FR2767227A1 - ELECTRICAL APPARATUS WITH INSULATION DISPLACEMENT TERMINALS - Google Patents

Abstract

Electrical device provided with insulation displacement power screw terminals intended to cooperate with parallel distribution conductors. The terminals B have a stepped shape and include a cage 30 which cooperates with a clamping piece 40 with claws 43 for insulating the release. The terminal offers for the conductor C associated with it an active passage 36, as well as for the conductors C to be connected to the other terminals at least one passive passage 38.

Description

The present invention relates to an electrical switch device

  low-voltage multipole comprising a housing comprising current conductors

  internal, a face near which extend distribution conductors

  gangways located substantially in a common plane and screw terminals

  power connection capable of being connected to distribution conductors

  tion to connect these to connection pads of the current conductors

  temrnes. It appears necessary in certain cases to be able to supply such a device from 0o of a set of busbars or flexible distribution cables arranged without discontinuity

  transversely to the device and to be able to connect it in some place

  conquers conductors, by an appropriate arrangement and constitution of the terminals. It is also desirable to make a bomrnier housing the conductors in their region to be connected, comprising screws located substantially in the

  common plane of the conductors and preferably removable from the device by disengaging

chage.

  The invention aims to solve this problem.

  According to the invention, the screw terminals are of the insulation displacement type and include

  take a cage housing a connection pad, cooperating with a clamping piece and provided with an active passage for the distribution conductor associated with

  connect, the cages being substantially aligned with the common plane of the con-

  distribution ductors, at least one of the cages having at least one step

  passive sage for distribution conductors to be connected to the other terminals.

  Preferably, the cages are of stepped shape and comprise at one end a screw and at the other end the active passage of the associated distribution conductor, the screws of the different cages being located at the same level and the active passages being located at levels offset, and between these ends a middle part having the passive passages and of height differentiated according to the cages; the clamping pieces are preferably provided with insulation release claws and

  have a different length depending on the terminals. The cage is advantageously mo-

  bile, while the clamping piece is fixed and wedged against the connection pad,

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  and a bypass conductor can be inserted and clamped between a screw clamp and

the connection range.

  The screw terminals are advantageously housed in a removable plug-in block of the connection pads and comprising a body and a sole, the sole bearing for each terminal a clamping piece provided with release claws

  of insulation and having passages through which the connection pads pass.

  o10 The description will be made below of a non-limiting embodiment of the invention.

  vention, opposite the attached drawings.

  Figure 1 shows in perspective a multi-switch electrical appliance

  low-voltage area according to the invention.

  Figure 2 shows an exploded perspective view of the entire power bomrnier as-

associated with the device.

  Figure 3 shows in section the power bomier assembled to the device.

  Figure 4 shows the same bomrnier in exploded view.

  The electrical device shown in the figures is a multi-switch device

  contactor, circuit breaker or contactor breaker type tank comprising a box

  tier 10 which has a front face 11 provided with a control button, an upper face 12, side faces 13,14 and a rear face 15 used for fixing

  on a support not shown. In the housing 10 are located conductors

  and mechanical and electrical control and / or protective devices

  tion. The device being here three-pole, the internal conductors terminate in three connection areas A1, A2, A3, here in the form of tabs projecting from a face of the housing, for example at its upper face 12. Near this face are

  arranged in distribution conductors C1, C2, C3 parallel to each other and extending

  dant in a direction X perpendicular to the lateral faces 13,14, while being

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  located substantially in the same plane P parallel to the face 12. The conductors are flexible cables; they can also be formed by rigid conductors. A bomier 20 ensuring the connection of the distribution conductors Cl, C2, C3 with the connection lugs A1, A2, A3 is assembled to the device on its face 12. This bomrnier comprises an insulating housing consisting of a body or cover 21 and a sole 22; the housing houses insulation displacement screw terminals B1, B2, B3, these

  terminals being somehow stepped.

  Each terminal B is a power connection terminal and comprises a clamping cage 30 movable in translation in a direction Y perpendicular to X in response to the rotation of a screw 31 engaged in a threaded orifice 32 of the cage and a part to claws 40 fixedly mounted on the sole 22. The screws 31 of the three terminals

  are identical and located on the same level to facilitate operation by the operator.

  while the cages 30 and the claw pieces 40 are of different length

  in the Y direction. Alternatively, claws can be carried by the cage.

  The cage 30B1 of terminal B1 is the shortest, the cage 30B2 of terminal B2 has a

  medium length and the 30B3 cage is the longest. Each cage 30 has a sec-

  straight tion substantially U-shaped and constitutes a cradle for the cable to be connected; each cage comprises a front face 33 provided with the tapped hole 32, two cheeks 34 provided at their end 35 opposite the screw with an active passage 36 for the cable to be connected in this terminal and, for terminals 30B2 and 30B3 and in a median part of differentiated length 37, at least one passive passage, preferably an oblong passive passage 38, for the cables of the other bomrnes,

  respectively Cl for 30B2 and C1, C2 for 30B3. The active passages 36 are located

  therefore kill in positions offset in the direction Y. The passages 36, 38 are open upwards opposite the face 12, so that the cables can be engaged in transverse passages 23 of the body 21 and in the passages considered. Each passage 36 is bordered towards the rear by an active stop 36a

  tightening and forward by a stop 36b active in loosening.

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  Each cage 30 further comprises towards the face 12 an opening 39 to allow the associated connection tab A to pass, the latter itself passing through a lumen 24 of the sole 22. A removable or pivoting cover can also be added to the

  body to cover the cables to the right of the device.

  Each claw piece 40B1, B2, B3 has a U-shaped cross section and includes two

  lateral faces 41 guided against the internal faces of the cheeks 34 of the associated cage

  ciée and, at the front end, a support face or support heels 42 allowing

  to wedge against the rear face of the respective connection pad A1, A2, A3.

  1O The side faces 41 are of different lengths for the various parts 40; they terminate at their rear end with the claws themselves 43 and are interconnected by a lower face 44 provided with two orifices 45; the orifices are intended to engage on pins 46 of the sole 22 to position

on the latter, Exhibit 40.

  The body 21 of the connection box has a front face 25 provided with orifices a passage for a screwdriver, an upper face 26 provided on the one hand with the passages 23 already mentioned and on the other hand with openings 26a for the introduction

  in the branch cable terminals, these cables can be clamped directly

  ment between the movable brackets 31a and the connection pads A1, A2, A3. The body 21 finally has surfaces 27 forming front and rear stops for the cages and inter-chamber partitions or other various shapes 28 constituting

slides for cages.

  The body 21 is assembled to the sole 22 and the connection box is assembled

  to the device housing by any usual fixing means allowing a demon-

floor.

  The wiring of the terminals is carried out as follows. It is assumed that the bor-

  nes B are installed in the connection box, with the claw pieces 40 positioned on the pins 46 and the cages 30 held by the sole 22, the stops 29, the front face 27 and the partitions 28. The cables C are introduced into the corridors 23, then the screws 31 are actuated; each screw moves until taken

  support of its stirrup 31a against the connection pads A1, A2, A3, and then

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  pulls the cage 30 which drives the cable associated with the contact of the claws 43 of the part, itself wedged against the area A, until the cable sheath is pierced and

  the contact between the claws and the cable core.

  The cage stroke is small, so that the cable undergoes only a minimal movement in the direction Y. When it is desired to connect the branch cables, they are introduced into the holes 26a and tightened by the stirrups before driving the cages. When the terminals are loosened, the cables are released from the claws 43 by means of the stops 36b of the cages 30. The connection box 21, 22 can easily be removed from the device in block with the cables C without it being

need to disconnect them.

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Claims (7)

Claims   1. Low voltage multi-pole electrical switch device comprising a bol-   tier (10) which has internal current conductors, one face (12) near   which extend parallel distribution conductors (C) located sensitive-   ment in a common plane and terminals with power connection screws (B) capable of being connected to the distribution conductors to connect these to connection pads (A) of the internal current conductors, characterized in that : - the screw terminals (B) are of the insulating displacement type and include a cage (30) cooperating with a clamping part (40) and provided with an active passage (36) for the distribution conductor (C ) associated with connecting, the cages   being substantially aligned with the common plane (P) of the distribution conductors   tion, at least one of the cages (30) having at least one passive passage (38)   for distribution conductors (C) to be connected to the other terminals.   2. Apparatus according to claim 1, characterized by the fact that:   the cages (30) are stepped and comprise at one end a screw (31) and at the other   at the end the active passage (36) of the associated distribution conductor (C), the screws of the different cages being located at the same level and the active passages being   located at staggered levels, and between these ends a middle part   both the passive passages (38) and the height differentiated according to the cages.   3. Apparatus according to claim 1, characterized by the fact that: the clamping parts (40) are provided with claws (43) for insulation release and   have a different length depending on the terminals.   4. Apparatus according to claim 2, characterized by the fact that:   the cages (30) are movable and the clamping pieces (40) are fixed and wedged against   be the respective connection pads (A). 7 2767227   5. Apparatus according to claim 1, characterized by the fact that: the screw terminals (B) are housed in a housing (20) comprising a body (21) and a sole (22), the sole bearing for each terminal (B) a clamping piece (40) with claws (43) for insulating release and being provided with passages (24) through   connected by the connection pads (A) of the device.   6. Apparatus according to claim 5, characterized by the fact that:   the bomier (20) can be withdrawn en bloc from the connection pads (A) of the device.   O10 7. Apparatus according to claim 1, characterized by the fact that: the screw (31) is associated with a bracket (31a) applicable on the connection pad (A) and the body (21) has orifices (26a) for introduction drop cables   in the space provided between the bracket (31a) and the connection pad.