FR2509904A1 - WINDING BOX - Google Patents

Abstract

1. A winding packing member for winding a winding wire on a magnetic core of the kind comprising an elongate body portion which is adapted to be placed in cornerwise relationship on an edge of said core characterised in that it comprises at least two radially projecting retaining elements (20) in combination with recesses (11) in the body portion, which are adapted to fit on to the retaining elements (20, 20') of a subjacent packing member (31a, 33a).

Description

The present invention relates to a winding wedge

  for winding a winding wire on a magnetic core.

  Such holds are generally of the kind comprising

  an elongated body adapted to be wedged on each year

  a wedge to allow the direct winding of a wire on the latter These known wedges have the disadvantage of being

heavy and expensive.

  Pussi, a first object of the Sixth century to offer a wedge, free of these inco nv in i r tso

  A second object of the present invention is to propose

  a wedge allowing the separation of various layers of winding or of various windings on the same nucleus Indeed, according to the usual techniques, the various windings of a transformer or of an inductor are in

  wound on top of one another on a bobbin

born.

  The use of these winding techniques limits the density of

  current in the windings due to the poor heat dissipation quality of this type

winding.

  In order to improve dissipation, it was proposed

  to separate the winding layers or wind them up

  and leave a ventilation channel between them.

  There are already devices allowing such separation In généaral, they comprise a winding cage composed of a frame can 8 be nested on a magnetic core of appropriate dimensions and around which a first winding can be wound * The cage comprises various points of its arches, slides protruding outwards, in which pezt may be slipped wedge sticks These rods, arranged between each layer, thus allow leash:

  a ventilation channel between them.

  This technique is not applicable for a direct winding on a magnetic core, because in this case, we are trying to do without a body or cage winding Moreover, the use of this technique involves the realization a cage for each type of core, which makes it

  relatively expensive consequence.

  The invention proposes in these perspectives, a hold of the kind considered, characterized by the combination of at least

  two retaining protrusions with suitable recesses

  to fit on the retainers of an underlying wedge.

  While lightening the body of the hold, this

  It allows a direct winding on a magnetic core, several ventilation channels that can be arranged between the various layers of the winding, without coil bodies or

winding cages.

  The features and advantages of the present invention

  will emerge from the following description,

  with reference to the accompanying drawings in which: Figure 1 is a side view and in section according to the

  line I-I of FIG. 2 of a shim according to the present invention.

tion;

  FIG. 2 is an elevational and sectional view of

  the wedge along the line II-II of Figure 1; Figures 3 and 4 are views in partial, transverse and longitudinal section illustrating the use of

shims according to the present invention.

  According to the embodiment chosen and represented

  in FIGS. 1 to 4, a shim 10 is formed of an allon-

  ge having 11 recesses delimited by blanks 17, 17 'and closed at the ends by two end walls 12, 12'. A median veil 14 is disposed between the walls 12, 12 'inside the body, so that said body is divided lengthwise into two symmetrical parts, the recesses 11 extending from both sides of the body. other of said median veil The veil 14 is indented at 15 in its thickness,

  and the indentation 15 is in the form of a rectangular isosceles triangle

  The recesses 11 are delimited by a plurality of transverse partitions 16, 16 'disposed within the

  body between the veil 14 and each of the blanks 17, 17 ', to

regular hours

  The lower edges 24, 24 'of the partitions 16, 16'

  with the notch 15 so that the edges 24, 24 'and the notch 15 form a rectangle isosceles triangle whose base is between the edges 25, 25' of the blanks 17, 17 'The body is thus adapted to be placed in corner on

  an edge, while being partially hollowed out.

  According to the embodiment shown, each

  end of the body is provided with a protruding

  naked 20, 20 'in the shape of cheeks, these cheeks being indented in

  their middle in 21, 21 'The notches 21, 21' are rectangular

  The retentions 20, 20 'are offset relative to the ends of the body, so that the outer faces 22, 22' of the retentions 20, 20 'are substantially in line with the

  internal faces 13, 13 'of the walls 12, 12'.

  In FIGS. 3 and 4, it appears that the shim is

  marked by the combination of salient points

  20, 20 ', with the recesses 11, adjacent the walls 12, 12', which are adapted to fit on the elements of

  retained 20, 20 'of an underlying wedge, the elements

  retaining lobes 20, 20 'having the cheek shape of a profile complementary to that of the recesses 11, with a

  notch 21, 21 'interlocking on the median veil 14 of -

  the underlying wedge (see for example the embedding of the

hold 33 on hold 31 (a).

  In a first mode of use of the decree

  and shown, a wedge is arranged at the corner on each edge of a magnetic core.

  winding wire around the core provided with wedges.

  The retentions 20, 20 ', in the form of cheeks, prevent the winding wire from sliding, this avoiding having to tie

  the last turns of each layer, which makes it possible

  winding time compared to

the prior art.

  A second mode of use is illustrated in FIGS. 3 and 4. Four wedges 31a, 31b, 31c, 31d are arranged in a corner on the edges 30a, 30b, 3c, 30d of a magnetic core.

  The winding of a first layer 32 is then carried out.

  We then insert the holds 53 a, 33 b, 33 c, 33 d respec-

  on the wedges 31a, 31b, 31c, 31d We then proceed to the winding of a second layer 34 According to the example chosen

  and represented, we will also do the same for the bo-

  hiring a layer 36 by embedding the shims 35a, 35b, 35c, 35d on the shims 33a, 33b, 33c, 53d.

  Shims 31a to 3Ld, 33a to 33d, 35a to 35d are immovable.

  radiated by the coil winding voltage

32, 34, 36.

  In FIG. 3, it can be seen that the median veil 14 of the various wedges 33 and 35 cooperates with the indentations 21 of the retainers 20, respectively, of the shims 31 and 33, ensuring their

  relative immobilization in rotation -

  In FIG. 4, it can also be seen that the retentions' and 20 'of the shims 31 and 33 cooperate with the walls 12, 12' of shims 33 and 35, so that the shims are

  immobilized with respect to each other in a longitudinal direction

  tudinal. Thus, according to the invention, the various winding layers obtained are separated by aeration channels.

  40, 41 and 42, thereby raising the density of

  in the winding wire in relation to that possible

  in a conventional winding where the various layers are col-

to each other.

  In addition, according to the invention, the wedges cooperate

  with each other in such a way that they can not slip

  on one another, thus fixing, once and for all, the winding layers in the desired position, without

  risk of seeing these layers accidentally

  so much against each other, thus destroying

winding.

  Of course, the invention is not limited to the embodiments described and shown, but encompasses all variations in execution, without departing from the scope of

the present invention.

  In particular, the wedge, described in support of FIGS. 1 to 4, has been represented with a notch 15 in the form of a right isosceles triangle thus allowing the adaptation of

  wedge wedge on a rectangular section core.

  It is obvious that the shape of the notch 15 can be modified to allow the adaptation of the wedge on the edges of cores whose planes form an angle

other than 900.

  In addition, according to the embodiment shown, the blanks 17, 17 'of the body cooperate with a median veil 14 and partitions 16, 16', thus making it possible to produce a

partially hollow body.

  The invention can not be limited to the provision

  presented, a partially hollowed body being obtainable by other means known to those skilled in the art. Similarly, the shape of the retentions 20, 20 ', indented in

  21, 21 ', was of course determined according to the

  the median veil 14 and the blanks 17, 17 '.

  the shape of the reservoirs 20, 20 'would be modified accordingly, so as to permit cooperation

  described in support of Figures 3 and 4.

Claims (5)

  1 Winding shim for winding a winding wire   on a magnetic core of the genus with an allon-   ge adapted to-be wedged on an edge of said core, characterized in that it comprises at least two retaining elements (20) in combination with recesses   (11) of the body adapted to fit on the elements of re-   holding (20,20 ') of an underlying wedge (31 a, 33 a).   2 Winding wedge according to claim 1, characterized   in that said recesses (11) are elongated and partitioned transversely.   3 winding shim according to one of claims 1,   2, characterized in that the recesses (11) extend from   on either side of a median veil (14).   4 Winding wedge according to claim 3, characterized   in that said retaining protruding elements (20, ') have the cheek shape of a complementary profile   to that of the recesses (11) with a recess of embol-   (21) on the middle web (14) of a subsequent wedge (33 a, 35 a).   Winding wedge according to one of Claims 1 to 4, characterized in that the recesses (11)   being confined by two end walls (12,12 '), the ele-   retaining projections (20, 20 ') are arranged in such a way that their outer face (22, 22') is placed substantially   in line with the internal face (13,13 ') of the end wall. the corresponding (12,12 ').