EP1542322B1 - Crimp device of a contact to a cable - Google Patents

Crimp device of a contact to a cable Download PDF

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Publication number
EP1542322B1
EP1542322B1 EP04300842A EP04300842A EP1542322B1 EP 1542322 B1 EP1542322 B1 EP 1542322B1 EP 04300842 A EP04300842 A EP 04300842A EP 04300842 A EP04300842 A EP 04300842A EP 1542322 B1 EP1542322 B1 EP 1542322B1
Authority
EP
European Patent Office
Prior art keywords
crimping
barrel
diaphragm
sheath
cable
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
Application number
EP04300842A
Other languages
German (de)
French (fr)
Other versions
EP1542322A1 (en
Inventor
Daniel Labro
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Airbus Operations SAS
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Airbus Operations SAS
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Filing date
Publication date
Application filed by Airbus Operations SAS filed Critical Airbus Operations SAS
Publication of EP1542322A1 publication Critical patent/EP1542322A1/en
Application granted granted Critical
Publication of EP1542322B1 publication Critical patent/EP1542322B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/042—Hand tools for crimping
    • H01R43/0424—Hand tools for crimping with more than two radially actuated mandrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B7/00—Presses characterised by a particular arrangement of the pressing members
    • B30B7/04—Presses characterised by a particular arrangement of the pressing members wherein pressing is effected in different directions simultaneously or in turn
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/048—Crimping apparatus or processes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/058—Crimping mandrels
    • H01R43/0585—Crimping mandrels for crimping apparatus with more than two radially actuated mandrels
    • 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
    • H01R4/10—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/183—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5313—Means to assemble electrical device
    • Y10T29/532—Conductor
    • Y10T29/53209—Terminal or connector
    • Y10T29/53213—Assembled to wire-type conductor
    • Y10T29/53235—Means to fasten by deformation

Definitions

  • the invention relates to a device for crimping a contact on an electric cable. Some contacts are crimped in two places on a cable. A first crimping, said electrical crimping, is performed between a barrel of said contact and a conductive portion of the cable. A second crimping, said crimping sealing, is performed further upstream between the barrel of the contact and a cable sheath.
  • the invention more specifically relates to a device for crimping a barrel of a contact on a sheath of an electric cable.
  • US 4,614,107 (D1) relates to a crimping device of a barrel on an electrical conductor provided with a diaphragm formed of jaws.
  • An object of the invention is to allow tight crimping of a barrel of a contact on a sheath of an electric cable. Another object of the invention is to allow the crimping of different cable diameters with a same crimping device. Another object of the invention is to ensure a good sealing crimping regardless of the diameter of the electric cable.
  • a contact has a barrel with a frustoconical outer circumference.
  • An electric cable is housed in the drum.
  • the drum is made of a deformable and conductive material.
  • a stripped portion of the cable and a portion of the cable wrapped in a sheath are housed in the barrel.
  • a first crimping, or electrical crimping allows connect the contact barrel to a core of the cable.
  • the core of the cable denotes strands stripped of the cable, that is to say not surrounded by the sheath.
  • a second crimping, or tight crimping ensures a seal of the connection. For this the barrel of the contact is crimped on the sheath of the cable. These two crimps are made simultaneously or one after the other.
  • ovalization means are for example formed of two pads.
  • a contact zone of each stud with the drum is flat.
  • the two studs forming the ovalization means are applied on either side of the barrel, in order to flatten it. These flattened faces of the barrel are crimped on the sheath.
  • a second step once the barrel partially flattened on the sheath, it is applied to the two ovoid faces of the barrel compression means.
  • the compression means are for example formed of two pads.
  • Each stud has a contact zone with the drum.
  • the zone of contact with the barrel has an outline which follows the ovoid contour of the ovoid faces of the barrel.
  • the application of the compression means on the barrel crimps the ovoid faces of the barrel on the sheath.
  • Such means of ovalization and compression allow a tight crimping of a connection.
  • the contact zone of the compression means must follow exactly the ovoid contour of the barrel.
  • the ovoid contour of the barrel obtained after the application of ovalization means varies. It is therefore necessary to use different compression means for each diameter of the cable crimp. Furthermore, it is not possible to control a quality of the seal of the connection made by such crimping means.
  • a crimping device is used, the crimping diameter of which can vary according to the needs of a user. say according to a cable diameter.
  • crimping diameter is meant the diameter that it is desired that the crimping device imposes on the barrel at the end of the crimping operation.
  • the crimping device of the invention comprises a diaphragm.
  • the diaphragm of the invention is provided with a plurality of jaws. A variation of a spacing of the jaws relative to a center of the diaphragm makes it possible to modify an opening diameter of said diaphragm.
  • each jaw of the diaphragm is provided with guide means.
  • the guiding means are for example formed by rails along which the jaws slide, so as to approach or move away from the center of the diaphragm.
  • the guiding means are for example formed by rails along which the jaws slide, so as to approach or move away from the center of the diaphragm.
  • sheaths of several diameters can be crimped by varying the aperture diameter of the diaphragm, by moving the jaws away from or closer to the center of the diaphragm. And by modifying a number of jaws of the device of the invention, one can obtain diaphragms each covering a different range of diameters of sheaths, so as to allow tight crimping for all diameters of existing sheaths.
  • the jaws have a triangular section.
  • a section of the device of the invention is therefore polygonal and non-circular.
  • a sheath of an electrical cable and a shank of a crimp contact are generally circular in section.
  • the barrel After crimping the barrel on the sheath using the device of the invention, the barrel has a polygonal section at the crimping point. It is therefore necessary to take into account, before crimping, tolerances after crimping each drum. Each drum has a tolerance between a minimum diameter and a maximum diameter. If the diameter imposed on the barrel by crimping is less than the minimum diameter, the barrel may break. and the cable will be weakened. If the diameter imposed by the sheath housed in the barrel is greater than the maximum diameter, the barrel will not be restricted enough and the seal may not be ensured.
  • the opening diameter of the diaphragm at the end of crimping the drum around the sheath must take into account these tolerances to ensure the integrity and tightness of the connection.
  • the barrel once crimped on the cable sheath has a polygonal section.
  • the diaphragm comprises twelve jaws.
  • the section of the barrel crimped on the sheath then has a dodecagonal shape.
  • the diaphragm comprising eight jaws.
  • the section of the barrel crimped on the sheath then has an octagonal shape.
  • round jaws In a particular embodiment of the invention, it is possible to use round jaws.
  • round jaws is meant a jaw having a triangular section, but at least one side has a rounded end. A radius of curvature of a rounded end of each of the round jaws is directed to a center of the diaphragm.
  • the section of the diaphragm In the closed position, that is to say for a minimum aperture diameter of the diaphragm, the section of the diaphragm is circular. This diameter corresponds to the minimum diameter that can be crimped with such a crimping device. Crimping obtained with diameters close to this minimum opening diameter is perfectly sealed.
  • the section of the barrel, crimped on a sheath having a diameter close to the minimum aperture diameter of the diaphragm, is circular.
  • the diaphragm section has a polygonal shape with rounded corners.
  • the section of the barrel crimped on a sheath in such a case follows an inner contour of the aperture of the diaphragm.
  • the section of the barrel crimped on the sheath has a polygonal shape with rounded corners.
  • a change in aperture diameter of the diaphragm can be controlled by a gear controller.
  • the gears allow the jaws to slide on the rails serving as guiding means. It is also possible to use a traditional mechanical control device, comprising for example cams.
  • the means for controlling the quality of the crimping comprise, for example, force measurement sensors. Each jaw of the diaphragm can thus be provided with a force measurement sensor.
  • reference data is entered into a processor.
  • These reference data may vary depending in particular on the material forming the barrel of the crimp contact on the sheath. Indeed, depending on the material used to make the barrel, the effort required to move the jaws, and thus crush the barrel on the sheath, will be different.
  • the reference data includes different force values for changing the aperture diameter of the diaphragm from the maximum aperture diameter to the minimum diameter.
  • the reference data also includes the values of the corresponding displacements expected of the jaws, for each value of effort. This gives a data memory a crimp characteristic reference effort / displacement. This crimping feature is subsequently used as a basis of comparison with the processor to control the quality of crimping performed by means of the device of the invention.
  • the processor checks, as a function of the force exerted on the diaphragm, if the movement of the jaws obtained corresponds to the expected displacement.
  • the processor compares the values provided on the one hand by the force sensor and on the other hand by the displacement sensor, with the corresponding values on the crimping characteristic. If the values provided by the sensors are identical to the expected values according to the reference characteristic, the crimping is of good quality. sealing connection is assured.
  • the displacement of the jaws is greater than the expected displacement, the connection may not be perfectly sealed, or the connection may have been damaged. For example, a strand of the electrical cable may have been cut before or at the time of crimping. The resistance of the cable to compression by the barrel is therefore less than expected. Thus, the displacement obtained for a given effort is greater than that expected.
  • an action of the sealed crimping device it is possible to couple an action of the sealed crimping device to an action of an electrical crimping device.
  • electrical crimping is meant crimping the barrel of the contact on the core of the cable.
  • a diaphragm aperture diameter control device may also operate the electrical crimping device.
  • the invention therefore relates to a device for crimping a drum according to claim 1.
  • the diaphragm is formed of jaws, each jaw having a generally triangular shape section.
  • section of generally triangular shape is meant a section with three sides formed by three lines, but also a section with three sides, at least one of the sides has a rounded end.
  • the invention also relates to a barrel of a contact crimped on a sheath of a cable, characterized in that the barrel has a section of polygonal shape.
  • the invention also relates to a barrel of a contact crimped on a sheath of a cable, characterized in that the barrel has a circular section.
  • FIG. 1 there is shown a crimping device 100 of the invention.
  • the device 100 partially frames a shaft 301 of a contact 300.
  • an electric cable 200 In the shaft 300 is housed an electric cable 200.
  • a core 202 of the cable 200 is housed at the location of a closed end 302 of the barrel 300.
  • Internal walls 303 of the closed end 302 of the barrel 301 crimp the core 202 of the cable 200.
  • a portion of the cable 200, provided with the sheath 201, is housed in the barrel 301 at the location of an open end 304 of the barrel 300.
  • the crimping device 100 of the invention must make it possible to crimp internal walls 305 of the open end 304 of the barrel 301 against the sheath 201, in order to seal the connection between the cable 200 and the contact 300.
  • the crimping device 100 can be adapted to different diameters of cables 200 and drums 300. That is to say, the same crimping device 100 can allow tight crimping of different drum diameters 300 and cables 200.
  • the crimping device 100 of the invention comprises a diaphragm 101 ( Figure 2).
  • FIG. 2 is shown an embodiment of the crimping device 100 of the invention.
  • the diaphragm 101 is formed of eight jaws 102. A displacement of the jaws 102 towards a center C of the diaphragm 101 makes it possible to reduce an opening diameter of said diaphragm 101. Conversely, by moving the jaws 102 away from the center C of the diaphragm 101, the opening diameter d of the diaphragm 101 is increased. Depending on the opening diameter d of the diaphragm 101, drums of different diameters can be crimped onto cables of different diameters.
  • a control device 103 of the aperture diameter d of the diaphragm 101 makes it possible to modify, according to the needs of a user, the aperture diameter d of the diaphragm 101.
  • the controller 103 operates a cam device 104.
  • the cam device 104 is formed of a hollow cylinder 110 in which are housed the jaws 102 of the diaphragm 101.
  • An inner contour of the cylinder 110 is provided with four high cams 105 arranged regularly on a circular periphery of the cylinder 110.
  • An outer face 106 of four first jaws 102 is provided with a boss 107 coming into contact with a high cam 105.
  • the inner contour of the cylinder 110 is also provided with four low cams (not visible in Figure 2) arranged regularly around the circular periphery of the cylinder. cylinder 110.
  • the low cams are arranged in staggered rows with the high cams 105.
  • An outer face 106 of each of the other four jaws 102 is provided with a boss 111 coming into contact with a low cam.
  • the jaws 102 provided with a boss 107 at the location of a high end are alternated with the jaws 102 provided with a boss 111 at the location of a low end.
  • a cam 105 of the cam device 104 simultaneously moves two jaws 102 contiguous.
  • An actuation of the control device 103 allows a rotation of the cylinder 104 around the diaphragm 101, imposing the jaws 102 of the diaphragm 101 a displacement towards the center C, or on the contrary in a direction opposite to the center C.
  • the control device 103 is for example an electronic device for remotely controlling the rotation of the cylinder 104 to the left G or to the right D, in order to increase or decrease the opening diameter d of the diaphragm 101. It is it is possible to provide that the control device 103 can also actuate an electric crimping device (not shown) of the closed end 302 of the barrel 300 on the stripped portion 202 of the cable 200. A specific key SE can be provided for this purpose on the control device 103.
  • the jaws 102 of the diaphragm 101 have a triangular section with flat faces. That is, each side of the triangular section is straight.
  • An opening 108 of the diaphragm 101 thus has a polygonal section.
  • the sheath 201 of the cable 200 to be crimped and the shaft 301 have a circular section.
  • a final diameter of the barrel 301 at the crimping location around the sheath 201 thus varies from one point P1 to another point P2 of the crimping.
  • a maximum diameter dmax and a diameter minimum dmin of the barrel 301 at the crimping point must remain within a range of tolerances of the barrel.
  • FIGS. 4a and 4b show another embodiment of the diaphragm 101 of the invention.
  • An end of one side 109 of the triangular section of each jaw 102 is rounded.
  • a radius of curvature of the rounded end is directed towards the center C of the diaphragm 101.
  • the section of the opening 108 is circular.
  • the crimping obtained for this circular section is perfectly sealed, since it forces the shaft 301 to follow a contour of the sheath 201.
  • a polygon is obtained whose four corners are rounded as shown in FIG. 4a.
  • a length L of the straight portions of the rounded sides 109 of the jaws 102 increases with the opening diameter of the diaphragm 101.
  • each jaw 102 may be provided with a sensor with a force exerted on said jaw 102. It is also possible to provide each jaw 102 with a sensor for moving the jaw 102 relative to the center C of the diaphragm 101. Thus, it is possible to control the displacement of the jaw 102 as a function of the force exerted on said jaw 102. If the displacement of the jaw 102 does not correspond to the displacement expected for the force exerted on the jaw 102, the crimping of the barrel 301 on the sheath 201 may be faulty.
  • the crimping device of the invention thus makes it possible to guarantee tight crimping of the barrel of a contact on the sheath of an electric cable, in particular in addition to an electrical crimping of the barrel on the strands of the cable.
  • the connection between the contact and the electrical cable according to the invention is perfectly sealed.
  • the same crimping device according to the invention makes it possible to crimp a large number of barrels of different diameters on sheaths of electric cables of different diameters.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Multi-Conductor Connections (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

The device has a diaphragm (101) applied to the walls of a core against a sheath of an electrical cable. The diaphragm consists of eight clamping jaws (102) that have a section of triangular form. A control unit controls the crimping quality of the core on the sheath. The control unit has a force sensor for crimping according to the displacement of the clamping jaws. An independent claim is also included for a core.

Description

L'invention a pour objet un dispositif de sertissage d'un contact sur un câble électrique. Certains contacts sont sertis en deux endroits sur un câble. Un premier sertissage, dit sertissage électrique, est réalisé entre un fût dudit contact et une partie conductrice du câble. Un deuxième sertissage, dit sertissage d'étanchéité, est réalisé plus en amont entre le fût du contact et une gaine du câble. L'invention a plus précisément pour objet un dispositif de sertissage d'un fût d'un contact sur une gaine d'un câble électrique.The invention relates to a device for crimping a contact on an electric cable. Some contacts are crimped in two places on a cable. A first crimping, said electrical crimping, is performed between a barrel of said contact and a conductive portion of the cable. A second crimping, said crimping sealing, is performed further upstream between the barrel of the contact and a cable sheath. The invention more specifically relates to a device for crimping a barrel of a contact on a sheath of an electric cable.

Le document US 4 614 107 (D1) concerne un dispositif de sertissage d'un fût sur un conducteur électrique muni d'un diaphragme formé de mors.US 4,614,107 (D1) relates to a crimping device of a barrel on an electrical conductor provided with a diaphragm formed of jaws.

Un but de l'invention est de permettre un sertissage étanche d'un fût d'un contact sur une gaine d'un câble électrique. Un autre but de l'invention est de permettre le sertissage étanche de différents diamètres de câbles avec un même dispositif de sertissage. Un autre but de l'invention est d'assurer une bonne étanchéité du sertissage quel que soit le diamètre du câble électrique.An object of the invention is to allow tight crimping of a barrel of a contact on a sheath of an electric cable. Another object of the invention is to allow the crimping of different cable diameters with a same crimping device. Another object of the invention is to ensure a good sealing crimping regardless of the diameter of the electric cable.

En électronique, des câbles permettent de raccorder des systèmes électroniques entre eux ou de les relier à une alimentation électrique. D'une manière générale, il est indispensable de garantir la sécurité de ces connexions. Par ailleurs, dans le domaine de l'aéronautique une connexion entre un câble et un contact doit être fiable quelles que soient des conditions extérieures auxquelles elle est soumise. Par exemple, au niveau d'un avion, la température peut varier entre -50°C, lorsqu'il est dans les airs, et +40°C lorsqu'il est posé au sol. Ces variations de température sont subies en quelques heures. Or, des variations de température et de pression de grandes amplitudes ne doivent pas endommager les connexions électriques. Notamment, l'étanchéité d'une connexion est fondamentale pour empêcher les phénomènes de corrosion. L'intérêt de sertir les éléments intervenant dans une connexion électrique est donc capital dans le domaine de l'aéronautique.In electronics, cables make it possible to connect electronic systems to each other or to connect them to a power supply. In general, it is essential to guarantee the security of these connections. Furthermore, in the field of aeronautics a connection between a cable and a contact must be reliable regardless of the external conditions to which it is subjected. For example, at an airplane, the temperature can vary between -50 ° C, when in the air, and + 40 ° C when placed on the ground. These temperature variations are experienced in a few hours. However, variations in temperature and pressure of large amplitudes should not damage the electrical connections. In particular, the sealing of a connection is fundamental to prevent corrosion phenomena. The interest of crimping the elements involved in an electrical connection is therefore crucial in the field of aeronautics.

On connaît, pour garantir une telle qualité de la connexion, des contacts à double sertissage. Un contact comporte un fût avec un pourtour extérieur tronconique. Un câble électrique est logé dans le fût. Le fût est fabriqué dans un matériau déformable et conducteur. Une partie dénudée du câble ainsi qu'une portion du câble enveloppé dans une gaine sont logées dans le fût. Un premier sertissage, ou sertissage électrique, permet de raccorder le fût du contact à une âme du câble. L'âme du câble désigne des brins dénudés du câble, c'est-à-dire non entourés par la gaine. Un deuxième sertissage, ou sertissage étanche, permet d'assurer une étanchéité de la connexion. Pour cela le fût du contact est serti sur la gaine du câble. Ces deux sertissages sont réalisés simultanément ou l'un après l'autre.In order to guarantee such quality of the connection, double crimp contacts are known. A contact has a barrel with a frustoconical outer circumference. An electric cable is housed in the drum. The drum is made of a deformable and conductive material. A stripped portion of the cable and a portion of the cable wrapped in a sheath are housed in the barrel. A first crimping, or electrical crimping, allows connect the contact barrel to a core of the cable. The core of the cable denotes strands stripped of the cable, that is to say not surrounded by the sheath. A second crimping, or tight crimping, ensures a seal of the connection. For this the barrel of the contact is crimped on the sheath of the cable. These two crimps are made simultaneously or one after the other.

Pour réaliser le sertissage étanche, il est connu dans un premier temps d'appliquer, sur une zone du fût encadrant la gaine, des moyens d'ovalisation. Les moyens d'ovalisation sont par exemple formés de deux plots. Une zone de contact de chaque plot avec le fût est plane. Les deux plots formant les moyens d'ovalisation sont appliqués de part et d'autre du fût, afin de l'aplatir. Ces faces aplaties du fût sont serties sur la gaine. Dans un deuxième temps, une fois le fût partiellement aplati sur la gaine, on applique sur les deux faces ovoïdes du fût des moyens de compression. Les moyens de compression sont par exemple formés de deux plots. Chaque plot comporte une zone de contact avec le fût. La zone de contact avec le fût a un contour qui suit le contour ovoïde des faces ovoïdes du fût. L'application des moyens de compression sur le fût permet de sertir les faces ovoïdes du fût sur la gaine.To achieve the tight crimping, it is known in the first place to apply, on a zone of the barrel flanking the sheath, ovalization means. The ovalization means are for example formed of two pads. A contact zone of each stud with the drum is flat. The two studs forming the ovalization means are applied on either side of the barrel, in order to flatten it. These flattened faces of the barrel are crimped on the sheath. In a second step, once the barrel partially flattened on the sheath, it is applied to the two ovoid faces of the barrel compression means. The compression means are for example formed of two pads. Each stud has a contact zone with the drum. The zone of contact with the barrel has an outline which follows the ovoid contour of the ovoid faces of the barrel. The application of the compression means on the barrel crimps the ovoid faces of the barrel on the sheath.

De tels moyens d'ovalisation et de compression permettent de réaliser un sertissage étanche d'une connexion. Cependant, pour garantir l'étanchéité de ce sertissage, la zone de contact des moyens de compression doit suivre exactement le contour ovoïde du fût. Or, selon un diamètre du câble électrique pour lequel on souhaite réaliser une connexion, le contour ovoïde du fût obtenu après l'application des moyens d'ovalisation varie. Il est donc nécessaire d'utiliser des moyens de compression différents pour chaque diamètre du câble à sertir. Par ailleurs, il n'est pas possible de contrôler une qualité de l'étanchéité de la connexion réalisée par de tels moyens de sertissage.Such means of ovalization and compression allow a tight crimping of a connection. However, to guarantee the tightness of this crimping, the contact zone of the compression means must follow exactly the ovoid contour of the barrel. However, according to a diameter of the electric cable for which it is desired to make a connection, the ovoid contour of the barrel obtained after the application of ovalization means varies. It is therefore necessary to use different compression means for each diameter of the cable crimp. Furthermore, it is not possible to control a quality of the seal of the connection made by such crimping means.

Dans l'invention, on cherche à résoudre les problèmes énoncés ci-dessus en proposant un dispositif de sertissage permettant de sertir de manière étanche des fûts de contacts sur des câbles de différents diamètres. On propose également un dispositif permettant de contrôler une étanchéité du sertissage réalisé.In the invention, it seeks to solve the problems stated above by providing a crimping device for crimping tightly contact drums on cables of different diameters. There is also provided a device for controlling a tightness of the crimping performed.

Pour arriver à ce résultat, on utilise un dispositif de sertissage dont un diamètre de sertissage peut varier selon des besoins d'un utilisateur, c'est à dire selon un diamètre du câble. Par diamètre de sertissage, on entend le diamètre qu'on souhaite que le dispositif de sertissage impose au fût en fin de l'opération de sertissage. Pour cela le dispositif de sertissage de l'invention comporte un diaphragme. Le diaphragme de l'invention est muni d'une pluralité de mors. Une variation d'un écartement des mors par rapport à un centre du diaphragme permet de modifier un diamètre d'ouverture dudit diaphragme. Pour cela, chaque mors du diaphragme est muni de moyens de guidage. Les moyens de guidage sont par exemple formés par des rails le long desquels coulissent les mors, de manière à s'approcher ou s'éloigner du centre du diaphragme. Par ailleurs, en modifiant le nombre de mors formant le diaphragme, on peut modifier une section dudit diaphragme. Ainsi, plus le nombre de mors est élevé, plus la section du diaphragme correspondant tend vers une section circulaire. Et plus la section du diaphragme est circulaire et plus les sertissages réalisés à l'aide d'un tel diaphragme sont étanches.To achieve this result, a crimping device is used, the crimping diameter of which can vary according to the needs of a user. say according to a cable diameter. By crimping diameter is meant the diameter that it is desired that the crimping device imposes on the barrel at the end of the crimping operation. For this purpose the crimping device of the invention comprises a diaphragm. The diaphragm of the invention is provided with a plurality of jaws. A variation of a spacing of the jaws relative to a center of the diaphragm makes it possible to modify an opening diameter of said diaphragm. For this, each jaw of the diaphragm is provided with guide means. The guiding means are for example formed by rails along which the jaws slide, so as to approach or move away from the center of the diaphragm. Moreover, by modifying the number of jaws forming the diaphragm, it is possible to modify a section of said diaphragm. Thus, the higher the number of jaws, the more the section of the corresponding diaphragm tends to a circular section. And the more the section of the diaphragm is circular and the crimps made with such a diaphragm are sealed.

Ainsi, pour un dispositif de sertissage de l'invention muni d'un nombre de mors donné, on peut sertir des gaines de plusieurs diamètres en faisant varier le diamètre d'ouverture du diaphragme, en éloignant ou rapprochant les mors du centre du diaphragme. Et en modifiant un nombre de mors du dispositif de l'invention, on peut obtenir des diaphragmes couvrant chacun une gamme différente de diamètres de gaines, de manière à permettre un sertissage étanche pour tous les diamètres de gaines existants.Thus, for a crimping device of the invention provided with a given number of jaws, sheaths of several diameters can be crimped by varying the aperture diameter of the diaphragm, by moving the jaws away from or closer to the center of the diaphragm. And by modifying a number of jaws of the device of the invention, one can obtain diaphragms each covering a different range of diameters of sheaths, so as to allow tight crimping for all diameters of existing sheaths.

Dans un exemple de réalisation de l'invention, les mors ont une section triangulaire. Une section du dispositif de l'invention est donc polygonale et non circulaire. Une gaine d'un câble électrique et un fût d'un contact avant sertissage ont généralement une section circulaire. Après sertissage du fût sur la gaine au moyen du dispositif de l'invention, le fût a une section polygonale à l'endroit du sertissage. Il est donc nécessaire de tenir compte, avant de procéder à un sertissage, des tolérances après sertissage de chaque fût. Chaque fût présente une tolérance comprise entre un diamètre minimum et un diamètre maximum. Si le diamètre imposé au fût par le sertissage est inférieur au diamètre minimum, le fût risque de se rompre. et le câble sera fragilisé. Si le diamètre imposé par la gaine logée dans le fût est supérieur au diamètre maximum, le fût ne sera pas assez restreint et l'étanchéité peut ne pas être assurée.In an exemplary embodiment of the invention, the jaws have a triangular section. A section of the device of the invention is therefore polygonal and non-circular. A sheath of an electrical cable and a shank of a crimp contact are generally circular in section. After crimping the barrel on the sheath using the device of the invention, the barrel has a polygonal section at the crimping point. It is therefore necessary to take into account, before crimping, tolerances after crimping each drum. Each drum has a tolerance between a minimum diameter and a maximum diameter. If the diameter imposed on the barrel by crimping is less than the minimum diameter, the barrel may break. and the cable will be weakened. If the diameter imposed by the sheath housed in the barrel is greater than the maximum diameter, the barrel will not be restricted enough and the seal may not be ensured.

Ainsi, le diamètre d'ouverture du diaphragme à la fin du sertissage du fût autour de la gaine doit tenir compte de ces tolérances pour assurer l'intégrité et l'étanchéité de la connexion.Thus, the opening diameter of the diaphragm at the end of crimping the drum around the sheath must take into account these tolerances to ensure the integrity and tightness of the connection.

Dans l'invention, il est possible notamment de jouer sur le nombre de mors du diaphragme pour respecter les exigences de tolérances. On peut donc adapter une géométrie de l'ouverture du diaphragme à un rayon du fût le plus petit que l'on souhaite sertir avec ce dispositif de sertissage, en modifiant le nombre de mors formant le diaphragme, et donc un diamètre d'ouverture minimum dudit diaphragme.In the invention, it is possible in particular to play on the number of jaws of the diaphragm to meet the requirements of tolerances. It is therefore possible to adapt a geometry of the aperture of the diaphragm to a radius of the smallest drum that one wishes to crimp with this crimping device, by modifying the number of jaws forming the diaphragm, and therefore a minimum opening diameter. said diaphragm.

D'une manière générale, le fût une fois serti sur la gaine du câble a une section polygonale.In general, the barrel once crimped on the cable sheath has a polygonal section.

Dans un exemple de réalisation particulier de l'invention, le diaphragme comporte douze mors. La section du fût serti sur la gaine a alors une forme dodécagonale.In a particular embodiment of the invention, the diaphragm comprises twelve jaws. The section of the barrel crimped on the sheath then has a dodecagonal shape.

Dans un autre exemple de réalisation de l'invention, le diaphragme comportant huit mors. La section du fût serti sur la gaine a alors une forme octogonale.In another embodiment of the invention, the diaphragm comprising eight jaws. The section of the barrel crimped on the sheath then has an octagonal shape.

Dans un exemple de réalisation particulier de l'invention, on peut utiliser des mors ronds. Par mors ronds, on entend un mors ayant une section triangulaire, mais dont au moins un côté a une extrémité arrondie. Un rayon de courbure d'une extrémité arrondie de chacun des mors ronds est dirigé vers un centre du diaphragme. Ainsi, en position fermée, c'est-à-dire pour un diamètre d'ouverture minimum du diaphragme, la section du diaphragme est circulaire. Ce diamètre correspond au diamètre minimal que l'on peut sertir avec un tel dispositif de sertissage. Le sertissage obtenu avec des diamètres proches de ce diamètre d'ouverture minimum est parfaitement étanche. La section du fût, serti sur une gaine ayant un diamètre proche du diamètre minimum d'ouverture du diaphragme, est circulaire. Pour des diamètres de gaines à sertir s'éloignant de ce diamètre minimum d'ouverture, la section du diaphragme a une forme polygonale avec des angles arrondis. La section du fût serti sur une gaine dans un tel cas suit un contour interne de l'ouverture du diaphragme. Ainsi, la section du fût serti sur la gaine a une forme polygonale à angles arrondis.In a particular embodiment of the invention, it is possible to use round jaws. By round jaws is meant a jaw having a triangular section, but at least one side has a rounded end. A radius of curvature of a rounded end of each of the round jaws is directed to a center of the diaphragm. Thus, in the closed position, that is to say for a minimum aperture diameter of the diaphragm, the section of the diaphragm is circular. This diameter corresponds to the minimum diameter that can be crimped with such a crimping device. Crimping obtained with diameters close to this minimum opening diameter is perfectly sealed. The section of the barrel, crimped on a sheath having a diameter close to the minimum aperture diameter of the diaphragm, is circular. For diameters of crimp sleeves moving away from this minimum opening diameter, the diaphragm section has a polygonal shape with rounded corners. The section of the barrel crimped on a sheath in such a case follows an inner contour of the aperture of the diaphragm. Thus, the section of the barrel crimped on the sheath has a polygonal shape with rounded corners.

Une modification du diamètre d'ouverture du diaphragme peut être commandée par un dispositif de commande par engrenages. Par exemple, les engrenages permettent de faire coulisser les mors sur les rails leur servant de moyens de guidage. Il est également possible d'utiliser un dispositif de commande mécanique traditionnel, comportant par exemple des cames.A change in aperture diameter of the diaphragm can be controlled by a gear controller. For example, the gears allow the jaws to slide on the rails serving as guiding means. It is also possible to use a traditional mechanical control device, comprising for example cams.

Dans un exemple de réalisation particulier de l'invention, on prévoit de munir le dispositif de sertissage de l'invention de moyens de contrôle d'une qualité du sertissage. C'est à dire des moyens permettant de vérifier que le sertissage réalisé correspond bien au sertissage attendu. Les moyens de contrôle de la qualité du sertissage comportent par exemple des capteurs de mesure d'effort. Chaque mors du diaphragme peut ainsi être muni d'un capteur de mesure d'effort.In a particular embodiment of the invention, provision is made to provide the crimping device of the invention with means for controlling a crimping quality. That means means for verifying that the crimping achieved corresponds to the crimping expected. The means for controlling the quality of the crimping comprise, for example, force measurement sensors. Each jaw of the diaphragm can thus be provided with a force measurement sensor.

Avant une utilisation d'un dispositif de sertissage de l'invention, on entre en mémoire dans un processeur des données de références. Ces données de références peuvent varier en fonction notamment du matériau formant le fût du contact à sertir sur la gaine. En effet, selon le matériau utilisé pour réaliser le fût, l'effort nécessaire pour déplacer les mors, et donc écraser le fût sur la gaine, sera différent. Les données de références comportent différentes valeurs d'effort pour modifier le diamètre d'ouverture du diaphragme depuis le diamètre maximum d'ouverture jusqu'au diamètre minimum. Les données de références comportent également les valeurs des déplacements correspondants attendus des mors, pour chaque valeur d'effort. On obtient ainsi dans une mémoire de données une caractéristique de sertissage de référence effort/déplacement. Cette caractéristique de sertissage sert par la suite de base de comparaison au processeur pour contrôler la qualité d'un sertissage réalisé au moyen du dispositif de l'invention.Before using a crimping device of the invention, reference data is entered into a processor. These reference data may vary depending in particular on the material forming the barrel of the crimp contact on the sheath. Indeed, depending on the material used to make the barrel, the effort required to move the jaws, and thus crush the barrel on the sheath, will be different. The reference data includes different force values for changing the aperture diameter of the diaphragm from the maximum aperture diameter to the minimum diameter. The reference data also includes the values of the corresponding displacements expected of the jaws, for each value of effort. This gives a data memory a crimp characteristic reference effort / displacement. This crimping feature is subsequently used as a basis of comparison with the processor to control the quality of crimping performed by means of the device of the invention.

Ainsi, à la fin d'un sertissage d'un fût d'un diamètre donné et dans un matériau donné sur une gaine d'un câble électrique d'un diamètre donné, le processeur vérifie, en fonction de l'effort exercé sur le diaphragme, si le déplacement des mors obtenu correspond au déplacement attendu. Le processeur compare les valeurs fournies d'une part par le capteur d'effort et d'autre part par le capteur de déplacement, avec les valeurs correspondantes sur la caractéristique de sertissage. Si les valeurs fournies par les capteurs sont identiques aux valeurs attendues d'après la caractéristique de référence, le sertissage est de bonne qualité. L'étanchéité de la connexion est assurée. A l'inverse, si pour un effort donné le déplacement des mors est supérieur au déplacement attendu, la connexion peut ne pas être parfaitement étanche, ou la connexion peut avoir été endommagée. Par exemple, un brin du câble électrique peut avoir été sectionné avant ou au moment du sertissage étanche. La résistance du câble à la compression par le fût est donc moindre que celle attendue. Ainsi, le déplacement obtenu pour un effort donné est plus important que celui attendu.Thus, at the end of crimping a barrel of a given diameter and in a given material on a sheath of an electric cable of a given diameter, the processor checks, as a function of the force exerted on the diaphragm, if the movement of the jaws obtained corresponds to the expected displacement. The processor compares the values provided on the one hand by the force sensor and on the other hand by the displacement sensor, with the corresponding values on the crimping characteristic. If the values provided by the sensors are identical to the expected values according to the reference characteristic, the crimping is of good quality. sealing connection is assured. Conversely, if for a given effort the displacement of the jaws is greater than the expected displacement, the connection may not be perfectly sealed, or the connection may have been damaged. For example, a strand of the electrical cable may have been cut before or at the time of crimping. The resistance of the cable to compression by the barrel is therefore less than expected. Thus, the displacement obtained for a given effort is greater than that expected.

Il est possible de coupler une action du dispositif de sertissage étanche à une action d'un dispositif de sertissage électrique. Par sertissage électrique, on entend le sertissage du fût du contact sur l'âme du câble. Par exemple, un dispositif de commande du diamètre d'ouverture du diaphragme peut également actionner le dispositif de sertissage électrique. Ainsi, on permet un sertissage simultané ou quasi simultané du fût sur la gaine d'une part et sur l'âme du câble d'autre part. Ce double sertissage simultané permet notamment de diminuer les risques de déplacement du fût le long du câble électrique entre le sertissage électrique et le sertissage étanche. Un tel déplacement est par exemple à l'origine de la rupture d'un ou plusieurs brins du câble. Aussi, en réalisant un double sertissage simultané, on diminue les risques de casse du câble.It is possible to couple an action of the sealed crimping device to an action of an electrical crimping device. By electrical crimping is meant crimping the barrel of the contact on the core of the cable. For example, a diaphragm aperture diameter control device may also operate the electrical crimping device. Thus, simultaneous or almost simultaneous crimping of the barrel on the sheath on the one hand and on the core of the cable on the other hand is allowed. This simultaneous double crimping makes it possible in particular to reduce the risk of movement of the barrel along the electrical cable between the electrical crimping and the crimping tight. Such displacement is for example the origin of the breakage of one or more strands of the cable. Also, by performing a simultaneous double crimping, it reduces the risk of breakage of the cable.

L'invention a donc pour objet un dispositif de sertissage d'un fût selon la revendication 1.The invention therefore relates to a device for crimping a drum according to claim 1.

Selon un exemple particulier de réalisation de l'invention, le diaphragme est formé de mors, chaque mors ayant une section de forme globalement triangulaire. Par section de forme globalement triangulaire on entend une section a trois côtés formés par trois droites, mais également une section à trois côtés dont au moins un des côtés a une extrémité arrondie.According to a particular embodiment of the invention, the diaphragm is formed of jaws, each jaw having a generally triangular shape section. By section of generally triangular shape is meant a section with three sides formed by three lines, but also a section with three sides, at least one of the sides has a rounded end.

L'invention concerne également un fût d'un contact serti sur une gaine d'un câble, caractérisé en ce que le fût a une section de forme polygonale.The invention also relates to a barrel of a contact crimped on a sheath of a cable, characterized in that the barrel has a section of polygonal shape.

L'invention concerne également un fût d'un contact serti sur une gaine d'un câble, caractérisé en ce que le fût a une section de forme circulaire.The invention also relates to a barrel of a contact crimped on a sheath of a cable, characterized in that the barrel has a circular section.

L'invention sera mieux comprise à la lecture de la description qui suit et à l'examen des figures qui l'accompagnent. Celles-ci ne sont présentées qu'à titre indicatif et nullement limitatif de l'invention. Les figures montrent :

  • Figure 1 : Une représentation générale d'un câble à l'endroit d'une connexion et d'un dispositif de sertissage de l'invention ;
  • Figure 2 : Une représentation schématique d'un dispositif de sertissage selon un exemple de réalisation de l'invention ;
  • Figure 3 : Une vue de face d'un dispositif de sertissage selon un exemple de réalisation de l'invention ;
  • Figures 4a et 4b : Deux vues de face d'un dispositif de sertissage selon un autre exemple de réalisation de l'invention.
The invention will be better understood on reading the description which follows and on examining the figures which accompany it. These are presented only as an indication and in no way limitative of the invention. The figures show:
  • Figure 1: A general representation of a cable at the location of a connection and a crimping device of the invention;
  • Figure 2: A schematic representation of a crimping device according to an exemplary embodiment of the invention;
  • Figure 3: A front view of a crimping device according to an exemplary embodiment of the invention;
  • Figures 4a and 4b: Two front views of a crimping device according to another embodiment of the invention.

Sur la figure 1, est représenté un dispositif de sertissage 100 de l'invention. Le dispositif 100 encadre partiellement un fût 301 d'un contact 300. Dans le fût 300 est logé un câble 200 électrique. Une âme 202 du câble 200 est logée à l'endroit d'une extrémité fermée 302 du fût 300. Des parois internes 303 de l'extrémité fermée 302 du fût 301 sertissent l'âme 202 du câble 200. Une portion du câble 200, munie de la gaine 201, est logée dans le fût 301 à l'endroit d'une extrémité ouverte 304 du fût 300.In Figure 1, there is shown a crimping device 100 of the invention. The device 100 partially frames a shaft 301 of a contact 300. In the shaft 300 is housed an electric cable 200. A core 202 of the cable 200 is housed at the location of a closed end 302 of the barrel 300. Internal walls 303 of the closed end 302 of the barrel 301 crimp the core 202 of the cable 200. A portion of the cable 200, provided with the sheath 201, is housed in the barrel 301 at the location of an open end 304 of the barrel 300.

Le dispositif de sertissage 100 de l'invention doit permettre de sertir des parois internes 305 de l'extrémité ouverte 304 du fût 301 contre la gaine 201, afin d'assurer une étanchéité de la connexion entre le câble 200 et le contact 300.The crimping device 100 of the invention must make it possible to crimp internal walls 305 of the open end 304 of the barrel 301 against the sheath 201, in order to seal the connection between the cable 200 and the contact 300.

Le dispositif de sertissage 100 selon l'invention peut s'adapter à différents diamètres de câbles 200 et de fûts 300. C'est-à-dire qu'un même dispositif de sertissage 100 peut permettre un sertissage étanche de différents diamètres de fûts 300 et de câbles 200. Pour cela, le dispositif 100 de sertissage de l'invention comporte un diaphragme 101 (figure 2).The crimping device 100 according to the invention can be adapted to different diameters of cables 200 and drums 300. That is to say, the same crimping device 100 can allow tight crimping of different drum diameters 300 and cables 200. For this, the crimping device 100 of the invention comprises a diaphragm 101 (Figure 2).

Sur la figure 2 est représenté un exemple de réalisation du dispositif 100 de sertissage de l'invention. Le diaphragme 101 est formé de huit mors 102. Un déplacement des mors 102 en direction d'un centre C du diaphragme 101 permet de diminuer un diamètre d d'ouverture dudit diaphragme 101. Inversement, en éloignant les mors 102 du centre C du diaphragme 101, on augmente le diamètre d'ouverture d du diaphragme 101. Selon le diamètre d'ouverture d du diaphragme 101, on peut sertir des fûts de différents diamètres sur des câbles de différents diamètres.In Figure 2 is shown an embodiment of the crimping device 100 of the invention. The diaphragm 101 is formed of eight jaws 102. A displacement of the jaws 102 towards a center C of the diaphragm 101 makes it possible to reduce an opening diameter of said diaphragm 101. Conversely, by moving the jaws 102 away from the center C of the diaphragm 101, the opening diameter d of the diaphragm 101 is increased. Depending on the opening diameter d of the diaphragm 101, drums of different diameters can be crimped onto cables of different diameters.

Dans l'exemple présenté à la figure 2, un dispositif de commande 103 du diamètre d'ouverture d du diaphragme 101 permet de modifier selon des besoins d'un utilisateur le diamètre d'ouverture d du diaphragme 101. Pour cela, le dispositif de commande 103 actionne un dispositif 104 à cames. Le dispositif 104 à cames est formé d'un cylindre 110 creux dans lequel sont logés les mors 102 du diaphragme 101. Un contour interne du cylindre 110 est muni de quatre cames hautes 105 disposées régulièrement sur un pourtour circulaire du cylindre 110. Une face externe 106 de quatre premiers mors 102 est munie d'un bossage 107 venant en contact avec une came haute 105. Le contour interne du cylindre 110 est également muni de quatre cames basses (non visibles sur la figure 2) disposées régulièrement sur le pourtour circulaire du cylindre 110. Les cames basses sont disposées en quinconces avec les cames hautes 105. Une face externe 106 de chacun des quatre autres mors 102 est munie d'un bossage 111 venant en contact avec une came basse. Les mors 102 munis d'un bossage 107 à l'endroit d'une extrémité haute sont alternés avec les mors 102 munis d'un bossage 111 à l'endroit d'une extrémité basse. Ainsi, une came 105 du dispositif 104 à cames permet de déplacer simultanément deux mors 102 accolés.In the example shown in FIG. 2, a control device 103 of the aperture diameter d of the diaphragm 101 makes it possible to modify, according to the needs of a user, the aperture diameter d of the diaphragm 101. this, the controller 103 operates a cam device 104. The cam device 104 is formed of a hollow cylinder 110 in which are housed the jaws 102 of the diaphragm 101. An inner contour of the cylinder 110 is provided with four high cams 105 arranged regularly on a circular periphery of the cylinder 110. An outer face 106 of four first jaws 102 is provided with a boss 107 coming into contact with a high cam 105. The inner contour of the cylinder 110 is also provided with four low cams (not visible in Figure 2) arranged regularly around the circular periphery of the cylinder. cylinder 110. The low cams are arranged in staggered rows with the high cams 105. An outer face 106 of each of the other four jaws 102 is provided with a boss 111 coming into contact with a low cam. The jaws 102 provided with a boss 107 at the location of a high end are alternated with the jaws 102 provided with a boss 111 at the location of a low end. Thus, a cam 105 of the cam device 104 simultaneously moves two jaws 102 contiguous.

Un actionnement du dispositif de commande 103 permet une rotation du cylindre 104 autour du diaphragme 101, imposant aux mors 102 du diaphragme 101 un déplacement vers le centre C, ou au contraire dans une direction opposée au centre C.An actuation of the control device 103 allows a rotation of the cylinder 104 around the diaphragm 101, imposing the jaws 102 of the diaphragm 101 a displacement towards the center C, or on the contrary in a direction opposite to the center C.

Le dispositif de commande 103 est par exemple un dispositif électronique permettant de commander à distance la rotation du cylindre 104 vers la gauche G ou vers la droite D, afin d'augmenter ou de diminuer le diamètre d'ouverture d du diaphragme 101. Il est possible de prévoir que le dispositif de commande 103 puisse également actionner un dispositif de sertissage électrique (non représenté) de l'extrémité fermée 302 du fût 300 sur la partie dénudée 202 du câble 200. Une touche SE spécifique peut être prévue à cet effet sur le dispositif 103 de commande.The control device 103 is for example an electronic device for remotely controlling the rotation of the cylinder 104 to the left G or to the right D, in order to increase or decrease the opening diameter d of the diaphragm 101. It is it is possible to provide that the control device 103 can also actuate an electric crimping device (not shown) of the closed end 302 of the barrel 300 on the stripped portion 202 of the cable 200. A specific key SE can be provided for this purpose on the control device 103.

Dans un exemple de réalisation particulier de l'invention, et tel que cela est représenté à la figure 3, les mors 102 du diaphragme 101 ont une section triangulaire à faces planes. C'est à dire que chaque côté de la section triangulaire est droit. Une ouverture 108 du diaphragme 101 a donc une section polygonale. Or, la gaine 201 du câble 200 à sertir et le fût 301 ont une section circulaire. Un diamètre final du fût 301 à l'endroit du sertissage autour de la gaine 201 varie donc d'un point P1 à un autre point P2 du sertissage. Cependant, un diamètre maximum dmax et un diamètre minimum dmin du fût 301 à l'endroit du sertissage doivent rester dans une gamme de tolérances du fût. Selon les tolérances du fût à sertir, on peut prévoir un diaphragme 101 avec un nombre de mors 102 plus ou moins grand.In a particular embodiment of the invention, and as shown in Figure 3, the jaws 102 of the diaphragm 101 have a triangular section with flat faces. That is, each side of the triangular section is straight. An opening 108 of the diaphragm 101 thus has a polygonal section. However, the sheath 201 of the cable 200 to be crimped and the shaft 301 have a circular section. A final diameter of the barrel 301 at the crimping location around the sheath 201 thus varies from one point P1 to another point P2 of the crimping. However, a maximum diameter dmax and a diameter minimum dmin of the barrel 301 at the crimping point must remain within a range of tolerances of the barrel. Depending on the tolerances of the crimp shaft, it is possible to provide a diaphragm 101 with a number of jaws 102 larger or smaller.

Sur les figures 4a et 4b est représenté un autre exemple de réalisation du diaphragme 101 de l'invention. Une extrémité d'un côté 109 de la section de forme triangulaire de chaque mors 102 est arrondie. Un rayon de courbure de l'extrémité arrondie est dirigé vers le centre C du diaphragme 101. Ainsi, comme cela est représenté sur la figure 4b pour un diamètre d'ouverture faible du diaphragme 101, la section de l'ouverture 108 est circulaire. Le sertissage obtenu pour cette section circulaire est parfaitement étanche, puisqu'il oblige le fût 301 à suivre un contour de la gaine 201.FIGS. 4a and 4b show another embodiment of the diaphragm 101 of the invention. An end of one side 109 of the triangular section of each jaw 102 is rounded. A radius of curvature of the rounded end is directed towards the center C of the diaphragm 101. Thus, as shown in Fig. 4b for a small opening diameter of the diaphragm 101, the section of the opening 108 is circular. The crimping obtained for this circular section is perfectly sealed, since it forces the shaft 301 to follow a contour of the sheath 201.

Pour des diamètres d'ouverture plus grands du diaphragme 101, on obtient un polygone dont les quatre angles sont arrondis comme cela est représenté sur la figure 4a. Une longueur L des parties droites des côtés arrondis 109 des mors 102 augmente avec le diamètre d'ouverture du diaphragme 101.For larger aperture diameters of the diaphragm 101, a polygon is obtained whose four corners are rounded as shown in FIG. 4a. A length L of the straight portions of the rounded sides 109 of the jaws 102 increases with the opening diameter of the diaphragm 101.

Dans un exemple de réalisation particulier de l'invention, on peut munir le dispositif de sertissage 100 de moyens de contrôle du sertissage du fût 301 sur la gaine 201 (non représentés sur les figures). Par exemple, on peut munir chaque mors 102 d'un capteur d'un effort exercé sur ledit mors 102. On peut munir également chaque mors 102 d'un capteur du déplacement du mors 102 par rapport au centre C du diaphragme 101. Ainsi, on peut contrôler le déplacement du mors 102 en fonction de l'effort exercé sur ledit mors 102. Si le déplacement du mors 102 ne correspond pas au déplacement attendu pour l'effort exercé sur le mors 102, le sertissage du fût 301 sur la gaine 201 peut être défaillant.In a particular embodiment of the invention, it is possible to provide the crimping device 100 with means for controlling the crimping of the barrel 301 on the sheath 201 (not shown in the figures). For example, each jaw 102 may be provided with a sensor with a force exerted on said jaw 102. It is also possible to provide each jaw 102 with a sensor for moving the jaw 102 relative to the center C of the diaphragm 101. Thus, it is possible to control the displacement of the jaw 102 as a function of the force exerted on said jaw 102. If the displacement of the jaw 102 does not correspond to the displacement expected for the force exerted on the jaw 102, the crimping of the barrel 301 on the sheath 201 may be faulty.

Le dispositif de sertissage de l'invention permet donc de garantir un sertissage étanche du fût d'un contact sur la gaine d'un câble électrique, notamment en complément d'un sertissage électrique du fût sur les brins du câble. La connexion entre le contact et le câble électrique selon l'invention est parfaitement étanche. Un même dispositif de sertissage selon l'invention permet de sertir un grand nombre de fûts de diamètres différents sur des gaines de câbles électriques de diamètre différents.The crimping device of the invention thus makes it possible to guarantee tight crimping of the barrel of a contact on the sheath of an electric cable, in particular in addition to an electrical crimping of the barrel on the strands of the cable. The connection between the contact and the electrical cable according to the invention is perfectly sealed. The same crimping device according to the invention makes it possible to crimp a large number of barrels of different diameters on sheaths of electric cables of different diameters.

Claims (13)

  1. A device (100) for crimping the barrel (301) of a contact (300) onto the sheath (201) of an electrical cable (200), whereby it includes a diaphragm (101) squeezing the barrel against the sheath, said diaphragm being formed of jaws (102), each jaw having a section of globally triangular shape, and characterised in that at least one side (109) of each jaw of triangular section includes a rounded end, whereby the radius curve of the rounded end is directed towards the centre (C) of the diaphragm.
  2. A device in accordance with claim 1, characterised in that the diaphragm includes at least eight jaws (102).
  3. A device in accordance with any of claims 1 to 2, characterised in that the diaphragm includes at least twelve jaws (102).
  4. A device in accordance with any of claims 1 to 3, characterised in that it is fitted with a device (103) to control the diaphragm aperture.
  5. A device in accordance with claim 4, characterised in that the control device also operates a device for the electrical crimping of the contact barrel onto a core (202) of the cable.
  6. A device in accordance with any of claims 1 to 5, characterised in that it is fitted with a means of checking the crimping of the barrel onto the sheath.
  7. A device in accordance with claim 6, characterised in that the means of checking includes sensors of crimping loads as a function of a movement of the jaws.
  8. Use of a crimping device in accordance with any of claims 1 to 7, for the sealing crimping of a barrel (301) of a contact (300) onto the sheath (201) of a cable (200).
  9. Use in accordance with claim 8, so that that the barrel has a section of polygonal shape.
  10. Use in accordance with any of claims 8 to 9, so that the barrel has a section of octagonal shape.
  11. Use in accordance with any of claims 8 to 9, so that the barrel has a section of dodecagonal shape.
  12. Use in accordance with any of claims 9 to 11, so that the angles of the polygonal section are rounded.
  13. Use in accordance with claim 8, so that the barrel has a section of circular shape.
EP04300842A 2003-12-11 2004-12-02 Crimp device of a contact to a cable Not-in-force EP1542322B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0351027 2003-12-11
FR0351027A FR2863785B1 (en) 2003-12-11 2003-12-11 DEVICE FOR CRIMPING A CONTACT ON A CABLE

Publications (2)

Publication Number Publication Date
EP1542322A1 EP1542322A1 (en) 2005-06-15
EP1542322B1 true EP1542322B1 (en) 2006-08-02

Family

ID=34508777

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04300842A Not-in-force EP1542322B1 (en) 2003-12-11 2004-12-02 Crimp device of a contact to a cable

Country Status (7)

Country Link
US (1) US7418851B2 (en)
EP (1) EP1542322B1 (en)
AT (1) ATE335295T1 (en)
CA (1) CA2486823C (en)
DE (1) DE602004001744T2 (en)
ES (1) ES2268599T3 (en)
FR (1) FR2863785B1 (en)

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US7762804B1 (en) * 2004-12-17 2010-07-27 Interface Associates, Inc. Balloon catheter folding and wrapping devices and methods
US7461448B2 (en) 2005-08-17 2008-12-09 Simon Schwartzman Crimping tool with quick-change crimp head for sealing and electrically crimping electrical contacts to insulated wire
US7942847B2 (en) 2005-12-16 2011-05-17 Interface Associates, Inc. Multi-layer balloons for medical applications and methods for manufacturing the same
JP6182367B2 (en) * 2013-06-19 2017-08-16 古河電気工業株式会社 Crimp connection structure, wire harness, terminal crimping apparatus, and terminal crimping method
CN106541155A (en) * 2017-01-10 2017-03-29 苏州迈特科技有限公司 A kind of suitable high speed rotates the main shaft grasping system of turning
WO2019152689A2 (en) 2018-01-31 2019-08-08 Abb Schweiz Ag Crimping tool with wireless communication system
CN115673130A (en) * 2021-07-28 2023-02-03 苏州医本生命科技有限公司 Seal cutting equipment, seal device and processing method

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US2409549A (en) * 1944-04-21 1946-10-15 Atlas Powder Co Blasting cap crimper
NL262565A (en) * 1960-03-21
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AT374706B (en) * 1982-06-07 1984-05-25 Haemmerle Ag METAL BENDING METHOD AND BENDING DEVICE FOR EXERCISING THE METHOD
SE441484B (en) * 1984-02-27 1985-10-07 Pressmaster Tool Ab KLEMVERKTYG
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GB9901641D0 (en) * 1999-01-26 1999-03-17 Raychem Ltd Crimping composite electrical insulators
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DE10060165A1 (en) * 2000-12-04 2002-06-20 Rennsteig Werkzeuge Gmbh Adjustment and setting device for crimping tongs, has adjusting spindle for moving curved body holding arm part
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US7021114B2 (en) * 2004-04-16 2006-04-04 Boston Scientific Scimed, Inc. Stent crimper

Also Published As

Publication number Publication date
US7418851B2 (en) 2008-09-02
US20050136736A1 (en) 2005-06-23
FR2863785A1 (en) 2005-06-17
CA2486823C (en) 2010-11-30
CA2486823A1 (en) 2005-06-11
ES2268599T3 (en) 2007-03-16
DE602004001744D1 (en) 2006-09-14
EP1542322A1 (en) 2005-06-15
ATE335295T1 (en) 2006-08-15
FR2863785B1 (en) 2006-04-28
DE602004001744T2 (en) 2007-10-04

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