototype are the complexity and insufficiently high degree of unification of the design, as well as the lack of measures to systematize external connections and simplify the internal wiring.

 Thus, the cabinet of electronic equipment [2], adopted as a prototype, is complex in its design and in terms of internal wiring, that is, not technologically advanced to manufacture, and also not high enough in terms of the degree of unification of the design.

 The purpose of the invention is to increase the degree of unification of the design and manufacturability of its manufacture.

 The goal is achieved by the fact that in a cabinet of electronic equipment containing a frame with horizontal load-bearing supports on its front side, removable housings with retractable radio-electronic units and with circuit boards of said electronic electronic blocks with printed wiring fixed to the indicated horizontal supports, electrical connectors of the internal connections, electrical connectors of external connections of a private purpose and electric connectors of external communications of general purpose which are installed on a car The speakers are on top and are electrically connected to the indicated housings with retractable electronic blocks, external connectors for private use are located on the same side walls of the housings, and external connectors for general use are electrically connected to the housings with electronic blocks through general-purpose communication boards that are installed one above the floor the other on the wall of the frame opposite the walls of these buildings with connectors for external communications of private use and are electrically connected to the corresponding housing with blocks by means of the indicated connectors of internal connections, moreover, some parts of the connectors of internal connections are installed on the front external side of the side wall of the frame with general purpose communication boards, and their other parts are made in the form of cap parts of the connectors and are located on the external sides of the other side walls of the same name buildings with electronic blocks, respectively. In addition, each housing with electronic blocks is equipped with a printed circuit board, which is installed on its side wall with connectors for external communications of private use, on its inside and is electrically connected to these connectors for external communications of private use and printed circuit board of the corresponding switching board of its electronic block.

 Comparative analysis with the prototype shows that the claimed device is characterized in that the connectors of external communications for private use are located on the same side walls of each of the buildings with blocks, and the electrical connection of the connectors of external communications of general purpose with each of the buildings is carried out using electrically connected general purpose communications boards, thereby increasing the degree of unification of the structure and improving the manufacturability of its manufacture. Due to the electrical connection of the corresponding general purpose communication boards and housings with blocks implemented using internal communication connectors, one part of which is installed on the front outer side of the side wall of the frame with general purpose communication cards, and the other is made in the form of cap parts of connectors located from the outer sides of other side walls of the same name with blocks, the cabinet design is simplified by eliminating special guides for the cases and the manufacturability is improved tovleniya by reducing requirements for manufacturing precision design with mating connectors. In addition, the placement in the same side walls of each of the buildings with printed circuit boards electrically connected to private external connectors and printed circuit board mounting simplifies wiring and, therefore, increases the manufacturability of electronic equipment cabinet manufacturing. Thus, the claimed device meets the criteria of the invention of "novelty."

 Comparison of the claimed technical solution not only with the prototype, but also with other technical solutions of this technical field allows us to conclude that the criterion of "significant differences".

 In FIG. 1 shows a cabinet of electronic equipment in a disassembled state, a general view in a perspective view; in FIG. 2 - front view of the cabinet; in FIG. 3 is a top view of a cabinet; in FIG. 4 - view of the cabinet on the left; in FIG. 5 is a cabinet view to the right.

 The electronic equipment cabinet contains a frame 1 with a back cover 2 made in the form of a channel frame. On the frame 1 there are horizontal supports 3 on the front side, the number of which is in accordance with the number of cabinet floors. On the supports 3, removable housings 4 with retractable electronic blocks 5 are fixed floor-by-stage. Each housing 4 with blocks 5 is a functionally and structurally complete device (mini-computer, information converter, data storage device, etc.). Blocks 5 are electrically connected to each other by means of a circuit board made on the frame 6, to which are attached a multilayer printed circuit board 7 and connectors 8 interconnects. On the removable panels 9 of the same side walls of each of the buildings 4, external connectors 10 for private connections are installed outside, that is, those connections that are directly related to a specific building 4 with blocks 5. The number of connectors 10 on each of the buildings 4 is small and amounts to usually 4 ... 7 pieces. A small number of private connectors 10 makes it possible to use a printed circuit board 11 for electrically connecting them to the printed circuit board 7, mounted inside the side wall with external connectors for private use and attached internally to the panel 9. The electrical connection of the board 11 with connectors 10 and the circuit board 7 is carried out with the help of jumpers from flexible stranded wire with insulation, for example, MGTF brand. The printed circuit boards 7 and 11 on the connected sides are provided with pads or metallized holes (not shown).

 On the upper horizontal part of the frame 1, connectors 12 of general-purpose external connections are installed, i.e. such communications, which apply to all cases with blocks 5 without exception. Such communications for digital computing devices can include standardized communications such as data buses (code lines), for example, MPI buses (inter-module parallel interface according to GOST 26765.51-86). General purpose communications on the board 7 are implemented in one or two of its layers by parallel current-carrying lines to which the conclusions of the connectors 8 of interblock communications of blocks 5 go.

 Inside the side wall of the frame 1, opposite the walls of the housings 4 with connectors 10 of external connections for private use, are placed vertically and floor-by-stage one above the other printed circuit boards 13 of general-purpose connections with the same number of parallel current-carrying lines as on board 7. Electrical connection of the top of the boards 13 general-purpose communications with connectors 12 and with each other is made using jumpers similar to those indicated above.

 On the specified side wall of the frame 1, connectors 14 are installed outside it, which with their planar (tape) outputs are soldered to the contact pads of the printed circuit boards 13 connected by current-carrying lines (for example, on the other side) with parallel current-carrying general-purpose communication lines. To ensure the possibility of soldering the planar conclusions of the connectors 14 to the contact pads on the sides of the boards 13, which are turned into the inside of the specified side wall of the frame, the latter has technological windows that are closed after wiring by the shields 15.

 The electrical connection of the boards 13 for general purpose communications and boards 7 for inter-unit communications in the enclosures 4 is carried out through the socket connectors 16, which are mates of the connectors 14. The socket connectors 16 are connected by short harnesses 17 to the contact pads at the ends of the parallel current-carrying lines of the printed circuit boards 7. Thus, with with the help of connectors 14, 16, harnesses 17, parallel-current-carrying lines of the boards 13 and boards 7 are electrically connected (i.e., the first with the first, the second with the second, etc.).

 Assembly and wiring of the cabinet are as follows.

 On the made frame 1 with a back cover 2, connectors 12 for general-purpose external connections are installed, inside the side wall, opposite the walls of the buildings 4 with connectors for private external connections made of a channel, there are printed circuit boards 13 for general-purpose connections. Next, soldering jumpers between the terminals of the connectors 12 and the contact pads of the upper part of the upper of the printed circuit boards 13, and then between the contact pads of the lower part of the upper board 13 with the contact pads of the upper part of the lower board 13, etc. After that, connectors 14 are attached to the specified side wall of the frame 1 from the outside and sequentially solder from the leads to the contact pads of the boards 13 made in their front part along the long sides.

 At the same time, assembly and wiring of each of the cases 4 with blocks 5 can be carried out. At the same time, for example, the assembly and wiring of the circuit boards, in which the connectors 6 are installed on the frames 6 and multi-layer printed circuit board 7, and the outputs of the connectors 8 are soldered in the metallized holes of the boards 7. After that, the circuit board is fixed to the backs of their respective housings 4. Next, on the removable panels 9, the side walls of the housings 4 with external connectors For this purpose, printed circuit boards 11 are installed outside of them, into the metallized holes of which solder flexible bridges of sufficient length to provide round holes for these connectors. Then, the connectors 10 are fixed on the outside of the removable panels 9 and the mounted panels 9 are installed in the aforementioned side walls of the housings 4. After that, in each of the housings 4, the jumpers are soldered between the printed circuit board 11 and the multilayer printed circuit board 7, as well as the soldered short bundles 17 with contact elements the right parts of the boards 7 and the findings of the connectors 16.

 Finally, the mounted housing 4 with blocks 5 are fixed on the corresponding horizontal supports 3 of the frame 1 and the final operation is performed - the coupling of the connectors 16 and connectors 14.

 Cabinet maintenance, for example, in case of removing any of the cases 4 with blocks 5, is very simple and consists in undocking the corresponding sleeve connector 16 and undocking the cable parts of the connectors (not shown) from the connectors 10 and loosening the screws that secure the frame 4 to the horizontal supports 3 (elements mounts not shown).

 The proposed cabinet of electronic equipment in comparison with the prototype [2] has a higher degree of unification and is more technological in manufacturing.

 This is achieved due to the fact that the connectors of private external connections are placed respectively on the same side walls of each of the buildings, and the electrical connection of the external connectors of general purpose with each of the buildings with the blocks is carried out using electrically connected circuit boards of general purpose, installed one above the other in the side wall of the frame opposite the side walls of the housings with external connectors for private use, and the connection to each other, printed circuit boards for general purpose communications and housings with blocks are implemented using internal communications connectors, one of the parts of which is mounted on the front external side of the indicated side wall of the frame, and the other is made in the form of the cap part of the connector located on the outside of the other housing wall of the same name with in blocks. In addition, a printed circuit board is installed inside the side wall of each of the buildings with blocks with external connectors for private use, electrically connected to the external connectors for private use and the printed circuit board.

 A higher degree of unification of the cabinet design compared to the prototype follows from the fact that the frame of the proposed cabinet with installed electrical connectors and printed circuit boards (see above) makes it possible without any changes (modifications) to use it for designing various devices that differ from each other other composition of the sliding blocks in removable housings, as well as the composition and number of electrical connectors for private communications. It is clear that if private connectors for housings with blocks representing different functional devices are really different for each of them, then general-purpose external connectors installed on the frame, for example, on the MPI bus GOST 26765.51-86, remain unchanged at least least for a whole generation of digital computing.

 Thus, in contrast to the prototype cabinet, the frame of which contains variable components (connectors of external and internal connections, internal instrument wiring), the frame of the claimed cabinet contains only constant components (connectors and printed circuit boards for general purpose communications), and therefore has a higher degree of unification.

 The design of the inventive cabinet is simpler compared to the prototype, because it does not contain any spatial parts and assemblies that provide the exact direction of the mating structures for the joint connectors of internal connections, and therefore there is no need for precision mounting and connecting dimensions.

 The systematization of external connections, expressed in the separation of electrical connectors into external connectors for private and general use and their corresponding placement, greatly simplifies internal wiring.

 Installing on the same side walls of buildings with blocks of a relatively small number (4 to 7 pieces) of private external connectors, allows them to be electrically connected to the interconnect patch circuit board using a printed circuit board attached to these side walls. Thanks to the placement of a small number of general-purpose external connectors on the frame, it has also become possible to carry out printed circuitry for general-purpose connections between the cases with blocks in the form of simple double-sided printed circuit boards of general-purpose connections located in the side wall of the frame opposite to the walls of the cases with external connections private use.

 In the prototype, containing, as noted above, up to 30 ... 40 external connectors, it is not possible to use a simple (one or two-sided) printed wiring in the frame due to the very large number of connections (1000 - 1200) between the external connectors and patch boards of all cases with blocks. The use of multi-layer printed circuit boards in the prototype for the implementation of internal installation significantly complicates the design and manufacture of various devices based on the prototype cabinet.

 Apparently, it should be noted that the use in the claimed technical solution of short jumpers from a flexible stranded wire, for example, the MGTF brand for connecting printed circuit boards, practically does not complicate the wiring, because they can be cut to the required length and cut out for soldering on automated equipment. The short harnesses for the female connectors are all the same and also easy to manufacture.

 Simplification in comparison with the prototype of the cabinet design and the internal wiring of the frame give reason to speak of a higher manufacturability of the proposed technical solution.

 Thus, the claimed cabinet of electronic equipment in comparison with the prototype has a higher degree of unification of the design and is more technological in manufacturing.

Claims (2)

 1. A cabinet of electronic equipment comprising a frame with horizontal load-bearing supports on its front side, removable housings with retractable radio-electronic blocks and printed circuit boards of electronic blocks with electronic mounting, electrical connectors for internal communications, electrical connectors for external communications, fixed to the horizontal supports, one above the other private use and electrical connectors external destination connections that are mounted on the frame on top and are electrically connected to the buildings with extension electronic electronic blocks, characterized in that the connectors for external communications of private use are located on the same walls of the buildings, the connectors of external communications of general purpose are electrically connected to the buildings with the radio electronic blocks through communication boards of general purpose, which are installed one above the other on the wall of the frame opposite the walls enclosures with external connectors for private use, and are electrically connected to the respective enclosures with blocks through connectors internal communication , Wherein one of the connectors internal links mounted on the front outer side wall of the frame with a general purpose boards bonds, and other parts are in the form of coupling of the connectors and are arranged on the outer sides of other side walls of similar housings with radio electronic units, respectively.  2. The cabinet according to claim 1, characterized in that each case with a radio-electronic unit is equipped with a printed circuit board, which is installed on its side wall with connectors for external communications of private use on its inside and is electrically connected to connectors of external communications of private use and a printed circuit the circuit board of its electronic unit.

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