FR2536914A1 - Safety cut-out for battery. - Google Patents

Safety cut-out for battery. Download PDF

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Publication number
FR2536914A1
FR2536914A1 FR8219951A FR8219951A FR2536914A1 FR 2536914 A1 FR2536914 A1 FR 2536914A1 FR 8219951 A FR8219951 A FR 8219951A FR 8219951 A FR8219951 A FR 8219951A FR 2536914 A1 FR2536914 A1 FR 2536914A1
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FR
France
Prior art keywords
terminal
supply
vehicle
cover
battery
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
Application number
FR8219951A
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French (fr)
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FR2536914B1 (en
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Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to FR8219951A priority Critical patent/FR2536914A1/en
Publication of FR2536914A1 publication Critical patent/FR2536914A1/en
Application granted granted Critical
Publication of FR2536914B1 publication Critical patent/FR2536914B1/fr
Granted legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/0241—Structural association of a fuse and another component or apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/28—End pieces consisting of a ferrule or sleeve
    • H01R11/281—End pieces consisting of a ferrule or sleeve for connections to batteries
    • H01R11/287—Intermediate parts between battery post and cable end piece
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/0241—Structural association of a fuse and another component or apparatus
    • H01H2085/025—Structural association with a binding post of a storage battery

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Fuses (AREA)

Abstract

The invention relates to a safety cut-out device for the battery of a motor vehicle, provided on the positive terminal of the said battery and comprising a cylindrical, hollow body 1 of a conductive material, into which is screwed a non-conductive cylindrical element 3, a conductive plate 4 being clasped between the element 3 and the body 1. A cover 5 keeps a supply lug 6 of the starter of the vehicle in place against a contact surface 1b provided on the body 1. A supply terminal 7 is connected via a straight fuse to the plate 4 and, by overhanging the insulating cover 5, keeps the latter in place. A spring 9 is arranged in its compressed state between the plate 4 and the cover 5. When a chance overload appears in the circuit, in particular during a surge, the fuse, by breaking, frees the spring 9 which ejects the terminal 7 and the lug 6, all electrical connection between the battery and the circuit thus being interrupted.

Description

Coupe-circuit de sécurité pour accumulateur.Safety circuit breaker for accumulator.

La présente invention concerne un dispositif coupe-circuit de
sécurité pour générateur de courant, notamment un dispositif
agencé pour assurer la déconnexion immédiate de l'accumulateur
d'un véhicule à moteur, au niveau de ses bornes, lorsqu'un
seuil de surintensité anormale est dépassé.The present invention relates to a circuit breaker device
safety for current generator, in particular a device
arranged to ensure immediate disconnection of the accumulator
of a motor vehicle, at its terminals, when
Abnormal overcurrent threshold is exceeded.

On sait déjà équiper les véhicules automobiles d'une "botte à
fusibles" abritant des fusibles destinés à la protection
contre les surintensités dans les divers organes électriques
du véhicule. Cependant lors de l'accident d'un véhicule,des
câbles électriques à potentiel positif, généralement de + 12 volts, restent connectés à la borne positive de l'accumulateur
et, en cas de contact inopiné de ceux-ci avec la masse du
véhicule lors de l'accident, masse électriquement reliée à
l'autre borne de l'accumulateur des étincelles peuvent être
engendrées, susceptibles de mettre le feu au véhicule accidenté.We already know how to equip motor vehicles with a "boot
fuses "housing fuses intended for protection
against overcurrents in various electrical organs
of the vehicle. However, during a vehicle accident,
electric cables with positive potential, generally + 12 volts, remain connected to the positive terminal of the accumulator
and, in the event of unexpected contact of these with the mass of the
vehicle at the time of the accident, mass electrically connected to
the other terminal of the spark accumulator can be
engendered, likely to ignite the accident vehicle.

En outre, le cible d'alimentation du démarreur est généralement
relié directement à la borne positive de l'accumulateur, sans
fusible, l'intensité circulant dans ee cabale étant trop élevée.In addition, the starter's power target is generally
connected directly to the positive terminal of the accumulator, without
fuse, the current flowing in this cabal being too high.

Cet organe du véhicule reste dono en permanence alimenté etX
en cas d'accidents le risque d'incendie mentionné ci-dessus est
accru.This organ of the vehicle remains permanently powered and X
in the event of accidents the risk of fire mentioned above is
increased.

La présente invention vise à pallier ces inconvénients et à
proposer un dispositif coupe-circuit de sécurité qni inter
rompe , au niveau des bornes de l'accumulateur toutes les
connexions électriques avec celui-ci lors de la détection
d'une surintensité accidentelle, et supprime par li tout
risque d'incendie par étincelle d'origine électrique,notamment
lorsque le véhicule est accidenté.The present invention aims to overcome these drawbacks and to
offer a safety interlock device
breaks, at the battery terminals all
electrical connections to it upon detection
of an accidental overcurrent, and suppresses by li all
risk of fire due to electric spark, in particular
when the vehicle is in an accident.

A cet effet, la présente invention concerne un dispositif
coupe-circuit de sécurité pour générateur de courant, du type comprenant, entre au moins une borne dudit générateur et.a'L moins un câble d'alimentation en énergie électrique, des moyens fusibles agencés pour se rompre lorsque le courant qui les traverse dépasse une valeur de seuil prédéterminée, caractérise par le fait qa'il comprend en outre des moyens élastiques agencés pour éjecter de~ladite borne au moins une
partie d'organes électriques d'alimentation en contact avec ladite borne lorsque lesdits moyens fusibles se rompent
De façon préférée, le dispositif comprend un couvercle soumis à la poussée d'un ressort et appliquant une cosse d'alimenta tion contre une surface de contant, maintenu en place grâce audits moyens fusibles, le ressort étant libéré lorsque les moyens fusibles se rompent
Dans ce cas, ladite cosse est la cosse d'alimentation du démar- reur d'un véhicule, le générateur de courant étant l'accumula- teur dudit véhicule.To this end, the present invention relates to a device
safety circuit breaker for a current generator, of the type comprising, between at least one terminal of said generator and.a'L at least one electric power supply cable, fuse means arranged to break when the current passing through them exceeds a predetermined threshold value, characterized by the fact that it further comprises elastic means arranged to eject from said terminal at least one
part of electrical supply members in contact with said terminal when said fusible means rupture
Preferably, the device comprises a cover subjected to the thrust of a spring and applying a supply terminal against a surface of the container, held in place by said fusible means, the spring being released when the fusible means fail.
In this case, said terminal is the supply terminal of the starter of a vehicle, the current generator being the accumulator of said vehicle.

L'invention sera mieux comprise â la lecture de la description suivante d'une forme de réalisation préférée du dispositif selon l'invention, faite en référence an dessin annexé, sur lequel la Figure unique est une vue en coupe axiale du dispositif selon l'invention.The invention will be better understood on reading the following description of a preferred embodiment of the device according to the invention, made with reference to the appended drawing, in which the single figure is a view in axial section of the device according to the invention.

Sur le dessin, le dispositif selon l'invention comporte un corps 1 en métal conducteur, sensiblement cylindrique et comportant un fond la , un taraudage étant pratiqué sur la surface intérieure de sa paroi latérale. Le corps comporte en outre une collerette d'arrêt 1b au détendant vers l'exté- rieur dans la région de sa partie supérieure. Le corps 1 est enfoncé dans le boîtier 2 d'un accumulateur pour automobile qui délivre sur ledit corps conducteur 1, de façon non représentée, une tension de + 12 volts, en référence à la tension présente sur une autre borne de l1aocumulateur,éga- lement non représentée. Le dispositif comporte en outre un élément cylindrique 3 en un matériau isolant, tel que l'ébo nite , comportant sur l'extérieur de sa paroi latérale un filetage agencé pour coopérer avec le taraudage du corps 1.In the drawing, the device according to the invention comprises a body 1 of conductive metal, substantially cylindrical and comprising a bottom 1a, a thread being formed on the interior surface of its side wall. The body further comprises a stop collar 1b to the regulator towards the outside in the region of its upper part. The body 1 is pressed into the housing 2 of an automobile accumulator which delivers on said conductive body 1, not shown, a voltage of + 12 volts, with reference to the voltage present on another terminal of the documentator, also not shown. The device further comprises a cylindrical element 3 made of an insulating material, such as ebonite, comprising on the outside of its side wall a thread arranged to cooperate with the thread of the body 1.

L'élément cylindrique. 3 comporte9 sur sa partie d'extrémité inférieure1 une plaque circulaire 4 en un matériau conduc- teur, agencée pour entrer en contact électrique avec le fond dudit corps 1 lorsque l'élément 3 est visse dans le corps 1. On trouve en outre un couvercle 5, agencé pour s'ajuster sur l'élément cylindrique 3 par une saillie'annu- ladre 5a disposée en son centre et pénétrant dans l'ouverture de l'élément cylindrique 50 L'élément 5 est de façon préférée constitue du même matériau isolant que l'élément cylindrique 3, et présente en son centre une ouverture 5b à des fins explicitées par la suite.Le couvercle 5 comprend en outre, sur sa périphérie extérieure, un évidement annu- laire agencé pour recevoir une cosse conductrice annulaire 6 reliée a un câble destiné à l'alimentation en énergie électrique du démarreur du véhicule, et à appuyer ladite cosse, d'une façon explicitée plus bas, contre la surfacé conductrice de ladite partie en collerette du corps conducteur au potentiel de 12 V. Une borne d'alimentation de type et de forme connues 7 surplombe ledit couvercle 5. Elle est par exemple constituée de plomb.Entre ladite borne d'alimen- - tation et la plaque circulaire 4 située au fond du corps 1 s'étend, solidaire et de la borne, et de la plaque, un élément fusible 8 calibré de façon appropriée à un seuil de surinten- sité prédéterminé, et constitué de préférence d'une lame de cuivre ou d'aluminium. Ledit fusible empoche donc tout déplacement axial vers le haut sur la figure , de la borne 7, et donc du couvercle 5. Un ressort 9 à l'état compressé est disposé autour de l'élément fusible, à l'intérieur du corps 1 et de l'ouverture de l'élément cylindrique 3, ses deux extré- mités s'appuyant respectivement sur la plaque conductrice 4 et sur la surface inférieure de la saillie annulaire 5a du couvercle 5.The cylindrical element. 3 has 9 on its lower end part 1 a circular plate 4 of a conductive material, arranged to come into electrical contact with the bottom of said body 1 when the element 3 is screwed into the body 1. There is also a cover 5, arranged to fit on the cylindrical element 3 by an annular projection 5a disposed in its center and penetrating into the opening of the cylindrical element 50 The element 5 is preferably made of the same insulating material that the cylindrical element 3, and has in its center an opening 5b for the purposes explained below. The cover 5 further comprises, on its outer periphery, an annular recess arranged to receive an annular conductive lug 6 connected to a cable intended for supplying electrical power to the starter of the vehicle, and for pressing said terminal, in a manner explained below, against the conductive surface of said flanged part of the conductive body at the potential of 12 V. A terminal supply of known type and shape 7 overhangs said cover 5. It is for example made of lead. Between said supply terminal and the circular plate 4 located at the bottom of the body 1 extends, integral and the terminal, and from the plate, a fusible element 8 calibrated appropriately at a predetermined overcurrent threshold, and preferably consisting of a copper or aluminum strip. Said fuse therefore pockets any axial movement upwards in the figure, of terminal 7, and therefore of cover 5. A spring 9 in the compressed state is arranged around the fuse element, inside the body 1 and of the opening of the cylindrical element 3, its two ends resting respectively on the conductive plate 4 and on the lower surface of the annular projection 5a of the cover 5.

Le fonctionnement du dispositif selon l'invention est le suivant : de façon connue, des organes électriques conven- tionnels d'un véhicule a moteur sont reliés de façon appropriée à la borne d'alimentation 7 du dispositif
Lorsque, accidentellement, l'un des câbles d'alimentation de ces organes vient å entrer en contact électrique avec la masse du véhicule, reliée à l'autre borne de l'accumulateur 2, ce qui indique vraisemblablement un choc sur le véhicule, dû à un accidents alors la violente surintensité correspondante circulant dans le fusible 8 provoque la rupture de celui-ci.Ainsi le ressort 9 est libéré et éjecte lors de sa détente le couvercle 5, 9 et donc la cesse 6 d'alimentation du démarreur. Ainsi la borne positive de l'accoimulateur du véhicule est désolidarisée de tout organe de contact électrique d'alimentations la borne d'alimentation 7 étant également éjectée, et la source positive ne comprend plus que le corps creux 1 et l'élément cylindrique 3, et-il est fort peu vraisemblable que la petite surface de contact restante puisse venir en contact avee la masse du véhicule.The operation of the device according to the invention is as follows: in known manner, conventional electrical members of a motor vehicle are suitably connected to the supply terminal 7 of the device
When, accidentally, one of the power cables of these members comes into electrical contact with the earth of the vehicle, connected to the other terminal of the accumulator 2, which probably indicates an impact on the vehicle, due in an accident then the corresponding violent overcurrent flowing in the fuse 8 causes the latter to rupture. Thus the spring 9 is released and ejects when it relaxes the cover 5, 9 and therefore stops 6 supplying the starter. Thus the positive terminal of the vehicle accimimulator is disconnected from any electrical contact member for power supplies, the supply terminal 7 also being ejected, and the positive source only comprises the hollow body 1 and the cylindrical element 3, and it is very unlikely that the small remaining contact surface can come into contact with the mass of the vehicle.

On pourra également prévoir un tel dispositif sur chacune des bornes de l'accumulateur, la sécurité obtenue étant accrue.It is also possible to provide such a device on each of the terminals of the accumulator, the safety obtained being increased.

Ainsi l'invention permet, des qu'un câble à potentiel positif-vient à entrer en contact avec la masse du véhicule, d'interrompre, au niveau mEme de l'accumulateur, toute 'ali- mentation en énergie électrique de câbles circulant dans le véhicule, y compris le câble d'alimentation du démarreur, le risque d'apparition d'étincelles, et donc d'un incendie, étant ainsi rigoureusement évité.Thus the invention makes it possible, as soon as a cable with positive potential comes into contact with the mass of the vehicle, to interrupt, even at the level of the accumulator, any supply of electrical energy to cables circulating in the vehicle, including the starter power cable, the risk of sparks, and therefore of a fire, being strictly avoided.

Bien entendu, la présente forme de réalisation n'est décrite qu'à titre d'exemple non limitatif 1 et toute modification que pourra y apporter l'Homme de l'Art dans le cadre de ses connaissances normales est incluse dans la portée de l'invention. Of course, the present embodiment is only described by way of nonlimiting example 1 and any modification that may be made by those skilled in the art within the scope of their normal knowledge is included in the scope of the 'invention.

Claims (4)

REVENDICATIONS 1. Dispositif coupe-circuit de sécurité pour générateur de courant, du type c mprenant, entre au moins une borne dudit générateur et au moins un câble d'alimentation en énergie électriques des moyens fusibles agencés pour se rompre lorsque le courant qui les traverse dépasse une valeur de seuil prédéterminée, caractérisé par le fait qu'il comprend on outre des moyens élastiques agencés pour éjecter de ladite borne au moins une partie d'organes électriques d'alimentation en contact avec ladite borne lorsque lesdits moyens fusibles se rompent. 1. Safety circuit-breaker device for current generator, of type c including, between at least one terminal of said generator and at least one electrical power supply cable of the fuse means arranged to break when the current which passes through them exceeds a predetermined threshold value, characterized in that it further comprises elastic means arranged to eject from said terminal at least a portion of electrical supply members in contact with said terminal when said fusible means fail. 2. Dispositif selon la revendication 1, dans lequel le générateur de courant est l'accumulateur d'un véhicule, lesdits moyens fusibles étant agencée pour provoquer ltéjec- tion d'une cosse d'alimentation d'un démarreur électrique dudit véhicule lors de leur rupture, le courant d'alimentation dudit démarreur ne traversant pas lesdits moyens fusibles. 2. Device according to claim 1, in which the current generator is the accumulator of a vehicle, said fusible means being arranged to cause the ejection of a supply terminal of an electric starter of said vehicle during their rupture, the supply current of said starter not passing through said fusible means. 3. Dispositif selon la 'revendication 29 lequel comporte un couvercle (5) soumis à la poussée d'un ressort (9) et appliquant la cosse d'alimentation (6) dudit démarreur contre une surface de contact (lb), maintenu en place grâce auxdits moyens fusibles (8) , le ressort (9) étant libéré lorsque lesdits moyens fusibles (8) se rompent. 3. Device according to 'claim 29 which comprises a cover (5) subjected to the thrust of a spring (9) and applying the supply terminal (6) of said starter against a contact surface (lb), held in place thanks to said fusible means (8), the spring (9) being released when said fusible means (8) fail. 4. Dispositif selon la revendication 3, dans lequel lesdits moyens fusibles comprennent une lame de cuivre ou d'aluminium reliée à une borne cylindrique d'alimentation (7) surplombant-ledit couvercle (5j.  4. Device according to claim 3, in which said fusible means comprise a copper or aluminum strip connected to a cylindrical supply terminal (7) overhanging said cover (5j.
FR8219951A 1982-11-29 1982-11-29 Safety cut-out for battery. Granted FR2536914A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8219951A FR2536914A1 (en) 1982-11-29 1982-11-29 Safety cut-out for battery.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8219951A FR2536914A1 (en) 1982-11-29 1982-11-29 Safety cut-out for battery.

Publications (2)

Publication Number Publication Date
FR2536914A1 true FR2536914A1 (en) 1984-06-01
FR2536914B1 FR2536914B1 (en) 1985-05-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR8219951A Granted FR2536914A1 (en) 1982-11-29 1982-11-29 Safety cut-out for battery.

Country Status (1)

Country Link
FR (1) FR2536914A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566346A1 (en) * 1984-06-25 1985-12-27 Brunet Pierre Safety device for battery with projecting terminals.
FR2764013A1 (en) * 1997-06-02 1998-12-04 Eastman Kodak Co Verification procedure for correct functioning of load detector shield

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696539A (en) * 1953-04-30 1954-12-07 Edward W Peterson Dual circuit electrical safety device
DE2058920A1 (en) * 1970-11-30 1972-06-15 Paul Markreiter Fuse for the electric circuit in motor vehicles
DE2439533A1 (en) * 1974-08-17 1976-03-04 Klaus Ries Fuse system for all components in vehicle - fuse bridging solenoid for starter motor
CA1020221A (en) * 1974-09-19 1977-11-01 Rejean Hachez Circuit-breaker for storage batteries

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696539A (en) * 1953-04-30 1954-12-07 Edward W Peterson Dual circuit electrical safety device
DE2058920A1 (en) * 1970-11-30 1972-06-15 Paul Markreiter Fuse for the electric circuit in motor vehicles
DE2439533A1 (en) * 1974-08-17 1976-03-04 Klaus Ries Fuse system for all components in vehicle - fuse bridging solenoid for starter motor
CA1020221A (en) * 1974-09-19 1977-11-01 Rejean Hachez Circuit-breaker for storage batteries

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566346A1 (en) * 1984-06-25 1985-12-27 Brunet Pierre Safety device for battery with projecting terminals.
FR2764013A1 (en) * 1997-06-02 1998-12-04 Eastman Kodak Co Verification procedure for correct functioning of load detector shield

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Publication number Publication date
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