MXPA99001021A

MXPA99001021A - Procedure for rehabilitation of a cabinet for electronic card drawers and cabinet asi rehabilit

Info

Publication number: MXPA99001021A
Application number: MXPA/A/1999/001021A
Authority: MX
Inventors: Ruque Christian
Original assignee: Gec Alsthom Transport Sa
Priority date: 1998-01-29
Filing date: 1999-01-27
Publication date: 2000-12-06

Abstract

The present invention is concerned with a method of rehabilitating a cabinet (100A) for drawers (7) of electronic cards, characterized in that it comprises the steps consisting of: creating a separable electronic drawer (13) having a junction connection (14) ) on its back face and where the depth P is less than the depth L of the drawer to be rehabilitated (7), create at least one drawer (9A) of the bottom of the cabinet that holds, on the front face, a set of connectors floats (l0) of the bottom of the separable electronic drawer (13) and, which holds, on the rear face, an average set of link connectors (12), a wiring (11) of the drawer (9A) of the bottom of the cabinet that joins the set of floating connectors (10) to the set of link connectors (12), keep the cabinet to be rehabilitated (100A), a mechanical assembly of the cabinet (1, 2), the rear supports (3) of the connectors (4) from the bottom of the drawers to rehabilitate , the set of the connectors of the bottom of the drawers to be rehabilitated (7) and the output wiring (5) of the cabinet (100A), create a free zone Z between the rear supports (3) of the connectors (4) of the bottom of the cabinet (100A) and the connection junction (14) of the separable electronic drawer (13), area in which the drawer (9A) of the bottom of the cabinet can be introduced

Description

PROCEDURE FOR REHABILITATION OF A CABINET FOR DRAWERS OF ELECTRONIC CARDS AND CABINET ASI REHABILITATED Description of the invention The present invention is concerned with the cabinets for electronic card drawers in general and comprises more in particular a method of rehabilitation of these cabinets, as well as a cabinet for drawers of electronic cards thus rehabilitated. The method of rehabilitation of a cabinet for drawers of electronic cards of the invention is described more particularly in the context of an application in the domain of rail transport. The cabinet for electronic card drawers rehabilitated according to the rehabilitation method of the invention is thus particularly intended to be shipped in a railway vehicle. Due to the rapid evolution of the electronic components and because the purchase of completely new material represents a strong investment, more and more the material entrepreneurs are driven to rehabilitate the existing material. This is somewhat more true that, in general, the mechanics and the electronics of capacity age and represent the important part of the cost of the global material. In contrast, command electronics are often obsolete after a few years.

REF. 29421 The consequences of the above are that the components are not found on the fly or is at prohibitive prices for repair and that the maintenance costs are high with respect to the new possible solutions. Beyond a certain cost, a rehabilitation of the control electronics is envisioned. Several solutions of the prior art to effect this rehabilitation are described hereinafter. The cabinets for electronic card drawers and the materials to be rehabilitated from the prior art come from old standards, such as the DIN 297 standard, the CF 61002 standard and the XNF 61005 standard. New standards must be respected, such as the EN standard 50 155 or the standard CLC / TCYX (sec) 95 attached to EN 50 155. A first solution of the prior art consists of remaking the drawers of the prior art to the identical in order to find identical interfaces at the level of the cabinet. A major drawback of this first solution of the prior art is that the cajon would no lonbe adapted to new techniques and new standards, in particular as regards volume reduction, the BUS technique and new solutions. Connection.

A second solution of the previous technique is to redo the new cabinets by integrating the drawers that have the most recent technologies taking into account the new standards. A main drawback of this second solution of the prior art is that it involves significant costs at the level of the cabinet integration study, because it is necessary to redo adapted cabinets and due to the fact of reexamining the wiring assembly, for example of the vehicle in the case of an application in the field of transport, by adapting the old cable by means of supplementary intermediate connection points. Another drawback of this second solution of the prior art is that it involves important delays in carrying out the rehabilitation, in particular for the study of the adaptation and for the realization because it must dismantle the old cabinets, modify the wiring on the site and assemble the new cabinet . Another drawback of this second solution of the prior art is that it induces risks of malfunctioning: this second solution requires retouching an obsolete wiring, when joining intermediate wiring. Another drawback of this second solution of the prior art is that the rehabilitation once carried out is irreversible.

The material of the prior art to be rehabilitated applied to a vehicle, in particular rail, is presented in an implanted cabinet in which electronic crates arranged one below the other are mounted. In the last, a bottom of the cabinet makes the support of the floating connectors to ensure with an appropriate wiring the realization of functional links between the drawers and the wiring of the vehicle. The drawers are fixed in front of the cabinet. On the back of the drawer, connectors are attached to the cabinet connectors. Thus an object of the invention is a method of rehabilitation of a cabinet for drawers of electronic cards that allow to obtain a cabinet that does not present the drawbacks of the cabinets rehabilitated from the prior art. According to the invention, the method of rehabilitation of a cabinet for drawers for electronic cards is characterized in that it comprises the steps consisting of: creating a separable electronic drawer having a junction connection on its rear face and where the depth P is lower than the depth L of the drawer to be rehabilitated, create at least one drawer of the bottom of the cabinet that holds, on the front face, a set of floating connectors of the bottom of the separable electronic drawer and that holds, on the rear face, a set average of link connectors, a wiring of the drawer of the bottom of the closet that joins the set of floating connectors to the set of link connectors, keep of the cabinet to be rehabilitated, a mechanical assembly of the cabinet ^ the rear supports of the connectors of the bottom of the drawers to be rehabilitated, the set of connectors at the bottom of the drawers to be rehabilitated and the cabling Out of the cabinet, create a Z free zone between the rear supports of the connectors at the bottom of the cabinet and the connection junction of the separable electronic drawer, an area in which the drawer at the bottom of the cabinet can be inserted. The procedure for the rehabilitation of a cabinet for drawers for electronic cards of the invention is such that the cabinet bottom drawer (s) are made to be introduced and to be fixed in front of the cabinet to be rehabilitated. According to another characteristic of the invention, the cabinet for electronic card drawers comprises a mechanical assembly of the cabinet, rear supports of the bottom connectors of the drawers to be rehabilitated and an output wiring of the cabinet and the cabinet is characterized in that: the cabinet it is capable of receiving at least one bottom drawer of the cabinet holding, on the front face, a set of floating connectors of the bottom of the separable electronic drawer and holding, on the rear face, an average set of link connectors, a wiring of the drawer of the closet bottom that joins the set of floating connectors to the set of link connectors, the cabinet is capable of receiving at least one separable electronic drawer having a junction connection on its rear face and where the depth P is less than the depth L of the drawer to be rehabilitated, a free zone Z between the rear supports of the connectors ores of the cabinet and the connecting connection of the separable electronic drawer, area in which the bottom drawer of the cabinet is susceptible to be introduced. The invention also concerns a cabinet for electronic card drawers rehabilitated according to the rehabilitation method of the invention. An advantage of the method of rehabilitation of a cabinet for drawers of electronic cards of the invention is not to touch up the structure of the existing cabinet.

Another advantage of the method of rehabilitation of a cabinet for drawers of electronic cards of the invention is not to touch up the wiring of the vehicle. Another advantage of the method of rehabilitation of a cabinet for drawers of electronic cards of the invention is to reduce the overall costs of rehabilitation at the level of the study and of the realization. Another advantage of the method of rehabilitation of a cabinet for drawers of electronic cards of the invention is to make the rehabilitation reversible if necessary. Another advantage of the method of rehabilitation of a cabinet for drawers of electronic cards of the invention is to reduce the technical risks. Other characteristics and advantages of the invention will become apparent from the reading of the description of the preferred method of rehabilitation of a cabinet for electronic card drawers, as well as the cabinet thus rehabilitated, a description that is made in conjunction with the drawings in which: Figure 1 is a perspective view of a cabinet having a rehabilitation comprising an electronic card drawer according to the prior art.

Figure 2 is a top perspective view of a cabinet after rehabilitation, comprising a drawer for electronic cards according to the invention. The method of rehabilitation of an electronic card cabinet of the invention comprises the steps consisting of: creating a separable electronic drawer 13 having a junction connection 14 on its rear face and where the depth P is less than the depth L of the drawer to be refurbished 7, an intermediate mechanical support 9 supporting the set of floating connectors 10 of the separable electronic drawer 13 is adapted in the cabinet to rehabilitate 100A, maintaining a 100% mechanical closet assembly obtained from the cabinet to be rehabilitated. example, by assembling the posts 1 with lateral gualderas 2 and the rear supports 3 of the connectors 4 of the bottom of the drawers to be rehabilitated, the set of the connectors 4 of the bottom of the drawers to be rehabilitated and the output wiring 5 of the 100A, a free zone Z is created between the rear supports 3 of the connectors 4 of the bottom of the cabinet 100A and the interme 9 equipped with connectors 10 of the bottom of the separable electronic drawer 13, a wiring 11 or an intermediate drawer (not shown) is adapted between the rear supports 3 and the intermediate supports 9. Preferably, the new back support is made so that it passes and is simply fixed in front of the cabinet to be rehabilitated. It is preferable to prepare the intermediate drawer assembly to the exterior of the vehicle so that the vehicle only remains to join the rear connectors and to fix the new intermediate bracket (s) equipped with wired connectors. The process of rehabilitation of a cabinet for drawers of electronic cards according to the invention allows to realize one or several new optimal drawers in term, in particular of functional grouping, of height, of length, of exit of the cable and of the type of connection. The procedure of rehabilitation of a cabinet for drawers of electronic cards according to the invention makes it possible to considerably reduce the cost of studies. In effect, only the intermediate drawer with the intermediate support will be studied, if it is considered that the new drawer is developed on the other hand. The procedure of rehabilitation of a cabinet for drawers of electronic cards according to the invention allows to considerably reduce the cost of rehabilitation to the level produced. In fact, the cabinet and the output wiring of the cabinet are preserved. In addition, the new drawers used are standardized and adapted to the new standards, ie optimized. Finally, the realization of the intermediate drawer It can be done outside the vehicle. The procedure for the rehabilitation of a cabinet for electronic card drawers according to the invention makes it possible to considerably reduce the intervention time in the vehicle and thus reduce the duration of the immobilization of the vehicle. The method of rehabilitating a cabinet for drawers of electronic cards according to the invention makes it possible to considerably reduce the risks of breakdowns inherent to the retouching of the previous wiring. The procedure of rehabilitation of a cabinet for drawers of electronic cards according to the invention is reversible, it is possible to easily return to the situation before rehabilitation.

~ This advantage is important in terms of knowing the risks inherent to retouching existing cabling. In effect, a retouch of the existing wiring involves the cutting of the previous cables where the insulation is weakened. In addition, in the case of shielded cables, the appearance of connectors imposes an interruption of the shielding and unfavorably modifies the initial electrical characteristics. On the other hand, rehabilitation is done - in general over long periods, the rehabilitation procedure according to the invention allows to easily administer the rehabilitation by reducing the number of cabling records between the rehabilitated and non-rehabilitated state. Figure 1 is a perspective view of a cabinet before rehabilitation 100A comprising a drawer 7 for electronic cards according to the prior art. In this figure 1 a mechanical cabinet assembly obtained by assembling the posts 1 with lateral flanges 2 and rear supports 3 of connectors 4 from the bottom of the drawer is shown. The connectors 4 of the bottom of the drawer are mounted floating and take up the wiring of the cabinet 5.

The wiring of the cabinet 5 is realized by means of various connections that open either in the connectors 4 of the bottom of the drawer, or in the connectors 6 of the cabinet. This wiring of the cabinet 5 is located behind the supports of the connectors 3. To better understand the description concerning the cabinet before rehabilitation, Figure 1 shows, in the same cabinet, two states of the drawer. In zone A, the cabinet is represented without the drawer assembly to be rehabilitated 7 for electronic cards. In zone B, the drawer to be retrieved 7- 'for electronic cards is displayed in the cabinet in the inserted position. This drawer to be rehabilitated 7 for parallelepiped-shaped electronic cards has a drawer connector 8 which is fixed on the connector 4 of the bottom of the drawer and performs the necessary functional link to the proper functioning. This drawer 7 has the characteristics of depth L such that it uses all available space in front of the support of the connectors 3. 'Figure 2 is a top perspective view of a cabinet 100B after rehabilitation, comprising an electronic card drawer according to the invention. In this Figure 2, the same mechanical cabinet assembly as shown in Figure 1 is shown.

- By way of example, the mechanical cabinet assembly is also obtained by means of the assembly of the posts 1 with lateral flanges 2 and rear supports 3 of the connectors 4 of the bottom of the drawer. The connectors at the bottom of the drawer 4 also take up the wiring of the cabinet 5. The cabinet to be rehabilitated 100A, shown in figure 1, has been removed from the old drawer 7 and a drawer has been arranged in front of the rear supports 3 of the connector. 9A of the cabinet bottom that holds, on the front face, a set of floating connectors 10 of the bottom of the separable electronic drawer 13 and that supports, on the rear face, an average set of link connectors 12. From the floating connectors 10 depart wiring links 11 that are connected to the other end to the connection connectors 12. The drawer 9A of the bottom of the cabinet is shown with a separation in order to make appear the wiring 11 of the drawer 9A of the bottom of the cabinet joining the assembly of floating connectors 10 to the set of link connectors 12. These link connectors 12 are fixed and attached to the connectors 4 of the bottom of the drawer in order to secure the to functional continuity of the links between the connector 6 and the cabinet connector 6 and the separable electronic drawer 13 equipped with rear connectors 14 adapted. The separable electronic drawer 13 allows the application of the rehabilitation method of the invention, has a depth P reduced in such a way that it adapts once fixed instead of the old drawer 7. The separable electronic drawer 13 is completely fixed, the front face of the drawer is juxtaposed with the side of the lateral gualdera 2. In such a position of the drawer, the connectors 10 and 14 are electrically bonded. It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention. Having described the invention as above, it is claimed as property, what is contained in the following

Claims

- Claims 1. A method of rehabilitation of a cabinet for drawers of electronic cards, characterized in that it comprises the steps consisting of: creating a separable electronic drawer having a junction connection on its rear face and where the depth P is less than the depth L of the drawer to be rehabilitated, create at least one drawer of the bottom of the cabinet that holds, on the front face, a set of floating connectors of the bottom of the separable electronic drawer and that holds, on the rear face, an average set of link connectors, a cabling of the bottom drawer of the cabinet that connects the set of floating connectors to the set of link connectors, to keep the cabinet to be rehabilitated, a mechanical assembly of the cabinet, the rear supports of the connectors of the bottom of the drawers to rehabilitate, the set of connectors at the bottom of the drawers to be rehabilitated and the wiring for the exit of the arm In this case, create a Z free zone between the rear supports of the connectors at the bottom of the cabinet and the connection junction of the separable electronic drawer, an area in which the drawer at the bottom of the cabinet can be inserted.
2. The method according to claim 1, characterized in that the drawer (s) at the bottom of the cabinet are made so as to be introduced and to be fixed in front of the cabinet to be rehabilitated.
3. A cabinet for electronic card drawer, the cabinet includes a mechanical cabinet assembly, rear supports for the bottom connectors of the drawers to be rehabilitated, a set of bottom connectors for the drawers to be rehabilitated and a cabinet output wiring, the cabinet is characterized in that: the cabinet is capable of receiving at least one cabinet bottom drawer that holds, on the front face, a set of floating connectors of the bottom of the separable electronic drawer and which supports, on the rear face, a average set of link connectors, a cabling of the bottom of the closet box that connects the set of floating connectors to the set of link connectors, the cabinet is capable of receiving at least one separable electronic drawer that has a splice connection in its back face and where the depth P is lower than the depth L of the drawer to be rehabilitated, a free zone Z between the supports The rear drawer connectors of the cabinet and the connection connection of the separable electronic drawer, area in which the bottom drawer of the cabinet can be inserted.
4. The cabinet according to claim 3, characterized in that it has been rehabilitated according to the rehabilitation method according to any of claims 1 or 2. SUMMARY OF THE INVENTION The present invention is concerned with a method of rehabilitating a cabinet (100A) for drawers (7) of electronic cards, characterized in that it comprises the steps consisting of: creating a separable electronic drawer (13) having a connection of splice (14) on its rear face and where the depth P is less than the depth L of the drawer to be rehabilitated (7), create at least one drawer (9A) of the bottom of the cabinet that supports, on the front side, a set of floating connectors (io) of the bottom of the separable electronic drawer (13) and holding, on the rear face, an average set of link connectors (12), a wiring (11) of the drawer (9A) of the bottom of the cabinet that connects the set of floating connectors (10) to the set of link connectors (12), keep the cabinet to be rehabilitated (100A), a mechanical assembly of the cabinet (1, 2), the rear supports (3) of the connectors (4) fon of the drawers to be rehabilitated, the set of connectors at the bottom of the drawers to be rehabilitated (7) and the output wiring (5) of the cabinet (100A), create a free zone Z between the rear supports (3) of the connectors (4) of the bottom of the cabinet (100A) and the connection of junction (14) of the separable electronic drawer (13), area in which the drawer (9A) of the bottom of the cabinet is susceptible to be introduced.