FR2657411A1 - WIRING SUPPORT. - Google Patents

Abstract

The wiring support is of the type of those having at least one bar (1a) acting as an earth electrode capable of being connected to a connection terminal (2) and having arrangements (1b) (1c) capable of ensuring the positioning and the angular locking of the connection terminal (2).

Description

Wiring support.

  More particularly, the invention relates to a wiring support of the type of those having at least one strip acting as earth ground capable of being connected to a connection terminal of the "domino" type in particular. This is the case, for example, of metal supports receiving the

fluorescent tubes.

  Generally, the "domino" is maintained only by the earth connection bar, engaged in one of the contact pads This results in certain risks of tearing of the bar at the time of particular tightening conductors engaged in the Other domes of the domino Indeed, the domino not being held, if at the time of connection the user does not take the trouble to maintain it, under the effect of the action of clamping, there occurs a natural rotation of the domino compared to the connection tab

  fixed, thereby creating an angular pulling force.

  To try to remedy these disadvantages, we have

  proposed to fix, by screw in particular, the domino in the support.

  This solution is not satisfactory because its implementation is not simple and rational by asking a number

  drilling and screwing operations.

  It has also been proposed special "dominoes" equipped with anchor studs Here again, it is conceivable that such a solution is not satisfactory given the cost generated.

  by the necessity of performing a special domino.

  The purpose of the invention is to remedy these drawbacks and proposes to solve the problem of avoiding breaking the connection bar when tightening the conductors. Such a problem is solved in that said support -2 - has arrangements capable of ensuring the positioning and

  the angular blocking of the connection terminal.

  Advantageously, the arrangements are formed directly at the time of manufacture of the support and are constituted by tabs. To solve the problem of ensuring the angular blocking of the connection terminal in the form of "domino" in particular, that is to say of generally square or rectangular shape at the base, the tabs are arranged on both sides. other of the earth bar and in a parallel manner to allow the engagement of the connection terminal between said tongues, in the angular locking position and

  connection with said earth bar.

  To solve the problem of not increasing manufacturing costs, the tabs are obtained by cutting and stamping a part of the support receiving the

connection terminal.

  Another problem that the invention intends to solve is to improve the distance in the air of the electrical conductors from each other and / or with respect to the earth, with the objective of avoiding any formation

accidental electric arc.

  Such a problem is solved in that the tabs

receive an insulating gasket.

  The invention is described below in more detail with reference to the accompanying drawings in which: FIG. 1 is a perspective view of an example

  embodiment of an ablage support according to the invention.

  Figure 2 is on a larger scale, a cross-sectional view taken along line 2-2 of the 3-

figure 1.

  FIG. 3 is a plan view corresponding to the

figure 2.

  FIG. 4 is a sectional view taken along the line 4-4 of FIG. 2. FIG. 1 illustrates an exemplary embodiment of a wiring support designated as a whole by (1), of any known type and Suitable such as those commonly used for mounting fluorescent tubes This support, usually made from a stamped sheet metal, comprises at least one strip (la) serving as grounding Indeed, this strip is shaped to be connected to a connection terminal (2) in particular of the type known under the term "domino". More particularly, the bar (1a) is dimensioned to be resiliently engaged in one of the contact pads (2a) of the domino ( 2) (Figure 4) receiving the earth conductor The other contact pads (2b) (2c) of the domino ensure, in a perfectly known manner, the electrical connection, taking into account the connection to be made in function, by example, of the hatching apparatus airing intended to be mounted on the support (1) These connections are not illustrated because they are not part of the object

specific of the invention.

  According to a characteristic of the invention, the support ci>, whatever its embodiment and the intended applications, has arrangements capable of ensuring the positioning and the angular locking of the domino (2) These arrangements are determined to prohibit any rotational movement of the domino at the time of tightening conductors in the contact pads (2 b) (2 c) for example, so as to eliminate any risk of tearing of the bar of

  earth (la) under the effect of said tightening torque.

  4 - Advantageously, the arrangements of the support are constituted by two tabs (Ib) <1c) formed directly at the time of manufacture of the support (1) These tabs are obtained by cutting and stamping a part of the support receiving the connection terminal <2). More particularly, the tongues (1b) (1a) are arranged on both sides of the earth plate (1a) in a parallel manner. Similarly, each of the tongues is arranged angularly with respect to the horizontal plane defined by the Opar the part of the support receiving the domino, at an angle (a) less than 900 It is thus possible to engage by sliding, the domino (2) between the retaining tongues (lb) (lc) while ensuring the connection of said domino with the earth terminal (la) in the conditions indicated

nrécédemment.

  Of course, the spacing of the tabs (Ib) <1c) is determined as a function of the width of the connection terminal <2) so that the latter is engaged between said tabs with only the necessary functional clearance In the case a domino having three parallel rows of contact pads, the tabs are arranged symmetrically with respect to the bar of

earth <the>.

  According to another characteristic, the tongues (1b) (1) have, directly or in an attached manner, an insulating lining (3) so as to improve the distance in the air of the conductors in order to avoid any risk of formation of An electric arc This insulating gasket (3) may, for example, be shaped to cap each of said

tabs (Figure 2).

  The advantages are apparent from the description, in

  In particular, simplicity of implementation is emphasized, whereby a cost price reduces the possibility of using domino-type connection terminals in accordance with those commonly sold on the market. rotation of the domino eliminating any risk of accidental tearing of the strip of land at the time of the

  tightening of the electrical conductors.

R E V E N D I CAT I O N S

  -1 wiring support of the type of those having at least one strip (la) acting as a ground connection adapted to be connected to a connection terminal (2), characterized in that said support (1) has arrangements (1b) ) (1 c) able to ensure the positioning and the angular blocking of the terminal

connection (2>.

  -2 medium according to claim 1, characterized in that the arrangements <lb> (lc) are formed directly at the time of the

manufacture of the support.

  -3 Support according to claim 1, characterized in that the arrangements (lb) (lc) are constituted by tabs -4-Support according to claim 3, characterized in that the tongues (lb> (lc) are arranged on the side and on the other side of the earth bar (1a) and in a parallel manner to enable the connection terminal (2) to be engaged between said tongues in the angular locking position and

  connection with said earth terminal (la).

  -5 support according to claim 3, characterized in that the tongues (lb) (lc) are obtained by cutting and stamping a portion of the support receiving the terminal of

connection <2).

  -6 Support according to claim 4, characterized in that the tongues (1b) (1c) are arranged symmetrically to the

earth bar (la).

  Melon support according to any one of claims 4 and 5,

  3 characterized in that each of the tongues (1b) <1c) is arranged angularly with respect to the horizontal plane defined by the part of the support receiving the connection terminal (2>,

  at an angle (> a) less than 90 g.

  Support according to any one of claims 3, 4, 5,

  6 and 7, characterized in that the tabs have a

  insulating material gasket (3).