FR2548280A1 - Improvements to the contacts of an electric starter, in which the shaft is independent of the movable core plunger - Google Patents
Improvements to the contacts of an electric starter, in which the shaft is independent of the movable core plunger Download PDFInfo
- Publication number
- FR2548280A1 FR2548280A1 FR8311123A FR8311123A FR2548280A1 FR 2548280 A1 FR2548280 A1 FR 2548280A1 FR 8311123 A FR8311123 A FR 8311123A FR 8311123 A FR8311123 A FR 8311123A FR 2548280 A1 FR2548280 A1 FR 2548280A1
- Authority
- FR
- France
- Prior art keywords
- core
- axis
- movable core
- independent
- contacts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/02—Non-polarised relays
- H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
- H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
- H01H51/065—Relays having a pair of normally open contacts rigidly fixed to a magnetic core movable along the axis of a solenoid, e.g. relays for starting automobiles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/18—Movable parts of magnetic circuits, e.g. armature
- H01H50/30—Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
On sait que les démarreurs électriques pour moteurs à combustion interne sont pourvus d'un lanceur portant un pignon destiné à coopérer avec la grande couronne du moteur à combustion interne. La translation du lanceur peut se faire au moyen d'un levier basculant qui est commandé par un contacteur électrique. A la fin de la translation du noyau du contacteur, un axe solidaire de ce noyau commande la fermeture de contacts afin de mettre le moteur électrique du démarreur sous tension. It is known that electric starters for internal combustion engines are provided with a launcher carrying a pinion intended to cooperate with the large crown of the internal combustion engine. The translation of the launcher can be done by means of a tilting lever which is controlled by an electrical contactor. At the end of the translation of the core of the contactor, an axis integral with this core controls the closing of contacts in order to energize the electric motor of the starter.
Pour des raisons diverses et en particulier pour réduire la course et l'encombrement du contacteur, son noyau mobile peut être séparé de son axe porte-contacts. On conçoit fort bien que lors de l'excitation de l'enroulement du contacteur, l'appel du noyau entrain un choc sur l'axe, de telle sorte que les contacts peuvent se fermer avant que le lanceur ne soit arrivé en fin de course, ctest-à-dire au mieux avec son pignon en contact avec le flanc de la denture de la grande couronne. Ceci entrain une mise en rotation prématurée du pignon du lanceur qui provoque une usure de ladite couronne par le pignon, voire des ruptures des dents de ces organes. For various reasons and in particular to reduce the travel and the size of the contactor, its movable core can be separated from its contact-carrying axis. It is well understood that during the excitation of the winding of the contactor, the call of the core causes a shock on the axis, so that the contacts can close before the launcher has reached the end of the race. , that is to say at best with its pinion in contact with the flank of the teeth of the large crown. This results in a premature rotation of the pinion of the launcher which causes wear of said crown by the pinion, or even ruptures of the teeth of these organs.
Les perfectionnements qui font l'objet de la présente invention visent à remédier à cet inconvénient en évitant l'accélération de l'axe du noyau du contacteur au moyen d'un freinage progressif fonction de la compression d'un ressort jouant le role de rappel du noyau mobile. The improvements which are the subject of the present invention aim to remedy this drawback by avoiding the acceleration of the axis of the core of the contactor by means of progressive braking as a function of the compression of a spring playing the return role. of the mobile core.
Le dessin annexé, donné à titre d'exemple, permettra de mieux comprendre l'invention, les caractéristiques qu'elle pressente et les avantages qu'elle est susceptible de procurer
La figure unique du dessin est une coupe longitudinale d'un contacteur de démarreur électrique établi conformément à l'invention.The appended drawing, given by way of example, will allow a better understanding of the invention, the characteristics which it senses and the advantages which it is likely to provide.
The single figure of the drawing is a longitudinal section of an electric starter contactor established in accordance with the invention.
Un contacteur de démarreur électrique pour moteur thermique comprend généralement une carcasse 1 renfermant un bobinage 2 à plusieurs enroulements et qui est retenu par une bobine isolante 3. La carcasse comporte un fond la, tandis que son extrémité ouverte est fermée par un capuchon isolant 4, convenablement associé à la carcasse au moyen de boulons 5 dont la tête prend appui dans une cuvette isolante 6 associée à deux plaquettes 7 et 8 fermant le circuit magnétique et supportant le noyau fixe 12, serties par rapport à la carcasse 1. Le capuchon est pourvu de deux bornes 9 dont l'une seule a été représentée et qui sont mises en court-circuit par un contact 10 porté par l'extremite d'un axe 11 coulissant dans un palier 12 constituant noyau fixe associe par sertissage au centre des plaquettes 7, 8.Des ressorts 13, 14 sont destinés à équilibrer la force d'appui du contact 10 respectivement sur les bornes 9 et à permettre le retour de l'axe 11 à sa position initiale. An electric starter contactor for a thermal engine generally comprises a carcass 1 containing a winding 2 with several windings and which is retained by an insulating coil 3. The carcass has a bottom 1a, while its open end is closed by an insulating cap 4, suitably associated with the carcass by means of bolts 5, the head of which is supported in an insulating bowl 6 associated with two plates 7 and 8 closing the magnetic circuit and supporting the fixed core 12, crimped relative to the carcass 1. The cap is provided two terminals 9, only one of which has been shown and which are short-circuited by a contact 10 carried by the end of a pin 11 sliding in a bearing 12 constituting a fixed core associated by crimping in the center of the plates 7 8, springs 13, 14 are intended to balance the pressing force of the contact 10 respectively on the terminals 9 and to allow the axis 11 to return to its initial position.
Le déplacement de l'axe 11 s'effectue par action d'un noyau mobile 15 placé à l'intérieur de la bobine 3 et qui, lorsque le bobinage est excité, se déplace vers la droite en entratnant l'axe 11 dans la même direction.The axis 11 is moved by the action of a movable core 15 placed inside the coil 3 and which, when the winding is energized, moves to the right by driving the axis 11 in the same direction.
Comme on l'a expliqué plus haut, le choc produit par la prise de contact du noyau 15 avec l'axe 11 entraîne une accélération de ce dernier qui applique le contact 10 sur les bornes 9 avant la fin de la course de ce noyau. Comme celle-ci détermine l'importance du déplacement du lanceur par suite de l'action de son extrémité extérieure 15a sur le levier d'actionnement non représenté, le lanceur est mis en rotation avant que ses dents ne viennent en appui contre le flanc de celles de la grande couronne du moteur thermique. As explained above, the shock produced by the contact of the core 15 with the axis 11 causes the latter to accelerate which applies the contact 10 to the terminals 9 before the end of the stroke of this core. As this determines the extent of movement of the launcher as a result of the action of its outer end 15a on the actuation lever not shown, the launcher is put into rotation before its teeth come to bear against the side of those of the large crown of the heat engine.
Pour remédier à cet inconvénient, on évite l'aecélération de l'axe au moment du choc en freinant celui-ci, par exemple au moyen d'un joint torique 16 disposé dans une rainure annulaire 12a du palier 12 et contre lequel bute une rondelle 17. Sur cette dernière prend appui l'une des extrémités d'un ressort de compression 18 dont l'extrémité opposée repose dans le fond dtun forage central borgne 15b ménagé dans le noyau 15. Les dimensions du joint 16 et les cotes de la rainure 12a sont choisies en fonction de l'intensité désirée du freinage. Du fait de la présence du ressort 18, le freinage est progressif, c'est-à-dire qu' il augmente au fur et à mesure que le noyau 15 se déplace vers la droite en bandant le ressort.Autrement dit, c'est au moment du choc du noyau contre l'axe 11 que le freinage est le plus important. To remedy this drawback, the axis is prevented from accelerating at the time of the impact by braking it, for example by means of an O-ring 16 disposed in an annular groove 12a of the bearing 12 and against which a washer abuts. 17. On the latter is supported one of the ends of a compression spring 18, the opposite end of which rests in the bottom of a blind central bore 15b formed in the core 15. The dimensions of the joint 16 and the dimensions of the groove 12a are chosen according to the desired intensity of braking. Due to the presence of the spring 18, the braking is progressive, that is to say that it increases as the core 15 moves to the right by banding the spring. In other words, it is at the time of the impact of the core against the axis 11 that braking is the most important.
Pour miter toute compression d'air dans l'espace compris entre le noyau et le palier 12, on prévoit d'établir le noyau à un diamètre tel qu'un jeu suffisant apparaît entre lui et la bobine 3. Si le jeu doit être réduit, on peut bien entendu ménager des rainures dans le noyau ou la bobine. To mimic any air compression in the space between the core and the bearing 12, provision is made to establish the core at a diameter such that sufficient clearance appears between it and the coil 3. If the clearance must be reduced , it is of course possible to provide grooves in the core or the coil.
Il va de soi que le joint 12a pourrait être remplacé par une rondelle compressible déformable présentant la particularité que son diamètre intérieur diminue au fur et à mesure de son aplatissement. It goes without saying that the seal 12a could be replaced by a deformable compressible washer having the particularity that its internal diameter decreases as it is flattened.
I1 doit d'ailleurs être entendu que la description qui précède n'a été donnée qu'à titre d'exemple et qu'elle ne limite nullement le domaine de l'invention dont on ne sortirait pas en remplaçant les détails d'exécution décrits par tous autres équivalents. It should moreover be understood that the above description has been given only by way of example and that it in no way limits the field of the invention from which one would not depart by replacing the execution details described by all other equivalents.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8311123A FR2548280B1 (en) | 1983-06-30 | 1983-06-30 | IMPROVEMENTS ON ELECTRIC STARTER CONTACTORS WHOSE AXIS IS INDEPENDENT OF THE MOBILE CORE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8311123A FR2548280B1 (en) | 1983-06-30 | 1983-06-30 | IMPROVEMENTS ON ELECTRIC STARTER CONTACTORS WHOSE AXIS IS INDEPENDENT OF THE MOBILE CORE |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2548280A1 true FR2548280A1 (en) | 1985-01-04 |
FR2548280B1 FR2548280B1 (en) | 1987-08-07 |
Family
ID=9290497
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8311123A Expired FR2548280B1 (en) | 1983-06-30 | 1983-06-30 | IMPROVEMENTS ON ELECTRIC STARTER CONTACTORS WHOSE AXIS IS INDEPENDENT OF THE MOBILE CORE |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2548280B1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2680834A1 (en) * | 1991-08-30 | 1993-03-05 | Mitsubishi Electric Corp | Electromagnetic switch for a starter motor |
FR2783089A1 (en) * | 1998-09-03 | 2000-03-10 | Valeo Equip Electr Moteur | STARTER CONTACTOR COMPRISING A MAGNETIC CORE FIXED IN MULTIPLE PARTS |
FR2897717A1 (en) * | 2006-02-23 | 2007-08-24 | Denso Corp | ELECTROMAGNETIC SWITCH HAVING A FIXED MAGNETIC CORE HAVING A DISC PART FORMED OF A STACK OF BASE METAL SHEETS AND BALANCING. |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2318672A (en) * | 1941-11-26 | 1943-05-11 | Gen Motors Corp | Solenoid switch |
FR1156169A (en) * | 1955-09-01 | 1958-05-13 | Bosch Gmbh Robert | Electromagnetic contactor, in particular step contactor for electric starters |
US3189705A (en) * | 1961-05-09 | 1965-06-15 | Texas Instruments Inc | Relay with a central, coaxial core magnetizable with the relay coil conductor |
US3198996A (en) * | 1962-06-20 | 1965-08-03 | Junkers & Co | Electromagnet actuator having a shock absorbing means |
FR1536052A (en) * | 1966-09-09 | 1968-08-09 | Lucas Industries Ltd | Electro-magnetic device for starting mechanism of an engine |
CH521011A (en) * | 1970-09-10 | 1972-03-31 | Bbc Brown Boveri & Cie | Low-oil circuit breaker |
FR2476932A1 (en) * | 1980-02-27 | 1981-08-28 | Bosch Gmbh Robert | ELECTROMAGNETIC MANEUVERING DEVICE, IN PARTICULAR A RUNWAY CONTROL FOR STARTERS OF INTERNAL COMBUSTION ENGINES |
-
1983
- 1983-06-30 FR FR8311123A patent/FR2548280B1/en not_active Expired
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2318672A (en) * | 1941-11-26 | 1943-05-11 | Gen Motors Corp | Solenoid switch |
FR1156169A (en) * | 1955-09-01 | 1958-05-13 | Bosch Gmbh Robert | Electromagnetic contactor, in particular step contactor for electric starters |
US3189705A (en) * | 1961-05-09 | 1965-06-15 | Texas Instruments Inc | Relay with a central, coaxial core magnetizable with the relay coil conductor |
US3198996A (en) * | 1962-06-20 | 1965-08-03 | Junkers & Co | Electromagnet actuator having a shock absorbing means |
FR1536052A (en) * | 1966-09-09 | 1968-08-09 | Lucas Industries Ltd | Electro-magnetic device for starting mechanism of an engine |
CH521011A (en) * | 1970-09-10 | 1972-03-31 | Bbc Brown Boveri & Cie | Low-oil circuit breaker |
FR2476932A1 (en) * | 1980-02-27 | 1981-08-28 | Bosch Gmbh Robert | ELECTROMAGNETIC MANEUVERING DEVICE, IN PARTICULAR A RUNWAY CONTROL FOR STARTERS OF INTERNAL COMBUSTION ENGINES |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2680834A1 (en) * | 1991-08-30 | 1993-03-05 | Mitsubishi Electric Corp | Electromagnetic switch for a starter motor |
FR2783089A1 (en) * | 1998-09-03 | 2000-03-10 | Valeo Equip Electr Moteur | STARTER CONTACTOR COMPRISING A MAGNETIC CORE FIXED IN MULTIPLE PARTS |
WO2000014758A1 (en) * | 1998-09-03 | 2000-03-16 | Valeo Equipements Electriques Moteur | Starting switch comprising a fixed magnetic core in several parts |
US6281770B1 (en) | 1998-09-03 | 2001-08-28 | Valeo Equipments Electriques Moteur | Starting switch comprising a fixed magnetic core in several parts |
FR2897717A1 (en) * | 2006-02-23 | 2007-08-24 | Denso Corp | ELECTROMAGNETIC SWITCH HAVING A FIXED MAGNETIC CORE HAVING A DISC PART FORMED OF A STACK OF BASE METAL SHEETS AND BALANCING. |
Also Published As
Publication number | Publication date |
---|---|
FR2548280B1 (en) | 1987-08-07 |
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ST | Notification of lapse |