EP0020398A1 - Soldering iron with unremovable electric heating - Google Patents

Soldering iron with unremovable electric heating

Info

Publication number
EP0020398A1
EP0020398A1 EP19790901100 EP79901100A EP0020398A1 EP 0020398 A1 EP0020398 A1 EP 0020398A1 EP 19790901100 EP19790901100 EP 19790901100 EP 79901100 A EP79901100 A EP 79901100A EP 0020398 A1 EP0020398 A1 EP 0020398A1
Authority
EP
European Patent Office
Prior art keywords
handle
soldering iron
sleeve
tube
intermediate sleeve
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.)
Withdrawn
Application number
EP19790901100
Other languages
German (de)
French (fr)
Inventor
Gérard GRANDCLEMENT
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.)
Sam Innovation Technique
Original Assignee
Sam Innovation Technique
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 Sam Innovation Technique filed Critical Sam Innovation Technique
Publication of EP0020398A1 publication Critical patent/EP0020398A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • B23K3/02—Soldering irons; Bits
    • B23K3/03—Soldering irons; Bits electrically heated

Definitions

  • the invention described below relates to an electrically heated soldering iron for small solderings with tin or equivalent.
  • Such devices generally comprise an insulating handle receiving a metal tube whose other end envelops the heating resistance wound on a frame, this frame bearing, itself, the tip, of solder intended to be heated, by the resistance when the cord power supply is connected to the electrical source which is 220 Volts in the most common case.
  • the connections between the strands of the conductor, of the supply and of the resistance outputs are generally made inside the handle, either by tightening by screw terminals, or by winding the ends together.
  • the isolation of the resistor outputs is generally achieved by braided flexible sheaths, poorly resistant to the temperature which is around 500 ° C. around the heating resistance.
  • the holding in the handle of the metal tube of a port, and of the supply conductor on the other hand, are obtained by the use of several fixing and tightening screws in order to ensure solidity and safety against shocks electric. Ies current achievements, either do not meet the criteria of safety against electric shocks and the rules of the art, or require the use of a large number of parts and a long manufacturing time.
  • the invention described below relates to a soldering iron in which Ie few component parts, these being made of selected materials and with desired shapes to obtain excellent electrical safety, at the same time as mounting stmple giving solid appatites.
  • a der derder according to the invention comprises a sleeve termedaire made of heat resistant insulating material, in which the metal tube connecting to the heating resistor is held by tight fitting, this intermediate sleeve having a part entering the handle also made of insulating material and snapping into it .
  • the intermediate sleeve includes sets of partitions and ribs making it possible to insulate the conductors between them, between them and the accessible metal parts of the device, between the various connections, it also makes it possible to maintain, by tightening in the handle, the supply conductor using teeth which, at the end of assembly, penetrate into the sheath of the supply conductor.
  • the handle must support the tube 3 which, in its upper part, carries the heating element.
  • an intermediate sleeve 4 is used.
  • the connecting tube 3 bridges at its upper end the hollow resistance mount 5 in which the soldering tip 6 engages and around which the heating resistor 75 is wound, which then enters the connecting tube 3 by the upper end of the latter.
  • the heating resistor 15 being of the known type, we have not deemed it useful to represent it in detail.
  • the metal connecting tube 3 must be long enough so that its upper part is very hot during use, of the order of 400 to 500 ° C., its lower part is cold enough not to heat the handle.
  • the heating resistor is electrically connected to the power cord by 2 connection wires 7.
  • These 2 connection wires 7 are made of flat wire as shown in the drawings or round section. They are preferably made of nickel or cupro nickel to be weldable on the stripped ends of the copper strands S of the power cord 2.
  • connection wires 7 can be very hot on leaving the heating resistor, of the order of 500 "C.
  • a rigid insulating tube 9 made of ceramic material which is a long cylinder comprising 2 longitudinal holes visible in fIgure "a" on the cut part of the tube 9.
  • the connection wires 7 pass through these holes.
  • the tube 9 is long enough to go without discontinuity from the heating resistance not detailed up to the intermediate sleeve 4, so. insulate the wires 7 of the tube 3 up to the lower end of the latter.
  • the sleeve 4 is made of insulating material which is resistant to heat well since it supports the interlayer part of the connecting tube 3 which, in continuous operation, can be at 120 ° C.
  • This sleeve must also have good dielectric properties, since it provides insulation between various conductors.
  • a thetmoplastic material of the glass-filled polyamide type is very suitable.
  • the shape of the sleeve is such that this part can be produced by injection molding without resuming subsequent machining.
  • the sleeve 4 in its upper part, has a circular cross-section hole slightly smaller than the outside diameter of the tube 3, so that the tube 3 can be force-fitted therein for their mutual fixing during assembly.
  • the parts are shown assembled. In its middle part, the interior of the sleeve 4 is separated longltldunally into 3 parts by 2 partitions.
  • 1 partition 10 visible in section in figure "a” is also visible in figure “b”; a partition 11 visible in FIG. "a” is visible in partial section in FIG. "b", this partition continuing downwards from the sleeve 4, becoming a flat part 12.
  • the upper ends of the partitions 10 and 11 serve as stops for the tube insulator 9.
  • connection wires 7 between them on the one hand, between them and a ground wire 13 on the other hand; this wire is necessary for certain safety standards in order to connect the metallic parts that can be touched, to the installation ground pat in termiteite of a third electrical conductor 16.
  • the ground wire 13 is welded by an electrical welding point 14 on the connection tube 3, then passing under the partition 11, it ends in the lower part of the intermediate sleeve to be fixed by welding, to the conductor 16.
  • This ground wire 13 is preferably made of nickel or cupro nichel for the reason already, explained above.
  • the 2 connection wires 7 and the ground wire 13 arrive in the middle part of the sleeve 4 opposite the 3 strands S and 16 of the power cord 2.
  • connection wires 7 and the ground wire 13 are each welded to a strand of the power cord, by a standard weld 17.
  • the welds can also be replaced by crimps using crimp rings for example.
  • the electrical continuity of the 2 conductors with the resistance and of the ground wire with the tube 3, are thus produced as well as the different insulations.
  • the handle 1 of the soldering iron can be assembled by engaging it from bottom to top around the sleeve 4. This handle is produced by injection with a thermoplastic material flexible enough to undergo slight deformations without breaking, for example polypropylene. The handle is shown mounted on the attached drawings.
  • the handle comprises a cylindrical part 18 of the same diameter as the cylindrical part opposite the sleeve 4 or slightly clamping, with a chamfer 19 in its inlet to facilitate centering at the start of assembly of the handle. Following the cylindrical part 18 there is a toric groove.
  • the material used for the handle is flexible enough to allow the release of this groove undercut if its depth is about 0.5 mm at the radius. After this groove, the handle has a conical interior shape, narrowing downwards.
  • the sleeve 4 has a toric bead 21 too, which, after having passed through the diameter 18 of the handle while slightly deforming it elastically, is housed when the device is mounted in the groove 20 of the handle, If the bead 21 has a thickness at the radius of approximately 0.4 mm, the force necessary for the fitting is approximately 500 kg. same force would be necessary to extract the sleeve from the handle, where great strength.
  • the sleeve 4 comprises, at the lower part of its fabric 12, teeth 22 perpendicular to.
  • the sheath insulating cord 2 having a much weaker hardness than the teeth 22 of the sleeve, these teeth penetrate into the sheath by deforming it, ensuring the resistance of the cord against traclions or twists carried out by the user and so that these twists or pulls are not transmitted to the mechanically fragile enough welds 17.
  • Such a configuration makes it possible to withstand pulls of around 200 to 300 Newton, carried out on the power cable. It goes from ground to ground that the present invention has been described above, only to be explanatory but not limiting. and that we can bring all useful variants without going beyond its scope.

Abstract

Le fer a souder comporte une poignee isolante (1) reliee au tube de liaison (3) portant l'ensemble chauffant, par l'intermediaire d'un manchon isolant (4), le tube de liaison metallique (3) etant emmanche dans ce manchon (4), et ce manchon (4) etant ensuite emmanche dans la poignee (1) suivant leur axe commun, avec un verrouillage des pieces. Le manchon (4) comporte des cloisons internes (11) delimitant trois passages de fils, et un organe de serrage (23) du cordon d'alimentation (2).The soldering iron comprises an insulating handle (1) connected to the connection tube (3) carrying the heating assembly, by means of an insulating sleeve (4), the metal connection tube (3) being fitted into this sleeve (4), and this sleeve (4) then being fitted into the handle (1) along their common axis, with a locking of the parts. The sleeve (4) has internal partitions (11) delimiting three son passages, and a clamping member (23) of the power cord (2).

Description

Titre :. FER A SOUPER A CHAUFFAGE ELECTR IQUE INDEMONTABLETitle:. SOLDERING IRON WITH ELECTRONIC HEATER UNMOUNTABLE
L' invention décrite, ci-dessous, porte sur un fer à iouder à chauffage électrique pour les petites soudures à l' étain ou équivalent. De tels appareils comportent généralement une poignée isolante recevant un tube metallique dont l'a utre extrémité envetoppe la résistance chauffante bobinée sur &a monture, cette, monture portant, ellemême, la panne, de soudure destinée à être chauffée, par la résistance quand le cordon d' alimentation est branché sut la source électrique qui est dz 220 Volts dans le cas le plus courant. Dans Ies appareils actuels, Ies connexions entre Ies brins du conducteur, d' alimentation et Ies sorties de résistance, sont généralement réalisées à l'intérieur de la poignée, soit par serrage par bornes a vis, soit par enroulage des extrémités znsemblz. L' isolement des sorties de résistan¬ts, est généralement réalisé par des gaines souples tressées, résistant mal à la température qui est d' environ 500° C autour de la résistance chauffante.The invention described below relates to an electrically heated soldering iron for small solderings with tin or equivalent. Such devices generally comprise an insulating handle receiving a metal tube whose other end envelops the heating resistance wound on a frame, this frame bearing, itself, the tip, of solder intended to be heated, by the resistance when the cord power supply is connected to the electrical source which is 220 Volts in the most common case. In current devices, the connections between the strands of the conductor, of the supply and of the resistance outputs, are generally made inside the handle, either by tightening by screw terminals, or by winding the ends together. The isolation of the resistor outputs is generally achieved by braided flexible sheaths, poorly resistant to the temperature which is around 500 ° C. around the heating resistance.
Le maintien dans la poignée du tube métallique d' une port, et du conducteur d' alimentation d' autre part, sont obtenus par l' emploi de plusieurs vis de fixation et de serrage afin d' assurer la solidité et la sécurité contre Ies chocs électriques . Ies réalisations actuelles , ou bien ne satisfont pas aux criteres de sécurité contre Ies chocs électriques et aux règles de l' art, ou bien demandent l emploi d' un nombre important de pièces et un temps de fa¬brication long. L'invention décrite ci-dessous a pour objet un fer à souder dans Iequel rentrent peu de piéces constitutives, celles-ci étant fabriquées dans des matériaux choisis et avec des formes voulues pour obtenir une excellente sécurité électrique, en même temps qu' un montage stmple donnant des appateits solides .The holding in the handle of the metal tube of a port, and of the supply conductor on the other hand, are obtained by the use of several fixing and tightening screws in order to ensure solidity and safety against shocks electric. Ies current achievements, either do not meet the criteria of safety against electric shocks and the rules of the art, or require the use of a large number of parts and a long manufacturing time. The invention described below relates to a soldering iron in which Ie few component parts, these being made of selected materials and with desired shapes to obtain excellent electrical safety, at the same time as mounting stmple giving solid appatites.
Un autre avantage de l invention est que l'isolement thermique entre le tube portant la résistance chauffante et la poignee est amélioré, réduisant notablement l échauffement de la poignee en cas d' usage intensif, tout en permettant de raccourcir la longueur du tube métallique de liaison. Un der à souder suivant l' Invention comporte un manchon in- termédlaire en matériau isoiant résistant à la chaleur, dans 'lequel le tube métallique de liaison à la résistance chauffante est maintenu par emmanchement serré, ce manchon intermédiaire ayant une partie entrant dans la poignée réalisée, elle aussi, en matériau isolant et s 'y encliquetant. Le manchon intermédiaire comporte des jeux de cloisons et nervures permettant de réaliser les isolements entre les conducteurs entre eux, entre ceux-ci et les parties métalliques accessi blés de l' appareil, entre les diverses connexions , il permet également de maintenir, par serrage dans la poignée, le conducteur d' ali- mentation en utilisant des dents qui, en fIn d' assemblage, pénètrent dans la gaine du conducteur d' alimentation.Another advantage of the invention is that the thermal insulation between the tube carrying the heating resistance and the handle is improved, notably reducing the heating of the handle in case of intensive use, while making it possible to shorten the length of the metal tube. liaison. A der derder according to the invention comprises a sleeve termedaire made of heat resistant insulating material, in which the metal tube connecting to the heating resistor is held by tight fitting, this intermediate sleeve having a part entering the handle also made of insulating material and snapping into it . The intermediate sleeve includes sets of partitions and ribs making it possible to insulate the conductors between them, between them and the accessible metal parts of the device, between the various connections, it also makes it possible to maintain, by tightening in the handle, the supply conductor using teeth which, at the end of assembly, penetrate into the sheath of the supply conductor.
L'Invention sera mieux comprise avec ta description d'un mode de réalisation pris comme exemple, mais non linitatlf, auquel se rattachent les dessins de la planche unique dans lesquels : - le dessin "a" représente une vue longitudinale d'un fer à souder sui vant l' invention, dans laquelle certaines pièces ont été partiellement coupées , - le dessin "b" représente le même fer suivant le dessin "a" vu de droite et, ici aussi, certaines pièces ont été partlellement coupées . La polgnée 1 destinée à étre maintenue à la main par l' utilisateur es t creuse afin d' y passer l' extrémité du câble d' alimentation électrique 2 que l'on n'a pas représenté en entier.The invention will be better understood with your description of an embodiment taken as an example, but not linear, to which are attached the drawings of the single plate in which: - the drawing "a" represents a longitudinal view of an iron weld according to the invention, in which certain parts have been partially cut, - the drawing "b" represents the same iron according to the drawing "a" seen from the right and, here too, certain parts have been partially cut. The pole 1 intended to be held by hand by the user is hollow in order to pass the end of the power supply cable 2 which has not been shown in full.
D'autre part., la poignée doit supporter le tube 3 qui, dans sa partie supérieure, porte l organe de chauffage. Pour cela, on utilise un manchon intermédiaire 4. Le tube de liaison 3 ponte à son extrémité supérieure la monture de résistance 5 creuse dans laquelle s ' engage la panne de soudage 6 et autour de laquelle est bobinée la résistance chauffante 75 qui rentre ensuite dans le tube de liaison 3 par l' extrémité supérieure de ce dernier. La résistance chauffante 15 étant du type connu, nous n'avons pas jugé utile de la représenter en détail.On the other hand, the handle must support the tube 3 which, in its upper part, carries the heating element. For this, an intermediate sleeve 4 is used. The connecting tube 3 bridges at its upper end the hollow resistance mount 5 in which the soldering tip 6 engages and around which the heating resistor 75 is wound, which then enters the connecting tube 3 by the upper end of the latter. The heating resistor 15 being of the known type, we have not deemed it useful to represent it in detail.
Le tube de liaison métallique 3 doit être assez long pour que sa partie supérleure étant très chaude en cours d' utilisation, de l' ordre de 400 à 500° C, sa partie inférieure soit suffisamment froide pour ne pas échauffer la poignée. La résistance chauffante est reliée électriquement au cordon d' alimentation par 2 fils de connexion 7. Ces 2 fils de connexion 7 sont réalisés en fIl méplat comme représenté sur les dessins ou de section ronde. Ils sont de préférence en nickel ou cupro nickel pour être soudables a l' étaln sur les extrémités dénudées des brins S en cuivre du cordon d' alimentation 2.The metal connecting tube 3 must be long enough so that its upper part is very hot during use, of the order of 400 to 500 ° C., its lower part is cold enough not to heat the handle. The heating resistor is electrically connected to the power cord by 2 connection wires 7. These 2 connection wires 7 are made of flat wire as shown in the drawings or round section. They are preferably made of nickel or cupro nickel to be weldable on the stripped ends of the copper strands S of the power cord 2.
Les fi ls de connexion 7 peuvent être très chauds à leur sortie de la résistance chauffante, de l' ordre de 500" C.The connection wires 7 can be very hot on leaving the heating resistor, of the order of 500 "C.
Pour les isoler électriquement l' un de l' autre d' une part, par rapport au tube de liaison qui peut être touché par l' utilisateur d'autre part, on utilise un tube isolant rigide 9 en matériau céramique qui est un cylindre long comportant 2 trous, longitudinaux visibles en fIgure "a" sut la partie coupée du tube 9. Les fIls de connexion 7 passent dans ces trous . Le tube 9 est assez long pour aller sans discontinulté de la résistance de chauffage non détaillée jusqu' au manchon intennédiaire 4, de faςon á. isolér les fils 7 du tube 3 jusqu' à l' extrémité basse de ce dernier. Le manchon 4 est réalisé en matériau isolant résistant bien à la chaleur puisqu'il supporte la partie lnférleure du tube de liaison 3 qui, en fonctlonnement continu, peut êtie a 120 ° C. Ce manchon doit aussi avoir de bonnes propriétés diélectriques, puisqu'il assurz les isolements entre divers conducteurs . Un matériau thetmoplastique du type polyamide chargé de verre convient très bien. La forme du manchon est telle que cette pièce peut être réalisée en Injection sans reprise d'usinage ultérieure.To electrically isolate them from each other on the one hand, relative to the connecting tube which can be touched by the user on the other hand, a rigid insulating tube 9 made of ceramic material is used which is a long cylinder comprising 2 longitudinal holes visible in fIgure "a" on the cut part of the tube 9. The connection wires 7 pass through these holes. The tube 9 is long enough to go without discontinuity from the heating resistance not detailed up to the intermediate sleeve 4, so. insulate the wires 7 of the tube 3 up to the lower end of the latter. The sleeve 4 is made of insulating material which is resistant to heat well since it supports the interlayer part of the connecting tube 3 which, in continuous operation, can be at 120 ° C. This sleeve must also have good dielectric properties, since it provides insulation between various conductors. A thetmoplastic material of the glass-filled polyamide type is very suitable. The shape of the sleeve is such that this part can be produced by injection molding without resuming subsequent machining.
Le manchon 4, dans sa partie supérieure, comporte un trou de section circulaire légèrement plus petit que le diamètre extérieur du tube 3, afin que le tube 3 puisse y être emmanché en force pour leur fixation mutuelle au montage. Sur les dessins joints, les pièces sont reprzsentées assemblées . Dans sa pattiz médiane, l'intérleur du manchon 4 est séparé longltldunalement en 3 parties par 2 cloisons . 1 cloison 10 visible en coupe sur la figure "a" est visible également sut la figure "b" ; une cloison 11 visible en figure "a" est visible en coupe partielle sut la figure "b", cette cloison continuant vers le bas du manchon 4 en devenant une partie plate 12. Les extrémités supérieures des cloisons 10 et 11 servent de butée au tube isolant 9. Ces cloisons permettent d' obtenir l'isolation électrique des f ils de connexion 7 entre eux d' une part, entre eux et un fil de masse 13 d' autre part ; ce fil est nécessaire pour certaines normes de sécurité afin de relier les pièces métalliques pouvant être touchées , à la masse d'Installation pat l'in termédiaite d' un troisième conducteur électrique 16. Le fiI ' de masse 13 est soudé par un point de soudure électrique 14 sur le tube de liaison 3, puis passant sous la cloison 11 , il aboutit dans la partie in férleure du manchon intermédiaire pour y être fixé pat soudure, au conducteur 16. Ce fil de masse 13 est préférentiellement réalisé en nickel ou cupro nichel pour la raison déjà, expliquée ci-dessus . Les 2 fils de connexion 7 et le fil de masse 13 arrivent dans la partie milieu du manchon 4 en regard des 3 brins S et 16 du cordon d' alimentation 2. Les fils de connexion 7 et le fil de masse 13 sont soudés chacun à un brin du cordon d' alimentation, par une soudure à l' étaln 17. Les soudures peuvent aussi être remplacées par des sertissages à l'aide d'anneaux à sertir par exemple. Les continuités électriques des 2 conducteurs avec la résistance et du fil de masse avec le tube 3, sont ainsi réalisées ainsi que les différents isolements . La poignée 1 du fer à souder peut être assemblée en l' engageant de bas en haut autour du manchon 4. Cette poignée est réalisée par injection avec un matériau thermoplastique assez souple pour subir sans rupture de légères déformations, par exemple en polypropylène. La poignée est représentez montee sur les dessins joints . Elle comporte une partie cylindrique 18 du même diamètre que la partie cylindrique en regard du manchon 4 ou légèrement serrante, avec un chanfrein 19 dans son entrée pout faciliter le centrage au début du montage de la poignée. A la suite de la partie cylindrique 18 se tiouve une gorge torique. Le matériau utilisé pout la poignée est assez souple pour permettre le démoulage de cette gorge en contre dépouille si sa profondeur est de 0, 5 mm au rayon environ. Après cette gorge, la poignée a une forme intérieure conique, se rétrécissant vers le bas. manchon 4 comporte un bourrelet 21 torique lui aussi, qui, après, être passé dans le diamètre 18 de la poignée en déformant légèrement celleci élastiquement, vient se loger au montage de l' appareil dans la gorge 20 de la poignée, Si le bourrelet 21 a une épaisseur au rayon de 0, 4 mm environ, la force nécessaire à l' emmanchement est de 500 kg environ. même force serait nécessaire pout extraire le manchon de la poignée, d' où une grande solidité. Le manchon 4 comporte, à la partie inférleure de sa toile 12, des dents 22 perpendiculaires à. l' axe du fer qui pénètrent dans la gaine isolante du cordon d'alimentation 2 au fur et à mesure de l' emmanchement de la poignée : celle-ci étant conique, le cordon d' alimentation s ' appuie d'un côté sur la paroi Intérieure de la poignée et de l' autre coté, reçoit les dents 22 qui sont poussées dans la gaine Isolante, ces dents étant, elles-mêmes , poussées par des nervures 23 faites en bas de la toile 12 et qui s 'appuient, sur la paroi Intérieure de la poignée 1. La gaine isolante du cordon 2 ayant une dureté beaucoup plus faibie que les dents 22 du manchon, ces dents pénètrent dans la gaine en la déformant, assurant la tenue du cordon contre des traclions ou des torsions effectuées par l'utilisateur et afin que ces torsions ou tractions ne soient pas transmises aux soudures 17 mécaniquement assez fragiles. Une telle configuratlon permet de résister à des tractions de 200 à 300 Newton environ, effectuées sur le cable d' alimentation, II va de sol que la présente invention n' a été décrite, ci-dessus, qu' à tltre explicatif mais non limitatif et que l' on pourra y apporter toutes variantes utiles sans sortir de son cadre. The sleeve 4, in its upper part, has a circular cross-section hole slightly smaller than the outside diameter of the tube 3, so that the tube 3 can be force-fitted therein for their mutual fixing during assembly. In the accompanying drawings, the parts are shown assembled. In its middle part, the interior of the sleeve 4 is separated longltldunally into 3 parts by 2 partitions. 1 partition 10 visible in section in figure "a" is also visible in figure "b"; a partition 11 visible in FIG. "a" is visible in partial section in FIG. "b", this partition continuing downwards from the sleeve 4, becoming a flat part 12. The upper ends of the partitions 10 and 11 serve as stops for the tube insulator 9. These partitions make it possible to obtain electrical insulation of the connection wires 7 between them on the one hand, between them and a ground wire 13 on the other hand; this wire is necessary for certain safety standards in order to connect the metallic parts that can be touched, to the installation ground pat in termiteite of a third electrical conductor 16. The ground wire 13 is welded by an electrical welding point 14 on the connection tube 3, then passing under the partition 11, it ends in the lower part of the intermediate sleeve to be fixed by welding, to the conductor 16. This ground wire 13 is preferably made of nickel or cupro nichel for the reason already, explained above. The 2 connection wires 7 and the ground wire 13 arrive in the middle part of the sleeve 4 opposite the 3 strands S and 16 of the power cord 2. The connection wires 7 and the ground wire 13 are each welded to a strand of the power cord, by a standard weld 17. The welds can also be replaced by crimps using crimp rings for example. The electrical continuity of the 2 conductors with the resistance and of the ground wire with the tube 3, are thus produced as well as the different insulations. The handle 1 of the soldering iron can be assembled by engaging it from bottom to top around the sleeve 4. This handle is produced by injection with a thermoplastic material flexible enough to undergo slight deformations without breaking, for example polypropylene. The handle is shown mounted on the attached drawings. It comprises a cylindrical part 18 of the same diameter as the cylindrical part opposite the sleeve 4 or slightly clamping, with a chamfer 19 in its inlet to facilitate centering at the start of assembly of the handle. Following the cylindrical part 18 there is a toric groove. The material used for the handle is flexible enough to allow the release of this groove undercut if its depth is about 0.5 mm at the radius. After this groove, the handle has a conical interior shape, narrowing downwards. sleeve 4 has a toric bead 21 too, which, after having passed through the diameter 18 of the handle while slightly deforming it elastically, is housed when the device is mounted in the groove 20 of the handle, If the bead 21 has a thickness at the radius of approximately 0.4 mm, the force necessary for the fitting is approximately 500 kg. same force would be necessary to extract the sleeve from the handle, where great strength. The sleeve 4 comprises, at the lower part of its fabric 12, teeth 22 perpendicular to. the axis of the iron which penetrate into the insulating sheath of the power cord 2 as and when the handle is engaged: the latter being conical, the power cord is supported on one side on the interior wall of the handle and on the other side , receives the teeth 22 which are pushed into the insulating sheath, these teeth being, themselves, pushed by ribs 23 made at the bottom of the fabric 12 and which rest on the interior wall of the handle 1. The sheath insulating cord 2 having a much weaker hardness than the teeth 22 of the sleeve, these teeth penetrate into the sheath by deforming it, ensuring the resistance of the cord against traclions or twists carried out by the user and so that these twists or pulls are not transmitted to the mechanically fragile enough welds 17. Such a configuration makes it possible to withstand pulls of around 200 to 300 Newton, carried out on the power cable. It goes from ground to ground that the present invention has been described above, only to be explanatory but not limiting. and that we can bring all useful variants without going beyond its scope.

Claims

R E V E N D I C A T I O N SR E V E N D I C A T I O N S
1 ° Fer à souder à résistance chauffante dans lequel la poignée isolante est reliée au tube, de liaison métallique portant l' ensemble de chauffage, par l'intermédiaire d' un manchon en matériau isolant, catactétisé par le fait que l' extrémité du tube de Ii aison métallique du côté de la poignée est emmanché en force dans le manchon intermédiaire suivant leur axe commun, ce dernier étant lui-même emmanché dans la poignée suivant leur axe commun, le montage étant sans jeu ou légèrement serrant et comportant un verrouillage des pièces, tendant l'appareil indémontable par les moyens normaux.1 ° Soldering iron with heating resistance in which the insulating handle is connected to the tube, of metal connection carrying the heating assembly, by means of a sleeve of insulating material, catactized by the fact that the end of the tube of the metallic aison on the side of the handle is force fitted into the intermediate sleeve along their common axis, the latter itself being fitted into the handle along their common axis, the assembly being free of play or slightly tightening and comprising a locking of the parts, tensioning the device which cannot be dismantled by normal means.
2° Fer à souder suivant tevendication 1 , dans Iequel le verrouillage entre la poignée et le manchon interméciiaite est obtenu par bourrelet du manchon, prenant place dans une gorge de la poignée en fin d' emmanchement, cet emmanchement étant rendu possible pat l u tilisation d' un matériau thetmoplas tique légèrement souple pour la poignée.2 ° Soldering iron according to claim 1, in which the locking between the handle and the intermediate sleeve is obtained by a bead of the sleeve, taking place in a groove in the handle at the end of the fitting, this fitting being made possible by the use of '' a slightly flexible thetmoplastic material for the handle.
3° Fer à souder suivant les revendications 1 et 2 dans lequel la gorge de la poignée est réalisée en contre dépou ille dans l opération de moulage par injection de la dite poignée. 4° Fer à souder suivant la revendication 1 , suivant lequel le manchon intermédiaire comporte, dans son passage central du côté du tube de liaison, des cloisons délimitant 3 passages pour isoler. les connexions électriques vers la résistance électrique entre elles, par rapport au tube de liaison, et par rapport à une connexion de masse fixée au tube de liaison.3 ° Soldering iron according to claims 1 and 2 wherein the groove of the handle is made in undercut ille in the injection molding operation of said handle. 4 ° Soldering iron according to claim 1, according to which the intermediate sleeve comprises, in its central passage on the side of the connecting tube, partitions delimiting 3 passages to insulate. the electrical connections to the electrical resistance between them, with respect to the connection tube, and with respect to a ground connection fixed to the connection tube.
5° Fer à souder suivant les revendications 1 et. 4 suivant lequel le manchon intermédiaire comporte, dans sa partie entrant dans la poignée, une partie plate avec nervures et cloisons pour former plaque à connexions, ces nervures et cloisons étant agencées pour réalise les isoiements électrloues entre les conducteurs venant de la tésls tance électrique, ceux venant du cordon d' alimentation, et les dlf férentes soudures entre conducteurs . 6° fer à souder suivant revendication 1 dans lequel le manchon intermédiaire comporte, à son extrémité emmanchée dans la poignée, des ner vures à angle vif en forme de dents transversales par rapport au cordon d' alimentation, de telle sotte que, quand la poignée est emmanchée autour du manchon Intermédiaire, la gaine du conducteur soit pincée entre les dents ci-dessus, et l' intérieur, de la poignée légèrement conique, afin d'assurer le maintien en torsion et en traction du cordon d' alimentation. 5 ° Soldering iron according to claims 1 and. 4 according to which the intermediate sleeve comprises, in its part entering the handle, a flat part with ribs and partitions to form a connection plate, these ribs and partitions being arranged to carry out electrical isolation between the conductors coming from the electrical panel, those coming from the power cord, and the dfférentes welds between conductors. 6. soldering iron according to claim 1 wherein the intermediate sleeve has, at its end fitted into the handle, ner vures at a sharp angle in the form of teeth transverse to the power cord, such that, when the handle is fitted around the intermediate sleeve, the conductor's sheath is pinched between the teeth above, and the inside, of the slightly conical handle, in order to ensure the torsional and tensile support of the power cord.
EP19790901100 1978-09-22 1980-04-22 Soldering iron with unremovable electric heating Withdrawn EP0020398A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MC1329 1978-09-22
MC781329A MC1233A1 (en) 1978-09-22 1978-09-22 ELECTRIC HEATED SOLDERING IRON

Publications (1)

Publication Number Publication Date
EP0020398A1 true EP0020398A1 (en) 1981-01-07

Family

ID=19737968

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790901100 Withdrawn EP0020398A1 (en) 1978-09-22 1980-04-22 Soldering iron with unremovable electric heating

Country Status (3)

Country Link
EP (1) EP0020398A1 (en)
MC (1) MC1233A1 (en)
WO (1) WO1980000668A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3212537A1 (en) * 1982-04-03 1983-10-13 Bayer Ag, 5090 Leverkusen DEPOT DISPENSER, METHOD FOR THE PRODUCTION AND USE THEREOF
US5435821A (en) * 1985-12-12 1995-07-25 Exxon Research & Engineering Co. Controlled release vegetation enhancement agents coated with sulfonated polymers, method of production and prcesses of use
DE3621966A1 (en) * 1986-07-01 1988-01-14 Paff Stannol Loetmittel ELECTRIC HEATER, ESPECIALLY SOLDERING IRON
DE202004008391U1 (en) * 2004-05-26 2005-10-06 Cooper Tools Gmbh soldering iron
US7807949B2 (en) * 2006-02-28 2010-10-05 Hakko Corporation Locking mechanism for soldering iron

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1117469A (en) * 1964-07-02 1968-06-19 Goran Ygfors Improvements in electric soldering irons
DE2708967A1 (en) * 1977-03-02 1978-09-07 Friedrich G Fritsch Electric hand soldering iron - contg. thermocouple for accurate temp. control
GB1550437A (en) * 1977-09-16 1979-08-15 Brewster Ltd S & R Bits for soldering irons

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8000668A1 *

Also Published As

Publication number Publication date
WO1980000668A1 (en) 1980-04-17
MC1233A1 (en) 1979-10-26

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