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EP2979328B1 - Control module, heating device and assembling method of said module - Google Patents

Control module, heating device and assembling method of said module Download PDF

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Publication number
EP2979328B1
EP2979328B1 EP14711759.2A EP14711759A EP2979328B1 EP 2979328 B1 EP2979328 B1 EP 2979328B1 EP 14711759 A EP14711759 A EP 14711759A EP 2979328 B1 EP2979328 B1 EP 2979328B1
Authority
EP
European Patent Office
Prior art keywords
rod
skirt
control module
module according
module
Prior art date
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Active
Application number
EP14711759.2A
Other languages
German (de)
French (fr)
Other versions
EP2979328A1 (en
Inventor
Stéphane De Souza
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Systemes Thermiques SAS
Original Assignee
Valeo Systemes Thermiques SAS
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Publication date
Application filed by Valeo Systemes Thermiques SAS filed Critical Valeo Systemes Thermiques SAS
Publication of EP2979328A1 publication Critical patent/EP2979328A1/en
Application granted granted Critical
Publication of EP2979328B1 publication Critical patent/EP2979328B1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
    • H01R43/24—Assembling by moulding on contact members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0441—Interfaces between the electrodes of a resistive heating element and the power supply means
    • F24H3/0447—Forms of the electrode terminals, e.g. tongues or clips
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/60—Connections between or with tubular conductors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
    • H05B3/50—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H2250/00—Electrical heat generating means
    • F24H2250/02—Resistances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/26—Connectors or connections adapted for particular applications for vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
    • H01R25/16—Rails or bus-bars provided with a plurality of discrete connecting locations for counterparts
    • H01R25/161—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/016—Heaters using particular connecting means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/022—Heaters specially adapted for heating gaseous material
    • H05B2203/023—Heaters of the type used for electrically heating the air blown in a vehicle compartment by the vehicle heating system

Definitions

  • the present invention relates to a control module of an electrical apparatus, and a heating device, in particular for a motor vehicle, comprising such a control module.
  • the present invention further relates to a method of assembling such a module.
  • the patent application EP 1 282 191A2 discloses a conductive member provided with a skirt receiving a rod.
  • the invention applies in particular to the technical field of additional electric heating devices for motor vehicles.
  • Such heaters are particularly used in the first minutes of starting a motor vehicle, when the engine is not hot enough to ensure the supply of hot air in the passenger compartment of the vehicle.
  • This heating time is for example between 15 and 20 minutes for a Diesel type engine.
  • An additional heating device generally comprises a support frame on which are mounted parallel heating modules arranged to be traversed by a flow of air to be heated.
  • Each heating module comprises two electrodes between which are placed resistive elements of the positive temperature coefficient (PTC) type. Two opposite heat sinks are attached to the electrodes, so as to increase the exchange surface with the air flow to be heated.
  • PTC positive temperature coefficient
  • Each heating module thus comprises a positive terminal.
  • the positive terminals are electrically connected via the same electrically conductive connecting member to the positive terminal of a battery.
  • the negative terminal of each heating module is electrically connected to the negative terminal of the battery.
  • control module also called "Driver”.
  • the control module is mounted in a housing fixed to the support frame.
  • connection between the rod and the member does not allow the use of large electrical powers and is limited to powers below 1000 Watts because of the reduced contact between the rod and the organ which is only done by the inner surface of the orifice in contact with a corresponding surface of the rod.
  • the invention aims in particular to provide a simple, effective and economical solution to these problems.
  • the force-fitting of one end of the rod in a skirt formed around the periphery of the orifice makes it possible to increase the contact surface between the rod and the connecting member, which allows the use of electrical appliances of higher power, for example 1200 Watts.
  • the increase of the contact surface allows a good control of the insertion force of the rod in the skirt, which is not possible when the contact surfaces are reduced as in the prior art.
  • connection of the rod to the member also ensures a better mechanical connection of the two parts.
  • the skirt is formed on a face of the member opposite to that from which the rod extends.
  • the free end of the rod is substantially flush with the free edge of the skirt.
  • the stem comprises a radial shoulder abutting on the member thus making it possible to control the positioning in force of the rod in the member.
  • the rod comprises at least one annular groove in which the electrically insulating lining extends, in order to improve the mechanical connection of the rod to the lining which is integral with the body.
  • the skirt is advantageously formed in one piece with the member which is made for example by a jogging operation.
  • the orifice, the skirt and the stem have a circular section.
  • the skirt has a diameter of about 4 mm and a height of between 1.5 mm and 2.5 mm.
  • the invention also relates to a heating device, in particular for a motor vehicle, comprising a module as described above and at least one heating module, one terminal of which is electrically connected to the aforementioned member.
  • the figure 1 represents an additional electrical heating device 10 according to the prior art, intended to equip a motor vehicle.
  • a heating device 10 is especially used in the first minutes of use of the motor vehicle, when the engine is not hot enough to ensure the supply of hot air into the passenger compartment of the vehicle.
  • This device 10 comprises a support frame 12 of parallelepiped shape on which are mounted heating modules 14 parallel and arranged to be traversed by a flow of air A to be heated.
  • the heating modules 14 are controlled by means of a control module 16 ( figure 2 ) or "Driver" mounted in a housing 18 fixed to the support frame 12.
  • Each heating module 14 comprises two electrodes 20, 22, one of which corresponds to a positive terminal and the other to a negative terminal, between which resistive elements of the positive temperature coefficient type are placed.
  • Two opposed heat sinks 24 are fixed on the electrodes, so as to increase the exchange surface with the air flow to be heated.
  • the heat sinks 24 are for example formed of folded or corrugated metal ribbons.
  • Each heating module 14 thus comprises a positive terminal electrically connected to the positive terminal of a battery and a negative terminal electrically connected to the negative terminal of the battery via a printed circuit board 26 on which are soldered or mounted various electrical or electronic components 28.
  • the electrical connections between the electronic components 28 of the control module 16, the heating modules 14 and the battery are provided by electrically conductive members.
  • three conductive members 30a, 30b, 30c connect the negative terminals of the heating modules 14 to the printed circuit board 26.
  • Another conductive member 32 connects the positive terminal of the battery to the positive terminals of the various heating modules 14.
  • the various conductive members 30a, 30b, 30c, 32 are mechanically connected to one another and electrically insulated from each other by a plastic-molded over-molded packing 34 which acts as a support so that said conductive members 30a, 30b , 30c, 32 and the liner 34 form a unitary assembly.
  • the liner 34 is fixed on the printed circuit board.
  • the conductive member 32 is connected to the positive terminal of the battery via a metal rod 36, one end of which is inserted and held in an orifice of the member 32 ( figures 2 and 3 ).
  • the rod comprises two annular grooves 40 located on either side of the conductive member 32. Apertures 38 are formed in the thickness of the member 32 so as to allow the passage of the insulating lining 34 through the body. in the grooves 40 of the rod 36.
  • the rod 36 is in contact with the member 32 only by its surface 42 in contact with the inner surface 44 of the orifice, which is insufficient to transmit the electrical energy required for the operation of apparatus high power, especially greater than 1000 Watts.
  • the figure 4 represents in isolation a conductive member 46 according to the invention which comprises a first 48, a second 50 and a third 52 tabs substantially parallel to each other, each tab being intended to be connected to a positive terminal of a heating module 14 described with reference to the figure 1 .
  • the first 48, second 50 and third 52 tabs are interconnected by a central portion 54, one end carries a fourth tab 56 extending away from the third tab 52 and substantially perpendicular thereto.
  • the fourth leg 56 of the member 46 comprises an orifice 58 whose periphery comprises a skirt 60 of substantially cylindrical shape which extends in the same direction as the first, second and third legs from the fourth leg 56.
  • one end of the rod 59 is forced into the skirt 60 through the orifice 58 ( Figures 4 and 5 ), the other end of the rod being intended to be connected to the positive terminal of the battery.
  • the rod 59 extends from the fourth leg 56 in a direction opposite the first 48, second 50 and third 52 tabs.
  • the rod 59 comprises a radial shoulder 62 allowing abutment of the rod 59 on the fourth leg 56 of the member 46, this shoulder 62 being positioned so that the mounting end face of the rod 59 is substantially flush with the free edge of the cylindrical skirt 60.
  • a counter-punching operation is performed on the end face of the rod 59 to locally compress the material of the rod 59 on the inner face of the skirt 60, which ensures a good mechanical strength of the rod 59 on the member 46 and a better contact with the skirt 60 for good transmission of electrical energy.
  • the end of the rod 59 also comprises an annular groove 64 formed to be positioned facing the face of the fourth tab 56 opposite the skirt 60.
  • the fourth leg 56 of the member comprises openings 66 for the passage of a synthetic lining 68 which is molded on either side of the fourth lug 56 and in the groove 64 of the rod.
  • the skirt 60 has a diameter of the order of 4 mm and a height of between 1.5 mm and 2.5 mm, which does not change the configuration of adjacent parts.
  • the cylindrical skirt 60 is made in one piece with the conductive member 46 by a trimming operation well known to those skilled in the art.
  • the skirt has a frustoconical shape and the end of the rod also has a frustoconical shape adapted to its insertion force into the skirt of the conductive member.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
  • Air-Conditioning For Vehicles (AREA)

Description

La présente invention concerne un module de commande d'un appareil électrique, ainsi qu'un dispositif de chauffage, notamment pour véhicule automobile, comportant un tel module de commande. La présente invention concerne en outre un procédé d'assemblage d'un tel module.The present invention relates to a control module of an electrical apparatus, and a heating device, in particular for a motor vehicle, comprising such a control module. The present invention further relates to a method of assembling such a module.

Le document WO 2011 076 638A1 divulgue un module de commande selon le préambule de la revendication 1.The document WO 2011 076 638A1 discloses a control module according to the preamble of claim 1.

La demande de brevet EP 1 282 191A2 divulgue un organe conducteur muni d'une jupe recevant une tige.The patent application EP 1 282 191A2 discloses a conductive member provided with a skirt receiving a rod.

L'invention s'applique notamment au domaine technique des dispositifs de chauffage électriques additionnels pour véhicules automobiles. De tels dispositifs de chauffage sont notamment utilisés dans les premières minutes de démarrage d'un véhicule automobile, lorsque le moteur n'est pas suffisamment chaud pour assurer l'apport d'air chaud dans l'habitacle du véhicule. Ce temps de chauffe est par exemple compris entre 15 et 20 minutes pour un moteur de type Diesel.The invention applies in particular to the technical field of additional electric heating devices for motor vehicles. Such heaters are particularly used in the first minutes of starting a motor vehicle, when the engine is not hot enough to ensure the supply of hot air in the passenger compartment of the vehicle. This heating time is for example between 15 and 20 minutes for a Diesel type engine.

Un dispositif de chauffage additionnel comprend en général un cadre support sur lequel sont montés des modules de chauffage parallèles agencés de façon à être traversés par un flux d'air à chauffer.An additional heating device generally comprises a support frame on which are mounted parallel heating modules arranged to be traversed by a flow of air to be heated.

Chaque module de chauffage comprend deux électrodes entre lesquelles sont placés des éléments résistifs du type à coefficient de température positif (CTP). Deux dissipateurs thermiques opposés sont fixés sur les électrodes, de façon à augmenter la surface d'échange avec le flux d'air à chauffer.Each heating module comprises two electrodes between which are placed resistive elements of the positive temperature coefficient (PTC) type. Two opposite heat sinks are attached to the electrodes, so as to increase the exchange surface with the air flow to be heated.

Chaque module de chauffage comprend ainsi une borne positive. Les bornes positives sont reliées électriquement par l'intermédiaire d'un même organe de liaison électriquement conducteur à la borne positive d'une batterie. La borne négative de chaque module de chauffage est reliée électriquement à la borne négative de la batterie.Each heating module thus comprises a positive terminal. The positive terminals are electrically connected via the same electrically conductive connecting member to the positive terminal of a battery. The negative terminal of each heating module is electrically connected to the negative terminal of the battery.

Pour assurer la liaison électrique de cet organe jusqu'à la borne positive de la batterie, il est connu de former un orifice dans l'organe et d'y insérer une extrémité d'une tige métallique conductrice dont l'autre extrémité est mise en contact avec la borne positive de la batterie.To ensure the electrical connection of this member to the positive terminal of the battery, it is known to form an orifice in the member and to insert one end of a conductive metal rod whose other end is placed in contact with the positive terminal of the battery.

Plus particulièrement, l'organe précité et la tige sont intégrés à un module de commande, également appelé « Driver ». Le module de commande est monté dans un boîtier fixé au cadre support.More particularly, the aforementioned member and the rod are integrated in a control module, also called "Driver". The control module is mounted in a housing fixed to the support frame.

La liaison entre la tige et l'organe n'autorise pas l'utilisation de puissances électriques importantes et est limitée à des puissances inférieures à 1000 Watts du fait du contact réduit entre la tige et l'organe qui se fait uniquement par la surface interne de l'orifice en contact avec une surface correspondante de la tige.The connection between the rod and the member does not allow the use of large electrical powers and is limited to powers below 1000 Watts because of the reduced contact between the rod and the organ which is only done by the inner surface of the orifice in contact with a corresponding surface of the rod.

De plus, le maintien mécanique de la liaison entre la tige et l'organe s'avère insuffisant.In addition, the mechanical maintenance of the connection between the rod and the body is insufficient.

L'invention a notamment pour but d'apporter une solution simple, efficace et économique à ces problèmes.The invention aims in particular to provide a simple, effective and economical solution to these problems.

A cet effet, elle propose un module de commande selon la revendication 1.For this purpose, it proposes a control module according to claim 1.

Selon l'invention, le montage à force d'une extrémité de la tige dans une jupe formée sur le pourtour de l'orifice permet d'augmenter la surface de contact entre la tige et l'organe de liaison, ce qui autorise l'utilisation d'appareils électriques de plus forte puissance, par exemple de 1200 Watts.According to the invention, the force-fitting of one end of the rod in a skirt formed around the periphery of the orifice makes it possible to increase the contact surface between the rod and the connecting member, which allows the use of electrical appliances of higher power, for example 1200 Watts.

De plus, l'augmentation de la surface de contact permet un bon contrôle de l'insertion en force de la tige dans la jupe, ce qui n'est pas possible lorsque les surfaces en contact sont réduites comme dans la technique antérieure.In addition, the increase of the contact surface allows a good control of the insertion force of the rod in the skirt, which is not possible when the contact surfaces are reduced as in the prior art.

Enfin, la liaison de la tige à l'organe assure également une meilleure liaison mécanique des deux pièces.Finally, the connection of the rod to the member also ensures a better mechanical connection of the two parts.

De préférence, la jupe est formée sur une face de l'organe opposée à celle depuis laquelle s'étend la tige.Preferably, the skirt is formed on a face of the member opposite to that from which the rod extends.

Selon une autre caractéristique de l'invention, l'extrémité libre de la tige affleure sensiblement le bord libre de la jupe.According to another characteristic of the invention, the free end of the rod is substantially flush with the free edge of the skirt.

Préférentiellement, la tige comprend un épaulement radial venant en butée sur l'organe permettant ainsi de contrôler le positionnement en force de la tige dans l'organe.Preferably, the stem comprises a radial shoulder abutting on the member thus making it possible to control the positioning in force of the rod in the member.

Préférentiellement, la tige comprend au moins une gorge annulaire dans laquelle s'étend la garniture électriquement isolante, afin d'améliorer la liaison mécanique de la tige à la garniture qui est solidaire de l'organe.Preferably, the rod comprises at least one annular groove in which the electrically insulating lining extends, in order to improve the mechanical connection of the rod to the lining which is integral with the body.

La jupe est avantageusement formée d'une seule pièce avec l'organe qui est réalisé par exemple par une opération de soyage.The skirt is advantageously formed in one piece with the member which is made for example by a jogging operation.

Dans une réalisation pratique de l'invention, l'orifice, la jupe et la tige ont une section circulaire. La jupe a un diamètre de l'ordre de 4 mm et une hauteur comprise entre 1,5 mm et 2,5 mm.In a practical embodiment of the invention, the orifice, the skirt and the stem have a circular section. The skirt has a diameter of about 4 mm and a height of between 1.5 mm and 2.5 mm.

L'invention concerne également un dispositif de chauffage, notamment pour véhicule automobile, comportant un module tel que décrit précédemment et au moins un module de chauffage dont une borne est reliée électriquement à l'organe précité.The invention also relates to a heating device, in particular for a motor vehicle, comprising a module as described above and at least one heating module, one terminal of which is electrically connected to the aforementioned member.

L'invention telle que définie dans la revendication 10 concerne encore un procédé d'assemblage du module décrit ci-dessus, caractérisé en ce qu'il comprend les étapes consistant à :

  • insérer une extrémité de la tige à force dans la jupe au travers de l'orifice jusqu'à ce que ladite extrémité affleure sensiblement le bord libre de la jupe ; puis à
  • réaliser un contre-poinçonnage de la face d'extrémité de la tige insérée dans la jupe et surmouler ladite garniture entourant l'extrémité de la tige et s'étendant de part et d'autre de l'organe au travers des ouvertures (66) de l'organe.
The invention as defined in claim 10 further relates to a method of assembling the module described above, characterized in that it comprises the steps of:
  • inserting one end of the rod forcibly into the skirt through the orifice until said end is substantially flush with the free edge of the skirt; then to
  • counter-punching the end face of the rod inserted in the skirt and overmolding said gasket surrounding the end of the rod and extending on either side of the member through the openings (66) of the organ.

D'autres avantages et caractéristiques de l'invention apparaîtront à la lecture de la description suivante faite à titre d'exemple non limitatif et en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue de face d'un dispositif de chauffage selon la technique antérieure ;
  • la figure 2 est une vue en perspective, de l'avant, d'un module de commande du dispositif de chauffage de la figure 1,
  • la figure 3 est une vue schématique en perspective et en coupe de la liaison d'une tige à un organe de conduction électrique agencé dans un module de la figure 2 ;
  • la figure 4 est une vue en perspective d'un organe de conduction électrique destiné à être utilisé dans un module de commande selon l'invention ;
  • la figure 5 est une vue schématique en perspective et en coupe de la liaison d'une tige à un organe de conduction électrique selon l'invention ;
Other advantages and characteristics of the invention will appear on reading the following description given by way of nonlimiting example and with reference to the appended drawings in which:
  • the figure 1 is a front view of a heater according to the prior art;
  • the figure 2 is a perspective view, from the front, of a control module of the heating device of the figure 1 ,
  • the figure 3 is a schematic perspective view in section of the connection of a rod to an electrical conduction member arranged in a module of the figure 2 ;
  • the figure 4 is a perspective view of an electrical conduction member for use in a control module according to the invention;
  • the figure 5 is a schematic perspective view in section of the connection of a rod to an electrical conduction member according to the invention;

La figure 1 représente un dispositif de chauffage électrique additionnel 10 selon la technique antérieure, destiné à équiper un véhicule automobile. Un tel dispositif de chauffage 10 est notamment utilisé dans les premières minutes d'utilisation du véhicule automobile, lorsque le moteur n'est pas suffisamment chaud pour assurer l'apport d'air chaud dans l'habitacle du véhicule.The figure 1 represents an additional electrical heating device 10 according to the prior art, intended to equip a motor vehicle. Such a heating device 10 is especially used in the first minutes of use of the motor vehicle, when the engine is not hot enough to ensure the supply of hot air into the passenger compartment of the vehicle.

Ce dispositif 10 comprend un cadre support 12 de forme parallélépipédique sur lequel sont montés des modules de chauffage 14 parallèles et agencés de façon à être traversés par un flux d'air A à chauffer. Les modules de chauffage 14 sont commandés à l'aide d'un module de commande 16 (figure 2) ou « Driver » monté dans un boîtier 18 fixé au cadre support 12.This device 10 comprises a support frame 12 of parallelepiped shape on which are mounted heating modules 14 parallel and arranged to be traversed by a flow of air A to be heated. The heating modules 14 are controlled by means of a control module 16 ( figure 2 ) or "Driver" mounted in a housing 18 fixed to the support frame 12.

Chaque module de chauffage 14 comprend deux électrodes 20, 22 dont l'une correspond à une borne positive et l'autre à une borne négative, entre lesquelles sont placées des éléments résistifs du type à coefficient de température positif. Deux dissipateurs thermiques 24 opposés sont fixés sur les électrodes, de façon à augmenter la surface d'échange avec le flux d'air à chauffer. Les dissipateurs thermiques 24 sont par exemple formés de rubans métalliques plissés ou ondulés.Each heating module 14 comprises two electrodes 20, 22, one of which corresponds to a positive terminal and the other to a negative terminal, between which resistive elements of the positive temperature coefficient type are placed. Two opposed heat sinks 24 are fixed on the electrodes, so as to increase the exchange surface with the air flow to be heated. The heat sinks 24 are for example formed of folded or corrugated metal ribbons.

Chaque module de chauffage 14 comprend ainsi une borne positive reliée électriquement à la borne positive d'une batterie et une borne négative reliée électriquement à la borne négative de la batterie par l'intermédiaire d'une carte de circuit imprimé 26 sur laquelle sont soudés ou montés différents composants électriques ou électroniques 28.Each heating module 14 thus comprises a positive terminal electrically connected to the positive terminal of a battery and a negative terminal electrically connected to the negative terminal of the battery via a printed circuit board 26 on which are soldered or mounted various electrical or electronic components 28.

Les liaisons électriques entre les composants électroniques 28 du module de commande 16, les modules de chauffage 14 et la batterie sont assurées par des organes électriquement conducteurs.The electrical connections between the electronic components 28 of the control module 16, the heating modules 14 and the battery are provided by electrically conductive members.

Plus particulièrement, trois organes conducteurs 30a, 30b, 30c relient les bornes négatives des modules de chauffage 14 à la carte de circuit imprimé 26.More particularly, three conductive members 30a, 30b, 30c connect the negative terminals of the heating modules 14 to the printed circuit board 26.

Un autre organe conducteur 32 relie la borne positive de la batterie aux bornes positives des différents modules de chauffage 14.Another conductive member 32 connects the positive terminal of the battery to the positive terminals of the various heating modules 14.

Les différents organes conducteurs 30a, 30b, 30c, 32 sont reliés mécaniquement les uns aux autres et isolés électriquement les uns des autres par une garniture 34 surmoulée en matériau synthétique et jouant le rôle de support de façon à ce que lesdits organes conducteurs 30a, 30b, 30c, 32 et la garniture 34 forment un ensemble unitaire. La garniture 34 est fixée sur la carte de circuit imprimé.The various conductive members 30a, 30b, 30c, 32 are mechanically connected to one another and electrically insulated from each other by a plastic-molded over-molded packing 34 which acts as a support so that said conductive members 30a, 30b , 30c, 32 and the liner 34 form a unitary assembly. The liner 34 is fixed on the printed circuit board.

L'organe conducteur 32 est relié à la borne positive de la batterie par l'intermédiaire d'une tige métallique 36 dont une extrémité est insérée et maintenue dans un orifice de l'organe 32 (figures 2 et 3). La tige comprend deux rainures annulaires 40 situées de part et d'autre de l'organe conducteur 32. Des ouvertures 38 sont formées dans l'épaisseur de l'organe 32 de manière à permettre le passage de la garniture isolante 34 au travers de l'organe et dans les rainures 40 de la tige 36.The conductive member 32 is connected to the positive terminal of the battery via a metal rod 36, one end of which is inserted and held in an orifice of the member 32 ( figures 2 and 3 ). The rod comprises two annular grooves 40 located on either side of the conductive member 32. Apertures 38 are formed in the thickness of the member 32 so as to allow the passage of the insulating lining 34 through the body. in the grooves 40 of the rod 36.

Comme indiqué précédemment, la tige 36 est en contact avec l'organe 32 uniquement par sa surface 42 en contact avec la surface interne 44 de l'orifice, ce qui s'avère insuffisant pour transmettre l'énergie électrique nécessaire au fonctionnement d'appareils électriques de grande puissance, notamment supérieure à 1000 Watts.As indicated above, the rod 36 is in contact with the member 32 only by its surface 42 in contact with the inner surface 44 of the orifice, which is insufficient to transmit the electrical energy required for the operation of apparatus high power, especially greater than 1000 Watts.

La figure 4 représente isolément un organe conducteur 46 selon l'invention lequel comprend une première 48, une deuxième 50 et une troisième 52 pattes sensiblement parallèles les unes aux autres, chaque patte étant destinée à être reliée à une borne positive d'un module de chauffage 14 décrit en référence à la figure 1. Les première 48, seconde 50 et troisième 52 pattes sont reliées entre elles par une partie centrale 54 dont une extrémité porte une quatrième patte 56 s'étendant à l'opposé de la troisième patte 52 et sensiblement perpendiculairement à celle-ci.The figure 4 represents in isolation a conductive member 46 according to the invention which comprises a first 48, a second 50 and a third 52 tabs substantially parallel to each other, each tab being intended to be connected to a positive terminal of a heating module 14 described with reference to the figure 1 . The first 48, second 50 and third 52 tabs are interconnected by a central portion 54, one end carries a fourth tab 56 extending away from the third tab 52 and substantially perpendicular thereto.

La quatrième patte 56 de l'organe 46 comprend un orifice 58 dont le pourtour comprend une jupe 60 de forme sensiblement cylindrique qui s'étend dans le même sens que les première, seconde et troisième pattes depuis la quatrième patte 56.The fourth leg 56 of the member 46 comprises an orifice 58 whose periphery comprises a skirt 60 of substantially cylindrical shape which extends in the same direction as the first, second and third legs from the fourth leg 56.

Selon l'invention, une extrémité de la tige 59 est insérée à force dans la jupe 60 à travers l'orifice 58 (figures 4 et 5), l'autre extrémité de la tige étant destinée à être reliée à la borne positive de la batterie. Ainsi, la tige 59 s'étend depuis la quatrième patte 56 dans un sens opposé aux première 48, seconde 50 et troisième 52 pattes.According to the invention, one end of the rod 59 is forced into the skirt 60 through the orifice 58 ( Figures 4 and 5 ), the other end of the rod being intended to be connected to the positive terminal of the battery. Thus, the rod 59 extends from the fourth leg 56 in a direction opposite the first 48, second 50 and third 52 tabs.

La tige 59 comprend un épaulement radial 62 permettant un montage en butée de la tige 59 sur la quatrième patte 56 de l'organe 46, cet épaulement 62 étant positionné de manière à ce qu'au montage la face d'extrémité de la tige 59 affleure sensiblement le bord libre de la jupe cylindrique 60.The rod 59 comprises a radial shoulder 62 allowing abutment of the rod 59 on the fourth leg 56 of the member 46, this shoulder 62 being positioned so that the mounting end face of the rod 59 is substantially flush with the free edge of the cylindrical skirt 60.

Après insertion de la tige 59 à l'intérieur de la jupe, une opération de contre poinçonnage est réalisée sur la face d'extrémité de la tige 59 pour réaliser une compression locale de la matière de la tige 59 sur la face interne de la jupe 60, ce qui permet de garantir une bonne tenue mécanique de la tige 59 sur l'organe 46 ainsi qu'un meilleur contact avec la jupe 60 pour une bonne transmission de l'énergie électrique.After insertion of the rod 59 inside the skirt, a counter-punching operation is performed on the end face of the rod 59 to locally compress the material of the rod 59 on the inner face of the skirt 60, which ensures a good mechanical strength of the rod 59 on the member 46 and a better contact with the skirt 60 for good transmission of electrical energy.

L'extrémité de la tige 59 comprend également une rainure annulaire 64 formée de manière à être positionnée en regard de la face de la quatrième patte 56 opposée à la jupe 60. De manière similaire à ce qui a été décrit en référence à la figure 3, la quatrième patte 56 de l'organe comprend des ouvertures 66 pour le passage d'une garniture synthétique 68 venant se loger au moulage de part et d'autre de la quatrième patte 56 et dans la rainure 64 de la tige.The end of the rod 59 also comprises an annular groove 64 formed to be positioned facing the face of the fourth tab 56 opposite the skirt 60. In a manner similar to that described with reference to the figure 3 , the fourth leg 56 of the member comprises openings 66 for the passage of a synthetic lining 68 which is molded on either side of the fourth lug 56 and in the groove 64 of the rod.

Dans une réalisation pratique de l'invention, la jupe 60 a un diamètre de l'ordre de 4 mm et une hauteur comprise entre 1,5 mm et 2,5 mm, ce qui ne modifie pas la configuration des pièces adjacentes.In a practical embodiment of the invention, the skirt 60 has a diameter of the order of 4 mm and a height of between 1.5 mm and 2.5 mm, which does not change the configuration of adjacent parts.

La jupe cylindrique 60 est réalisée d'une seule pièce avec l'organe conducteur 46 par une opération de soyage bien connue de l'homme du métier.The cylindrical skirt 60 is made in one piece with the conductive member 46 by a trimming operation well known to those skilled in the art.

Dans une variante de réalisation de l'invention non représentée, la jupe a une forme tronconique et l'extrémité de la tige a également une forme tronconique adaptée à son insertion à force dans la jupe de l'organe conducteur.In an alternative embodiment of the invention not shown, the skirt has a frustoconical shape and the end of the rod also has a frustoconical shape adapted to its insertion force into the skirt of the conductive member.

Claims (10)

  1. Control module (16) of an electrical unit (10), comprising a connecting member (46) of electrically conductive material, a rod (59) for supplying current to the member, one end of the rod (59) being inserted into an aperture (58) of the member (46), and an electrically insulating filler (68) which mechanically supports the rod and the member (46), the filler (68) surrounding the end of the rod (59) and extending on either side of the member (46) through openings (66) in the member (46), characterized in that the rod (59) is force-fitted into a skirt (60) of the conductive member (46) formed on the periphery of the aperture (58).
  2. Control module according to Claim 1, characterized in that the skirt (60) is formed on a face of the member (46) opposite that from which the rod (59) extends.
  3. Control module according to Claim 2, characterized in that the free end of the rod (59) lies substantially flush with the free edge of the skirt (60).
  4. Control module according to any of the preceding claims, characterized in that the rod (59) comprises a radial shoulder (62) bearing on the member (46).
  5. Control module according to Claim 4, characterized in that the rod (59) comprises at least one annular groove (64) into which the electrically insulating filler extends.
  6. Control module according to any of the preceding claims, characterized in that the skirt (60) is formed in one piece with the member.
  7. Control module according to any of the preceding claims, characterized in that the skirt (60) has a diameter of the order of 4 mm and a height of between 1.5 mm and 2.5 mm.
  8. Control module according to any of the preceding claims, characterized in that the aperture (58), the skirt (60) and the rod (59) have a circular cross section.
  9. Heating device (10), notably for a motor vehicle, comprising a control module (16) according to any of the preceding claims and at least one heating module (14), a terminal (20, 22) of which is electrically connected to the aforesaid member (46).
  10. Method of assembling the control module (16) according to any of Claims 1 to 7, characterized in that it comprises the steps of:
    - force-fitting one end of the rod (59) into the skirt (60) through the aperture (58) until said end lies substantially flush with the free edge of the skirt (60); and then
    - die-punching the end face of the rod (59) fitted into the skirt (60) and overmoulding said filler (68) surrounding the end of the rod (59) and extending on either side of the member (46) through openings (66) in the member (46).
EP14711759.2A 2013-03-26 2014-03-21 Control module, heating device and assembling method of said module Active EP2979328B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1352739A FR3004009B1 (en) 2013-03-26 2013-03-26 CONTROL MODULE OF AN ELECTRICAL APPARATUS
PCT/EP2014/055696 WO2014154579A1 (en) 2013-03-26 2014-03-21 Control module for an electric appliance

Publications (2)

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EP2979328A1 EP2979328A1 (en) 2016-02-03
EP2979328B1 true EP2979328B1 (en) 2019-04-10

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EP (1) EP2979328B1 (en)
KR (1) KR101746323B1 (en)
CN (1) CN105164862B (en)
FR (1) FR3004009B1 (en)
WO (1) WO2014154579A1 (en)

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Publication number Priority date Publication date Assignee Title
FR3037193B1 (en) * 2015-06-04 2020-10-16 Auxel TERMINAL CURRENT DISTRIBUTOR
FR3049776B1 (en) 2016-03-29 2019-06-21 Valeo Systemes Thermiques ELECTRICAL CONNECTION DEVICE, HEATING DEVICE AND VENTILATION INSTALLATION, HEATING AND / OR AIR CONDITIONING
FR3076973B1 (en) * 2018-01-15 2019-12-13 Valeo Systemes Thermiques ELECTRIC HEATING DEVICE
CN111629515B (en) * 2019-02-28 2024-07-19 法雷奥汽车空调湖北有限公司 Bus bar system
CN112009202B (en) * 2019-05-31 2024-10-29 法雷奥汽车空调湖北有限公司 Heating device
CN211008824U (en) * 2019-11-03 2020-07-14 浙江锦佳汽车零部件有限公司 Urea pump

Citations (1)

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Publication number Priority date Publication date Assignee Title
EP1282191A2 (en) * 2001-08-04 2003-02-05 Siemens Aktiengesellschaft Electrical circuit with conducting strips

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Publication number Priority date Publication date Assignee Title
US6619873B2 (en) * 2001-09-06 2003-09-16 Federal-Mogul World Wide, Inc. Device and method for closing movable socket assemblies by expanding solid cover plates
EP1912295A1 (en) * 2006-10-09 2008-04-16 Delphi Technologies, Inc. Bus bar
FR2916933B1 (en) * 2007-06-01 2009-09-04 Valeo Systemes Thermiques DEVICE FOR ELECTRICAL CONNECTION BETWEEN AN ELECTRICAL POWER SOURCE AND AN ELECTRICAL RADIATOR, AND A METHOD OF MAKING SUCH A CONNECTING DEVICE
DE102009047763A1 (en) * 2009-12-10 2011-06-16 Robert Bosch Gmbh Hochstromkontaktierung and corresponding method for producing a Hochstromkontaktieranordnung
FR2954606B1 (en) * 2009-12-23 2019-05-10 Valeo Systemes Thermiques CONNECTOR FOR ELECTRIC CIRCUIT BOARD, ELECTRICAL CIRCUIT BOARD AND CORRESPONDING ELECTRICAL HEATING DEVICE
FR2954607B1 (en) * 2009-12-23 2019-10-18 Valeo Systemes Thermiques CONNECTION DEVICE FOR POWERING ELECTRICAL EQUIPMENT

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EP1282191A2 (en) * 2001-08-04 2003-02-05 Siemens Aktiengesellschaft Electrical circuit with conducting strips

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Publication number Publication date
CN105164862A (en) 2015-12-16
FR3004009B1 (en) 2017-02-17
KR20150123292A (en) 2015-11-03
KR101746323B1 (en) 2017-06-12
WO2014154579A1 (en) 2014-10-02
CN105164862B (en) 2018-12-25
EP2979328A1 (en) 2016-02-03
FR3004009A1 (en) 2014-10-03

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