FR2726687A1 - ELECTROMAGNETIC CONTACTOR, ESPECIALLY RELAY FOR STARTING DEVICES FOR STARTING INTERNAL COMBUSTION ENGINES - Google Patents

Abstract

a) Electromagnetic contactor, in particular interlocking relay for starting devices of internal combustion engines, b) the part of the plug-in connector housed in the coil holder (13) is a contact sleeve (32) facing towards the cover (17) and in which the end (11a, 12a) of the winding is engaged, with contact at the outer end (33) of this socket, the part of the plug-in connector fixed to the cover (17) is a plug-in socket (34) which, when the launch relay is mounted, encloses beyond the end (33) of the contact sleeve (32) connected to the end of the winding, concentrically, its central contact zone (32a )

Description

"Electromagnetic contactor, in particular interlock relay of

  starting devices for internal combustion engines "

State of the art.

  The subject of the invention is an electromagnetic contactor intended in particular for a relay for switching on or launching starters of internal combustion engines, in which:

  - an armature, by energizing a

  the relay operates, inside a contact chamber insulated from the outside by a cover of the housing of the

  relay, a bridge contact which through

  tacts attached to the hood, can power a use, in particular the electric motor of the starter,

  - at least one of the connections of the winding

  relay, also attached to the contactor cover, is connected via a plug-in

  in the contact chamber, at one end of the winding

  relay, a part of the plug-in connector being

  attached to the hood while the other part is

  on the side of the coil

relay.

  Such relay, known from the British patent GB-

  1 253 822 comprises, in its hood, two pins facing each other, protruding vertically inside the contact chamber of the relay and which, when the relay is assembled, each engage in a socket which itself is mounted

  on the body of the coil carrying the windings of the

  lais and connected to a winding end. The connection

  electrical relay coils is provided via these plug-in connections, on the outside

  on the switch cover. This known solution is

  It is expensive because it uses massive contact pins. It is also expensive because it requires to manually introduce the ends of the windings on the coil body in

  the crimps of the plug-in sockets. In addition, these services

  weavings require additional space next to the plug-in links while the manufacture of plug-in sockets requires several

folding.

Advantages of the invention

  The constitution according to the invention of the contactor

  magnetic field, in particular the launching relay is

  characterized by: - the part of the plug-in connector housed in the coil holder is a contact bush erected in the direction

  of the hood and in which is engaged the end of the

  bearing, with contact at the outer end of this socket, - the part of the plug-in connector attached to the cover is a plug-in socket which, when the launching relay is mounted, encloses beyond the end of the socket

  contact connected to the end of the winding, concentric

  the advantage of the use of a contact bushing instead of a contact pin, on the one hand saves material, on the other hand makes it possible to by means of automated operations these contact sockets on the ends of the windings and to make contact with the crimped zone situated above, so that these connections

  plug-ins reduce the cost of manufacturing and

  floor. Other improvements are characterized in that:

  - the end in contact with at least one

  winding end of the contact sleeve has the shape of a crimped zone now by clamping the end of

  minus one winding wire and whose diameter is less than

  to the size of the remaining part of the sleeve (- the contact sleeve is fitted on a

  spike molded frontally on the spool support and

  both a longitudinal channel for passage of the winding wire; the peak has two parallel and parallel longitudinal channels for receiving one end of the thick wire of the attraction winding and / or one end of the fine wire of the holding winding, these channels having different sections in relation to those sons; - the lower part of the contact socket

  is surrounded by a neck molded on the coil support con-

  centric to the peak and which enters the chamber of con-

  tact through an opening of the magnetic core delimiting this chamber downwards;

  - the opening of the magnetic core is

  cut by a recess up to the outer edge and that the collar which is housed in this recess itself has a recess, made in the coil support flank extending to the outer edge and opening into the longitudinal channel peak; - the end located in the hood of the plug-in socket made by stamping, is maintained

  on this body by a connecting screw through the

  of a bridge, free of stamping in this room estam-

  pee; - The end of the plug socket directed towards the contact chamber is flared cone;

  - a plug-in connection is mounted in each

  one of the areas facing the hood and the coil support; - it is provided in the hood behind the

  socket plugs a blind hole to receive the

  in contact with the winding wire of the contact socket. Thus, it ensures reception and guidance

  particularly advantageous for the ends of the wires of

  relay bearings by engaging each of them, for

  make a plug-in connection in a longitudinal channel

  corresponding pheasant peak: part of the

  and on which is mounted a contact bushing whose crimping zone is above the peak, which

  guarantees that during crimping, the ends of the coils

  items to be put in contact can not shift.

drawings

  The drawings represent an example of

  of the invention, described in more detail below: - Figure 1 shows in longitudinal section, an interlocking relay,

  - Figure 2 shows the underside of the body

  pot of the contactor (removed), with two sockets embro-

Chables,

  FIG. 3 is a sectional view along III-

  III of Figure 2, - Figure 4 is a sectional view along line IV-IV of Figure 2, - Figure 5 shows a portion of the reed of Figure 1, with a plug connection according to the invention, while, FIG. 6 shows this connection on a larger scale; FIG. 7 is a plan view of the coil support at the plug-in connection of FIG. 5;

  FIG. 8 is an enlarged perspective view

  die of this part of the coil support with its molded peak serving as a guide to the ends of the winding.

  Description of the exemplary embodiment

  The relay 10 according to the invention, shown in longitudinal section in FIG. 1 and intended for launching starters of internal combustion engines, comprises, in its essential parts, an attraction winding 11,

  a holding winding 12, both mounted concentrically

  on a coil carrier 13, a soft magnetic housing 14 and a soft magnetic core 15 cooperating with a frame 16, and a contactor cover 17 insulating from the outside a contact chamber 18 located above the magnetic core 15 and carrying two contacts 19, 20. These

  contacts cooperate with a bridge contact 21 mounted in the in-

  inside the chamber 18 at the end of a rod of con-

  22 through the magnetic core 15. A return spring 23 pushes the rod 22 bearing the bridge contact 21, against the action of a thrust spring 24, to bring it into the cut position (rest position), in support of the

  magnetic core through a guiding bushing

  25. The armature 16 is fixed on an operating rod 26 whose lower end, not shown, controls via a lever the engagement

  of a starter pinion with a ring gear of

  tor, when the armature 16 is pulled by the energizing of the attraction winding 11. The upper end of the rod 26 pushes up the rod of

  contact 22, in order to switch on the main circuit

  of the electric motor driving the starter when the trip contacts 19, 20 are connected by the

  bridge contact 21. Disconnection of the coil power supply

  11 t 12 stops the start-up process and the arma-

  ture is repelled by a reinforcement spring 27

  to return to the rest position of FIG.

  starting signal is released from the ring gear and the main circuit of the motor ceases to be energized due to the drop of the bridge contact 21. The electrical connection of the relay 10 takes place on the cover 17 of the contactor, the

  contacts 19 and 20 being extended each, through the

  pot 17, by a threaded connecting rod 28, 29 exceeded

  at the top. The connection 29 is also connected to

  the end 12b of the holding winding by a link

  its plug-in described later with reference to FIG.

  The other end 12a of the holding winding is, in

  common with an end 11a of the winding of attrac-

  connected by another link embro-

  chable according to the invention shown in Figure 6, to a connecting screw 30 which, according to Figure 4, also through the cover 17 to protrude outside. The other end of the trigger winding is directly brazed or soldered to the magnetic core 15 and is located

therefore to the mass potential.

  Figure 6 represents, on a larger scale,

  one of the two plug-in links 30 located according to the

  in the parts facing each other

  17 and the body 13 carrying the coil. It can be seen that the connector portion housed in the support 13 of the coil is a contact bushing 32 projecting towards the cover 17 and through which the end 11a of the attraction winding 11 and the end 12a of the holding winding, this sleeve being in contact by clamping with a crimping zone 33, at the end of the sleeve. The connector attached to the cover 17 is a plug-in socket 34 made of sheet metal cut and stamped as

  the contact bushing 32 and which, when the relay is

  té, passed with its flared conical end 34a on the crimping zone 33 and slid on the middle portion 32a

  of the contact socket 32 which it encloses with

  electrical connection. In order to be able, when

  place the cover 17 on the armature core 15 when the

  Relay appearance, pass the plug socket 34 on the crimping zone 33 of the socket of the contact 32, this zone has a smaller diameter than that of the zone 32a, located below and forming part of the socket 32. This socket is mounted on a peak 35 molded on the upper face 13a of the coil support 13 in height and, as shown in Figure 8, pierced with channels 36, 37 serving as a passage at the ends of the winding son 11a and 12a. Since the attraction winding 11, because of

  the high intensity that goes through it when it

  sion has a larger section of wire than that of the wire of the holding winding 12, the two parallel and neighboring longitudinal channels respectively receiving

  the thin end and the thick end of the yarns correlated

  different sections. The contact socket

  32 bringing the trigger voltage should be well iso-

  magnetic core 15 which is grounded. For this, the lower part of the contact bushing 34 is surrounded by a collar concentric with the peak 35, molded frontally on the coil support 13 and which enters the contact chamber 18 through an opening of the magnetic core 15 which defines this room down. This opening is here formed by a recess 39 of the core 15, extending to the outer edge. The collar 38 of the coil support 13 bordering this recess itself has a recess 40 extending to the outer edge on the upper side 13a of the coil support 13 and opening into

  the longitudinal channels 36, 37 of the peak 35.

  In order to manufacture the interlocking relay, the attraction windings 11 and

  hold 12 on the coil support 13 and draw an ex-

  tremité lla of the winding 11 and an end 12a s of the winding 12 to bring them into the recess 40 of the

  13, so as to engage them in the longitudinal channels

  tudinal 36 and 37 and take them out above the peak 35.

  In the same way, on the opposite side, the other two extremes

  mente son are introduced into another recess 40, but only the end 12b of the thin wire of the holding winding 12 is slid into the longitudinal channel 37 of the

  opposite end 35. The end of the thick wire is, however,

  born at the neck 38 following a lateral channel 41 shown in Figure 8. Then, is connected to each of the peaks 35 a contact sleeve 32 and the winding ends 11a, 12a, 12b are then brought into electrical contact with the

  sleeve 32 in the crimping zone 33, by clamping.

  The end of thick wire in the side channel 41 is folded on the side and brazed or welded to the magnetic core 15, directly near the collar 38. It is then possible to introduce the pre-assembled contact rod 22 with the contact

  in bridge 21, the guide sleeve 25 and the spring of

  contact 24 in the magnetic core and place this

  together thus pre-assembled in the housing 14.

  Independently, the connection rods

  28, 29 with their contacts 19, 20 are introduced into the contactor cover 17 and fixed by nuts 43, the rod 29 being, according to FIG.

  bridge 42 made by cutting the edge of the socket bushing-

ble 34.

  The other plug socket 34 located in front

  is also, according to figure 4, united by a bridge

  42 to the connecting rod 31, offset on the hood 17

  relative to the rods 28, 29 and locked by a nut 44.

  Above each plug socket 34, the lid 17 has a blind hole 45. The lid thus preassembled can then be engaged frontally on the magnetic core, the two sockets 34 being then slid on the

  contact sockets 32, thus creating an embroidering connection

  chable 30 for connecting the windings 11 and 12 of the relay. The crimping zone 33 of the contact socket

  32 is thus housed inside the blind hole 45 si-

  killed behind the socket plug 34 in the hood 17.

  Finally, the armature 16 with its return spring 27 is in-

  troduced from the bottom into the relay housing 14.

  The invention is not limited to the exemplary embodiment shown. For example, the connections screwed into the cover 17 may be replaced by other types of connection, for example plug-in connections, in particular for

  connect the windings 11 and 12. For weak

  the launching relay may possibly not

  wear than a winding, then requiring only one

  pluggable link 30 at a winding end.

Claims (9)

R E V E N D I C A T IONS   1) Electromagnetic contactor, in particular ignition relay of an internal combustion engine starter, wherein: - an armature, by energizing a relay winding actuates, inside an insulated contact chamber of the outside by a cover of the relay housing, a bridge contact which via contacts fixed to the cover, can power a use, in particular the electric motor of the starter, - at least one of the connections of the winding of the relay,   also attached to the contactor cover is connected   intermediary of a plug-in link located in the room   contact member at one end of the relay winding, a part of the plug-in connector being fixed to the cover while the other part is arranged frontally on the sidewall of the coil of the relay winding, this contactor having the following features: - the part of the plug-in connector housed in the coil holder (13) is a contact socket (32) raised in   direction of the hood (17) and in which the former is engaged   tremity (11a, 12a) of the winding, with contact to the ex-   external end (33) of this socket, - the part of the plug-in connector attached to the cover (17) is a plug-in socket (34) which, when the relay   latch (10) is mounted, encloses beyond the end   mity (33) of the contact socket (32) connected to the end   winding, concentrically, its central zone of contact (32a).   2) Inrush relay according to the claim   1, characterized in that the end in contact with at least one winding end (11a, 12a, 12b) of the contact bushing (32) is in the form of a crimped area (33) now clamped the end (11a, 12a) of at least one winding wire and whose diameter is smaller than the   dimension of the remaining portion (32a) of the sleeve (32).   3) Inrush relay according to the claim   2, characterized in that the contact sleeve (32) is fitted on a peak (35) molded frontally on the coil carrier (13) and having a longitudinal channel   (36, 37) passage of the winding wire (11a, 12a, 12b).   4) Inrush relay according to the claim   3, characterized in that the peak (35) has two   longitudinal and parallel longitudinal fins (36, 67) for receiving an end (11a) of the thick wire of the attraction winding (11) and / or an end (12a, 12b) of the end wire of the holding winding (12), these channels having   different sections in relation to those of the threads.   5) Inrush relay according to the claim   3 or 4, characterized in that the lower part of the contact bushing (32) is surrounded by a neck (38) molded on the coil carrier (13) concentrically to the peak   (35) and which enters the contact chamber (18) through   an opening (39) of the magnetic core (14, 15) delineates putting this room down.   6) Inrush relay according to the claim   5, characterized in that the opening (39) of the main core   gnétique (15) is constituted by a recess (39) extending to the outer edge and that the collar (38) which is   accommodating in this recess (39) itself presents a recess   ment (40), formed in the flank (13a) of support   bine (13) extending to the outer edge and opening   in the longitudinal channel (36, 37) of the peak (35).   7) Interlocking relay according to one of the   prior art, characterized in that the end located in the cover (17) of the plug-in socket (34) is held on this body (17) by a connecting screw (31) via A bridge   (42), free of stamping in this stamped piece.   8) Inrush relay according to the claim   7, characterized in that the end (34a) of the plug socket (34) directed towards the contact chamber (18) is flared in cone.   9) Interlocking relay according to one of the   previous indications, characterized in that a link   (30) is mounted in each of the zones   face of the cover (17) and the coil support (13).   ) Interlocking relay according to one of the   prior art, characterized in that there is provided in the cover (17) behind the plug socket (34) a blind hole (45) for receiving the end (33), in contact   with the winding wire (11a, 12a), the lead sleeve tact (32).