EP2166619B1 - Automatisch freilegende elektrische Anschlussvorrichtung - Google Patents
Automatisch freilegende elektrische Anschlussvorrichtung Download PDFInfo
- Publication number
- EP2166619B1 EP2166619B1 EP09170479A EP09170479A EP2166619B1 EP 2166619 B1 EP2166619 B1 EP 2166619B1 EP 09170479 A EP09170479 A EP 09170479A EP 09170479 A EP09170479 A EP 09170479A EP 2166619 B1 EP2166619 B1 EP 2166619B1
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- EP
- European Patent Office
- Prior art keywords
- longitudinal
- stripping
- self
- electrical connection
- connection device
- 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
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Classifications
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- 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
- H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
- H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
- H01R4/242—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members being plates having a single slot
- H01R4/2437—Curved plates
- H01R4/2441—Curved plates tube-shaped
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- 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
- H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
- H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
- H01R4/2445—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives
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- 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
- H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
- H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
- H01R4/242—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members being plates having a single slot
- H01R4/2425—Flat plates, e.g. multi-layered flat plates
- H01R4/2429—Flat plates, e.g. multi-layered flat plates mounted in an insulating base
- H01R4/2433—Flat plates, e.g. multi-layered flat plates mounted in an insulating base one part of the base being movable to push the cable into the slot
Definitions
- the present invention relates to self-stripping electrical and mechanical connection devices for connecting insulated electrical conductors to electrical equipment.
- connection devices Such electrical and mechanical connection devices, described in particular in the documents, are already known.
- These devices comprise a connection loop with elastically deformable conductive body having two opposing flanges progressively approaching each other to two longitudinal lips separated from each other by a longitudinal connecting slot which develops on the along a longitudinal axis.
- the longitudinal slot connection has at least, at the end, a mouthpiece insertion and stripping flared V and bordered by cutting edges.
- the V-shaped opening and stripping mouthpiece with sharp edges is set back from the end of the tubular body.
- the longitudinal lips each form a free longitudinal edge of one of the flanges. From the longitudinal connecting slot, the cutting edges of the mouth zone move away from each other and away from the longitudinal axis of the longitudinal connecting slot on the same side as the flanges.
- connection devices By the elasticity of the tubular body, these known connection devices allow some adaptation to different diameters of conductors to be connected.
- the document FR 2 782 194 at proposed to add, around the conductive tubular body, an external metal reinforcement made of an elastic material and which exerts on the conductive part, an elastic return force in the direction of a ruzement of the lips of the stripping slot and detention.
- a disadvantage is that it complicates the device, by the use of two different materials, one to achieve the conductive tubular body with good electrical conductivity, and the other to achieve the outer reinforcement with greater stiffness.
- the use of different materials runs the risk of galvanic corrosion when the connection device is intended to be used in conductive atmospheres.
- document FR 2 618 611 A a self-stripping connection device according to the preamble of claim 1.
- the cutting edges essentially develop in two inner flaps connected to the side flanges, and they move away from each other in approaching first the longitudinal axis of the slot and developing in the same direction as the flanges.
- the inner shutters introduce a flexibility difficult to control, their connection to the flanges of the body being provided by portions of reduced and complex section.
- this structure leads to an excessive transverse size of the device.
- the problem proposed by the present invention is thus to design a new structure of electrical connection device self-stripping versatile which, for a wide range of conductor diameters to be connected, both ensures good electrical conduction, a strong electrical contact pressure, effective stripping of the conductor, no risk of galvanic corrosion, and a lower production cost thanks to a simplified structure.
- the invention proposes a self-stripping electrical connection device for connecting at least one conductive core electrical conductor surrounded by an insulating sheath, the device comprising a connection loop to elastically deformable conductive body having two opposing flanges, connected to each other by a connecting bridge, and approaching each other to two respective longitudinal lips separated from each other by a longitudinal connecting slot developing along a longitudinal axis, the body having at least one opening and stripping mouth flared in V and bordered by sharp edges; the longitudinal lips are each connected to a lateral flange developing laterally from the longitudinal connecting slot to the opposite of the respective flanges; in the region of the flaring insertion and stripping mouth, the longitudinal lips each comprise a respective longitudinal extension having a respective lateral flange section and having one of the respective cutting edges; each sharp edge develops entirely in the respective lateral rim; the sharp edges of the flared inlet and stripping mouth zone both move away from each other outwards and away from the longitudinal axis away from the device
- the presence of the lateral flanges increases the rigidity of the structure, and allows to transfer in the end stripping zone the holding forces provided by the entire length of the elastically deformable conductive body.
- the presence of the lateral flanges gives sufficient rigidity to the longitudinal lips to allow for rigid longitudinal extensions and inversion of the orientation of the V mouth, which promotes the stripping and avoids aggression of the driver's core to be connected.
- the realization of the cutting edges in the lateral flanges ensures a direct and rigid connection of the cutting edges with the main part of the body, making it possible to control, for a wide range of diameters of conductors, the clamping forces and the displacements of the cutting edges during the commitment of drivers to connect.
- the connecting device makes it possible to connect both, without modification of the device, either an end of a conductor, or an intermediate portion of a conductor which can then protrude radially from the side and other body.
- the lateral flanges may each have a cylindrical portion shape with a curvilinear transverse profile or an arc of a circle. Such a shape is easier to achieve and gives both good stiffness results and a more even shape of the cutting edges, for efficient and non-aggressive stripping for the core of the wire.
- the cutting edges may comprise cutting edge sections locally folded inwards to retain the electrical conductor.
- the longitudinal connecting slot may have a width which decreases progressively in the direction of the flaring inlet and stripping mouth zone.
- the connecting device is thus adapted to retain a wider range of diameters of electrical conductors.
- the flanges may each comprise a diagonal fold line from which the flange is bent inwards.
- the retaining means substantially increase the stiffness of the body, opposing the spacing of the longitudinal lips, without requiring the use of a more rigid material.
- the combination of the retaining means and the lateral flanges makes it possible to transmit to the cutting edges the retaining force exerted by the retaining means.
- the retaining means may comprise a transverse tab snap on an opposite recess, performing a pivoting attachment of transverse axis. This avoids disturbing the elastic movements of the mouth and stripping area by any rigidity of the retaining means.
- the connecting device may advantageously further comprise an elastic reinforcement, reported, which elastically biases the longitudinal lips towards one another.
- the elastic reinforcement may advantageously be a longitudinal slit structure, with longitudinal protuberances coming to tighten the longitudinal extensions of the body towards each other.
- the elastic reinforcement can be attached longitudinally sliding relative to the connecting loop body, so that its longitudinal position is adjustable to adapt the clamping force of the longitudinal lips in the area of flared mouth introduction and stripping.
- the elastic reinforcement can be engaged inside the body, with its two longitudinal protuberances protruding outside the body to be applied on the respective outer faces of the longitudinal extensions of the body.
- This arrangement promotes the mechanical coupling between the elastic reinforcement and the body, and allows to give the assembly a preload favoring the tightening of the longitudinal lips.
- the size of the device is smaller than with an external elastic reinforcement.
- a self-stripping electrical connection device comprises a connection loop 100 with a single-piece body 1, made of a good electrically conducting metal such as a copper alloy, obtained by cutting and folding a metal blank.
- the body 1 generally comprises two opposite flanges 2 and 3, connected to each other by a connecting bridge 4, and progressively approaching one another to two respective longitudinal lips 6 and 7 close to each other and separated from each other by a longitudinal slot connection 5 which develops along a longitudinal axis II.
- the longitudinal connecting slot 5 comprises, at one of its longitudinal ends, an insertion and stripping mouth 8, of flared shape in an open V towards the outside, as can be seen better on the figure 5 and bordered by cutting edges 9 and 10 directly following the longitudinal lips 6 and 7 respectively.
- the longitudinal lips 6 and 7 are each connected to a respective lateral rim 6a or 7a which develops from the longitudinal connecting slot 5 opposite the respective flanges 2 and 3. From the longitudinal connecting slot 5, the lateral flanges 6a and 7a grow apart from each other.
- the lateral flanges 6a and 7a each have a cylindrical portion shape with a longitudinal axis and a transverse profile in an arc of a circle: see in particular the figure 3 .
- the lips 6 and 7 thus form the areas of the flanges closest to each other, while being able to deviate from one another for the passage of an electric conductor engaged in force against the elastic restoring force produced by the body 1.
- the longitudinal lips 6 and 7 each comprise a respective longitudinal extension 6b or 7b, extending substantially parallel to the direction of the longitudinal axis I-I.
- Each of the respective longitudinal extensions 6b and 7b comprises a section of the respective lateral flange 6a or 7a, and has one of the respective two cutting edges 9 or 10 which develops in the respective lateral flange section 6a or 7a.
- the cutting edges 9 and 10 are thus directly in continuity with the longitudinal lips 6 and 7.
- the areas of the lips 6 and 7 of the body 1, as well as their extensions 6b and 7b, form two extremely rigid longitudinal beams, capable of transmitting to the cutting edges 9 and 10 the clamping forces elastic coming from the body 1.
- the connecting loop body 1 is longitudinally set back from the flaring insertion and stripping mouth 8 forming a recess opposite to the longitudinal connecting slot 5 in the flared inlet mouth zone and stripping 8.
- the longitudinal extensions 6b and 7b may advantageously be limited by inner edges 9a and 10a locally folded inwards to retain the electrical conductor with a harpoon effect.
- the retaining means 11 may comprise a transverse tab 11a ( figure 17 ) snap on a recess 11 b opposite to achieve a pivoting attachment transverse axis II ( figure 1 ).
- the longitudinal slot 5 connection itself has a V-shaped with a width that decreases progressively towards the area of flared mouth of introduction and stripping 8.
- the lateral flanges 2 and 3 of the body 1 are folded inwards along a diagonal such as the fold line 2a for the lateral flange 2, and the line of fold 3a with respect to the lateral flange 3.
- the diagonal is oriented so as to deviate from the longitudinal connecting slot 5 in the area of the insertion and stripping mouth 8.
- the figures show a fold line 2a or 3a according to which the definitive folding angle ⁇ ( figure 3 ) is about 15 °. This value can be adapted according to the dimensions of the connecting device.
- the retaining means 11 allow to arm the body 1, that is to say to put it in preload to ensure a satisfactory relative clamping force of the longitudinal lips 6 and 7 towards each other regardless of the diameter of the conductors that the is engaged between the longitudinal lips 6 and 7 for their connection.
- FIGS. 13 to 18 illustrate a second embodiment of a self-stripping electrical connection device according to the invention.
- connection loop 101 is no longer one-piece, but comprises two parts, namely an elastic body 1 such as that illustrated above on the Figures 1 to 5 , and an elastic reinforcement 20, which is reported, and which elastically biases the longitudinal lips 6 and 7 of the body 1 towards each other.
- the elastic reinforcement 20 is also a split structure, with a longitudinal slot 21, two lateral flanges 22 and 23 connected to each other by a connecting bridge 24.
- the elastic reinforcement 20 has longitudinal protrusions 25 and 26 respectively extending the side flanges 22 and 23, with respective return tabs 25a and 26a.
- the elastic reinforcement 20 has a diagonal fold line 22a on the lateral flange 22, and a diagonal fold line 23a on the side flange 23.
- the elastic reinforcement 20 can be armed and prestressed, in the same manner as the body 1.
- the elastic reinforcement 20 shown on the Figures 6 to 12 is engaged inside the body 1. Its two longitudinal protuberances 25 and 26 extend outside the body 1 in the region of the longitudinal extensions 6b and 7b, and are applied on the respective outer faces of the longitudinal extensions 6b and 7b of the body 1.
- a major advantage of the internal position of the elastic reinforcement 20 is to ensure the additional elastic restoring force of the body 1 without increasing the overall size of the connecting device.
- the interest is thus to reduce the transverse bulk (distance between the flanges 2 and 3), which determines the pitch P between a series of parallel connectors (see figure 34 ).
- the elastic reinforcement 20 also makes it possible to reinforce the rigidity of the longitudinal lips 6 and 7, in order to better add the spring effects of the body 1 and the elastic reinforcement 20, and to avoid the twisting of the longitudinal extensions 6b and 7b.
- connection loop 100 When in use, as schematically seen on the figure 19 a connection loop 100 (or 101) as described above receives an electrical conductor 30 oriented transversely and pushed longitudinally in the direction of the axis 1-1 as illustrated by the arrow 31.
- the electrical conductor 30 comprises a metal core 30a surrounded by an insulating sheath 30b.
- the cutting edges 9 and 10 bite into the insulating sheath 30b and come into contact with the core 30a.
- the cutting edges 9 and 10 in the area of the flaring insertion and stripping mouth 8, go both away from each other outwards and away from each other.
- the longitudinal axis 1-1 opposite the flanges 2 and 3 the cutting edges 9 and 10 have an orientation which promotes the stripping and mechanical retention of the conductor 30.
- the stripping is also favored by the helical shape cutting edges 9 and 10, which shape results from the cylindrical structure of the lateral flanges 6a and 7a.
- the conductor 30 can be engaged to fix its end to the electrical connection loop 100 as shown in FIG. figure 19 or a conductor 130 may be engaged in an intermediate portion of conductor as shown on the same figure 19 , in relation with another electrical connection loop 100a of the same type.
- each connecting loop body comprises a respective axial assembly portion 102 or 102a, developing opposite the insertion and stripping mouth 8 or 8a, and shaped to provide a male-female axial connection.
- female with the corresponding axial assembly portion of a second connecting loop body, the assembly thus allowing the connection of two electrical conductors 30 and 130.
- FIGS 20 and 21 illustrate in partial section a complete structure of self-stripping electrical connection device, with the two connection loops 100 and 100a which are engaged in an insulating housing 40 having at least one passage 41 (two passages 41 and 42 in the mode). illustrated embodiment) for the engagement of an electrical conductor to be connected.
- the casing 40 is associated, for each passage 41 or 42 and each connection loop 100 and 100a, with a push-button 43 or 44 that is displaceable longitudinally and able to urge the respective conductor engaged in the respective passage 41 or 42 to engage it in the longitudinal slot connection 5 or 5a of the connecting loop 100 or 100a by the flaring insertion and stripping mouth 8 or 8a.
- the figure 20 illustrates the device before the introduction of the electrical conductors 30 and 130, while the figure 21 illustrates the same device after the introduction of the electrical conductors 30 and 130.
- the connecting bridge 4 which connects the two opposite flanges 2 and 3 to each other is located between the respective longitudinal edges 2b and 3b which are opposed to the longitudinal connecting slot 5, as we see it on the figure 1 .
- the connecting bridge 4 can occupy the entire length of the body 1 of the loop 100, to give a relatively large stiffness.
- the retaining means 11 are arranged in the longitudinal slot region 5 which is away from the flaring insertion and stripping mouth 8.
- the connecting bridge 4 which connects the flanges 2 and 3 may be located on the respective transverse edges 2c, 3c which are opposed to the flared mouth of introduction and stripping 8, as seen for example in Figures 22 to 26 .
- the retaining means 11a are arranged in opposition to the longitudinal connecting slot 5, or between the respective longitudinal edges 2b and 3b of the flanges 2 and 3, or between the respective transverse edges 2d and 3d which are on the side the flared mouth introduction and stripping, in the vicinity of the longitudinal edges 2b and 3b.
- This embodiment of Figures 22 to 26 further increases the freedom of passage of a conductor which, after insertion into the longitudinal connecting slot 5, can escape the body 1 as long as it does not collide with the retaining means 11a.
- FIGS 27 , 28 and 29 illustrate another embodiment in which the connecting bridge 4 is also located between the respective transverse edges opposite the flaring insertion and stripping mouth 8, as in the embodiment of the invention.
- Figures 22 to 26 with the addition of an added elastic reinforcement 20 engaged inside the body 1.
- the elastic reinforcement 20 is better visible on the figure 27 , and comprises means similar to those of the elastic reinforcement 20 previously described in connection with the Figures 6 to 12 .
- the connecting bridge 4 is bent in a semicircle;
- a connecting bridge 4 having a transverse U-profile with two corner bends such as the connecting bridge 4 illustrated in the embodiments of FIGS. Figures 22 to 33 because such a structure substantially increases the elastic clamping force of the longitudinal lips.
- FIGS 30 and 31 illustrate in partial section a complete structure of self-stripping electrical connection device, with a connecting loop 100 which is engaged in an insulating housing 40 having a passage 41 for the engagement of an electrical conductor to be connected.
- the casing 40 is associated with a plunger 43 that is displaceable longitudinally and able to push the respective conductor to engage it in the longitudinal connecting slot 5 of the connection loop 100.
- the pusher 43 has a second function of adjusting the spacing of the longitudinal lips on either side of the longitudinal connecting slot 5 as a function of the diameter of the conductor engaged in the passage 41.
- the pusher 43 is shaped to spread more or less the longitudinal slot connection 5 according to the diameter of the conductor to be connected.
- the pusher 43 has a medial wall 43a which engages inside the connection loop. 100, and which has lateral bosses, such as the boss 43b, adapted to bear on the longitudinal lips on either side of the longitudinal connecting slot 5. Due to the V shape of the longitudinal connecting slot 5, as illustrated on the figures 17 and 26 it will be understood that the longitudinal movement of the pusher 43 causes the longitudinal lips of the connecting loop 100 to move apart on either side of the longitudinal connecting slot 5.
- the pusher 43 is in the initial position, or position allowing the engagement of a large diameter conductor, the diameter being up to the diameter of the passage 41.
- the bosses 43b are then engaged in the longitudinal connecting slot 5 in the vicinity of the mouth 8, producing a large separation of the longitudinal lips on either side of the longitudinal connecting slot 5. In this way, the longitudinal lips can penetrate the insulator of the driver with only a weak force that he must be applied to the pusher 43.
- This embodiment thus makes it possible to adapt the spacing of the lips as a function of the diameter of the conductor, to reduce the force of penetration of the cutting edges into the insulating sheath of the conductor, and to avoid biting into the conductor itself.
- the central wall 43a may be devoid of bosses but may cooperate with bosses or ribs provided on the body 1, to fulfill the same function of adjusting the spacing of the lips.
- the embodiment of the figure 32 uses the same elements as the embodiment of the figure 1 with a different body shape 1.
- the body 1 has a height H1 which varies according to the position along the axis longitudinal II, the body 1 having a lower height in the vicinity of the retaining means 11 and having a greater height in the vicinity of the mouth 8.
- the figure 33 resumes the same principle as the figure 32 , with a device having in addition an elastic reinforcement 20 reported in the body 1.
- connection loops 110, 111 and 112 such as those of Figures 20 and 21 are associated in the same housing 41, allowing the connection of three pairs of conductors.
- the double connector 110 allows the connection of a large diameter conductor 230 and a small diameter conductor 330 without this requiring a structural change of the corresponding connection loops.
- the small transverse dimension of the connection loops according to the invention makes it possible to produce such a connector with a small transverse bulk, allowing a connection pitch P of small value, compatible with the space saving requirements of the connectors.
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- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Description
La présente invention concerne des dispositifs de raccordement électrique et mécanique auto-dénudants permettant de raccorder des conducteurs électriques à gaine isolante à un appareillage électrique.The present invention relates to self-stripping electrical and mechanical connection devices for connecting insulated electrical conductors to electrical equipment.
La fonction de tels dispositifs de raccordement électrique et mécanique est de permettre une connexion électrique et une fixation mécanique de conducteurs électriques à gaine isolante par simple poussée du conducteur électrique, et sans dénudage préalable de ce conducteur électrique.The function of such electrical and mechanical connection devices is to allow electrical connection and mechanical fastening of electrical conductors with insulating sheath by simply pushing the electrical conductor, and without prior stripping of this electrical conductor.
On connaît déjà de tels dispositifs de raccordement électrique et mécanique, décrits notamment dans les documents
Dans ces dispositifs de raccordement connus, l'embouchure d'introduction et de dénudage évasée en V à arêtes tranchantes est en retrait de l'extrémité du corps tubulaire. Les lèvres longitudinales forment chacune un bord longitudinal libre de l'un des flasques. Depuis la fente longitudinale de raccordement, les arêtes tranchantes de la zone d'embouchure vont en s'écartant l'une de l'autre et en s'écartant de l'axe longitudinal de la fente longitudinale de raccordement selon le même côté que les flasques.In these known connection devices, the V-shaped opening and stripping mouthpiece with sharp edges is set back from the end of the tubular body. The longitudinal lips each form a free longitudinal edge of one of the flanges. From the longitudinal connecting slot, the cutting edges of the mouth zone move away from each other and away from the longitudinal axis of the longitudinal connecting slot on the same side as the flanges.
Par l'élasticité du corps tubulaire, ces dispositifs de raccordement connus permettent une certaine adaptation à des diamètres différents de conducteurs à raccorder.By the elasticity of the tubular body, these known connection devices allow some adaptation to different diameters of conductors to be connected.
Mais une difficulté est d'assurer un bon contact électrique, ce qui nécessite à la fois l'utilisation d'un matériau bon conducteur de l'électricité pour réaliser le corps, et l'utilisation de moyens procurant une pression de contact suffisante. Ces deux exigences sont contradictoires, par le fait que les matériaux bons conducteurs de l'électricité n'ont en principe pas de bonnes propriétés mécaniques garantissant une pression de contact suffisante assurée par le corps tubulaire lui-même. Il faudrait utiliser un matériau qui soit à la fois bon conducteur et suffisamment raide, et le compromis est difficile à atteindre.But a difficulty is to ensure good electrical contact, which requires both the use of a good conductor of electricity to achieve the body, and the use of means providing a sufficient contact pressure. These two requirements are contradictory, in that the good electrically conductive materials do not in principle have good mechanical properties guaranteeing a sufficient contact pressure provided by the tubular body itself. It would be necessary to use a material that is both good conductor and sufficiently stiff, and the compromise is difficult to achieve.
Pour augmenter la raideur du ressort formé par le corps tubulaire, et permettre ainsi une plus grande pression de contact, le document
On connaît par ailleurs, du document
Il en résulte que les volets intérieurs introduisent une flexibilité difficilement contrôlable, leur raccordement aux flasques du corps étant assuré par des portions à section réduite et complexe. En outre, cette structure conduit à un encombrement transversal excessif du dispositif.As a result, the inner shutters introduce a flexibility difficult to control, their connection to the flanges of the body being provided by portions of reduced and complex section. In addition, this structure leads to an excessive transverse size of the device.
Le problème proposé par la présente invention est ainsi de concevoir une nouvelle structure de dispositif de raccordement électrique auto-dénudant polyvalent qui, pour une large gamme de diamètres de conducteurs à raccorder, à la fois assure une bonne conduction électrique, un contact électrique à forte pression, un dénudage efficace du conducteur, une absence de risque de corrosion galvanique, et un plus faible coût de production grâce à une structure simplifiée.The problem proposed by the present invention is thus to design a new structure of electrical connection device self-stripping versatile which, for a wide range of conductor diameters to be connected, both ensures good electrical conduction, a strong electrical contact pressure, effective stripping of the conductor, no risk of galvanic corrosion, and a lower production cost thanks to a simplified structure.
Pour atteindre ces buts ainsi que d'autres, l'invention propose un dispositif de raccordement électrique auto-dénudant pour le raccordement d'au moins un conducteur électrique à âme conductrice entourée d'une gaine isolante, le dispositif comprenant une boucle de raccordement à corps conducteur élastiquement déformable ayant deux flasques opposés, reliés l'un à l'autre par un pont de liaison, et se rapprochant l'un de l'autre jusqu'à deux lèvres longitudinales respectives séparées l'une de l'autre par une fente longitudinale de raccordement se développant le long d'un axe longitudinal, le corps ayant au moins une embouchure d'introduction et de dénudage évasée en V et bordée par des arêtes tranchantes ; les lèvres longitudinales se raccordent chacune à un rebord latéral se développant latéralement depuis la fente longitudinale de raccordement à l'opposé des flasques respectifs ; dans la zone d'embouchure évasée d'introduction et de dénudage, les lèvres longitudinales comportent chacune un prolongement longitudinal respectif ayant un tronçon du rebord latéral respectif et ayant l'une des arêtes tranchantes respective ; chaque arête tranchante se développe entièrement dans le rebord latéral respectif ; les arêtes tranchantes de la zone d'embouchure évasée d'introduction et de dénudage vont à la fois en s'écartant l'une de l'autre vers l'extérieur et en s'écartant depuis l'axe longitudinal à l'opposé des flasques.To achieve these and other aims, the invention proposes a self-stripping electrical connection device for connecting at least one conductive core electrical conductor surrounded by an insulating sheath, the device comprising a connection loop to elastically deformable conductive body having two opposing flanges, connected to each other by a connecting bridge, and approaching each other to two respective longitudinal lips separated from each other by a longitudinal connecting slot developing along a longitudinal axis, the body having at least one opening and stripping mouth flared in V and bordered by sharp edges; the longitudinal lips are each connected to a lateral flange developing laterally from the longitudinal connecting slot to the opposite of the respective flanges; in the region of the flaring insertion and stripping mouth, the longitudinal lips each comprise a respective longitudinal extension having a respective lateral flange section and having one of the respective cutting edges; each sharp edge develops entirely in the respective lateral rim; the sharp edges of the flared inlet and stripping mouth zone both move away from each other outwards and away from the longitudinal axis away from the flanges.
La présence des rebords latéraux augmente la rigidité de la structure, et permet de reporter dans la zone de dénudage d'extrémité les efforts de tenue assurés par toute la longueur du corps conducteur élastiquement déformable. En effet, la présence des rebords latéraux donne une rigidité suffisante aux lèvres longitudinales pour permettre de réaliser des prolongements longitudinaux rigides et une inversion de l'orientation de l'embouchure en V, ce qui favorise le dénudage et évite l'agression de l'âme du conducteur à raccorder. Et la réalisation des arêtes tranchantes dans les rebords latéraux assure une liaison directe et rigide des arêtes tranchantes avec la partie principale du corps, permettant de maîtriser, pour une large gamme de diamètres de conducteurs, les efforts de serrage et les déplacements des arêtes tranchantes lors de l'engagement des conducteurs à raccorder.The presence of the lateral flanges increases the rigidity of the structure, and allows to transfer in the end stripping zone the holding forces provided by the entire length of the elastically deformable conductive body. Indeed, the presence of the lateral flanges gives sufficient rigidity to the longitudinal lips to allow for rigid longitudinal extensions and inversion of the orientation of the V mouth, which promotes the stripping and avoids aggression of the driver's core to be connected. And the realization of the cutting edges in the lateral flanges ensures a direct and rigid connection of the cutting edges with the main part of the body, making it possible to control, for a wide range of diameters of conductors, the clamping forces and the displacements of the cutting edges during the commitment of drivers to connect.
Grâce à la présence des prolongements longitudinaux, le dispositif de raccordement permet de raccorder à la fois, sans modification du dispositif, soit une extrémité d'un conducteur, soit une partie intermédiaire d'un conducteur qui peut alors dépasser radialement de part et d'autre du corps.Thanks to the presence of the longitudinal extensions, the connecting device makes it possible to connect both, without modification of the device, either an end of a conductor, or an intermediate portion of a conductor which can then protrude radially from the side and other body.
Selon un mode de réalisation avantageux, les rebords latéraux peuvent avoir chacun une forme en portion de cylindre à profil transversal curviligne ou en arc de cercle. Une telle forme est plus facile à réaliser et donne à la fois de bons résultats de rigidité et une forme plus régulière des arêtes tranchantes, pour un dénudage efficace et non agressif pour l'âme du fil.According to an advantageous embodiment, the lateral flanges may each have a cylindrical portion shape with a curvilinear transverse profile or an arc of a circle. Such a shape is easier to achieve and gives both good stiffness results and a more even shape of the cutting edges, for efficient and non-aggressive stripping for the core of the wire.
Selon un mode de réalisation avantageux, les arêtes tranchantes peuvent comporter des tronçons d'arête tranchante localement repliés vers l'intérieur pour retenir le conducteur électrique.According to an advantageous embodiment, the cutting edges may comprise cutting edge sections locally folded inwards to retain the electrical conductor.
De préférence, en l'absence de contrainte extérieure exercée sur le corps de boucle de raccordement, la fente longitudinale de raccordement peut présenter une largeur qui va en diminuant progressivement en direction de la zone d'embouchure évasée d'introduction et de dénudage. De la sorte, on bénéficie d'une précontrainte du corps, pour augmenter l'effet de retenue du conducteur dans le dispositif de raccordement. Le dispositif de raccordement est ainsi adapté pour retenir une gamme plus étendue de diamètres de conducteurs électriques.Preferably, in the absence of external stress exerted on the connecting loop body, the longitudinal connecting slot may have a width which decreases progressively in the direction of the flaring inlet and stripping mouth zone. In this way, one benefits from a prestressing of the body, to increase the effect of restraint of the driver in the connecting device. The connecting device is thus adapted to retain a wider range of diameters of electrical conductors.
Pour cela, les flasques peuvent comporter chacun une ligne de pliure en diagonale à partir de laquelle le flasque est plié vers l'intérieur.For this, the flanges may each comprise a diagonal fold line from which the flange is bent inwards.
Selon un premier mode de réalisation du corps :
- le pont de liaison relie les flasques selon leurs bords longitudinaux respectifs opposés à la fente longitudinale de raccordement,
- dans une zone distale de fente longitudinale de raccordement à l'écart de l'embouchure évasée d'introduction et de dénudage, les lèvres longitudinales du corps sont retenues l'une vers l'autre par des moyens de retenue s'opposant à leur écartement relatif.
- the connecting bridge connects the flanges according to their respective longitudinal edges opposite to the longitudinal slot of connection,
- in a distal zone with a longitudinal slot for connection away from the flaring insertion and stripping mouth, the longitudinal lips of the body are retained towards one another by retaining means opposing their spacing relative.
De la sorte, les moyens de retenue augmentent sensiblement la raideur du corps, s'opposant à l'écartement des lèvres longitudinales, sans nécessiter le recours à un matériau plus rigide. La combinaison des moyens de retenue et des rebords latéraux permet de transmettre aux arêtes tranchantes l'effort de retenue exercé par les moyens de retenue.In this way, the retaining means substantially increase the stiffness of the body, opposing the spacing of the longitudinal lips, without requiring the use of a more rigid material. The combination of the retaining means and the lateral flanges makes it possible to transmit to the cutting edges the retaining force exerted by the retaining means.
Selon une réalisation pratique, les moyens de retenue peuvent comporter une patte transversale venant s'encliqueter sur un décrochement opposé, réalisant un accrochage pivotant d'axe transversal. On évite ainsi de perturber les mouvements élastiques de la zone d'embouchure et de dénudage par une quelconque rigidité des moyens de retenue.According to a practical embodiment, the retaining means may comprise a transverse tab snap on an opposite recess, performing a pivoting attachment of transverse axis. This avoids disturbing the elastic movements of the mouth and stripping area by any rigidity of the retaining means.
Selon un second mode de réalisation du corps, on prévoit que :
- le pont de liaison relie les flasques selon leurs bords transversaux respectifs opposés à l'embouchure évasée d'introduction et de dénudage,
- selon une portion opposée à la fente longitudinale de raccordement, les flasques sont retenus l'un vers l'autre par des moyens de retenue s'opposant à leur écartement relatif.
- the connecting bridge connects the flanges according to their respective transverse edges opposite the flaring inlet and stripping mouth,
- in a portion opposite to the longitudinal slot connection, the flanges are retained towards each other by retaining means opposing their relative spacing.
Dans tous les modes de réalisation précédents, le dispositif de raccordement peut avantageusement comporter en outre un renfort élastique, rapporté, qui sollicite élastiquement les lèvres longitudinales l'une vers l'autre.In all the previous embodiments, the connecting device may advantageously further comprise an elastic reinforcement, reported, which elastically biases the longitudinal lips towards one another.
Le renfort élastique peut avantageusement être une structure à fente longitudinale, avec des excroissances longitudinales venant serrer l'un vers l'autre les prolongements longitudinaux du corps.The elastic reinforcement may advantageously be a longitudinal slit structure, with longitudinal protuberances coming to tighten the longitudinal extensions of the body towards each other.
Selon une possibilité, le renfort élastique peut être rapporté coulissant longitudinalement par rapport au corps de boucle de raccordement, de sorte que sa position longitudinale est réglable pour adapter la force de serrage des lèvres longitudinales dans la zone d'embouchure évasée d'introduction et de dénudage.According to one possibility, the elastic reinforcement can be attached longitudinally sliding relative to the connecting loop body, so that its longitudinal position is adjustable to adapt the clamping force of the longitudinal lips in the area of flared mouth introduction and stripping.
De préférence, le renfort élastique peut être engagé à l'intérieur du corps, avec ses deux excroissances longitudinales sortant à l'extérieur du corps pour s'appliquer sur les faces externes respectives des prolongements longitudinaux du corps. Cette disposition favorise le couplage mécanique entre le renfort élastique et le corps, et permet de donner à l'ensemble une précontrainte favorisant le serrage des lèvres longitudinales. En outre, l'encombrement du dispositif est plus réduit qu'avec un renfort élastique externe.Preferably, the elastic reinforcement can be engaged inside the body, with its two longitudinal protuberances protruding outside the body to be applied on the respective outer faces of the longitudinal extensions of the body. This arrangement promotes the mechanical coupling between the elastic reinforcement and the body, and allows to give the assembly a preload favoring the tightening of the longitudinal lips. In addition, the size of the device is smaller than with an external elastic reinforcement.
On notera que cette disposition particulière du renfort élastique à l'intérieur du corps peut être appliquée à toute autre structure de corps, par exemple les corps décrits dans les documents d'art antérieur précités, et constitue ainsi une invention indépendante.Note that this particular arrangement of the elastic reinforcement inside the body can be applied to any other body structure, for example the bodies described in the aforementioned prior art documents, and thus constitutes an independent invention.
D'autres objets, caractéristiques et avantages de la présente invention ressortiront de la description suivante de modes de réalisation particuliers, faite en relation avec les figures jointes, parmi lesquelles :
- la
figure 1 illustre, en perspective, une boucle de raccordement selon un premier mode de réalisation à structure monobloc ; - les
figures 2 ,3 ,4 et5 illustrent, respectivement en vue de face, en vue de côté droit, en vue d'arrière et en vue de dessous, la boucle de raccordement selon lafigure 1 ; - la
figure 6 illustre, en perspective, une structure de renfort élastique selon un mode de réalisation de l'invention ; - les
figures 7, 8 ,9, 10 ,11 et 12 illustrent le renfort élastique de lafigure 1 , respectivement en vue de face, en vue de côté droit, en vue d'arrière, en vue de côté gauche, en vue de dessus et en vue de dessous ; - la
figure 13 illustre, en perspective, la boucle de raccordement d'un dispositif de raccordement électrique auto-dénudant selon un second mode de réalisation de l'invention, comprenant un corps de boucle de raccordement selon lesfigures 1 à 5 associé à un renfort élastique selon lesfigures 6 à 12 ; - les
figures 14 ,15 ,16 ,17 et 18 illustrent la boucle de raccordement de lafigure 13 , respectivement en vue de face, en vue de côté droit, en vue de côté gauche, en vue de dessus et en vue de dessous ; - la
figure 19 illustre, en perspective, un couple de boucles de raccordement selon lesfigures 13 à 18 , recevant deux conducteurs à connecter ; - la
figure 20 est une vue en perspective en coupe longitudinale partielle d'un dispositif de raccordement incorporant les boucles de raccordement de lafigure 19 ; - la
figure 21 est une vue en perspective en coupe partielle du dispositif de raccordement de lafigure 20 , recevant deux conducteurs à connecter ; - la
figure 22 illustre en perspective une boucle de raccordement selon un troisième mode de réalisation ; - les
figures 23 ,24 ,25 et26 illustrent la boucle de lafigure 22 , respectivement en vue de côté gauche, en vue de face, en vue de côté droit et en vue de dessus ; - la
figure 27 illustre en perspective une structure de renfort élastique selon un second mode de réalisation de l'invention ; - la
figure 28 est une vue en perspective éclatée montrant le corps de boucle de lafigure 22 et le renfort élastique de lafigure 27 , avant assemblage ; - la
figure 29 illustre en perspective une structure de dispositif de raccordement électrique auto-dénudant selon un quatrième mode de réalisation de l'invention, comprenant le corps de boucle et le renfort élastique de lafigure 28 ; - la
figure 30 est une vue en perspective en coupe partielle d'un dispositif de raccordement incorporant une boucle de raccordement selon l'un des modes de réalisation précédents, avec un boîtier et un poussoir agissant sur les lèvres de la boucle de raccordement en une première position ; - la
figure 31 est une vue similaire du dispositif de lafigure 30 avec le poussoir en une seconde position ; - la
figure 32 est une vue en perspective d'une boucle de raccordement selon un autre mode de réalisation de l'invention ; - la
figure 33 illustre en perspective une structure de dispositif de raccordement électrique incorporant le corps de boucle de lafigure 32 et un renfort élastique ; et - la
figure 34 illustre en perspective un dispositif de raccordement électrique auto-dénudant selon l'invention à trois connecteurs parallèles doubles.
- the
figure 1 illustrates, in perspective, a connection loop according to a first embodiment with a one-piece structure; - the
figures 2 ,3 ,4 and5 illustrate, respectively in front view, in right side view, in rear view and in bottom view, the connection loop according to thefigure 1 ; - the
figure 6 illustrates, in perspective, an elastic reinforcing structure according to one embodiment of the invention; - the
Figures 7, 8 ,9, 10 ,11 and 12 illustrate the elastic reinforcement of thefigure 1 respectively in a front view, in a right side view, a rear view, a left side view, a top view and a bottom view; - the
figure 13 illustrates, in perspective, the connection loop of a self-stripping electrical connection device according to a second embodiment of the invention, comprising a connection loop body according to theFigures 1 to 5 associated with an elastic reinforcement according to theFigures 6 to 12 ; - the
figures 14 ,15 ,16 ,17 and 18 illustrate the connection loop of thefigure 13 respectively in front view, in right side view, in left-side view, in plan view and in bottom view; - the
figure 19 illustrates, in perspective, a pair of connection loops according to theFigures 13 to 18 , receiving two drivers to connect; - the
figure 20 is a perspective view in partial longitudinal section of a connecting device incorporating the connecting loops of thefigure 19 ; - the
figure 21 is a perspective view in partial section of the connecting device of thefigure 20 , receiving two drivers to connect; - the
figure 22 illustrates in perspective a connection loop according to a third embodiment; - the
figures 23 ,24 ,25 and26 illustrate the loop of thefigure 22 , respectively in left-side view, in front view, in right-side view and in plan view; - the
figure 27 illustrates in perspective an elastic reinforcing structure according to a second embodiment of the invention; - the
figure 28 is an exploded perspective view showing the loop body of thefigure 22 and the elastic reinforcement of thefigure 27 before assembly; - the
figure 29 illustrates in perspective a self-stripping electrical connection device structure according to a fourth embodiment of the invention, comprising the loop body and the elastic reinforcement of thefigure 28 ; - the
figure 30 is a perspective view in partial section of a connecting device incorporating a connection loop according to one of the preceding embodiments, with a housing and a pusher acting on the lips of the connection loop in a first position; - the
figure 31 is a similar view of the device from thefigure 30 with the pusher in a second position; - the
figure 32 is a perspective view of a connection loop according to another embodiment of the invention; - the
figure 33 illustrates in perspective an electrical connection device structure incorporating the loop body of thefigure 32 and an elastic reinforcement; and - the
figure 34 illustrates in perspective a self-stripping electrical connection device according to the invention with three double parallel connectors.
On considère tout d'abord le mode de réalisation des
Dans ce mode de réalisation, un dispositif de raccordement électrique auto-dénudant selon l'invention comprend une boucle de raccordement 100 à corps 1 monobloc, réalisé en un métal bon conducteur de l'électricité tel qu'un alliage de cuivre, obtenu par découpage et pliage d'un flan de métal.In this embodiment, a self-stripping electrical connection device according to the invention comprises a
Le corps 1 comprend de façon générale deux flasques opposés 2 et 3, reliés l'un à l'autre par un pont de liaison 4, et se rapprochant progressivement l'un de l'autre jusqu'à deux lèvres longitudinales 6 et 7 respectives proches l'une de l'autre et séparées l'une de l'autre par une fente longitudinale de raccordement 5 qui se développe le long d'un axe longitudinal I-I.The
La fente longitudinale de raccordement 5 comprend, à l'une de ses extrémités longitudinales, une embouchure d'introduction et de dénudage 8, de forme évasée en V ouverte vers l'extérieur, comme on le voit mieux sur la
Les lèvres longitudinales 6 et 7 se raccordent chacune à un rebord latéral respectif 6a ou 7a qui se développe depuis la fente longitudinale de raccordement 5 à l'opposé des flasques respectifs 2 et 3. Depuis la fente longitudinale de raccordement 5, les rebords latéraux 6a et 7a se développent à l'écart l'un de l'autre. Dans la réalisation illustrée, les rebords latéraux 6a et 7a ont chacun une forme en portion de cylindre d'axe longitudinal et à profil transversal en arc de cercle : voir notamment la
Les lèvres 6 et 7 forment ainsi les zones des flasques les plus proches l'une de l'autre, tout en pouvant s'écarter l'une de l'autre pour le passage d'un conducteur électrique engagé en force à l'encontre de la force de rappel élastique produite par le corps 1.The
Sur les
Dans la zone d'embouchure évasée d'introduction et de dénudage 8, les lèvres longitudinales 6 et 7 comportent chacune un prolongement longitudinal respectif 6b ou 7b, s'étendant sensiblement parallèlement à la direction de l'axe longitudinal I-I.In the region of flaring insertion and stripping
Chacun des prolongements longitudinaux respectifs 6b et 7b comporte un tronçon du rebord latéral respectif 6a ou 7a, et comporte l'une des deux arêtes tranchantes respectives 9 ou 10 qui se développe dans le tronçon de rebord latéral respectif 6a ou 7a. Les arêtes tranchantes 9 et 10 sont ainsi directement en continuité des lèvres longitudinales 6 et 7.Each of the respective
Grâce à la présence des rebords latéraux 6a et 7a, les zones des lèvres 6 et 7 du corps 1, ainsi que leurs prolongements 6b et 7b, forment deux poutres longitudinales extrêmement rigides, aptes à transmettre aux arêtes tranchantes 9 et 10 les efforts de serrage élastique venant du corps 1.Thanks to the presence of the
Du fait de la présence des rebords latéraux 6a et 7a qui s'écartent l'un de l'autre, les arêtes tranchantes 9 et 10 de la zone d'embouchure évasée d'introduction et de dénudage 8 vont à la fois en s'écartant l'une de l'autre vers l'extérieur et en s'écartant depuis l'axe longitudinal 1-1 à l'opposé des flasques 2 et 3, comme on le voit sur les figures. On réalise ainsi des arêtes 9 et 10 hélicoïdales qui sont tranchantes pour la gaine des conducteurs électriques mais qui sont peu agressives pour des conducteurs multibrins.Due to the presence of the
Dans la réalisation illustrée sur les
Les prolongements longitudinaux 6b et 7b peuvent avantageusement être limités par des arêtes intérieures 9a et 10a localement repliées vers l'intérieur pour retenir le conducteur électrique avec un effet de harpon.The
Dans une zone distale de fente longitudinale de raccordement 5, à l'écart de l'embouchure évasée d'introduction et de dénudage 8, par exemple à l'extrémité opposée de la fente longitudinale de raccordement 5 comme illustré sur les
En pratique, les moyens de retenue 11 peuvent comporter une patte transversale 11 a (
Comme on le voit sur les
Pour former le corps 1 de façon à rapprocher l'une de l'autre les arêtes tranchantes 9 et 10, éventuellement jusqu'à leur contact, ou encore pour que la fente longitudinale de raccordement 5 présente une largeur qui va en diminuant progressivement en direction de la zone d'embouchure évasée d'introduction et de dénudage 8, les flasques latéraux 2 et 3 du corps 1 sont pliés vers l'intérieur selon une diagonale telle que la ligne de pliure 2a pour le flasque latéral 2, et la ligne de pliure 3a concernant le flasque latéral 3. La diagonale est orientée de façon à s'écarter de la fente longitudinale de raccordement 5 dans la zone de l'embouchure d'introduction et de dénudage 8.To form the
A titre d'exemple, les figures montrent une ligne de pliure 2a ou 3a selon laquelle l'angle de pliage β définitif (
En pratique, à partir d'un flan de matériau approprié, on réalise successivement les pliures 2a et 3a, puis le pont de liaison 4, et enfin l'accrochage par les moyens de retenue 11. De la sorte, les moyens de retenue 11 permettent d'armer le corps 1, c'est-à-dire de le mettre en précontrainte pour assurer une force de serrage relatif satisfaisante des lèvres longitudinales 6 et 7 l'une vers l'autre quel que soit le diamètre des conducteurs que l'on engage entre les lèvres longitudinales 6 et 7 pour leur raccordement.In practice, starting from a blank of suitable material, the
Les
Dans ce second mode de réalisation, la boucle de raccordement 101 n'est plus monobloc, mais comprend deux pièces, à savoir un corps élastique 1 tel que celui illustré précédemment sur les
On considère maintenant les
Comme on le voit sur ces figures, le renfort élastique 20 est également une structure fendue, avec une fente longitudinale 21, deux flasques latéraux 22 et 23 reliés l'un à l'autre par un pont de liaison 24.As seen in these figures, the
Le renfort élastique 20 comporte des excroissances longitudinales 25 et 26 prolongeant respectivement les flasques latéraux 22 et 23, avec des pattes de retour 25a et 26a respectives.The
Le renfort élastique 20 comporte une ligne de pliure en diagonale 22a sur le flasque latéral 22, et une ligne de pliure en diagonale 23a sur le flasque latéral 23. Ainsi, le renfort élastique 20 peut être armé et précontraint, de la même manière que le corps 1.The
En position assemblée, telle qu'illustrée sur les
Un avantage important de la position intérieure du renfort élastique 20 est d'assurer le complément de force de rappel élastique du corps 1 sans augmenter l'encombrement global du dispositif de raccordement. L'intérêt est de réduire ainsi l'encombrement transversal (distance entre les flasques 2 et 3), qui détermine le pas P entre une série de connecteurs parallèles (voir
Le renfort élastique 20 permet en outre de renforcer la rigidité des lèvres longitudinales 6 et 7, afin d'additionner au mieux les effets ressort du corps 1 et du renfort élastique 20, et afin d'éviter la torsion des prolongements longitudinaux 6b et 7b.The
Ces avantages sont indépendants de la forme et de l'agencement particuliers des arêtes tranchantes 9 et 10, et seraient obtenus également en associant le renfort élastique 20 à un corps tel que décrit dans les documents d'art antérieur précités.These advantages are independent of the particular shape and arrangement of the
Lors de l'utilisation, comme on le voit schématiquement sur la
Du fait que les arêtes tranchantes 9 et 10, dans la zone d'embouchure évasée d'introduction et de dénudage 8, vont à la fois en s'écartant l'une de l'autre vers l'extérieur et en s'écartant de l'axe longitudinal 1-1 à l'opposé des flasques 2 et 3, les arêtes tranchantes 9 et 10 ont une orientation qui favorise le dénudage et la retenue mécanique du conducteur 30. En outre, le dénudage est aussi favorisé par la forme hélicoïdale des arêtes tranchantes 9 et 10, forme qui résulte de la structure cylindrique des rebords latéraux 6a et 7a.Because the
Du fait de la forme générale du corps 1, soit le conducteur 30 peut être engagé pour fixer son extrémité à la boucle de raccordement électrique 100 comme illustré sur la
Dans le mode de réalisation illustré sur les
On considère maintenant les
La
Dans les modes de réalisation des
De la sorte, le pont de liaison 4 peut occuper toute la longueur du corps 1 de la boucle 100, pour conférer une raideur relativement grande.In this way, the connecting
Dans ce cas, les moyens de retenue 11 sont disposés dans la zone de fente longitudinale de raccordement 5 qui est à l'écart de l'embouchure évasée d'introduction et de dénudage 8.In this case, the retaining means 11 are arranged in the
Selon une autre possibilité qui va être décrite dans les modes de réalisation des figures suivantes, le pont de liaison 4 qui relie les flasques 2 et 3 peut être situé sur les bords transversaux respectifs 2c, 3c qui sont opposés à l'embouchure évasée d'introduction et de dénudage 8, comme on le voit par exemple sur les
Dans ce cas, les moyens de retenue 11 a sont disposés en opposition de la fente longitudinale de raccordement 5, soit entre les bords longitudinaux respectifs 2b et 3b des flasques 2 et 3, soit entre les bords transversaux 2d et 3d respectifs qui sont du côté de l'embouchure évasée d'introduction et de dénudage, au voisinage des bords longitudinaux 2b et 3b.In this case, the retaining means 11a are arranged in opposition to the longitudinal connecting
Dans ce mode de réalisation des
Sur la
Les
Ce mode de réalisation des
Les
Dans les modes de réalisation illustrés sur les
On considère maintenant les
Dans ce mode de réalisation, le poussoir 43 a une seconde fonction de réglage de l'écartement des lèvres longitudinales de part et d'autre de la fente longitudinale de raccordement 5 en fonction du diamètre du conducteur engagé dans le passage 41. Pour cela, le poussoir 43 est conformé pour écarter plus ou moins la fente longitudinale de raccordement 5 selon le diamètre du conducteur à raccorder. En pratique, dans la réalisation illustrée, le poussoir 43 comporte une paroi médiane 43a qui vient s'engager à l'intérieur de la boucle de raccordement 100, et qui comporte des bossages latéraux, tels que le bossage 43b, aptes à venir porter sur les lèvres longitudinales de part et d'autre de la fente longitudinale de raccordement 5. Du fait de la forme en V de la fente longitudinale de raccordement 5, comme illustré sur les
Sur la
Si le conducteur est de plus petit diamètre, on se réfère alors à la
Ce mode de réalisation permet ainsi d'adapter l'écartement des lèvres en fonction du diamètre du conducteur, pour réduire la force de pénétration des arêtes tranchantes dans la gaine isolante du conducteur, et en évitant de mordre dans le conducteur lui-même.This embodiment thus makes it possible to adapt the spacing of the lips as a function of the diameter of the conductor, to reduce the force of penetration of the cutting edges into the insulating sheath of the conductor, and to avoid biting into the conductor itself.
On notera que cette disposition d'un poussoir agissant comme moyen de réglage d'écartement des lèvres peut s'appliquer à des structures de corps différentes, par exemple les structures décrites dans les documents d'art antérieur précités, en produisant les mêmes effets.It should be noted that this arrangement of a pusher acting as a means of adjusting the spacing of the lips can be applied to different body structures, for example the structures described in the above-mentioned prior art documents, producing the same effects.
En alternative, la paroi médiane 43a peut être dépourvue de bossages mais peut coopérer avec des bossages ou nervures prévus sur le corps 1, pour remplir la même fonction de réglage d'écartement des lèvres.Alternatively, the
Le mode de réalisation de la
La
Sur la
La présente invention n'est pas limitée aux modes de réalisation qui ont été explicitement décrits, mais elle en inclut les diverses variantes et généralisations contenues dans le domaine des revendications ci-après.The present invention is not limited to the embodiments which have been explicitly described, but it includes the various variants and generalizations thereof within the scope of the claims below.
Claims (15)
- Self-stripping electrical connection device for connecting at least one electrical conductor (30, 130) having a conducting core (30a) surrounded by an insulating sheath (30b), the device comprising a connecting loop (100, 101, 100a) having an elastically deformable conducting body (1) with two opposite flanges (2, 3) joined together by a linking bridge (4) and converging towards one another as far as two respective longitudinal lips (6, 7) separated from one another by a longitudinal connecting slot (5) extending along a longitudinal axis (I-I), the body (1) having at least one V-shaped flared insertion and stripping mouth (8) flanked by cutting edges (9, 10), in which:- the longitudinal lips (6, 7) are each connected to a lateral rim (6a, 7a) extending laterally from the longitudinal connecting slot (5) in the opposite direction from the respective flanges (2, 3),- in the flared insertion and stripping mouth (8) zone, the longitudinal lips (6, 7) each have a respective longitudinal extension (6b, 7b) having a portion of the respective lateral rim (6a, 7a) and having one of the respective cutting edges (9, 10),characterised in that:- each cutting edge (9, 10) extends entirely in the respective lateral rim (6a, 7a),- the cutting edges (9, 10) of the flared insertion and stripping mouth (8) zone both diverge outwards from one another and diverge from the longitudinal axis (I-I) in the opposite direction from the flanges (2, 3).
- Self-stripping electrical connection device according to claim 1, characterised in that the lateral rims (6a, 7a) are each shaped as a portion of a cylinder with a curved or arcuate transverse profile.
- Self-stripping electrical connection device according to one of claims 1 and 2, characterised in that the cutting edges (9, 10) have cutting edge portions (9a, 10a) that are locally bent inwards in order to grip the electrical conductor (30, 130).
- Self-stripping electrical connection device according to any one of claims 1 to 3, characterised in that, when no external stress is applied to the connecting loop body (1), the longitudinal connecting slot (5) has a width which narrows gradually towards the flared insertion and stripping mouth (8) zone.
- Self-stripping electrical connection device according to claim 4, characterised in that the flanges (2, 3) each have a diagonal fold line (2a, 3a) along which the flange is bent inwards.
- Self-stripping electrical connection device according to any one of claims 1 to 5, characterised in that:- the linking bridge (4) joins the flanges (2, 3) together along their respective longitudinal edges (2b, 3b) on the opposite side to the longitudinal connecting slot (5),- in a distal zone of the longitudinal connecting slot (5) away from the flared insertion and stripping mouth (8), the longitudinal lips (6, 7) of the body (1) are kept towards one another by retaining means (11) that oppose their relative separation.
- Self-stripping electrical connection device according to claim 6, characterised in that the retaining means (11) comprise a transverse tab (11a) which clips onto a cutout (11b) opposite to create a pivoting attachment of transverse axis (II).
- Self-stripping electrical connection device according to any one of claims 1 to 5, characterised in that:- the linking bridge (4) joins the flanges (2, 3) along their respective transverse edges (2c, 3c) on the opposite side to the flared insertion and stripping mouth (8) ,- along a portion opposite to the longitudinal connecting slot (5) the flanges (2, 3) are held towards one another by retaining means (11a) that oppose their relative separation.
- Self-stripping electrical connection device according to any one of claims 1 to 8, characterised in that it further comprises an added elastic reinforcement (20) which urges the longitudinal lips (6, 7) elastically towards one another.
- Self-stripping electrical connection device according to claim 9, characterised in that the elastic reinforcement (20) is a structure with a longitudinal slot (21) with longitudinal protrusions (25, 26) which clamps the longitudinal extensions (6b, 7b) of the body (1) towards one another.
- Self-stripping electrical connection device according to one of claims 9 and 10, characterised in that the elastic reinforcement (20) is added on so that it can slide longitudinally with respect to the connecting loop body (1) so that its longitudinal position is adjustable so that the force with which the longitudinal lips (6, 7) are clamped together in the flared insertion and stripping mouth (8) zone can be adjusted.
- Self-stripping electrical connection device according to any one of claims 9 to 11, characterised in that the elastic reinforcement (20) is engaged inside the body (1) with its two longitudinal protrusions (25, 26) emerging outside the body (1) to press on the respective external faces of the longitudinal extensions (6b, 7b) of the body (1).
- Self-stripping electrical connection device according to any one of claims 1 to 12, characterised in that the connecting loop body (1) comprises an axial assembly portion (102, 102a), extending on the opposite side from the insertion and stripping mouth (8, 8a) and configured to allow male-female axial assembly with a corresponding axial-assembly portion of a second connecting loop body, the combination thus allowing two electrical conductors (30, 130) to be connected.
- Self-stripping electrical connection device according to any one of claims 1 to 13, characterised in that it comprises an insulating housing (40) in which the connecting loop body (1) is housed, the insulating housing (40) having at least one passage (41, 42) into which to engage an electrical conductor (30, 130) that is to be connected, and having a pusher (43, 44) able to push the conductor (30, 130) to engage it radially in the longitudinal connecting slot (5, 5a) via the flared insertion and stripping mouth (8, 8a).
- Self-stripping electrical connection device according to claim 14, characterised in that the pusher (43) is configured to open up the longitudinal connecting slot (5) to a greater or lesser degree according to the diameter of the conductor (30, 130) that is to be connected.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0856252A FR2936107B1 (en) | 2008-09-17 | 2008-09-17 | SELF-CONDUCTING ELECTRICAL CONNECTION DEVICE |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2166619A1 EP2166619A1 (en) | 2010-03-24 |
EP2166619B1 true EP2166619B1 (en) | 2012-07-25 |
Family
ID=40601421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09170479A Not-in-force EP2166619B1 (en) | 2008-09-17 | 2009-09-16 | Automatisch freilegende elektrische Anschlussvorrichtung |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2166619B1 (en) |
FR (1) | FR2936107B1 (en) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1362994A (en) * | 1963-07-12 | 1964-06-05 | United Carr Fastener Corp | Electrical connector |
DE7036215U (en) * | 1970-09-30 | 1971-01-21 | Siemens Ag | CLAMPING ELEMENT FOR STRIP-FREE CONNECTION OF ELECTRICAL CONDUCTORS. |
US4017140A (en) * | 1975-10-28 | 1977-04-12 | Amp Incorporated | Wire-in-slot electrical connections |
US4113338A (en) * | 1977-01-03 | 1978-09-12 | Bunker Ramo Corporation | Insulation-piercing contact |
FR2618611B1 (en) * | 1987-07-22 | 1989-12-01 | Saligny Yves | SELF-STRIPPING CONNECTION TERMINAL FOR ELECTRICAL CONDUCTOR |
FR2743944B1 (en) * | 1996-01-19 | 1998-03-20 | Entrelec Sa | ELECTRICAL CONNECTION MODULE |
FR2764125A1 (en) * | 1997-05-30 | 1998-12-04 | Entrelec Sa | SLOT CONNECTION PIECE FOR CONNECTION ARRANGEMENT FOR AT LEAST ONE ELECTRIC WIRE |
FR2782194B1 (en) * | 1998-08-07 | 2003-08-08 | Entrelec Sa | SELF-STRIPPING CONNECTION DEVICE |
FR2819348B1 (en) | 2001-01-05 | 2006-12-01 | Entrelec | AUTODENUDING CONVERGENT SLOT CONNECTION |
FR2876226B1 (en) | 2004-10-01 | 2007-01-19 | Abb Entrelec Soc Par Actions S | ELECTRICAL AND MECHANICAL CONNECTING DEVICE OF AN ELECTRICAL CONNECTING DEVICE |
-
2008
- 2008-09-17 FR FR0856252A patent/FR2936107B1/en not_active Expired - Fee Related
-
2009
- 2009-09-16 EP EP09170479A patent/EP2166619B1/en not_active Not-in-force
Also Published As
Publication number | Publication date |
---|---|
FR2936107A1 (en) | 2010-03-19 |
FR2936107B1 (en) | 2014-11-21 |
EP2166619A1 (en) | 2010-03-24 |
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