FR2769418A1 - CABLE CLAMP AND ELECTRIC APPARATUS PROVIDED WITH SUCH A CABLE CLAMP - Google Patents

Abstract

This cable clamp is of the type comprising a strip suitable for tightening the electric cable to be connected to the electric appliance concerned. According to the invention, to impose, on request, on this electric cable (23), one or more 'Another of at least two different orientations, the cable clamp (26) comprises, in one piece, at least two bars (28A, 28B) whose directions of elongation are themselves different, with, for its fixing to the housing (11) of the electrical appliance (10) concerned, at least one chimney (30). Application, in particular, to mobile multiple socket outlets.

Description

"Cable clamp and electrical appliance equipped with such a cable clamp" La

  The present invention relates generally to electrical devices that their users must equip themselves with an electrical cable for their implementation. Even if they can also be used at a fixed station, they are, most often, in practice, mobile electrical devices, such as, for example,

multiple sockets.

  The standards in force on the subject require that the casing of these electrical devices be equipped with a stop device, commonly called cable clamp, which, for obvious safety reasons, must be capable of ensuring energetic restraint. of the electric cable, if, accidentally or involuntarily, it becomes the object of a traction and / or a twist

  likely to cause it to be torn off.

  Such a cable clamp usually includes a simple bar suitable for

tightening of the electric cable.

  The standards impose that this tightening concerns the sheath of insulating material that usually comprises the electric cable, as is the case

flexible electrical cables.

  As a corollary, a certain number of other requirements must be met, including the following: the way of protecting the electric cable against tension and torsion must be easy to recognize, the cable clamp, or at least one of its constituents, and it is most often a plate or a sole buttressing the electric cable when it is tightened by the bar, must be incorporated, or permanently fixed, to the '' one of the constituent parts of the electrical appliance concerned, or, more

  specifically, to one of the constituent parts of the housing thereof; the greenhouse-

  cable must be adaptable to the different types of electric cables likely to be used and its efficiency must not depend on the assembly of the constituent parts of the casing of the electrical appliance; the cable clamp must be made of insulating material or include insulating protection for those of its components which are made of metal; and these, including any clamping screws, must be isolated from the corresponding earth circuit. It turns out, moreover, that, to facilitate the use of the electrical appliance concerned, it is desirable that the outlet of its electrical cable can, as desired, be done according to one or the other of several different orientations. . Thus, for example, in European patent application No. 0 681 348, which relates to a connector, it is provided that this output is

do it axially or laterally.

  To do this, a single piece is used, which laterally includes knockouts, one of which is to be eliminated for a lateral outlet of the electric cable, and which therefore does not constitute a cable clamp as far as , on the one hand, o it does not meet at least some of the requirements recalled above, and o, on the other hand, it participates on the contrary

  the construction of the connector housing concerned.

  When, being a real cable clamp, it is envisaged to be able to have several possible orientations for the electric cable, one can think, to also have to implement only one piece, to resume the standard bar in the matter, and to provide for it several possible implantations in the housing of the electrical appliance, according to the

  orientations to be satisfied for the electric cable.

  This provision leads to an expensive multiplication of points

  fixing to be provided for the bar.

  Furthermore, it does not allow one of the

requirements recalled above.

  In fact, if the electrical appliance is delivered with the bar of its cable clamp mounted in a well-determined position, and if the user wishes the electrical cable to exit in an orientation which does not correspond to this position, it is not necessarily obvious, for him,

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  that he must remove this bar and reassemble it in the position corresponding to

  the orientation he chose for the electric cable.

  There is therefore the risk, in this case, that the cable clamp is not

  actually implemented, at the expense of security.

  The present invention generally relates to a provision allowing on the contrary to have several possible orientations for the electric cable while respecting all the requirements to

  satisfy with regard to cable ties.

  More specifically, it firstly relates to a cable clamp, which is intended to equip the housing of any electrical appliance, and which is of the kind comprising a bar suitable for tightening the electric cable to be connected to this electrical appliance, this cable clamp being generally characterized in that, in order to impose, on demand, the electrical cable concerned, one or the other of at least two different orientations, it comprises, '' in one piece, at least two bars whose directions of elongation are themselves different, namely, a bar said here for simple convenience central bar and at least one bar said here for simple convenience side bar, with, for its attachment to the housing of the electrical appliance, at least one chimney; it also relates to any electrical device whose housing is equipped with such a cable clamp for maintaining the

  electric cable which is to be connected to it.

  In short, the cable clamp according to the invention comprising, by itself, but advantageously in the form of a single piece, a bar for each of the possible orientations for the electric cable, it is mandatory to remove it for the setting in place of this electric cable, and there is only one way to then put it back in place itself, which, for the benefit of safety, makes it possible to ensure with complete certainty that, whatever the orientation

  retained for the electric cable, it will be effectively implemented.

  In addition, the very fact that the bars thus present participate in the constitution of a single piece, the number of fixing points to be provided for

  the whole is advantageously minimized.

  In practice, the number of these attachment points can advantageously

  be reduced to two, to the benefit of both the price of the package and safety.

  Finally, whatever the orientation adopted for the electric cable, the curvature to be imposed on it advantageously only concerns its conductors, and not its sheath. The corresponding radius of curvature can thus advantageously be

  reduced, for the benefit of a reduction in the overall dimensions of the plan.

  Preferably, in order to reduce, as a corollary, the overall height of the assembly, it is provided, according to the invention, that, while ensuring the tightening to be satisfied, the single piece forming according to the invention all of the bars comes in contact with the wall of the box to which it is attached when the electrical cable to be clamped is an electrical cable of

minimum diameter.

  Preferably, finally, to also minimize the space due to the cable clamp within the housing of the electrical appliance, it is provided, according to a development of the invention, that, when the cable clamp comprises a central bar and two side bars, the side bars diverge from each other from the central bar, so that, in the event of the presence of a connection terminal block for the electric cable, this connection terminal block can easily find its place

  between its side branches if desired.

  In short, the arrangement according to the invention advantageously allows the production of a particularly advantageous cable clamp from the economic point of view as well as from the point of view of safety, minimization

  space and ease of use.

  The characteristics and advantages of the invention will moreover emerge from

  the following description, by way of example, with reference to the drawings

  attached diagrams in which: FIG. 1 is a perspective view of an electrical appliance equipped with a cable clamp according to the invention; FIG. 2 is, on a larger scale, a partial exploded perspective view of this electrical appliance, with the cable clamp which it comprises tightened on the electric cable which is connected to it; FIG. 3 is, on the same scale as that of FIG. 2, a perspective view of this cable clamp and of the part of the housing of the electrical appliance on which FIG. 4 is, on a different scale, a perspective view of this cable clamp, shown in isolation, and seen from above; Figure 5 is another perspective view, seen from below Figures 6 and 7 are views in cross section, along, each respectively, the lines VI-VI and VII-VII of Figure 4; Figure 8 is, according to arrow VIII of Figure 2, a plan view of this cable clamp, in place in the housing of the electrical device concerned, for a first orientation of the electrical cable that it encloses; Figure 9 is, on a different scale, a cross-sectional view of the assembly, along the line IX-IX of Figure 8; Figure 10 is a plan view similar to that of Figure 8, for another orientation of the electric cable; Figure 1 1 is, on the scale of Figure 9, and along the line XI-XI of Figure 10, a cross-sectional view of the assembly, for this other orientation of the electric cable; Figures 12 and 13 are partial sectional views of the assembly, along, each respectively, the lines XII-XII and XIII-XIII of Figure 1 1; Figure 14 is a cross-sectional view similar to that of Figure 1 1, for another electric cable; Figure 15 is a partial perspective view of a variant of

  realization of the housing of the electrical device according to the invention.

  These figures illustrate, by way of example, the application of the invention to

  case where the electrical appliance 10 concerned is a multi-socket base.

  This electrical device 10 therefore comprises, on the front of a housing 1 1, and, more precisely, on the upper face 12 of this housing 1 1, a plurality of wells 13 at the bottom of each of which intervenes a socket outlet 14 In the embodiment shown, the housing 11 is generally

  parallelepiped, and it is formed, on the one hand, by a base 15, which forms by itself-

  even its bottom wall 16, and which carries most of the necessary mechanisms, and, on the other hand, a cover 18, which forms its upper face 12, with the wells 13, and which is duly attached, so removable, on the

base 15.

  In the embodiment shown, the cover 18 extends over the entire height of the housing 1 1, and, as a corollary, the base 15 is reduced to

the essentials at the bottom wall 16.

  The cover 18 therefore comprises, in addition to the upper face 12, two longitudinal faces 19, and, alternately with these, two transverse faces 20. In the embodiment shown, the cover 18 fits onto the

  base 1 5, and, to do this, it has, at its periphery, a flange 22.

  The interlocking, disengageable, of the cover 18 on the base 15 can by

  example be done by snap-fastening and / or by screwing.

  The corresponding provisions not covered by this

  invention, they will not be described here.

  In practice, the electrical device 10 thus concerned is mobile, but it

  can just as easily be used at a fixed station.

  For the service of the various socket outlets 14 which it comprises, an electric cable 23 is provided, and, in the embodiment shown, it is a flexible electric cable comprising, within a sheath in

  insulating material 24, the various electrical conductors 25 required.

  Its housing 11 is therefore equipped with a cable clamp 26 suitable for holding

of this electric cable 23.

  In the embodiment shown, this cable clamp 26 intervenes at

within the housing 11.

  For example, and as shown, it is attached to the back wall

1 6 of it.

  But, of course, other arrangements are possible.

  In a manner known per se, the cable clamp 26 comprises at least one bar 28A, 28B suitable for clamping the electric cable 23, this clamping being done in practice in cooperation with the bottom wall 16 on which it is attached. To impose, on request, the electric cable 23, one or the other of at least two different orientations, the cable clamp 26 comprises, in one piece, according to the invention, at least two bars 28A , 28B, the directions of elongation of which are themselves different, namely, a bar 28A said here for simple convenience central bar and at least one bar 28B said here for simple convenience side bar, with, for its attachment to the

  housing 11 of the electrical appliance 10, at least one chimney 30.

  By direction of elongation for a bar 28A, 28B, is meant here

  the general direction in which such a bar 28A, 28B extends.

  In the embodiment shown, the cable clamp 26 comprises, in a general U-shaped configuration, three bars 28A, 28B, namely, the central bar 28A and two lateral bars 28B, and, taken individually, these various bars 28A, 28B are all substantially straight. In practice, the directions of elongation of these bars 28A, 28B are generally orthogonal to the orientations chosen as possible for

the electric cable 23.

  However, in the embodiment shown, each of the lateral bars 28B makes with the central bar 28A an angle A slightly greater than 90, deviating towards the outside as and when

  that it moves away from this central bar 28A.

  The two lateral bars 28B therefore diverge one with respect to

  The other from the central bar 28A.

  In the embodiment shown, the angle A is the same for

  one and the other of the two lateral bars 28B.

  Anyway, the two side bars 28B are, in practice,

substantially coplanar.

  The cable clamp 26 according to the invention therefore has, in the embodiment shown, a plane of symmetry M, which, perpendicular to its

  central bar 28A, passes through the central zone thereof.

  This plane of symmetry M is shown diagrammatically in lines interrupted by its trace

in figure 8.

  Apart from tilting means explained later, the underside 31B of the lateral bars 28B is substantially level with

  the underside 31A of the central bar 28A.

  But, if, in the embodiment shown, the central bar 28A has a substantially constant height throughout its length, it is not the same for the lateral bars 28B, the height of which, on the contrary,

  gradually decreases from the central bar 28A.

  For the central bar 28A, the upper face 32A is therefore

  substantially parallel to the underside 31A.

  On the other hand, for the lateral bars 28B, the upper face 32B progressively approaches the lower face 31 B as it

  moves away from the central bar 28A.

  In addition to their lower faces 31A, 31B and upper 32A, 32B, the bars 28A, 28B comprise, respectively, lateral faces 33A, 33B, which, in the embodiment, are substantially parallel to each other.

  apart from a possible molding draft.

  In the embodiment shown, the following cable clamp 26

  the invention comprises two chimneys 30.

  One of these chimneys 30 intervenes substantially at the junction of the central bar 28A with one of the side bars 28B, with a width for these bars 28A, 28B, that is to say halfway between their side faces 33A, 33B, and, similarly, the other of these chimneys 30 intervenes substantially at the junction of the central bar 28A with the other of the side bars 28B, at mid-width for these bars 28A, 28B, that is that is to say halfway between their

lateral faces 33A, 33B.

  In practice, the chimneys 30 extend substantially perpendicular to the plane of the bars 28A, 28B. At their inlet outlet 35, which is located on the side of the upper face 32A, 32B of the bars 28A, 28B, the chimneys 30 have, slightly set back with respect to this inlet outlet 35, a neck 36 of section of passage below the passage section they present in their part

  standard, for supporting the head 37 with a screw 38.

  At least one of the bars 28A, 28B of the cable clamp 26 according to the invention, and, preferably, as shown, each of these bars 28A, 28B has at least one recess 40A, 40B recessed on its face

lower 31A, 31B.

  In practice, in the embodiment shown, only one

  notch 40A, 40B is thus provided on the bars 28A, 28B.

  From one to the other of the side bars 28B, the notches 40B are

  substantially aligned with each other.

  For example, and as shown, the notches 40A, 40B have a

profile in an arc.

  They extend substantially in the middle area of the bars 28A,

  28B, halfway between the ends of these.

  In the embodiment shown, at least one of the bars 28A, 28B of the cable clamp 26 according to the invention, and, preferably, as shown, each of these bars 28A, 28B has, recessed on its underside 31A, 31B, in particular for molding reasons, a recess 42A, 42B, which results in that it forms, substantially parallel to its direction of elongation, and substantially parallel to each other, two

walls 43A, 43B.

  The notch 40A, 40B obviously affects either of these walls 43A, 43B indifferently, and the external surface of these forms the

  lateral faces 33A, 33B corresponding.

  In the embodiment shown, at least one of the bars 28A, 28B of the cable clamp 26 according to the invention, and, preferably, as shown, each of these bars 28A, 28B has, recessed on its underside 31A, 31B, a groove 44A, 44B, which, substantially parallel to its direction of elongation, extends over at least part of its length,

  substantially halfway between its walls 43A, 43B.

  For the central bar 28A, the groove 44A extends only over a part of the length, and, for the lateral bars 28B, it extends to the

  otherwise on the whole of it.

  More precisely, the groove 44A presented by the central bar 28A extends only over the middle part of its length, between the two chimneys 30, at a distance from these, and, on the contrary, the groove 44B presented by the bars lateral 28B extends over their entire length, crossing

  right through the corresponding chimney 30.

  For the central bar 28A, the groove 44A extends as close as possible to the

most internal wall 43A.

  For the lateral bars 28B, the groove 44B extends substantially to

halfway between the walls 43B.

  As already indicated above, the cable clamp 26 according to the invention

  is attached to the bottom wall 16 of the housing 11.

  It is secured to it with two screws 38, one per chimney 30.

  In practice, and as shown, the plane of symmetry M of the cable clamp

  26 then extends parallel to the direction of elongation of the housing 11.

  More specifically, the central bar 28A of the cable clamp 26 is then substantially parallel to one of the transverse faces 20 of the cover 18 of this housing 11, close to the latter, and therefore it corresponds to an axial outlet.

for the electric cable 23.

  As a corollary, the lateral bars 28B then extend slightly at an angle relative to the longitudinal faces 19 of the cover 18 of the housing 11, in the vicinity of these, and they each correspond respectively to a

  lateral outlet for the electric cable 23.

  Lids 47A, 47B are provided in correspondence on the face

  transverse 20 concerned of the cover 18 and on its longitudinal faces 19.

  These are for example knockouts or to cut.

  In FIGS. 1 and 2, the cover 47A of the transverse face 20 has been

supposedly eliminated.

  For each of the chimneys 30 of the cable clamp 26, the housing 11 has, moreover, projecting from its bottom wall 16, that is to say projecting

  on the base 15 forming this bottom wall 16, a pin 48, on which the clamp

  cable 26 is engaged by such a chimney 30.

  This pin 48, which is hollow, serves as a housing for a threaded insert 49 with

  which the barrel 50 of the corresponding screw 38 is in screw connection.

  For each of the bars 28A, 28B of the cable clamp 26, the housing 11 also has, projecting from its bottom wall 16, a rib 51A, 51B, which extends parallel to the walls 43A, 43B of such a bar 28A, 28B,

between these walls 43A, 43B.

  Along its free edge, this rib 51 A, 51 B has a notch 52A, 52B, which, like the notch 40A, 40B of the bars 28A, 28B of the cable clamp 26, has an arcuate outline of circle but

  according to a concavity which is turned in the opposite direction to that of the latter.

  The rib 51A corresponding to the central bar 28A of the cable clamp 26 extends from one to the other of two flanges 53, which, parallel to each other, and perpendicular to this rib 51A, are each respectively arranged at

  distance of the two pawns 48, between them.

  The two ribs 51B corresponding to the two lateral bars 28B

  on the contrary each extend respectively from the two pawns 48.

  Preferably, and this is the case in the embodiment shown, between the cable clamp 26 and the bottom wall 16 of the housing 11

  tilting means 54 intervene.

  In the embodiment shown, these tilting means 54 comprise, on the underside 31A of the central bar 28A of the cable clamp 26, a tilting projection 55, in the form of a dihedral, the edge of which extends parallel to the direction of elongation of this central bar 28A, on either side of each of the chimneys 30, and by which the cable clamp 26 is able to bear on the bottom wall 16 of the housing 11, and, jointly, it there is a clearance J between each of these chimneys 30 of the cable clamp 26 and the corresponding pin 48 of the housing 11, at least

  transversely to the corresponding tilt axis, that is

  say at least in a direction perpendicular to the central bar 28A, as it appears in FIG. 11 for one of these chimneys 30 and for one

of these pawns 48.

  Finally, in the embodiment shown, the housing 1 1 has, projecting from its bottom wall 16, and, therefore, projecting from the base 15 forming this bottom wall 16, a connection terminal block 56 to which each are respectively connected the electrical conductors 25 of the electrical cable

23.

  In the embodiment shown, this connection terminal 56

  extends away from the cable clamp 26.

  However, due to the divergence between the side bars 28B, it may

  desired to be more or less engaged between them.

  For the connection of the electric cable 23, it is necessary to

  remove the cable tie 26.

  It is indeed necessary that the electric cable 23 is engaged under

  one or the other of the bars 28A, 28B of this cable clamp 26.

  After connecting the electric cable 23, the cable clamp 26 is

put back in place.

  In FIGS. 1 to 9, it has been assumed that the electric cable 23 is

  engaged under the central bar 28A of the cable clamp 26.

  The orientation imposed on the electric cable 23 then corresponds to a

axial outlet for this one.

  As will be noted, the walls 43A of the central bar 28A of the cable clamp 26, on the one hand, and the corresponding rib 51A of the housing 11, on the other hand, then impose on the electric cable 23 a zigzag path , at

benefit from its restraint.

  In FIGS. 10 to 14, it has been assumed, as a variant, that the electric cable 23 was engaged under one or the other of the lateral bars 28B of the

cable clamp 26.

  The orientation thus imposed on the electric cable 23 then corresponds to a

side outlet for this one.

  As before, and as can be seen in FIG. 13, the walls 43B of the side bar 28B concerned, on the one hand, and the corresponding rib 51B of the housing 11, on the other hand, impose on the electric cable

23 a zigzag path.

  Preferably, for such a lateral outlet of the electric cable 23, the tightening of the screws 38 is continued until the cable clamp 26 bears on the

  bottom wall 16 of the housing 11 by its tilting projection 55.

  However, by construction, this tilting projection 55 is located away from the axis of the pins 48, and, therefore, away from the plane along which the screws 38

exert their effect.

  As a result, the cable clamp 26 rocks more or less in the direction of the notch 52B of the ribs 51B, if, as shown in FIG. 14, the electric cable 23 has a diameter sufficiently small for it to make contact with the bottom wall 16 of the housing 11 before contacting it. Of course, the tilting of the cable clamp 26 can be done in the opposite direction to the previous one, if, on the contrary, and as shown in FIG. 11, the electric cable 23 has a sufficiently large diameter for it to make contact with him before making contact with the back wall 1 6

of the housing 11.

  However, in all cases, the electric cable 26 is energetically tightened. In both cases, too, the tilting of the cable clamp 26 is authorized by the groove 44B of the side bars 28B, these

  engaging by this groove 44B on the ribs 51 B of the housing 11.

  It should be emphasized, moreover, that, if desired, the cable clamp 26 according to the invention advantageously makes it possible to clamp simultaneously, in at least two different directions, at least two separate electrical cables, namely an electrical power cable and at least one electrical transplanting cable. In the variant embodiment shown in FIG. 15, the bottom wall 16 of the housing 11 has, projecting, at the base of the pins 48, a rib 58 which extends on either side of the pins 48, going , especially,

  to the flanges 53 flanking the rib 51A at its ends.

  This rib 58 is intended to serve as a support for the tilting projection of the cable clamp 26, the tilting plane of which is thus slightly raised, without the mode of implementation of this cable clamp 26 being

found modified.

  It is therefore in a broader sense that "bottom wall 16" should be understood, in particular when it is indicated that the tilting projection 55 of the cable clamp 26 bears on this bottom wall 16, the latter in front then be

  understood as possibly comprising for this purpose the rib 58.

  In addition, in this alternative embodiment, other ribs have been provided projecting from the bottom wall 16 of the housing 11, for the stiffening of

this bottom wall 16.

  Of course, the present invention is not limited to the forms of

  realization described and represented, but includes any variant.

  In particular, instead of having a tilting projection on the cable clamp, the tilting means intervening between this cable and the housing

  could just as well include a tilting projection on this housing.

Claims (23)

  1. Cable clamp, which is intended to equip the housing of any electrical appliance, and which is of the type comprising a bar suitable for tightening the electrical cable to be connected to this electrical appliance, characterized in that, to impose, on request, to the electric cable (23) concerned, one or the other of at least two different orientations, it comprises, in one piece, at least two bars (28A, 28B) whose directions of elongation are themselves different, namely, a bar (28A) here called central bar and at least one bar (28B) here called side bar, with, for its attachment to the housing (11) of the electrical appliance (10) , at least one chimney (30). 2. Cable clamp according to claim 1, characterized in that the chimney (30) extends substantially perpendicular to the plane of the bars (28A, 28B).   3. Cable clamp according to any one of claims 1, 2,   characterized in that, at its inlet outlet (35), the chimney (30) has a neck (36) with a passage section smaller than the passage section   that it presents in its current part.   4. Cable clamp according to any one of claims 1 to 3,   characterized in that the chimney (30) intervenes substantially at the junction of   the central bar (28A) with the lateral bar (28B).   5. Cable clamp according to any one of claims 1 to 4,   characterized in that the side bar (28B) made with the central bar (28A) an angle (A).   6. Cable clamp according to claim 5, characterized in that the lateral bar (28B) makes with the central bar (28A) an angle (A) slightly higher than 90.   7. Cable clamp according to any one of claims 1 to 6,   characterized in that at least one of the bars (28A, 28B) has at the   minus a notch (40A, 40B) on its underside (31A, 31B).   8. Cable clamp according to claim 7, characterized in that each of the bars (28A, 28B) has at least one notch (40A, 40B) on its underside (31 A, 31 B).   9. Cable clamp according to any one of claims 1 to 8,   characterized in that at least one of the bars (28A, 28B) has, recessed on its underside (31A, 31B), a recess (42A, 42B), which results in that it forms, substantially parallel to its stretching direction,   and substantially parallel to each other, two walls (43A, 43B).   10. Cable clamp according to claim 9, characterized in that each of the bars (28A, 28B) has, recessed on its underside   (31A, 31B), a recess (42A, 42B).   11. Cable clamp according to any one of claims 1 to 10,   characterized in that at least one of the bars (28A, 28B) has, recessed on its underside (31A, 31B), a groove (44A, 44B), which, substantially parallel to its direction of elongation, s 'extends over a part at least its length.   12. Cable clamp according to claim 11, characterized in that each of the bars (28A, 28B) has, recessed on its underside   (31A, 31B), a bleeding (44A, 44B).   13. Cable clamp according to claim 12, characterized in that, for the central bar (28A), the groove (44A) extends only over part of the length, and, for the side bar (28B), it extends over the whole of it.   14. Cable clamp according to any one of claims 1 to 13,   characterized in that, in a general U-shaped configuration, it has three bars (28A, 28B), namely, a central bar (28A) and two side bars (28B).   1 5. Cable clamp according to claims 6 and 14, taken together,   characterized in that the lateral bars (28B) diverge from one another   The other from the central bar (28A).   16. Cable clamp according to claims 4 and 14, taken together,   characterized in that it comprises two chimneys (30), one at the junction of the central bar (28A) with one of the lateral bars (28B), the other at the junction of this central bar (28A) with the other side bars (28B).   17. Cable clamp according to claims 13, 14 and 16, taken   jointly, characterized in that the groove (44A) presented by the central bar (28A) extends only over a median part of its length, between the two chimneys (30), at a distance therefrom, and the groove (44B) presented by the lateral bars (28B) extends over their entire length,   crossing the corresponding chimney (30).   18. Cable clamp according to any one of claims 14 to 17,   characterized in that it has a plane of symmetry (M), which, perpendicular to   its central bar (28A), passes through the median zone thereof.   19. An electrical appliance of the kind to which an electric cable is connected,   with, equipping its housing, for the maintenance of this electric cable, a clamp   cable, characterized in that this cable clamp (26) conforms to one   any of claims 1 to 18.   20. Electrical apparatus according to claim 19, characterized in that, its housing (11) having a bottom wall (1 6), the cable clamp (26) is   reported on this bottom wall (16).   21. An electrical appliance according to claim 20, characterized in that, for each of the chimneys (30) of the cable clamp (26), the housing (11)   has, projecting from its bottom wall (16), a pin (48), on which the clamp   cable (26) is engaged by such a chimney (30).   22. Electric apparatus according to any one of claims 19 to   21, characterized in that, for each of the bars (28A, 28B) of the clamp   cable (26), the housing (11) has, projecting from its bottom wall (1 6), a rib (51A, 51B), which extends parallel to the walls (43A, 43B) of a   such bar (28A, 28B), between these walls (43A, 43B).   23. An electrical device according to claim 22, characterized in that each rib (51 A, 51B) that comprises the housing (11) has a   notch (52A, 52B) along its free edge.   24. An electrical appliance according to any one of claims 20 to   23, characterized in that, between the cable clamp (26) and the bottom wall (1 6) of the   housing (11), there are tilting means (54).   25. An electrical appliance according to claim 24, characterized in that the tilting means (54) comprise, on the underside (31A) of the central bar (28A) of the cable clamp (26), a tilting projection (55 ) by which the cable clamp (26) is able to bear on the bottom wall (16) of the housing (11), and, jointly, there is a clearance (J) between each of the chimneys (30) of the cable clamp (26) and the corresponding pin (48) of the housing (11), at least transversely with respect to the corresponding tilting axis.