EP2079133B1 - Connection terminal equipped with a socket for receiving a pin of an eletric plug, power outlet comprising such a terminal and method of manufacturing such a terminal - Google Patents
Connection terminal equipped with a socket for receiving a pin of an eletric plug, power outlet comprising such a terminal and method of manufacturing such a terminal Download PDFInfo
- Publication number
- EP2079133B1 EP2079133B1 EP08291170A EP08291170A EP2079133B1 EP 2079133 B1 EP2079133 B1 EP 2079133B1 EP 08291170 A EP08291170 A EP 08291170A EP 08291170 A EP08291170 A EP 08291170A EP 2079133 B1 EP2079133 B1 EP 2079133B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- terminal
- tongues
- cutting
- pair
- socket
- 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.)
- Not-in-force
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 239000002184 metal Substances 0.000 claims description 34
- 229910052751 metal Inorganic materials 0.000 claims description 34
- 210000002105 tongue Anatomy 0.000 claims description 34
- 238000005520 cutting process Methods 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims 3
- 230000005611 electricity Effects 0.000 claims 2
- 239000000463 material Substances 0.000 description 8
- 238000003780 insertion Methods 0.000 description 7
- 230000037431 insertion Effects 0.000 description 7
- 230000007935 neutral effect Effects 0.000 description 7
- 238000010292 electrical insulation Methods 0.000 description 5
- 239000007769 metal material Substances 0.000 description 4
- 238000004080 punching Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 210000003456 pulmonary alveoli Anatomy 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/20—Coupling parts carrying sockets, clips or analogous contacts and secured only to wire or cable
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2101/00—One pole
Definitions
- the present invention generally relates to the electrical connection terminals of sockets.
- the invention finds a particularly advantageous application in the production of a socket comprising a base for receiving such a terminal, closed at the front by a hubcap defining a receiving well of a plug whose bottom is provided with two electric plug pin holes.
- the electrical connection terminals already known comprise a metal strip in which are cut and folded two tabs so that they together form a clamp of a certain height defining an insertion stack of an electrical plug pin.
- Document is also known FR 2,538,174 an electrical connection terminal for connecting an electrical cable to a "pigtail” type connector.
- This terminal is derived from a metal strip wound on itself to define a chimney insertion of the "pigtail” and the electric cable.
- One end of this terminal has four connecting tabs folded inside the chimney to make electrical contact with the "pigtail”.
- the cutting and folding of the terminals and their tongues require complex tools, in particular to perform the folding along separate fold lines and inclined relative to each other so as to obtain the complex forms of chimney.
- terminals are not adjustable in that they are designed to receive only one type of electric pin or "pigtail".
- the present invention proposes a modular electrical connection terminal and particularly simple architecture since it is in the form of a flat bar.
- connection terminal according to claim 1.
- the four tabs together form a clamp adapted to receive an electrical plug pin and hold it laterally effectively.
- connection terminal is therefore inexpensive.
- the realization of the terminal according to the invention allows a metal material gain of about 40% compared to the material used to make a terminal according to the state of the art mentioned in the introduction.
- this terminal Furthermore, thanks to the simplicity of this terminal, the cutting and folding of the raw strip can be made simultaneously with a simple punching tool. The production rates of this terminal can be increased.
- the cell is adapted to accommodate pins of two different diameters or, more generally, of two different sections.
- the tongues of the first pair are also, due to their long lengths, particularly advantageous. Electrical plugs having a base and two pins of small sections which extend from the base and which are covered, over part of their length, with a electrical insulation sleeve. Thanks to the invention, the tabs of the first pair are long enough to come into electrical contact with the pins, beyond the electrical insulation sleeves.
- the terminal can withstand a large number of insertion maneuvers and extraction of pins, more than 5000 maneuvers.
- the invention also relates to a socket according to claims 6 and 7.
- the base comprises two receiving housings of said pins, each receiving housing extending in the axis of one of said cells and having an end opening facing this cell.
- the invention also relates to a manufacturing method according to claims 8 to 10.
- FIG. 1 schematically shown three terminals 10, 20, 20 'of electrical connection ready to be incorporated in a socket (not shown), including a phase terminal 20 and a neutral terminal 20' according to the invention, as well as a ground terminal 10.
- This socket not shown has a base of insulating material, closed at the front by a hubcap which has a recess well receiving a plug.
- the insertion well of the socket is delimited by a cylindrical side wall and a bottom wall. This bottom wall is pierced with two holes for the passage of two pins of an electrical plug (not shown) and a through hole of a ground pin (not shown) connected to the earth terminal 10 placed in the base of the socket.
- the ground pin emerges through the hole in the bottom of the hubcap in the receiving well of the socket.
- the base of the socket has inner compartments insulated from each other and intended to each receive one of the three terminals 10, 20, 20 'of electrical connection.
- the base is also adapted to be housed in a box to be embedded in any wall or in a projecting housing projecting on such a wall.
- the base provided with its hubcap is mounted on a device support (not shown) in the form of a frame, attached to the front face of a mounting box housed in a hole practiced in the wall.
- the equipment support is covered by a finishing plate, also in the form of a frame, which is supported on the recess wall by closing the front opening of the recess box and flanking the hubcap of the socket current.
- phase and neutral terminals 20 ' are each in the form of a metal strip 21, 21'.
- each terminal 20, 20' has an opening 22, 22 'inside which four tongues 23, 23', 24, 24 'extend in a cross shape. These tabs are distinct from each other. They are folded on the side of the same face of the metal strip 21, 21 'to delimit between them a cell 25, 25' for receiving a pin of an electrical plug.
- metal strip means a strip of metal material which has undergone a folding operation and / or a cutting operation. Such a metal strip is also known as a "flat strip”.
- the metal strip 21, 21 ' is in the form of a substantially flat bar made of copper material (for example brass) of small thickness, between 0.3 and 0.6 millimeters, with a rear face 27, 27' intended to be turned towards the bottom of the base of the socket and a front face 28, 28 'opposite.
- This metal strip 21, 21 ' has an outer peripheral edge 26, 26' of elongated shape and an inner peripheral edge which defines said opening 22, 22 'of generally square shape.
- This opening 22, 22 ' is located in the center of a portion of greater width of the metal strip 21, 21'.
- the cell 25, 25 'delimited by the tongues 23, 23', 24, 24 ' has an axis A1, A1' which passes through the center of the opening 22, 22 '.
- the four tabs 23, 23 ', 24, 24' extend from the four corners of the inner peripheral edge delimiting the opening 22, 22 '. They are cut in the metal strip 21, 21 'so that they form with it a single piece.
- each tab 23, 24 has an end free edge 23A, 24A and two parallel slices. Their widths are identical, of the order of 2 millimeters, so that they are elastically deformable.
- each tongue 23, 23 ', 24, 24' being folded towards the rear face 27, 27 'of the metal strip 21, 21', their free end edges 23A, 24A are not situated in the plane of the opening 22, 22 ', but rather away from the plane of this opening, the side of the rear face 27, 27' of the metal strip 21, 21 '.
- the folded portion of each tongue 23, 23 ', 24, 24' is inclined relative to the axis A1, A1 'by an angle of between 1 and 30 degrees, here substantially equal to 10 degrees.
- the four tabs 23, 23 ', 24, 24' are thus bent towards the rear face 27, 27 'of the metal strip 21, 21'.
- said four tongues 23, 23 ', 24, 24' extend opposite one another in pairs of same lengths.
- the tabs 23, 23' of a first pair have a first length I 1 while the tongues 24, 24 'of a second pair have a second length I2 strictly smaller than said first length I 1 (see figure 3 ).
- These lengths I 1 and I 2 are such that the folded portions of the tabs 23, 23 'of the first pair each have a minimum distance to the axis A1, A1' of the cell 25, 25 'less than 2 millimeters while the folded portions of the tabs 24, 24 'of the second pair each have a minimum distance to the main axis A1, A1' of the cell 25, 25 'between 2 and 2.4 millimeters.
- the cell 25 is adapted to accommodate pins of two different diameters. It is here more particularly adapted to accommodate the two types of pins 50, 51 used in France and Belgium, namely pins 50 of 4 millimeters in diameter and pins 51 of 4.8 millimeters in diameter.
- the length I 1 is such that the tabs 23 of the first pair can come into contact with the pin beyond the electrical insulation sleeve, in order to establish an electrical contact between the terminal 20 and the pin.
- the electrical contact between the terminal 20 and the pin 50 allows the passage of standard currents from 2.5 to 10 amperes.
- the diameter of the pin 51 engaged in the cell 25 is large (4.8 millimeters)
- the folded parts of all the tongues 23, 24 bear against this pin 51, so as to hold it rigidly. in terminal 20 (see figure 6 ).
- the electrical contact between the terminal 20 and the pin 51 allows the passage of large currents of about 20 amperes.
- the free end edges of the tabs 23, 23 'of the first pair are bevelled, so that they are inclined relative to the longitudinal axis of these tongues, preferably between 20 and 60 degrees.
- the amplitude of elastic deformation of these tongues 23, 23' is particularly large, compared with that of the tabs 24, 24 'of the second couple.
- the bevelling of the tongues 23, 23 'thus makes them more easily deformable, so that the force exerted on the electrical plug to engage its pins in the terminals 20, 20' is reduced.
- the terminal 20, 20 'further comprises fixing means to the base of the socket.
- these attachment means comprise, on either side of the central part of greater width of the metal strip 21, 21 ', a tab adapted to be inserted into a housing provided for this purpose in the corresponding insulated compartment of the base of the socket.
- the base of the socket has internally an element 60 provided with two receiving housings 61 of the two pins of the electrical plug, which extend in the axis of the cells 25 of the two terminals 20 (and 20 ') and which open out opposite these cells 25.
- the element 60 comes from formation with the bottom wall of the base.
- Its reception housings 61 are cylindrical holes of revolution about the axes A1 of the cells 25, of equal diameter, with the clearance, the diameter of the larger diameter pins that the socket is adapted to accommodate (here 4.8 millimeters).
- These two receiving housings 61 guide the two pins of the electrical plug when the engagement of this plug in the insertion well of the hubcap of the socket.
- a land terminal 10 comprising a metal strip 11 generally rectangular, provided with a receiving opening 12 of the earth pin and a window 14 to engage a centering pin (not shown) provided in the bottom of the base of the socket .
- the ground pin is more particularly adapted to be engaged and then crimped into the opening 12.
- the earth terminal 10 also comprises means for fixing the base.
- these fastening means here also include tabs adapted to be inserted in housings provided for this purpose in the corresponding compartment of the base of the socket, in this case the central compartment of the base.
- the metal strips 11, 21, 21 'of the three terminals of the socket are derived from a rectangular raw sheet 1 of reduced dimensions.
- This raw strip 1 here has a width less than 35 millimeters, here equal to 32 millimeters, and a length less than 40 millimeters, here equal to 36 millimeters.
- the phase and neutral terminals 20 ' have symmetrical geometries with respect to each other by mirror effect. They are also engaged in the base of the socket symmetrically with respect to the plane of symmetry of the metal strip 11 of the earth terminal 10.
- the tabs 23 of great lengths of the phase terminal 20 have an orientation about the axis A1 1 different from the orientation of the tabs 23 'of the neutral terminal 20'.
- the tabs of the two terminals 20 are oriented with an offset of 90 degrees.
- the manufacturing process of these three terminals 10, 20, 20 ' has two main steps. It comprises a first step of cutting flat in the raw strip 1 of the three metal strips 11, 21, 21 '.
- This step makes it possible to cut, on the one hand, the three metal strips 11, 21, 21 'to extract them from the raw strip 1, and, on the other hand, the peripheral edges of the openings 22, 22' to define the cells 25 , 25 '.
- Each metal strip 11, 21, 21 ' is then cut along a given contour corresponding to its outer peripheral edge 26.
- peripheral edges of the openings 22, 22 'of the metal strips 21, 21' are in turn cut in such a way that their contours remain delimited within the contour of the metal strip 21, 21 'and that they define the said four tongues 23 , 23 ', 24, 24'.
- the four tabs 23, 23 ', 24, 24' of each terminal 20, 20 ' are made in the initial material of the opening 22 to release the latter, with minimal material removal ( corresponding to the cutting game of the tool) between the tabs 23, 23 'of the first pair. They are further cut with a minimal removal of material between, on the one hand, the tabs 24, 24 ', and, on the other hand, the slices of the tabs 23, 23'.
- the tabs 23, 23 'of the first pair can, while they come from the initial material of the opening 22, 22', have long lengths, which allows them to to make electrical contact with the pins equipped with electrical insulation sleeves.
- the manufacturing method also comprises a folding step (also called a forming step) of the metal strips 11, 21, 21 '.
- the metal strips 11, 21, 21 'of the three terminals 10, 20, 20' are stamped so that they each have two end portions flanking a central portion which is provided with one of said openings 14, 22, 22 'and extending recess relative to these two end portions.
- the metal strips are not stamped and they extend in a plane.
- the four tabs 23, 23 ', 24, 24' of each opening 22, 22 '(cut in the raw strip 1) are folded in elbow to form protrusions rising on the same face 27, 27 'of the metal strip 21, 21' and delimiting between them said cell 25, 25 '( figure 4 ).
- the folding tool of these tabs advantageously has a conical shape, so that the end edges of the tongues are all circumscribed to the same cone.
- these two steps of cutting and folding are performed simultaneously.
- the particularly simple architecture of the three terminals 10, 20, 20 ' is such that it is possible, with the aid of a single punching tool, to cut and fold the raw strip 1.
- each electrical connection terminal it will be possible to arrange the four tabs of each electrical connection terminal such that they are adapted to receive an electrical pin of different section and a different standard, for example British ("British standard”) , American, etc ...
- a different standard for example British (“British standard") , American, etc ...
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Description
La présente invention concerne de manière générale les bornes de connexion électrique de prises de courant.The present invention generally relates to the electrical connection terminals of sockets.
Elle concerne plus particulièrement une borne de connexion électrique selon les caractéristiques de la partie préambule de la revendication 1.It relates more particularly to an electrical connection terminal according to the characteristics of the preamble part of claim 1.
L'invention trouve une application particulièrement avantageuse dans la réalisation d'une prise de courant comportant un socle d'accueil d'une telle borne, fermé à l'avant par un enjoliveur définissant un puits de réception d'une fiche électrique dont le fond est pourvu de deux trous de passage de broches de fiche électrique.The invention finds a particularly advantageous application in the production of a socket comprising a base for receiving such a terminal, closed at the front by a hubcap defining a receiving well of a plug whose bottom is provided with two electric plug pin holes.
Elle concerne également une prise de courant comprenant une telle borne ainsi qu'un procédé de fabrication d'une telle borne.It also relates to a socket comprising such a terminal and a method of manufacturing such a terminal.
Actuellement, les bornes de connexion électrique déjà connues comprennent un feuillard métallique dans lequel sont découpées et pliées deux languettes de manière qu'elles forment ensemble une pince d'une certaine hauteur définissant une cheminée d'insertion d'une broche de fiche électrique.Currently, the electrical connection terminals already known comprise a metal strip in which are cut and folded two tabs so that they together form a clamp of a certain height defining an insertion stack of an electrical plug pin.
On connaît également du document
Outre le fait que de telles bornes présentent des volumes importants, elles nécessitent l'utilisation d'une grande quantité de matière métallique pour réaliser leurs cheminées d'insertion.In addition to the fact that such terminals have large volumes, they require the use of a large amount of metal material to achieve their insertion chimneys.
Par ailleurs, le découpage et le pliage des bornes et de leurs languettes nécessitent un outillage complexe, en particulier pour réaliser le pliage suivant des lignes de pliage distinctes et inclinées les unes par rapport aux autres de manière à obtenir les formes complexes de cheminée.Furthermore, the cutting and folding of the terminals and their tongues require complex tools, in particular to perform the folding along separate fold lines and inclined relative to each other so as to obtain the complex forms of chimney.
Enfin, ces bornes ne sont pas modulables en ce sens qu'elles sont prévues pour ne recevoir qu'un seul type de broche électrique ou de "queue de cochon".Finally, these terminals are not adjustable in that they are designed to receive only one type of electric pin or "pigtail".
Afin de remédier aux inconvénients précités de l'état de la technique, la présente invention propose une borne de connexion électrique modulable et d'architecture particulièrement simple puisqu'elle se présente sous la forme d'une barrette plate.In order to overcome the aforementioned drawbacks of the state of the art, the present invention proposes a modular electrical connection terminal and particularly simple architecture since it is in the form of a flat bar.
Plus particulièrement, on propose selon l'invention une borne de connexion selon la revendication 1.More particularly, there is provided according to the invention a connection terminal according to claim 1.
Ainsi, grâce à l'invention, les quatre languettes forment ensemble une pince apte à recevoir une broche de fiche électrique et à la maintenir latéralement de façon efficace.Thus, thanks to the invention, the four tabs together form a clamp adapted to receive an electrical plug pin and hold it laterally effectively.
Ces languettes sont directement découpées et pliées de manière à libérer l'ouverture de passage de la broche. En d'autres termes, les languettes sont découpées dans la matière initiale de l'ouverture. La fabrication des languettes ne nécessite donc l'apport d'aucune matière métallique supplémentaire. Une telle borne de connexion est donc peu onéreuse.These tongues are directly cut and folded so as to release the passage opening of the spindle. In other words, the tabs are cut in the initial material of the opening. The manufacture of the tongues does not require the addition of any additional metal material. Such a connection terminal is therefore inexpensive.
La réalisation de la borne selon l'invention permet un gain de matière métallique d'environ 40% par rapport à la matière utilisée pour réaliser une borne selon l'état de la technique cité en introduction.The realization of the terminal according to the invention allows a metal material gain of about 40% compared to the material used to make a terminal according to the state of the art mentioned in the introduction.
Par ailleurs, grâce à la simplicité de cette borne, le découpage et le pliage du feuillard brut peuvent être réalisés simultanément à l'aide d'un simple outil de poinçonnage. Les cadences de production de cette borne peuvent ainsi être accrues.Furthermore, thanks to the simplicity of this terminal, the cutting and folding of the raw strip can be made simultaneously with a simple punching tool. The production rates of this terminal can be increased.
De plus, grâce aux différences de longueurs des languettes, l'alvéole est adapté à accueillir des broches de deux diamètres différents ou, plus généralement, de deux sections différentes.In addition, thanks to the differences in the lengths of the tongues, the cell is adapted to accommodate pins of two different diameters or, more generally, of two different sections.
Plus précisément, si la section de la broche engagée dans l'alvéole est réduite, seules les languettes du premier couple prennent appui contre cette broche.More specifically, if the section of the pin engaged in the cell is reduced, only the tabs of the first pair bear against this pin.
En revanche, si la section de la broche engagée dans l'alvéole est importante, l'ensemble des languettes prennent appui contre cette broche, au bénéfice de la connexion électrique et du maintien de la broche dans la borne. Dans ce cas, grâce à leurs faibles longueurs, les languettes du deuxième couple se déforment élastiquement avec une faible amplitude.On the other hand, if the section of the pin engaged in the cell is large, all the tabs bear against this pin, for the benefit of the electrical connection and the maintenance of the pin in the terminal. In this case, thanks to their short lengths, the tongues of the second pair deform elastically with a small amplitude.
Les languettes du premier couple sont en outre, grâce à leurs longueurs importantes, particulièrement avantageuses. On connaît en effet des fiches électriques comportant un socle et deux broches de petites sections qui s'étendent à partir du socle et qui sont recouvertes, sur une partie de leur longueur, d'un manchon d'isolation électrique. Grâce à l'invention, les languettes du premier couple sont suffisamment longues pour venir établir un contact électrique avec les broches, au-delà des manchons d'isolation électrique.The tongues of the first pair are also, due to their long lengths, particularly advantageous. Electrical plugs having a base and two pins of small sections which extend from the base and which are covered, over part of their length, with a electrical insulation sleeve. Thanks to the invention, the tabs of the first pair are long enough to come into electrical contact with the pins, beyond the electrical insulation sleeves.
Enfin, grâce à sa forme, la borne peut résister à un nombre important de manoeuvres d'insertion et d'extraction de broches, supérieur à 5000 manoeuvres.Finally, thanks to its shape, the terminal can withstand a large number of insertion maneuvers and extraction of pins, more than 5000 maneuvers.
D'autres caractéristiques avantageuses et non limitatives de la borne de connexion électrique conforme à l'invention sont énoncées dans les revendications 2 à 5.Other advantageous and non-limiting characteristics of the electrical connection terminal according to the invention are set forth in claims 2 to 5.
L'invention concerne également une prise de courant selon les revendications 6 et 7.The invention also relates to a socket according to claims 6 and 7.
Préférentiellement, le socle comporte deux logements d'accueil desdites broches, chaque logement d'accueil s'étendant dans l'axe de l'un desdits alvéoles et présentant une extrémité débouchant en regard de cet alvéole.Preferably, the base comprises two receiving housings of said pins, each receiving housing extending in the axis of one of said cells and having an end opening facing this cell.
Ces deux logements d'accueil permettent de guider les deux broches lors de l'engagement de la fiche électrique dans la prise de courant. Ils permettent en outre de maintenir latéralement les deux broches de la fiche électrique dans l'axe des alvéoles des deux bornes, de manière à éviter qu'un effort exercé transversalement sur la fiche électrique n'entraîne une déformation plastique permanente des languettes des deux bornes.These two homes allow to guide the two pins when engaging the power plug in the socket. They also make it possible to hold the two pins of the electrical plug laterally in the axis of the cells of the two terminals, so as to avoid that a force exerted transversely on the electrical plug causes permanent plastic deformation of the tabs of the two terminals. .
L'invention concerne aussi un procédé de fabrication selon les revendications 8 à 10.The invention also relates to a manufacturing method according to claims 8 to 10.
La description qui va suivre, en regard des dessins annexés, donnée à titre d'exemple non limitatif, fera bien comprendre en quoi consiste l'invention et comment elle peut être réalisée.The description which follows, with reference to the accompanying drawings, given by way of non-limiting example, will make it clear what the invention consists of and how it can be achieved.
Sur les dessins annexés :
- la
figure 1 est une vue en perspective arrière de trois bornes de connexion électrique, dont une borne de phase et une borne de neutre selon l'invention ainsi qu'une borne de terre ; - la
figure 2 est une vue en plan d'un alvéole de la borne de phase ou de neutre de lafigure 1 ; - la
figure 3 est une vue en plan d'un feuillard dans lequel sont découpées les trois bornes de lafigure 1 ; - la
figure 4 est une vue en perspective avant du feuillard de lafigure 3 , après pliage ; - les
figures 5 et 6 sont des vues en plan de l'alvéole de lafigure 2 accueillant deux broches de fiche électrique de diamètres différents ; et - la
figure 7 est une vue en perspective d'un logement d'accueil d'une broche de fiche électrique et de la borne de phase ou de neutre de lafigure 1 .
- the
figure 1 is a rear perspective view of three electrical connection terminals, including a phase terminal and a neutral terminal according to the invention and a ground terminal; - the
figure 2 is a plan view of a cell of the phase terminal or neutral of thefigure 1 ; - the
figure 3 is a plan view of a strip in which are cut the three terminals of thefigure 1 ; - the
figure 4 is a perspective view before the strap of thefigure 3 after folding; - the
Figures 5 and 6 are plan views of the alveolus of thefigure 2 accommodating two electrical plug pins of different diameters; and - the
figure 7 is a perspective view of a housing housing an electrical plug pin and the phase or neutral terminal of thefigure 1 .
Sur la
Cette prise de courant non représentée comporte un socle en matière isolante, fermé à l'avant par un enjoliveur qui présente en renfoncement un puits de réception d'une fiche électrique. Le puits d'insertion de la prise de courant est délimité par une paroi latérale cylindrique et par une paroi de fond. Cette paroi de fond est percée de deux trous de passage de deux broches d'une fiche électrique (non représentée) et d'un trou de passage d'une broche de terre (non représentée) liée à la borne de terre 10 placée dans le socle de la prise de courant. Ainsi, la broche de terre émerge à travers le trou du fond de l'enjoliveur dans le puits de réception de la prise de courant.This socket not shown has a base of insulating material, closed at the front by a hubcap which has a recess well receiving a plug. The insertion well of the socket is delimited by a cylindrical side wall and a bottom wall. This bottom wall is pierced with two holes for the passage of two pins of an electrical plug (not shown) and a through hole of a ground pin (not shown) connected to the
Le socle de la prise de courant comporte intérieurement des compartiments isolés les uns des autres et destinés à recevoir chacun l'une des trois bornes 10, 20, 20' de connexion électrique.The base of the socket has inner compartments insulated from each other and intended to each receive one of the three
Le socle est par ailleurs apte à être logé dans une boîte à encastrer dans une paroi quelconque ou dans un boîtier à rapporter en saillie sur une telle paroi.The base is also adapted to be housed in a box to be embedded in any wall or in a projecting housing projecting on such a wall.
Plus particulièrement, pour encastrer une telle prise de courant, le socle muni de son enjoliveur est monté sur un support d'appareillage (non représenté) en forme de cadre, rapporté sur la face avant d'une boîte d'encastrement logée dans un orifice pratiqué dans la paroi. Le support d'appareillage est recouvert d'une plaque de finition, également en forme de cadre, qui prend appui sur la paroi d'encastrement en fermant l'ouverture avant de la boîte d'encastrement et en bordant l'enjoliveur de la prise de courant.More particularly, to embed such a socket, the base provided with its hubcap is mounted on a device support (not shown) in the form of a frame, attached to the front face of a mounting box housed in a hole practiced in the wall. The equipment support is covered by a finishing plate, also in the form of a frame, which is supported on the recess wall by closing the front opening of the recess box and flanking the hubcap of the socket current.
Comme le montrent les
Ces deux bornes 20, 20' présentant des géométries homologues, elles seront décrites ensemble.These two
Le feuillard métallique 21, 21' de chaque borne 20, 20' comporte une ouverture 22, 22' à l'intérieur de laquelle s'étendent quatre languettes 23, 23', 24, 24' disposées en croix. Ces languettes sont distinctes les unes des autres. Elles sont repliées du côté d'une même face du feuillard métallique 21, 21' pour délimiter entre elles un alvéole 25, 25' de réception d'une broche d'une fiche électrique.The
Plus précisément, par feuillard métallique on entend une bande de matière métallique qui a subi une opération de pliage et/ou une opération de découpe. Un tel feuillard métallique est également connu sous le nom de « barrette plate ».More specifically, metal strip means a strip of metal material which has undergone a folding operation and / or a cutting operation. Such a metal strip is also known as a "flat strip".
Le feuillard métallique 21, 21' se présente sous la forme d'une barrette essentiellement plane en matériau cuivreux (par exemple en laiton) de faible épaisseur, comprise entre 0,3 et 0,6 millimètre, avec une face arrière 27, 27' destinée à être tournée vers le fond du socle de la prise de courant et une face avant 28, 28' opposée. Ce feuillard métallique 21, 21' comporte un bord périphérique extérieur 26, 26' de forme allongée et un bord périphérique intérieur qui délimite ladite ouverture 22, 22' de forme globalement carrée.The
Cette ouverture 22, 22' est située au centre d'une partie de plus grande largeur du feuillard métallique 21, 21'. L'alvéole 25, 25' délimité par les languettes 23, 23', 24, 24' présente un axe A1, A1' qui passe par le centre de l'ouverture 22, 22'.This
Lorsque la borne 20, 20' est mise en place dans la prise de courant, l'axe A1, A1' de son alvéole 25, 25' est confondu avec l'axe du trou correspondant du fond du puits de réception de l'enjoliveur fermant l'avant du socle logeant ladite borne 20, 20'.When the terminal 20, 20 'is placed in the socket, the axis A1, A1' of its
Les quatre languettes 23, 23', 24, 24' s'étendent à partir des quatre coins du bord périphérique intérieur délimitant l'ouverture 22, 22'. Elles sont découpées dans le feuillard métallique 21, 21' de sorte qu'elles forment avec celui-ci une pièce monobloc.The four
Comme le montre la
Comme le montre la
En revanche, les languettes 23, 23', 24, 24' étant repliées vers la face arrière 27, 27' du feuillard métallique 21, 21', leurs bords libres d'extrémité 23A, 24A ne sont pas situés dans le plan de l'ouverture 22, 22', mais plutôt à distance du plan de cette ouverture, du côté de la face arrière 27, 27' du feuillard métallique 21, 21'. La partie repliée de chaque languette 23, 23', 24, 24' est inclinée par rapport à l'axe A1, A1' d'un angle compris entre 1 et 30 degrés, ici sensiblement égal à 10 degrés. Les quatre languettes 23, 23', 24, 24' sont donc coudées vers la face arrière 27, 27' du feuillard métallique 21, 21'.On the other hand, the
Selon une caractéristique particulièrement avantageuse de l'invention, lesdites quatre languettes 23, 23', 24, 24' s'étendent en vis-à-vis par couples de mêmes longueurs. En l'espèce, en projection dans le plan de l'ouverture 22, 22', les languettes 23, 23' d'un premier couple présentent une première longueur I1 tandis que les languettes 24, 24' d'un second couple présentent une seconde longueur I2 strictement inférieure à ladite première longueur I1 (voir
Ces longueurs I1 et I2 sont telles que les parties repliées des languettes 23, 23' du premier couple présentent chacune une distance minimale à l'axe A1, A1' de l'alvéole 25, 25' inférieure à 2 millimètres tandis que les parties repliées des languettes 24, 24' du second couple présentent chacune une distance minimale à l'axe principal A1, A1' de l'alvéole 25, 25' comprise entre 2 et 2,4 millimètres.These lengths I 1 and I 2 are such that the folded portions of the
De cette manière, comme le montrent les
Elle est en particulier adaptée à accueillir des broches de petits diamètres recouvertes, sur une partie de leurs longueurs (11 millimètres), d'un manchon d'isolation électrique. En effet, la longueur I1 est telle que les languettes 23 du premier couple peuvent venir au contact de la broche au-delà du manchon d'isolation électrique, afin d'établir un contact électrique entre la borne 20 et la broche.It is particularly adapted to accommodate pins of small diameters covered, over a portion of their lengths (11 millimeters), an electrical insulation sleeve. Indeed, the length I 1 is such that the
Si le diamètre de la broche 50 engagée dans l'alvéole 25 est faible (4 millimètres), seules les parties repliées des languettes 23 du premier couple prennent appui contre cette broche 50 (voir
Préférentiellement, comme le montrent les
Lors de l'insertion d'une broche 51 de diamètre important dans l'alvéole 25, 25', l'amplitude de déformation élastique de ces languettes 23, 23' est particulièrement grande, comparée à celle des languettes 24, 24' du second couple. Le biseautage des languettes 23, 23' les rend ainsi plus facilement déformables, si bien que l'effort à exercer sur la fiche électrique pour engager ses broches dans les bornes 20, 20' est réduit.When inserting a
Les bords libres d'extrémité des languettes 24, 24' du second couple sont quant à eux incurvés pour être circonscrits à un cercle de diamètre compris entre 4 et 4,8 millimètres. En conséquence, lors de l'insertion d'une broche 51 de diamètre important dans l'alvéole 25, 25', ces languettes 24, 24' s'appliquent sur toute leurs largeurs contre la broche 51 de manière à correctement la maintenir et à assurer une connexion électrique efficace.The free end edges of the
La borne 20, 20' comporte par ailleurs des moyens de fixation au socle de la prise de courant. Tels que représentés sur la
Préférentiellement, comme le montre la
Ici, l'élément 60 vient de formation avec la paroi de fond du socle. Ses logements d'accueil 61 sont des trous cylindriques de révolution autour des axes A1 des alvéoles 25, de diamètre égal, au jeu près, au diamètre des broches de plus grand diamètre que la prise de courant est adaptée à accueillir (ici 4,8 millimètres).Here, the
Ces deux logements d'accueil 61 permettent de guider les deux broches de la fiche électrique lors de l'engagement de cette fiche électrique dans le puits d'insertion de l'enjoliveur de la prise de courant.These two receiving
Ils permettent en outre de maintenir latéralement les deux broches de la fiche électrique engagée dans le puits d'insertion de l'enjoliveur, dans l'axe des alvéoles 25 des deux bornes 20 (et 20') afin d'éviter qu'un effort exercé transversalement sur la fiche électrique n'entraîne une déformation permanente des languettes 23, 24 des deux bornes 20 (et 20').They also make it possible to hold the two pins of the electrical plug engaged in the embellisher insertion well laterally, in the axis of the
On a par ailleurs représenté sur la
La broche de terre est plus particulièrement adaptée à être engagée puis sertie dans l'ouverture d'accueil 12.The ground pin is more particularly adapted to be engaged and then crimped into the
La borne 10 de terre comporte par ailleurs des moyens de fixation au socle. Tels que représentés sur la
Comme le montrent les
Comme le montre la
Ainsi, lorsque les broches d'une fiche électrique sont engagées au travers des alvéoles 25, 25' des deux bornes 20, 20', les languettes 23, 23' de grandes longueurs de chaque borne 20, 20' se déforment de manière symétrique, ce qui permet de rattraper un éventuel défaut d'entr'axe entre les deux broches de la prise de courant, au bénéfice de la souplesse d'utilisation de la prise de courant.Thus, when the pins of an electrical plug are engaged through the
Par ailleurs, grâce à cette symétrie, lorsque les broches d'une fiche électrique raccordée à un élément de poids élevé (tel qu'un transformateur électrique) sont insérées dans la prise de courant, au moins une languette 23, 23' de grande longueur de chaque borne 20, 20' reprend le poids de cet élément, ce qui évite que les feuillards métalliques 21, 21' ne se déforment plastiquement.Moreover, thanks to this symmetry, when the pins of an electrical plug connected to a high weight element (such as an electrical transformer) are inserted into the socket, at least one
Le procédé de fabrication de ces trois bornes 10, 20, 20' comporte deux étapes principales. Il comporte une première étape de découpage à plat dans le feuillard brut 1 des trois feuillards métalliques 11, 21, 21'.The manufacturing process of these three
Cette étape permet de découper, d'une part, les trois feuillards métalliques 11, 21, 21' pour les extraire du feuillard brut 1, et, d'autre part, les bords périphériques des ouvertures 22, 22' pour définir les alvéoles 25, 25'.This step makes it possible to cut, on the one hand, the three
Chaque feuillard métallique 11, 21, 21' est alors découpé suivant un contour donné correspondant à son bord périphérique extérieur 26.Each
Les bords périphériques des ouvertures 22, 22' des feuillards métalliques 21, 21' sont quant à eux découpés de manière que leurs contours restent délimités à l'intérieur du contour du feuillard métallique 21 ,21' et qu'ils définissent lesdites quatre languettes 23, 23', 24, 24'.The peripheral edges of the
Au cours de cette opération de découpage, les quatre languettes 23, 23', 24, 24' de chaque borne 20, 20' sont réalisées dans la matière initiale de l'ouverture 22 pour libérer cette dernière, avec un enlèvement de matière minimal (correspondant au jeu de découpe de l'outil) entre les languettes 23, 23' du premier couple. Elles sont en outre découpées avec un enlèvement de matière minimal entre, d'une part, les languettes 24, 24', et, d'autre part, les tranches des languettes 23, 23'.During this cutting operation, the four
De ce fait, en position dépliée, les bords libres d'extrémité des languettes 23, 23' du premier couple de chaque alvéole 25, 25' sont joints l'une avec l'autre au jeu de découpe près et les bords libres d'extrémité des languettes 24, 24' du second couple de chaque alvéole 25, 25' sont joints aux tranches des languettes 23, 23' du premier couple de cet alvéole, au jeu de découpe près.Therefore, in the unfolded position, the free end edges of the
De cette manière, le volume de déchet est réduit.In this way, the volume of waste is reduced.
Par ailleurs, grâce à cet enlèvement de matière minimal, les languettes 23, 23' du premier couple peuvent, alors qu'elles sont issues de la matière initiale de l'ouverture 22, 22', présenter des longueurs importantes, ce qui leur permet d'établir un contact électrique avec les broches équipées de manchons d'isolation électrique.Moreover, thanks to this minimal material removal, the
Le procédé de fabrication comporte par ailleurs une étape de pliage (également appelée étape de formage) des feuillards métalliques 11, 21, 21'.The manufacturing method also comprises a folding step (also called a forming step) of the metal strips 11, 21, 21 '.
Au cours de cette opération, les feuillards métalliques 11, 21, 21' des trois bornes 10, 20, 20' sont emboutis de manière qu'ils présentent chacun deux parties d'extrémité encadrant une partie centrale qui est pourvue d'une desdites ouvertures 14, 22, 22' et qui s'étend en renfoncement par rapport à ces deux parties d'extrémité. Bien sûr, en variante, on pourra prévoir que les feuillards métalliques ne soient pas emboutis et qu'ils s'étendent dans un plan.During this operation, the metal strips 11, 21, 21 'of the three
Les quatre languettes 23, 23', 24, 24' de chaque ouverture 22, 22' (découpées dans le feuillard brut 1) sont quant à elles pliées en coude pour former des saillies s'élevant sur une même face 27, 27' du feuillard métallique 21, 21' et délimitant entre elles ledit alvéole 25, 25' (
Préférentiellement, ces deux étapes de découpage et de pliage sont réalisées simultanément. En effet, l'architecture particulièrement simple des trois bornes 10, 20, 20' est telle qu'il est possible, à l'aide d'un unique outil de poinçonnage, de découper et plier le feuillard brut 1.Preferably, these two steps of cutting and folding are performed simultaneously. Indeed, the particularly simple architecture of the three
La présente invention n'est nullement limitée aux modes de réalisation décrits et représentés, mais l'homme du métier saura y apporter toute variante conforme à son esprit.The present invention is not limited to the embodiments described and shown, but the skilled person will be able to make any variant within his mind.
Par exemple, on pourra prévoir d'agencer les quatre languettes de chaque borne de connexion électrique de telle manière qu'elles soient adaptées à recevoir une broche électrique de section différente et d'un standard différent, par exemple britannique (« british standard »), américain, etc...For example, it will be possible to arrange the four tabs of each electrical connection terminal such that they are adapted to receive an electrical pin of different section and a different standard, for example British ("British standard") , American, etc ...
Claims (10)
- An electrical connection terminal (20, 20') in the form of a metal sheet (21, 21') including an opening (22, 22') within which four tongues (23, 23', 24, 24') extend in a cross configuration so as to define between them a socket (25, 25') for receiving a pin (50; 51) of an electric plug, the terminal being characterized in that said four tongues (23, 23', 24, 24') are folded towards the same face.of the metal sheet (21, 21') and extend facing one another in pairs, the tongues (23, 23') of a first pair presenting a first length (-1) and the tongues (24, 24') of a second pair presenting a second length (-2) shorter than said first length (-1).
- A terminal (20, 20') according to the preceding claim, wherein the end free edges (23A) of the tongues (23, 23') of the first pair are beveled.
- A terminal (20, 20') according to either preceding claim, wherein, in the unfolded position, the end free edges (23A) of the tongues (23, 23') of the first pair touch each other, ignoring cutting clearance.
- A terminal (20, 20') according to the preceding claim, wherein, in the unfolded position, the end free edges (24A) of the tongues (24, 24') of the second pair touch the side edges of the tongues (23, 23') of the first pair, ignoring cutting clearance.
- A terminal (20, 20') according to any preceding claim, wherein it is formed as a single piece by cutting and folding a metal sheet.
- An electricity outlet comprising a base closed at the front by a trim plate defining a well for receiving an electric plug, the bottom of the well being provided with two through holes for passing pins (50; 51) of the electric plug, the outlet being characterized in that it includes two terminals (20, 20') according to any preceding claim with the sockets (25, 25') thereof being situated in register with said two through holes.
- An electricity outlet according to the preceding claim, wherein the base has two housings (61) for receiving said pins (50; 51), each pin-receiving housing (61) lying on the axis of one of said sockets (25, 25') and presenting an open end facing said socket (25, 25').
- A method of fabricating a terminal (20, 20') according to any one of claims 1 to 5, the method comprising the steps consisting in:· cutting sheet stock (1) while flat around an outer peripheral outline (26, 26') in order to form said metal sheet (21, 21');· cutting said opening (22, 22') in the metal sheet (21, 21') so that its peripheral edge is defined inside said outer peripheral outline (26, 26') and so that it defines said four tongues (23, 23', 24, 24'); and· folding said four tongues (23, 23', 24, 24') towards the same face of the metal sheet (21, 21').
- A fabrication method according to the preceding claim, wherein the steps of cutting said opening (22, 22') and of folding said four tongues (23, 23', 24, 24') are performed simultaneously, using a single punch tool.
- A fabrication method according to either one of the two preceding claims, wherein the steps of cutting the sheet stock (1) and of cutting out said opening (22, 22') are performed simultaneously.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0800117A FR2926167A1 (en) | 2008-01-09 | 2008-01-09 | CONNECTION TERMINAL HAVING AN ELECTRICAL PLUG SPINDLE RECEIVING ALVEOL, A POWER PLUG COMPRISING SUCH A TERMINAL, AND A METHOD OF MANUFACTURING SUCH A TERMINAL. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2079133A1 EP2079133A1 (en) | 2009-07-15 |
EP2079133B1 true EP2079133B1 (en) | 2010-07-28 |
Family
ID=39832033
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08291170A Not-in-force EP2079133B1 (en) | 2008-01-09 | 2008-12-11 | Connection terminal equipped with a socket for receiving a pin of an eletric plug, power outlet comprising such a terminal and method of manufacturing such a terminal |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2079133B1 (en) |
CN (1) | CN101483288B (en) |
FR (1) | FR2926167A1 (en) |
RU (1) | RU2479081C2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012201217B4 (en) * | 2012-01-27 | 2021-09-30 | Bühler Motor GmbH | Actuator |
DE102015220704B4 (en) | 2015-10-22 | 2022-07-28 | Te Connectivity Germany Gmbh | Contact arrangement for a contactor and electrical arrangement with a contactor |
CN110416786B (en) * | 2019-07-29 | 2020-10-30 | 江苏雷利电机股份有限公司 | Conductive terminal, coupler and motor comprising same and assembly method of coupler |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3825884A (en) * | 1973-01-22 | 1974-07-23 | Rapid Sa | Electrical connection clip |
FR2538174B1 (en) * | 1982-12-16 | 1985-06-28 | Electricfil | CONNECTOR END FOR ELECTRIC CABLE |
SU1642539A1 (en) * | 1989-04-11 | 1991-04-15 | Предприятие П/Я А-7672 | Contact device |
DE19735409C2 (en) * | 1997-08-14 | 2000-04-06 | Kathrein Werke Kg | Connecting device |
US6033245A (en) * | 1997-12-05 | 2000-03-07 | Simplex Time Recorder Co. | Self-aligning electrical connector |
DE19950757A1 (en) * | 1999-10-21 | 2001-04-26 | Bosch Gmbh Robert | Electrical and mechanical connector between flexible circuit board and second circuit board, has support region of contact pin clamping part which presses against track of circuit board |
DE10306618B4 (en) * | 2003-02-18 | 2010-11-04 | Tyco Electronics Amp Gmbh | Planar contact structure with contact tongues for a variable plug-in position |
-
2008
- 2008-01-09 FR FR0800117A patent/FR2926167A1/en active Pending
- 2008-12-11 EP EP08291170A patent/EP2079133B1/en not_active Not-in-force
- 2008-12-26 RU RU2008151969/07A patent/RU2479081C2/en not_active IP Right Cessation
-
2009
- 2009-01-06 CN CN2009100018112A patent/CN101483288B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN101483288A (en) | 2009-07-15 |
CN101483288B (en) | 2011-04-27 |
RU2479081C2 (en) | 2013-04-10 |
RU2008151969A (en) | 2010-07-10 |
FR2926167A1 (en) | 2009-07-10 |
EP2079133A1 (en) | 2009-07-15 |
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