FR2634584A1 - TRANSFORMER - Google Patents

Abstract

This is a transformer of the type comprising, for its commissioning, connections specific to the connection of its primary to a power source, and connections specific to the connection of its secondary to the load to be supplied. According to the invention, gathered in the same connection zone 11, said connections are all dependent on the same removable connector 12, with, between said removable connector 12 and said connection zone 11, plug-in connection elements specific to establishing these connections. Application, in particular, to the service of a sign.

Description

The present invention relates generally to

  transformers, and it is aimed more particularly, but not necessarily exclusively, at those applied to

serving of a sign.

  Whatever its application, a transformer comprises, for its commissioning between a power source and any load to be powered by it, connections specific to the connection of its primary with this power source, and connections specific to the connection of its secondary with the load concerned. To date, these connections are established in zones

distinct from such a transformer.

  There are thus, on the one hand, connections associated with its primary, and these are generally low-voltage connections, and there are, on the other hand, connections associated with its secondary, and it's about

  general of connections intervening in high voltage.

  In some cases, the connections associated with the secondary are, for safety, dependent on a cut-off element incorporated for example in a cover intended to cover the assembly in the manner of the cover of the

snuffboxes.

  In all cases, the corresponding cables run

  individually, starting from the corresponding connections.

  This provision has given and may still be satisfactory, but it has the disadvantage that, when the change of the transformer supplying a load is necessary, for example because of a damage thereon or its adaptation to an evolution of this charge, it is necessary to first decort the transformer and then rewire the one that has been substituted. The corresponding operation, which can also affect the wiring of the load, is therefore relatively

hard and long to execute.

  The present invention generally relates to a provision for simplifying this operation and further leading to other advantages. More specifically, it relates to a transformer of the kind comprising, for its commissioning between a power source and a load to be powered by it, connections specific to the connection of its primary with this source of power. supply, and connections specific to the connection of its secondary with this load, the transformer being generally characterized in that, gathered in the same connection area, said connections are all dependent on a removable connector , with, between said connector and said connection area, plug-in connection elements specific to the establishment of these connections. In practice, the single connector, thus implemented, are connected to all the cables needed to serve the various connections, and this connector behaves as a simple plug connection. For the change of the transformer, it suffices to unplug this connector, then to pin it to

  new on the transformer substituted for the previous one.

  No decoupling or wiring to be provided, the corresponding operation is advantageously simplified. Preferably, the same connector may be suitable for several types of transformers, which facilitates the exchange if such an exchange proves necessary in function

the load concerned.

  It is indeed then advantageously not necessary to proceed to any decibration of this load. Preferably, also, the connector according to the invention is advantageously suitable for the implementation of a provision according to which, for certain connections, the connection elements have a longer tap length than others. For example, these connection elements using a clean pin to engage with a cell, the length or height of this pin is, for some connections, in practice those associated with the secondary, higher than other connections , in practice those

associated with the primary.

  Thus, at power-up, the connection of the secondary intervenes before that of the primary, and it is

so does off.

  Conversely, at the cutoff, the disconnection of secondary school comes after that of primary, and it is

so is also off.

  Thanks to such a connection or disconnection in two stages of the whole, any risk of arc or arcing of the arc of the high voltage side is discarded, which household

  advantageously the corresponding connection elements.

  The characteristics and advantages of the invention

  will emerge from the description which follows,

  by way of example, with reference to the appended diagrammatic drawings in which: FIG. 1 is an exploded perspective view of a transformer according to the invention and of the removable connector associated with it, seen from above; Figure 2 is, with a local cutaway, a perspective view of the removable connector, seen from below along the arrow IT of Figure 1; Figure 3 is a larger scale, a partial cross-sectional view of the following transformer

  the invention, along the line II-)]] of Figure 1.

  In these figures, the following transformer

  the invention has been designated by the general reference 10.

  The constitution of this transformer 10 is well known by itself, and does not fall within the scope of

  present invention, it will not be described here.

  It will suffice to indicate that, in the embodiment shown, it is in the general parallelepipedal form, and that, for its commissioning between any power source, not shown, and any charge to be supplied, also not represented, this transformer 10 comprises, in a manner known per se, on the one hand, connections specific to the connection of its primary with this power source, and, on the other hand, connections specific to the connection of its

  secondary with the load to feed.

  According to the invention, gathered in the same connection zone 11, these connections are all dependent on a removable connector 12, in practice the same for all, with, between said removable connector 12 and said connection zone 11, plug-in connection elements specific to the establishment of these various

connections.

  For each connection, these connection elements comprise, in the embodiment shown, a pin 13, and, complementary to this pin 13, a cell 14. In practice, in this embodiment, there is thus, for the primary , four pins 13P and four cells 14P, and, for the secondary, there are two pins

and two 14S cells.

  In the embodiment shown, the pins 13P are carried by the transformer 10, and, in practice, they are aligned with each other, projecting from the bottom 15 of a housing 16, which, provided in one ends of this transformer 10, extending over any

  the width thereof, encompasses the connection zone 11.

  Similarly, the pins 13S are, in this embodiment, carried by the transformer 10, and also aligned with the previous pins 13P, each being respectively disposed on either side of them, they s' extend, also protruding on the

  bottom 15 of the housing 16 corresponding.

  The constitution of such pins 13P, 13S being well known by itself, and not falling within the scope of the present invention, these pins 13P, 13S will not be described more

in detail here.

  It is the same for their connection, some with the transformer primary 10, the others with its

secondary.

  It will simply be indicated that, measured from the bottom 15 of the housing 16, the length, or height, LS of the pins 13S connected to the secondary is greater than that,

  LP, 13P pins connected to the primary.

  Preferably, and as shown, between each of the pins 13S and the alignment formed by the pins 13P, extends over part of their height, an insulation wall 17, which, coming from the bottom 15 of the housing 16, is

  for example in one piece with this bottom 15.

  The partitions 17 thus implemented extend for example parallel to one another, and parallel to the

  general elongation direction of the transformer 10.

  They therefore extend parallel to the longitudinal walls 18 defining the housing 16 of this

  transformer 10, at a distance from these walls 18.

  At their end opposite auxbroche 13P, 13S, their

height is raised.

  In the embodiment shown, the removable connector 12 is in the form of an end cap suitable for capping, and to confine, the housing 16 of the

transformer 10.

  It has, internally, projecting on its bottom, on the one hand, a junction block 21P equipped with cells 14P and 22P connection terminals individually electrically connected thereto, and, on the other hand, respectively arranged respectively. 21P, two junction blocks 21S each having a cell and a connection terminal 22S electrically connected thereto. Like pins 13P, 13S, cells 14P, 14S are well known per se, and therefore will not be described here.

  This is for example elastic sleeves.

  Each of the terminal blocks 21S is separated from the terminal block 21P by a groove 24, which, complementary to the corresponding isolation partition 17 of the transformer 10, is adapted to allow the engagement of the removable connector 12 thereon, however, the raised end of this insulation wall 17

  then extends beyond this 21P junction block.

  As shown, terminal blocks 21P, 215

  thus implemented can be distinct.

  Alternatively, they may be integral, with grooves 24 between each other, and thus not forming

  only one and the same terminal block.

  In the embodiment shown, the secondary terminal blocks 21S are also each separated, by a groove 25, from the corresponding longitudinal wall 26 of the removable connector 12, for engagement, in this groove 25, with the longitudinal wall 18.

  corresponding transformer 10.

  Finally, if desired, and as shown, the bottom 20 of the removable connector 12 may have at least one hole 27, and for example two, for the passage of screws specific to its subjection to the transformer 10, the latter having, in correspondence protruding on the bottom 15 of its housing 16, two bosses 28 of the corresponding screwing. By the conjunction of the isolation partitions 17 of the transformer 10 and the grooves 24 of the removable connector - 12, which together constitute nestable insulating elements, the housing 16 of the transformer 10 in which the connection zone 11 is located is advantageously divided into separate chambers when the removable connector 12 is attached to the transformer 10, with, on the one hand, a primary chamber in which the corresponding connection elements 13P, 14P intervenes, and, on the other hand, on the other hand, other of this primary chamber, two secondary chambers in which intervene, respectively respectively, the connection elements 13S, 14S corresponding. At the removable connector 12 are connected all the cables needed to serve the various connections

  ensured by these connection elements.

  Thus, this removable connector 12 is connected to a primary cable 30P, the conductors of which are connected to the various corresponding connection terminals 22P, and to two secondary cables 30S, the conductor of which unique is itself plugged

  on the corresponding connection terminal 22S.

  If desired, the body of the removable connector 12 may be made of transparent material, so as to leave

  clearly visible the corresponding connections.

  For the commissioning of the transformer 10, it

  just plug in the removable connector 12.

  The corresponding power up then occurs

in two times.

  At first, only the pins 13S associated with his secondary come into contact with the

  corresponding 14S cells of the removable connector 12.

  In a second step, the pins 13P associated with its primary come in turn in mesh with the alévoles

  Corresponding 14P of this removable connector 12.

  For the decommissioning of the transformer 10, it

  just remove the removable connector 12.

  The corresponding cut is then also made in

  two times, following a process that is the opposite of the previous one.

  As will be noted, the removable connector 12 has, laterally, streaks 32 which facilitate the

  gripping during the corresponding operations.

  Of course, the present invention is not limited to the embodiment described and shown, but encompasses any variant embodiment, in particular with regard to the connection elements used and / or with regard to the elements of interlocking insulation also occurring between the transformer and its

removable connector.

Claims (7)

  1. Transformer of the kind comprising, for its commissioning, connections specific to the connection of its primary to a power source, and connections specific to the connection of its secondary with the load to be powered, characterized in that, gathered in the same connection area (11), said connections are all under the control of a removable connector (12), between said removable connector (12) and said connection area (11), connection elements ( 13P, 14P, 13S, 14S)   plug-ins suitable for establishing these connections.   Transformer according to Claim 1, characterized in that, for certain connections, the connection elements (13P, 14P, 13S, 145) have a length   higher setting than others.   3. Transformer according to claim 2, characterized in that, the connection elements comprising pins (13P, 13S) and cells (14P, 145), the length, or height, of some (13S) of these pins. ,   is superior to that of others, (13P) thereof.   4. Transformer according to any one of   Claims 1 to 3, characterized in that, the elements of   connection having pins (13P, 13S) and cells (14P, 14S), said pins (13P, 13S) are carried by the transformer (10) and said cells (14P, 14S) are   carried by the removable connector (12).   5. Transformer according to any one of   Claims 1 to 4, characterized in that between him and the   removable connector (12), interlocking insulating elements, such as partition (17) and groove (24), suitable for compartmentalizing the housing (16) in which the connection zone (11) is located in separate chambers. 6. Transformer according to any one of   Claims I to 5, characterized in that at the connector   removable (12), connect all the cables (30P,   S) necessary to serve the various connections.   7. Transformer according to any one of   Claims 1 to 6, characterized in that the connector   removable (12) is in the form of an end cap.