FR2642896A1

FR2642896A1 - ELECTROMECHANICAL MICRO-RELAY

Info

Publication number: FR2642896A1
Application number: FR8901847A
Authority: FR
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-02-06
Filing date: 1989-02-06
Publication date: 1990-08-10
Also published as: WO1990009028A1; EP0419603A1

Abstract

The present invention relates to the miniaturization of a high (about 300 watts) power relay. The field of application of such apparatus is mainly electric equipment, particularly in the field of motor vehicles. The relay is comprised of a coil carcase (4) wherein is introduced a magnetic armature (1) which also acts as a half core, and of a connection terminal (Fig. 3). The second part of the core (2) is formed by a part obtained also from cutting, like the armature (1), also encased in the core carcase (4) but in the opposite direction in order to provide the core with an appropriate flux passage cross-section (Fig. 1). A solenoid (5) coiled about the carcase has its extremities hooked and welded by automatic processes to the output terminals (17) (Fig. 4) previously encased in the carcase (4). In the fixed armature, a movable palet (3) is hinged on the back of which a flexible blade (9) sets the moving contact (3 and 9) in the rest position. An electric welding binds electrically the blade (9) against the armature (Fig. 2).

Description

Micro-relais électromécanique
La présente invention & pour obiet la réalisation éco
nomique d'un micro relais destiné tout particuliérement
aux équipements électriques de véhicules automobiles.Electromechanical micro-relay
The present invention & for obiet the eco realization
name of a micro relay intended especially
electrical equipment of motor vehicles.

La particularité intéressante dans ce relais est le - circuit magnétique conçu en une seule pièce (lyse com
posant d'une équerre, d'un Z branche centrale se
logeant au centre de la bobine et d'un pin de connnec
tion. Cette pièce unique appelée armature est découpée1
pliée, par outillage a suivre permettant un gain de
-production tres important. Fig.l. The interesting feature in this relay is the - magnetic circuit designed in one piece (lyse com
posing with a square, a central Z branch
housed in the center of the coil and a connnec pin
tion. This unique piece called frame is cut out1
folded, by tools to follow allowing a gain of
-production very important. Fig. L.

Dans la partie inférieure de l'équerre (Fig.l) un
bras ( 13 ) faisant partie de l'armature est rabattu
assurant le centrage du pin de connections (12). Afin
de récupérer le maximum de flux magnétique au centre de
-la bobine, une deuxième pièce appelé noyau (2) est
chassée parallèlement & la Z branche (14) dans la car
casse de la bobine (4). A l'extrémité supérieure de ce
noyau, coté palette mobile (3) deux cornes polaires (6)
permettent l'évacuation des lignes de flux magnétiques
-sur toute la largeur de la palette mobile (3) Fig.l. In the lower part of the square (Fig. L) a
arm (13) forming part of the frame is folded down
ensuring the centering of the connection pin (12). To
to recover the maximum magnetic flux in the center of
-the coil, a second part called the core (2) is
driven parallel & the Z branch (14) in the bus
coil break (4). At the upper end of this
core, mobile pallet side (3) two polar horns (6)
allow the evacuation of magnetic flux lines
- over the entire width of the movable pallet (3) Fig.l.

le fait d'avoir un ensemble noyau central de forme rec
tangulaire, permet d'avoir une bobine aplatie, et de ce
fait gagner du volume.La deuxième originalité du sys
time est la conception de la lame souple (9) en forme - de T dont la partie centrale est pliée a 11 équerre; de
chaque coté de la lame les contacts mobiles des con
tacts (7) sont soudés par automates. Fig.2
Pour la partie pliée & l'équerre de la lame souple (9)
deux contre-pliages sont exécutés de façon i la rendre - élastique une fois fixée.L'effort de ressort de la lame
est réalisé par un armasse au moment du montage le long
de l'armature (I), le verrouillage de cette position
est assuré par un rivetage ou une soudure électricue. having a central core set of rec shape
tangular, allows to have a flattened coil, and
The second originality of the sys
time is the design of the T-shaped flexible blade (9), the central part of which is folded at 11 square; of
each side of the blade the movable contacts of the cones
tacts (7) are welded by automata. Fig. 2
For the folded part & the square of the flexible blade (9)
two back-folds are executed so as to make it elastic when fixed. The spring force of the blade
is made by a armasse at the time of mounting along
of the armature (I), locking this position
is secured by riveting or electric welding.

Cette dernière solution (soudure électrique) offre l'a - vantage d'avoir une très bonne liaison électrique et
mécanique. Fig.2. The latter solution (electrical welding) offers the advantage of having a very good electrical connection and
mechanical. Fig. 2.

Cette lame souple (9) est rivée sur le dos de la palet
te mobile (3) formant avec cette dernière l'équipage
mobile.This flexible blade (9) is riveted on the back of the puck
you mobile (3) forming with the latter the crew
mobile.

- La palette mobile (4) s'encastre dans l'ouverture de
l'armature (1) permettant & celle-ci d'avoir qu'un seul
degré de liberté une fois l'équipage mobile soudé élec
triquement sur l'armature.- The mobile pallet (4) fits into the opening of
the frame (1) allowing & this to have only one
degree of freedom once the mobile equipment has been welded
tracing on the frame.

Bien entendu, ce micro-relais présente tous les avanta qes de la standardisation, puisque les sorties (pins
soudables) sont positionnés suivant une grille ou pas
de 1,27. Fig.4. Of course, this micro-relay has all the advantages of standardization, since the outputs (pins
weldable) are positioned according to a grid or not
1.27. Fig. 4.

Claims

I. Electromagnetic micro-relay allowing to cut important intensity in an extremely reduced volume comprising. a coil (5) supported by a carcass (4) of injected plastic, characterized by a U-shaped magnetic armature coming from tool cutting & after which (the armature (1)) acts as a flux conductor on 3/4 of its way, the last li being provided by the movable pallet (3) Fig.l II. The micro-relay according to claim (I) characterized by the core (2) also come by cutting process, housed in the carcass of the coil (4) juxtaposed along the armature, allowing a more flow section significant, also characterized by polar horns (6) increasing the evacuation of the flow lines and a better distribution at the end of the movable pallet (3) Fig 1.

III. Micro-relay according to claim I-II charac terized by a folding of one of the legs (13) of the frame allowing the creation of a weldable output pin (12) Fiv.1.

IV. Micro-relay according to claims I-II-III charac

terized by a flexible flexible blade crimped on the pallet

mobile (3) also allowing the recall of this

pallet once the coil off, characterized - by its method of fixing by electric welding offering

an extremely low cost of adjustment. Fig. 2

The invention is applicable in the most

various including electrical equipment

of motor vehicles.