FR2662870A1 - THREE - PHASE CURRENT GENERATOR FOR VEHICLES OR THE LIKE. - Google Patents

Abstract

Three-phase current generator for vehicles, or the like, characterized in that it comprises a connection block (11) formed integrally on the printed circuit board (10) and offset radially with respect thereto, this block comprising at least one threaded stud projecting radially outwards beyond the cooling plates, and also comprising on both sides guides for edges of a cutout, surrounding the connection block (11), d 'a protective cover, which is placed on the rectifier device and engaged with it.

Description

"Three-phase current generator for vehicles, or the like" The invention

part of a current generator

  three-phase for vehicles, or the like, with a provision

  rectifier which consists of two plates of

  cooling arranged parallel to each other

  be and receiving positive or negative diodes respectively with their housings, and by a printed circuit board (connection plate) arranged

  between the cooling plates as a material

  insulating line and in which conduits are coated

  for the connection of the diodes therebetween and

  with the connection wires of a stat winding

  tor of the three-phase current generator.

  In a known three-phase current generator of this type (German utility model G 87 11 417), the rectifier device consists of cooling plates arranged in sandwich and parallel to each other at a certain distance for the rectifier diodes, plates between which is a printed circuit board or connection plate in

  insulating material, in which are wrapped

  electrical conductors for connecting diodes

  between them and with corresponding connection wires

  of a stator winding of the generator

three-phase current.

  In this document, a connection bolt for the connection is used for this known rectifier device, outside the two cooling plates of the rectifier diodes placed parallel to each other at a certain distance.

  designated by B + according to DIN standard, this bolt being

  darkened by knurling in a corresponding hole in the external cooling plate, and applied by the annular shoulder of the screw head against the

  rear side of the cooling plate This plug

  lon is also, for safety, screwed by a nut on the cooling plate The rectifier device is mounted on what is called side B of the three-phase current generator After mounting the generator in the vehicle, a cable connection for the positive pole of the vehicle battery is

  screwed to the free end of the bolt.

  In another three-phase current generator

  constituted in this way, with a device

  sor, it is also known (EP-A 2 O 199 504) to bring

  outwards the connection designated by B + a-

  close to the DIN standard of the rectifier device placed in the generator housing, first of all by placing axially, a connection bolt in the

  positive cooling plate of the device re-

  blocker and screwing it to the generator housing

  if with a connection angle which, as a bent retaining plate, carries a threaded pin directed radially outwards.

  connection is then encapsulated except for the gou-

  jon threaded by a piece of insulating material which pro-

  protects the connection with respect to the generator casing placed at ground potential Such a radial connection is used in particular when an axial connection is made difficult or impossible due to the lack of space against the front face of the generator

  after mounting in the motor vehicle.

  It is finally known (DE-OS 35 33 065) to

  align an adapter for a three-phase current generator so that this adapter is able,

  thanks to suitable mounting on a generator

  three-phase rant with axial outputs by guide

  jons for electrical connections, convert

  these connections on radially extending outputs-

  This adapter then consists of one piece

  of plastic form in which are inserted

  rees electrically conductive flat parts, preferably constituted by a suitable sheet metal, and by exit holes for axial exits by initial studs These flat parts extend to a front wall ending radially in the adapter and forming therein outputs by studs

protruding radially.

  The present invention aims to constitute, in a reliable and as simple as possible, the

  three-phase current generator connections to core

  outward in combination with the arrangement

  protective cover for the device

  blocker on the three-phase current generator.

  This goal is achieved, in that the generator

  is characterized in that it comprises a connection block

  cord formed in one piece on the circuit board

  baked printed and radially offset from it

  the latter, this block comprising at least one threaded stud projecting radially outward beyond

  cooling plates and comprising, also

  on both sides, guides for edges of

  edges of a cutout, surrounding the connection block

  protective cover, which is placed in place

  this on the rectifier device and engaged with this-

him.

  In the three-phase current generator

  form of the invention, with the following characteristics

  above indicated, there is the advantage that without additional expense, an integrated radial connection is possible, even if desired for the whole

  of the usual three existing connecting studs-

  also in a three-phase current generator B +, D +

  and W, although, of course, a cover cap

  otherwise provided, should in itself prevent the radial exits of the studs to which the corresponding electrical connections of the network wiring

edge must be connected.

  The invention however succeeds in connecting the corresponding area of the protective cover in an elegant transition with a connection block which itself is part of a single piece of the printed circuit board or connection plate provided in the rectifier, to which case, we are also certain that

  the protective cover can be easily attached

  full and without problem on the rectifier device no-

especially by tightening.

  Advantageous supplements and improvements

  The characteristics indicated above are possible:

  According to another characteristic of the

  vention, the connection block includes threaded studs embedded in the material of the

  printed circuit board that protrude radially-

  outwards, and also includes nerves

  protective sleeves preferably surrounding these two threaded studs on both sides, and which also in one

  holding with the material of the printed circuit board

  me protrude radially outward from

of it.

  According to another characteristic of the

  vention, next to two con- nected connecting studs

  tituant the connection poles, a third connection stud constituting the connection pole is disposed in the area of the connection block, this stud being placed and supported in a housing formed by protective ribs projecting radially and extending axially , and this stud itself being made integral (by riveting), by means of a bent retaining plate, with the plate

positive cooling.

  According to another characteristic of the

  vention, the threaded studs surrounded by the insulating material of the printed circuit board and the connection block, and provided for connection D + and

  for W- connection, each have a shoulder-

  protruding median and a tapered pin connects to it

  cording and which, while simultaneously ensuring the con-

  tact with electrically conductive tracks to

  inside the material of the printing circuit board

  mé is also coated in it.

  According to another characteristic of the

  vention, the connection block in combination with the printed circuit board has at the edge, longitudinal guide bars which, as

  of a drawer, receive and protect the edges of

  hard turned towards them from the cutout of the hood

  protection, when installing it.

  According to another characteristic of the

  vention, the protective cover is stapled on the device.

  positive rectifier by means of locking tabs

  in one piece likely to flex towards

  outside and constituting staples supports.

  According to another characteristic of the

  vention, the locking tabs are

  killed by cutouts on both sides, from the ma-

  material of the side walls of the protective cover and

  have stop lips projecting inward

  behind, which engage the ar-

  edge of the positive cooling plate

  ve of the rectifier device turned towards these nozzles.

  According to another characteristic of the

  note, the protective cover is kept under con-

  moves on the rectifier device, because by using the elasticity properties of the bottom of the protective cover, support pins leave from it in the peripheral zone, which are then applied

  under pressure on the positive cooling plate

  ve facing towards them of the rectifier device, while simultaneously the stop spouts engage

  behind the edge edges of the cooling plate

dissement.

  According to another characteristic of the

  vention, screw fastenings are provided for the protective cover through which screws

  are guided to threaded holes in the device

tif rectifier.

  According to another characteristic of the

  vention, in the area of the connection block are arranged three connections by threaded studs succeeding each other along the periphery of the printed circuit board to constitute the connections D +,

W and B +.

  According to another characteristic of the

  vention, the protective hood in the uncovering area

  pe for the connection block has, for its part, parts of material projecting radially coming in addition to or in addition to the ribs of

protects the connection block.

  According to another characteristic of the

  vention, the connection block further comprises,

  a pronounced axial extension in the form of a skirt

  at the same time constituting, at this location, an overlap for the rectifier device. Particularly advantageous is the blocking of the protective cover in its engaged state with the

  straightening device using the existing elasticity

  aunt usually in parts injected in ma-

  plastic, due to the fact that the bottom plate of the

  protective pot is kept under tension by support pins which bear on one of the printed circuit boards of the rectifier device It is in

  consequence excluded that even in the case of a use

  extremely rough, the protective cover can

  detach from the three-phase current generator.

  It is finally advantageous that when the protective cover is put in place, these edge edges

  surrounding the connection block of the circuit board

  cooked prints are received and maintained in an ana-

  accommodates a drawer in block guides, so

  that the printed circuit board with its connector block

  cordage, assumes in this area, the recovery of the rectifier device that also provides the protective cover In this case, the cut of the protective cover surrounding the connection block of the

  printed circuit board extends over an angular area

  notable area, because in an advantageous embodiment, all three connection studs integrated in the printed circuit board of the rectifier for connections D +, B + and W are housed in the block

connection.

  Locking the protective cover with

  the casing of the three-phase current generator, special-

  with one of the cooling plates available

  rectifier, performed by means of at least three clip stops distributed over the periphery

  of the protective cover and the spouts of which protrude

  inwards, snap onto the edge edges placed opposite and produced in an appropriate

  requested from the positive cooling plate of the

positive rectifier.

  Examples of embodiments of the invention are shown in the accompanying drawings and will be

  set out in more detail in the description below.

  Figure 1 shows in top view, a

  possible shape of the printed circuit board

  killed by an appropriate insulating material (plas-

  tick), the cooling plates being located

  above and below the printed circuit board being removed, Figure 2 shows the circuit board

  printed in figure 1, seen from the left side, with representation

  feeling of the area of the connection block projecting radially, the other remaining parts being removed, FIG. 3 is a section along the line III-III in FIG. 2, FIG. 4 is a section along the line IV IV in FIG. 2, FIG. 5 is a section along the line VV in FIG. 2,

  Figure 6 shows the device re-

  blocker with the protective cover in place,

  so that the connection block, protruding ra-

  both side and side, from the circuit board im-

  awarded, is visible, Figure 7 is a side view of the left side of the representation in Figure 6 and shows the

  protective cover raised from the connection block area

  cord, while only this connection block area and the corresponding cutout of the protective cover are shown respectively,

  while the other parts are deleted.

  The basic idea of the present invention is

  is to be achieved by an appropriate integrated design

  required from the printed circuit board between the two cooling plates of a rectifier device, in an alternating current generator, both the radial connection for the electrical connections,

  for example an on-board network, starting from the general-

  tor, that also to allow the fixation of a ma-

  appropriate cover.

  The basic constitution of the generator

  three-phase current is then, in the manner per se

  bare, as described, including the structure of the rectifier device, in the utility model already mentioned previously G 87 11 417, that is to say in

  with regard to the rectifier device, with the

  position of the printed circuit board 10 shown

  shown in FIG. 1, sandwiched between two upper and lower metallic cooling plates, not shown, which extend parallel to the printed circuit board 10 and parallel to each other at a certain distance The necessary number of

  positive diodes is then placed on a first plate

  that positive cooling, and the number needed

  a pair of negative diodes is placed on the negative cooling plate located at the rear when it is viewed in the usual way from the protective cover fitted. The connections of these diodes are then essentially obtained by means of the printed circuit board, and

  for this purpose, the first connections of the diodes ne-

  positive and positive, namely the connections of

  housings, are carried out with the cooling plates

  The respective connections and the other connections start from the cooling plates towards the corresponding connection links of the printed circuit board.

  With the exception of the area of the connection block

  dement electric 11 projecting radially outside, to the left in the plane of Figure 1, the constitution of the printed circuit board is

  consequently of secondary importance for the

  vention and therefore does not need to be described in detail

  tail We see in figure 1, for example on the border-

  re of the printed circuit board, connectors to

  pinches 12 placed outside, which after mounting

  of the rectifier device on the three-phase current generator, are electrically connected to suitable connection wires of the winding of the

  stator We can also see, pin connectors

  cements 13 placed inside which are used to receive connections for rectifier diodes, this

  also not needing to be discussed further

  begging. In Figure 1, we can see in dashes the internal layout of electrical conductors inside the plastic casing of the printed circuit board 10 made of an insulating material

  appropriate, these conductors going up to the

  electrical elements by studs of the connection block

  11, so that there is a first connection thereon

  cord by threaded stud 14 projecting radially

  Lement outwards, for pole D +, a second connection by threaded stud 15 for pole W and a receiving zone 16 prepared to receive the pole of connection D +, to which we will return again briefly below. area of the connection block 11 deviating radially from the printed circuit board 10, came in one piece with the

  material of this plate, so is integrated into it.

  It is therefore less the connection studs 14, 15 and 16 for the electrical connection links which project radially outwards than the protective ribs or separating plates 17, 18,

  19 and 20, surrounding these connections and protecting them

  giant of some measure, which protrude radially-

  outwards and which also have an extension

  predefined axial sion, partially with curves

  res in the shape of a circular arc 17 a, 20 a, so that

  the nuts to be placed on the studs fi-

  strips can be screwed and tightened with threads

  corresponding plug-in on screwing tools.

  The entire area of the connection block 11 also has a predefined axial extension and thus forms a

  partial axial skirt which, in the connection area

  provides a protective covering outwards

  laughing of the rectifier device which is ensured, moreover, by the material removed at this location

  (cutout 26) of the protective cover material.

  With the exception of the connecting stud for

  the connection pole B +, the other studs

  cord are held in the connection block because they are embedded by injection into the plastic material of the circuit board

  printed and / or connection block 11 in one color

  nant, for example as shown in the details in Figures 4 and 5 Each of the connecting studs 14 and 15 therefore comprises, in a transition in one piece from the threaded portion projecting outwardly, an annular shoulder in

  projection 14 a, i 5 a which then turns into the

  tapered pin 14 b, 15 b, on which

  is then applied or fixed electrically-

  conductive, the connection of electric conductors

  than metallic, for example in the form of tongues ve-

  from the printed circuit board.

  It can be seen that the embedding by injection of the

  connecting stud shouldered in the material

  plastic material is such as a loosening or separation

  ration is excluded The median annular projection 14 a, a of each threaded stud can then, moreover, have an irregular external contour, for example

have a quadrangular shape.

  For special reasons, which correspond-

  tooth to a consolidation, resistant to bending and

  providing protection against shaking,

* B + cord, the B + 22 stud is fixed to the plate

  positive cooling by means of a hand plate-

  your angled 23, which is in turn directly attached to the positive cooling plate by means of at least one rivet 24, in which case the

  connection block 11, on the circuit board in-

  integrated, then simply constitutes a pocket-shaped guide for receiving and supporting the lining of

connection B +.

  As the electrical connections of the connection block 11, starting radially in this way from the printed circuit board, must naturally pass through the edges of a cover cap 25

  (see figure 7), which covers the outside of the

  rectifier and is placed thereon, this cover

  cover includes in the area of the connection block

  dement 11, the cutout 26 (FIG. 7) so that, in other words, the connection plate, in this connection zone, assumes itself the covering otherwise produced by the covering cover, and

  at the same time ensures the electrical separation of the

ropes.

  In this case, a part is still provided

  regularity which consists in that, for anchoring and securely fixing the protective cover 25, in particular on the edge transition zone towards the connection block 11, reciprocal engagement or anchoring means are provided which protect the two edge edges 26 a, 26 b, which are also completely open,

  of the cutout 26 of the protective cover.

  The example of embodiment shown is pre-

  seen in such a way that when installing the ca-

  protective pot 25 on the rectifier device, the edge edges 26 a, 26 b of the cutout are housed and protected like a drawer For this purpose, there are provided, in the area of the connection block 11, guide bars 27 a, 27 b in one piece

  with this block which present, on both sides,

  longitudinal grooves 28 in which come in

  grip of the edge bars produced in a

  additional on the edge edges 26a, 26b of the cutout 26 of the protective cover, so that at this

  place, an introduction of the protective cover ana-

  log to that of a drawer, is possible The guide bars 27 a, 27 b then simultaneously engage behind the edge zones correspondingly thickened with the opening of the protective cover,

  and thus protect it by prohibiting opening

  side view The area of the connection block 11 extends

  then tends with its corresponding protective ribs

  dantes 17, 18, 19, 20, outwards beyond the circular outline of the protective cover 25, as

  can see it in the best conditions at the fi-

  gure 6, where it is also indicated that in total, three

  threaded studs 14, 15 and 22 project outwards

  for the corresponding connections of the general

three-phase current tester.

  Another advantageous embodiment of the present invention further consists in that, for the attachment of the protective cover 25, this is engaged with the rectifier device, and this is done in a particular embodiment, in that that there are staple supports on the protective cover which are locked by spouts on the

  edges of the cooling body being, pre-

  reference directly in front, therefore of the plate of re-

  positive cooling (not shown) when coming

taken behind these edges.

  It goes without saying that as also in

  the case of the guide edges 27 a, 27 b of the coupling block

  cord 11, the staple supports (or precisely the guide bars) can also be fixed

on the other respective part.

  The preferred arrangement of the grab supports

  fes on the protective cover is especially visible in Figures 6 and 7 In the radial area of the wall of the protective cover, tabs 31, distributed over the periphery, are released by incisions a, 30 b on both sides These tabs directed to

  the interior has a projection 32 in the form of a beak.

  These tabs are therefore, where they end towards the

  bottom or to the left in Figure 7, the two in-

  cisions 30 a, 30 b, in transition in one piece with the side wall, for example circular, of the protective cover, they nevertheless continue beyond the region of the snap-fit lugs 32 upwards or

  well in figure 7, to the right, what this figure

  re does not show Completing the annular wall of the

  protective pot 25 at this location, the staple support tab 31 going upwards is taken up as shown in FIG. 6 in a recess 33, of

  so that when the protective cover is put in place

  this and anchored, and that in particular the spouts 32 engage behind the edge of the positive cooling plate, it is possible to put the finger between the recess 32 and the tongue 31 thus extended and

  push this tab outward

  tion of arrow A (Figure 6), so that the spouts

  snap free from the cooling plate

  and that the protective cover can again

be taken.

  In this context, another form of realization

  sation of the present invention consists

  in that the protective cover 25 anchored by the

  median of the tabs 31 of the support of staples on the

  positive cooling plate, installed under con-

  drag on the rectifier device and this,

  ference, using the elasticity of the bottom plate of the protective cover For this purpose, from the bottom of the protective cover, which is visible by its other face in FIG. 7, and preferably from the peripheral border area of this bottom, leave the support pins 34 directed towards the inside of the cover, and which at the moment when the snap-fit spouts 32 come into

  taken behind the edge edges of the re body

  positive cooling, apply under pressure

  be the side of this cooling plate on the opposite side, so that it is necessary to deform

  somewhat the bottom plate so that the spouts

  clicks effectively ensure locking This results in deformation of the protective cover which, even if it is very slight, means that this cover is then under tension and rests firmly and cannot be detached by external influences on the rectifier device. possible only when the tabs 31 of the staple supports

  are pushed outwards as before men-

tionné.

  It is possible on the upper edge edge

  lower 26 c, visible in FIG. 7, of the cutout 26, for the connection block, to still have wall parts in one piece with the cover

  protection and projecting radially outwards

  laughing, which then obviously complement the protective ribs 17, 18, 19, 20 of the connection block and

  that protect connections properly.

  These projections may also have openings through which electrical connection links pass. This depends to a large extent on special requirements and on the place where the

three-phase current generator.

  In general, there is still room for-

  draw attention to the fact that the printed circuit board itself has only a reduced axial thickness,

  in any case only sufficient for the connections

  electrical elements produced in the form of flat strips

  tes, can be coated and isolated from each other inside this plate, while in the area of the connection block, this itself has a pronounced axial extent, and therefore constitutes a

  part of the radial wall over a predetermined axial length

  finished, from which then protrude in a single

  outwards, the various protective ribs, while, simultaneously, the bars

  are formed on the two edge edges-

  re In this way, the connection block takes care by this axial extension in the form of a skirt, the area of the cut and the covering of the rectifying devices at this location, which strictly speaking

  should be the responsibility of the protective cover, the-

  which however must include, at this location a

  cutout for the radial passage of the connection block

  is lying. It is finally possible to further block the protective cover on the rectifier device using screw fasteners For this purpose, domes can be formed from the connection plate towards the protective cover, domes in which can be then

  screwed, from the outer face of the pro-

  tection, screws passing through holes in this cover. All the features mentioned in

  description, claims and drawings may

  may be essential for the invention whether they are considered in isolation or also according to a

any combination of them.

Claims (12)

  1. Three-phase current generator for vehicle   hicules, or the like with a rectifier device which consists of two cooling plates arranged parallel to each other and receiving, respectively, positive or negative diodes   with their housings, and by a circuit board im-   award-winning (connection plate) arranged between the plates   ques cooling as an insulating material, and in which are coated conductors for connecting the diodes therebetween, and with the wires   for connecting a stator winding of the genera-   three-phase current generator, generator characterized in that it comprises a connection block (11) formed integrally on the printed circuit board (10) and offset radially with respect thereto, this block   comprising at least one threaded stud (14, 15, 22) made   radially projecting outwardly beyond the cooling plates and also comprising on both sides, guides for edge edges (26 a, 26 b) of a cutout (26) surrounding the block of   connection (11), a protective cover (25), the-   which is set up on the rectifier device and engaged with this one.   2 Three-phase current generator according to the   claim 1, characterized in that the connection block   cord (11) comprises threaded studs (14, 15) embedded in molding in the material of the printed circuit board (10) and which project radially outwards, and also includes protective ribs (17, 18, 19, 20) preferably surrounding the two sides with these threaded studs, and which also   in one piece with the material of the ring plate   baked imprint (10) project radially outward from there.   3. Three-phase current generator according to   either of claims 1 or 2, character-   se in that beside two connection studs (14, 15) constituting the connection poles (D + and W), a third connection stud (20) constituting the connection pole (B +) is arranged in the connection block area (11), this stud being placed and supported in a housing formed by   protective ribs (19, 20) projecting radially   axially and extending, and this stud itself being made integral (by riveting), by means of a   angled holding plate, cooling plate ment positive.   4. Three-phase current generator according to   any one of claims 1 to 3, characterized   in that the threaded studs (14, 15) surrounded by the insulating material of the printed circuit board and the connection block, and provided for the D + connection and for the W- connection, each have a projecting median shoulder (14 a, 15 a) and a pin   tapered (14b, 15b) connecting to it and which, while   simultaneously ensuring contact with electrical tracks   triply conductive inside the material of the printed circuit board (10) is also coated in this one.   5. Three-phase current generator according to   any one of claims 1 to 4, characterized   in that the connection block (11) in combination with the printed circuit board (10) has at the edge, longitudinal guide bars (27 a,   27 b) which, like a drawer, receives and protects   gent the edge edges (26 a, 26 b) facing them of the cutout (26) of the protective cover (25),   when setting it up.   6 Three-phase current generator according to   any one of claims 1 to 5, characterized   in that the protective cover (25) is stapled on   the rectifier device by means of tabs   integral latching (31) liable to buckle   chir outwards and constituting staple supports. 7. three-phase current generator according to claim 6, characterized in that the locking tabs are formed by cutouts on both sides, from the material of the side walls of the protective cover (25) and have spouts   stop (32) projecting inwards, behind   re which engage the edge edges of the device's positive cooling plate rectifier turned towards these nozzles.   8. Three-phase current generator according to   any one of claims 1 to 7, characterized   in that the protective cover (25) is held under stress on the rectifier device, because by using the elasticity properties of the bottom of the protective cover, support pins (34) leave   of it in the peripheral zone, which applies   then pressurized on the cooling plate   positive straightening towards them of the rectifier device, while simultaneously the stopper pins engage behind the edge edges of the cooling plate.   9. Three-phase current generator according to   any one of claims 1 to 8, characterized   in that screw fasteners (35) are provided for the protective cover through which   screws are guided to threaded holes in the device positive rectifier.   10. Three-phase current generator according to   any one of claims 1 to 9, characterized   in that in the area of the connection block (11) are arranged three connections by threaded studs succeeding each other along the periphery of the printed circuit board to form the connections D +, W and B +. 11. Three-phase current generator according to   any one of claims 1 to 10, character-   in that the protective cover in the cutting area for the connection block (11) comprises,   its side, protruding parts of material   dialing in addition to or in addition to the protective ribs (17, 18, 19, 20) on the block connection (11).   12. Three-phase current generator according to   any one of claims 1 to 11, character-   se in that the connection block comprises in-   tre, a pronounced axial extension in the form of a skirt   partial constituting at the same time, in this place-   ment, a cover for the rectifier device.