KR950004982B1 - Device for assisting in electric cabling and electrical installation relating thereto - Google Patents

Abstract

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Description

Electrical wiring aids and their electrical systems

1 is a partial wiring diagram of a system according to the present invention, taking an input stage of a programmable automaton as an example.

2 a perspective view of the device according to FIG. 1;

3 is a front view of the apparatus of FIG.

4 is a partial front cross-sectional view of the apparatus of FIGS. 2 and 3;

5 is a perspective view of the rack of FIGS. 2 and 3.

6, 7 and 9 are cross-sectional views showing the connection of end fittings in three successive stage combinations of the rack shown in FIG.

FIG. 8 is a cross-sectional view taken along the line VII-VII of FIG. 7. FIG.

* Explanation of symbols for the main parts of the drawings

20: connection terminal 28: socket

39: electric device 79: rack (guide)

81: end fitting 83: cavity

87: insulating body 88: label holder

91: flexible wire

The present invention relates to an electrical wiring auxiliary device.

The invention also relates to an electrical system equipped with such a device for electrical wiring assistance.

In electrical systems, such as electrical cabinets, there is often a large number of wires connecting many connection points to each other or to the outside.

In the manufacture of the system, some devices are not yet in place and some wiring has already been completed, so the task of connecting the corresponding end fittings must be waited until these fields are fitted and the wiring is subsequently made in several steps. Cases often occur.

In addition, if there is a problem with the system, the corresponding wiring end fitting must be loosened above all in order to remove the device. This risks errors when recombining.

All of these risks are exacerbated when many of the same devices are placed side by side along a rail or on a common socket, for example.

A device for causing the device to be electrically disconnected from the wiring is disclosed for example in DE-A-358,617. Here, a male plug is shown having an electrically connected position and an electrically separated position. Since the plug is not physically separated from the device, the device remains unresolved since the device cannot be detached, for example during maintenance, unless the plug is jammed. If you don't have a clear mark or a specific location to represent it, you can make a mistake by reconnecting the device and then reconnecting it.

There is a device for connecting a set of conductors to a device or a set of devices. US-A-3,090,936 describes an electrical connector in the form of an auxiliary strip comprising a plurality of connecting wires. FR-A-2,584,240 describes an apparatus comprising a plurality of wiring end fittings to which wires can be connected. These end fittings are connected and fixed together. While these devices maintain a certain wiring order, they do not address the risk of mistakes in systems with multiple identical devices.

It is an object of the present invention, but not limited to, to provide an electrical wiring aid device that enables operation on a complex wiring system, in particular when the system comprises a plurality of identical or similar devices mounted side by side.

According to a first aspect of the invention, an electrical wiring auxiliary device is attached to an end of an electrical conductor and connected to a connecting terminal of an electrical device arranged to be detachably disposed on a socket and the connecting terminal of the electrical device. And a guide that can be positioned in contact with the use position. According to the invention, the guide is fixed in relation to the socket and the end fitting is held in the retracted position to disconnect the electrical device from the socket, and the end fitting is connected to the connecting terminal at the use position of the device from the retracted position. Means for guiding to a location for connection.

In the absence of the device, the end fitting is placed in the retracted position in the guide, and the guide serves to remember the position of the connecting terminal to which the end fitting should be connected. Once the device is installed, it is sufficient for the end fitting to slide from the retracted position to the engaged position in the connecting terminal. This guides the end fitting into the terminal correctly. If the device must be disconnected for subsequent inspection or replacement, the end fitting first retracts from the engaged position to the retracted position, the device is removed and then the new or inspected device is remounted and the end fitting is connected to the newly mounted device It is inserted into the engaged position at.

Therefore, even if a plurality of devices are separated at the same time, there is no risk of reversed wiring.

The guide preferably forms a portion of a rack that includes a number of such guides aligned.

This can be used practically for the same or similar devices mounted side by side. The rack is placed along the position of use of the aligned connections of these similar devices.

The rack may be a separate part, with multiple end fittings where they are attached to the connecting terminals of a plurality of devices such that when one end fitting is in the retracted position, the other end fitting is attached to the other device to keep the rack in place. Be sure to

According to a second aspect of the invention, the electrical system of the invention comprises a socket and a device which can be extracted after insertion along the insertion direction, the device comprising at least one terminal on a plane parallel to the insertion direction, And further comprising a wiring aid device in contact with said at least one connecting terminal in accordance with a second aspect such that the end fittings in the guide and retracted positions can be inserted and extracted.

Other features and advantages of the invention will be apparent from the following description in connection with non-limiting examples.

In the example shown in FIG. 1, the detector is generally located on the system 10, which the automaton 1 must control on the signal input 2 of the programmable automaton 1, which is only partially schematic. Receive a signal that is a state function of (3a to 3f).

The state of the detectors 3a to 3f is an interface comprising a relay between the system-signal terminal 24a and the process-signal terminal 25a and in this example an electro-mechanical relay 4a or an optocoupler 4b. The device 11 is transmitted to the signal input 2 of the automaton 1. The interface device 11 comprises four common conductors 34a to 34d, each connected to a respective power supply terminal 35 of the interface device. Outside of the interface device 11, a system power supply 7 and a processing power supply 9 are mounted between two power supply terminals 35, respectively. In each signal input section 2 of the automaton 1, there is a processing circuit 5 and a detection circuit 6, some of which are in the interface device 11, and some of which are other. In the detection circuit 6, the detectors 3a to 3f are placed in series with the element for operating the relay 4a or 4b and the system power supply 7 or the external power supply 12. In the input circuit 5, The processing means 8 of the programmable automaton 1 associated with the corresponding input 2 lies in series with the operating elements of the relays 4a to 4b and the processing power source 9. Connecting to the power source 7 or 9 Each input 5 or detection circuit 6 for connection is actually connected with a corresponding lead 34a to 34d in the interface device 11.

It can also be seen in FIG. 1 that the detection circuits 6 are not all connected to the power source 7 in the same manner. The detectors 3a, 3b, 3e and 3f are respectively mounted in the interface device 11 between the system signal terminal 24a and the system common terminal 24b directly connected to one of the common conductors 34d. The detector 3c is mounted between the signal terminal 24a of the interface device 11 and the fixed terminal of the detector 3b. The detector 3d interacts with its own power source 12 and is not connected to the power source 7 at all.

The system common terminal 24b is all connected to the common lead 34d by a single contact 41d.

The processing means 8 are mounted between the processing signal terminal 25a and the processing common terminal 25b, respectively. The terminals 25b are all connected together to the common lead 34a by a single contact 41a.

As shown in FIG. 3, the interface device 11 includes a socket 28 having a contact wall 29 through which four window shapes 31a, 31b, 31c and 31d are made. The windows 31a to 31d are also arranged in columns perpendicular to the rows, each column comprising a window of each row.

Below the rows of each window 31a to 31d are copper wires 34a to 34d that implement the conductive lines 34a to 34d of FIG. 1, respectively.

As also shown in FIGS. 2 and 3, the socket 28 has a power supply 36 at one end extending in parallel with the rows of windows 31a to 31d and including a power supply terminal 35. do.

The interface device 11 is mounted to face the contact wall 29 of the socket, as indicated by the arrow on the right side of FIG. 2 in the direction of the wall. Interface modules 39 having contact grippers inserted into some of the windows 31a to 31d in a row of the contact walls 29 along the insertion direction perpendicular to the surface and having common conductors 34a to 34 positioned opposite these windows. 34d).

Such a module having three contact grippers passing through the windows 31a, 31b and 31c is, for example, the detector 3f of FIG. 1 and the auto because such a module has to be connected to the conductors 34a, 34b and 34c. An interface can be created between the corresponding signal inputs 2 of the Merton.

In the case of the other detector shown in FIG. 1 sufficient to make a connection with the negative terminal of the system power supply 7 and a single connection with the positive terminal of the processing power supply 9, the module may open the windows 31b and 31c. It will only contain two grippers that pass through.

The system signal terminal 24a consists of a wire grip 20 provided in the module 39 itself.

The system common terminal 24b is a wire grip 320 provided in the common module 72 inserted between the interface modules.

The processing signal and common terminals 25a and 25b consist of pins 220 of the connector 61 attached to the sockets and connected to the ends of the cables coming out of the automaton to accept the complementary connectors. The flexible wire 91 leading to the chamber 77 behind the connector 61 and to the channel 78 along the socket connects each pin 220 to a different wire grip 20 or optional of each interface module 39. The wire grip 320 is connected to the wire grip 320 of the processing common module 73.

The wire grip 20 constituting the processing side wire grip 320 and the system signal terminal 24a is in a symmetrical position on two opposite sides of the module, so that two straight lines are located above the module and one below the module. To form a row.

According to the invention, the device supports a plurality of adjacent connecting end fittings 81 corresponding to a plurality of side-by-side wire grips 20, respectively, and includes a rack 79 made of insulating material. This rack 79 is a separate part both from the module and from the end fitting and is held in place only by the fastening of the connecting end fitting 81 in each wire grip 20.

As shown in FIG. 5, the rack 79 is cut between the adjacent cavities 83 each provided to receive one end fitting and cut to the desired length due to the initiator 82 for dividing into parts. Obtained as a modular plastic strip. Every interval of cavity 83 corresponds to every interval of a row of windows on the socket.

Each cavity 83 consists of a cylindrical conduit adjacent to one side of the rack that is laterally open across the upper major portion except for the base 84 of the rack and against the wall of the module.

The lateral opening of each cavity is such that the cavity is substantially semicylindrical at the end away from the base and gradually closes back towards the base.

The lateral wall of each cavity has a boss 86 at the end opposite the end base 84. This track 79 is, for example, on a metal tube 89 which is extended by a label holder 88 and in which a stripped portion (not shown) of the flexible wire 91 can be engaged through the body 87. Provided is a conventional connection end fitting 81 (FIG. 6) comprising a pressure molded plastic body 87. As shown in FIG. When the peeled end of the electric wire 91 is engaged with the protrusion of the metal tube 89 and the protrusion of the metal tube 89 is sandwiched between the jaw 92 of the electric wire grip 20, the stripped end of the electric wire is the Metal tube is tightened by tightening.

For the installation of end fittings 81 with flexible wires 91 in the rack 79, the end fittings 81 are fitted with the body 87 laterally in the semicylindrical upper part of the cavity 83. It is placed in an inclined position as shown in FIG. The inclined position occurs because the body 87 is pushed laterally against the boss 86. The end fitting 81 then moves axially towards the base 84 so that the end fitting is aligned with the cavity as shown in FIG. 7 and the body 87 is shown in FIG. 8. Likewise, a force is snapped behind the boss 86 when reaching the less wide open area of the common 83.

In this position, called the retracted position, the free end of the tube 89 does not pass through the base 84 of the rack 79. On the other hand, the boss 86 pulls in the opposite direction along the axis from the base 84, thereby preventing the end fitting 81 from being easily extracted. The face of the module coupled with the terminal 20 and the face of the base 84 adjacent to the terminal 20 are parallel to the direction in which the module is inserted and extracted from the socket 28. Therefore, when the end fitting 81 is in the retracted position, the module can be inserted and extracted. The end fitting 81 can be pushed axially from the retracted position toward the engaged position in the wire grip 20 (FIG. 9). From then on, the body 87, which can no longer be released from the cavity 83, is guided axially by the cavity 83, while the protrusions 89 of the tube undergo significant radial movement in the holes of the base 84. do. When the engagement position is reached, the bottom of the label holder 88 is pushed against the top surface of the base 84, while the projection 89 of the tube is connected to the base 84 and protrudes. It is then possible to tighten the jaws 92 of the wire grip 20, which is fixed between the bottom of the label holder 88 as well as the end fitting 81 and between the outer wall of the module to which the wire grip 20 belongs. Do not move the rack (79).

As shown in FIG. 2, the rack 79 loosens the corresponding wire grip 20 for the purpose of removing the module for replacement or repair and then brings the end fitting 81 back to the retracted position and the module If not present, the end fitting 81 on the right side of FIG. 2 remains in place so that the position of the terminal to which the end fitting 81 is to be connected is not forgotten in the absence of a module. This is important if multiple modules are disassembled at the same time. This eliminates all risks of incorrect wiring. To fully release the end fitting 81, simply tilt the end fitting (FIG. 6) to pass through a hard-spot by the boss 86. The rack 79 also enables pre-ordering of the wiring and end fittings when there is no module yet during the initial mounting of the interface device.

As shown in FIG. 4, a hole 66 is provided in the channel 78 to receive wiring end fittings corresponding to the pins of the connector 61 which are not used in mounting.

One of the advantages of the rack 79 is also to place all the end fittings 81 at an angle so that all the end fittings 81 are placed with the label holder 88 facing the viewer. In practice, as shown in FIG. 8, each end fitting is angled next to the label holder 88, which forms a protrusion in the side opening of the cavity 83 of the rack. At the same time, the side openings allow the label to be attached when used on the label holder to be read.

Of course, the invention is not limited to the examples shown and described.

The invention can be applied to a variety of different systems, for example the heat of an electrical contactor.

Claims (13)

A connecting end fitting 81 adapted to be inserted into the connecting terminal 20 of the electrical device 39 attached to the end of the electrical conductor 91 and detachably disposed on the socket 28, and the electrical device 39. In an electrical wiring auxiliary device comprising a guide (79) which can be positioned in contact with a use position of a connecting terminal (20) of the guide (79), the guide (79) is fixed with respect to the socket (28), and the end fitting (81) In the retracted position to disconnect the electrical device 39 from the socket 28, and the end fitting 81 from the retracted position to the connecting terminal 20 at the position of use of the device 39. Means for guiding (83,86) to a position for coupling. 2. The device of claim 1, wherein the guide comprises neck means (86) passed by end fittings (81) for extraction from the guide (79) past the retracted position. 3. An electrical wiring auxiliary device according to claim 1 or 2, characterized in that the guide (79) and the end fitting (81) comprise mutual stop means (84, 88) for preventing the end fitting from passing through the engaged position. . An end fitting comprises an insulating body 87 and a conductive end 89, and means 83 for retaining and guiding the end fitting interact with the body 87 of the end fitting. And wherein the end portion (83) of the end fitting moves radially relative to the guide. 2. The device of claim 1, wherein the end fitting comprises a label holder (88) and has a lateral opening so that the guide can observe the label holder. 6. The guide 79 according to claim 5, characterized in that the width of the lateral openings corresponds to the width of the label holder 88 for angularly positioning the end fittings around the axis in the direction in which the label holder is visible in use. Electrical wiring auxiliary device. 2. The electrical wiring according to claim 1, wherein the guide comprises an opening for inserting and extracting end fittings with respect to the guide in the vicinity of the retracted position and for preventing the end fitting from being extracted from the engaged position other than passing through the retracted position. Secondary device. 8. The method according to claim 7, wherein the side means comprise a substantially cylindrical guide cavity (83), the opening comprises a lateral opening of the cavity, the lateral opening moving in a direction moving from the retracted position to the engaged position. The electric wiring auxiliary device characterized in that it narrows accordingly. 2. The device of claim 1, wherein the guide completely surrounds an end fitting near one side of the guide that is close to the connecting terminal (20) of the device. 2. The device of claim 1, wherein the guide forms part of a rack (79) comprising guide means for simultaneously holding and guiding the plurality of aligned retaining portions and the plurality of end fittings. The rack (79) according to claim 10, wherein the rack (79) is held in place by attachment of the other end fitting (81) with the other device (39) when the end fitting is in the retracted position and there is no corresponding device (39). An electrical wiring assistance device, characterized in that (79) is a separate component adapted to be positioned by a plurality of end fittings (81) to couple end fittings to connection terminals of the plurality of devices (39). 11. The electrical wiring auxiliary device as claimed in claim 10, wherein the rack (79) is part of a modular component cut to length to have a desired number of retainers and guide means. An electrical system comprising a socket 28 and a device 39 that can be ejected and inserted along an insertion direction, wherein the device comprises at least one connecting terminal 20 on a plane parallel to the insertion direction. The end fitting in the retracted position further comprises a wiring aid device (79, 81) according to claims 1 to 12 against the at least one connecting terminal (20) so that the device can be inserted and extracted. Characterized by an electrical system.