EP3590152A1 - Connection device to be crimped onto an end section of cable, comprising a conducting sheath provided with a wall separating two housings - Google Patents
Connection device to be crimped onto an end section of cable, comprising a conducting sheath provided with a wall separating two housingsInfo
- Publication number
- EP3590152A1 EP3590152A1 EP18711390.7A EP18711390A EP3590152A1 EP 3590152 A1 EP3590152 A1 EP 3590152A1 EP 18711390 A EP18711390 A EP 18711390A EP 3590152 A1 EP3590152 A1 EP 3590152A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- conductive
- longitudinal
- cable
- envelope
- sheath
- 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.)
- Granted
Links
- 239000011248 coating agent Substances 0.000 claims description 29
- 238000000576 coating method Methods 0.000 claims description 29
- 239000004020 conductor Substances 0.000 claims description 25
- 238000002788 crimping Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 11
- 210000003298 dental enamel Anatomy 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000001747 exhibiting effect Effects 0.000 abstract 1
- 239000011800 void material Substances 0.000 abstract 1
- 238000004804 winding Methods 0.000 description 6
- 239000010410 layer Substances 0.000 description 5
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- 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
- H01R4/20—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 using a crimping sleeve
- H01R4/203—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 using a crimping sleeve having an uneven wire-receiving surface to improve the contact
-
- 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
- H01R4/20—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 using a crimping sleeve
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
- H01R11/12—End pieces terminating in an eye, hook, or fork
-
- 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
- H01R4/186—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 using a body comprising a plurality of cable-accommodating recesses or bores
Definitions
- Connecting device to be crimped on a terminal cable section comprising a conductive envelope provided with a wall separating two housings
- the invention relates to connection devices to be crimped on a terminal section of electric cable.
- the conductive member has a tubular portion while the one-piece insert has a sleeve disposed within the tubular portion.
- the sleeve is configured to receive the cable end section and more precisely the aluminum core of this terminal section.
- the sleeve comprises a plurality of perforations and is made of a material that is harder than aluminum so that the sleeve is able to deform the core of the terminal section of the cable during a crimping of the tubular portion and the sleeve on the soul of the terminal section, which is then embedded in the perforations of the sheath.
- connection device is particularly appreciated because it makes it possible to obtain excellent electrical continuity between the connecting device and the core of the aluminum cable, in particular because the incrustation of the aluminum core in the perforations of the sleeve enables to break on the surface of the aluminum core the alumina layer bad conductor of electricity.
- the invention aims to increase the possibilities of use of such a connection device, or at least to improve performance, while maintaining its simplicity, convenience and economy.
- the invention proposes for this purpose a crimp connection device on a terminal section of electric cable, comprising a conductive element having a tubular portion and having a perforated conductive envelope distributed in a predetermined full-hollow pattern, said tubular portion and said envelope being configured so that the envelope can be disposed inside the tubular portion with the terminal section disposed inside the envelope and then that the tubular portion and the envelope can be crimped on the terminal section; characterized in that the envelope comprises at least one longitudinal wall separating two separate housings each configured to receive a respective longitudinal portion of said cable end section.
- the envelope delimits at least two housings, separated from each other by a longitudinal wall.
- the wall separating the two housings has a longitudinal orientation, that is to say the same orientation as the portions of the cable end section in the device, offers the advantage of maximizing the contact surface between this wall and the longitudinal portions of the cable end section.
- connection device can be implemented simply, conveniently and economically, in particular with the advantageous characteristics described below.
- connection device according to the invention is suitable, like the aforementioned prior connection device, for a flexible aluminum core electrical cable; and that surprisingly the connection device according to the invention is also able to equip the end of certain cables for which it was thought that a device of this kind did not allow to obtain the required electrical continuity, for example cables commonly referred to as CTC cables or Continuously Transposed Conductors cables.
- cables are used to perform electrical windings, for example to make transformers, and they comprise several conductors each individually isolated, each conductor being generally referred to as a strand.
- connection device to equip one end of such a cable with a connection device, the different strands are separated from each other (the insulating sheath of the cable is removed), then the insulating coating is removed for each strand, which is generally E-mail. Then, a connection device such as a lug is soldered or brazed to the strands whose insulating coating has been removed.
- the invention is based on the observation that contrary to the general opinion that such a cable strand each covered with a layer of insulating coating necessarily required prior removal of the insulating coating, it is in fact possible not to proceed to this operation.
- the invention is also based on the observation that it is possible to remedy the existing incompatibility of the general opinion between such a strand cable each covered with a layer of insulating coating and a crimp connection device such as than the aforementioned prior device.
- the insulating coating has a thickness which is an order of magnitude considerably larger than the thickness of the alumina layer that is formed on the conductive core.
- aluminum cables namely of the order of one tenth of a millimeter for the thickness of the insulating coating layer of material such as enamel and of the order of one nanometer for the alumina layer.
- alumina is a relatively brittle material, and therefore easy to break, while an insulating coating material such as enamel is relatively ductile since it must withstand without breaking the bending that occurs when the cable is rolled up.
- connection device in the connection device according to the invention, it avoids or in any case reduces the risk that a strand of the cable is protected from the wall of the wrapped by another strand.
- connection device According to advantageous characteristics, for the sake of simplicity, convenience and economy of implementation of the connection device according to the invention:
- the envelope comprises at least two said longitudinal walls each forming a sheath defining a said housing, each sheath being adjacent to another sheath in said casing so that the housing of each sheath is separated from the housing of the adjacent sheath by the longitudinal wall this sheath and the longitudinal wall of the adjacent sheath;
- the envelope comprises a said longitudinal wall forming a structure delimiting the two said housings, which are separated from each other by a portion of said longitudinal wall; said longitudinal wall is shaped so that the housings are arranged in at least one row;
- said longitudinal wall is shaped so that the housings are arranged in several adjacent rows;
- each housing extends longitudinally between a first end where the envelope has at least one insertion opening of the respective longitudinal portion of said cable end section, and a second end, opposite to the first end, where the envelope presents a stop configured to limit the depression of the longitudinal portion of the cable end section in the housing;
- said longitudinal wall is a perforated metal sheet in a predetermined pattern, cut and folded;
- said longitudinal wall is a wire wound helically;
- said longitudinal wall is a wire mesh.
- the invention also relates to an assembly comprising a connecting device and an electrical cable comprising a plurality of strands, each of said two housings of the conductive envelope receiving a respective longitudinal portion of a terminal section of said electric cable comprising at least one said strand .
- each strand of said electrical cable is provided with a core of conductive material and an insulating coating covering said conductive core so that the strands are electrically isolated from each other, the conductive envelope being made of a conductive material harder than the material of the insulating coating and the conductive material of the core of each strand, so that after crimping the tubular portion and the conductive envelope on the end section of the electric cable, for each strand, the core of the strand and the conductive envelope are in direct contact;
- the insulation of the strands comprises insulating enamel, while the conductive material of the conductive envelope comprises copper; each strand of the electric cable has a solid core of conductive material;
- each housing can receive at most two so-called superimposed strands
- the tubular portion and the conductive envelope are crimped on the end section of the electric cable, so that the core of each strand comes into direct contact with the conductive envelope, while the conductive envelope comes into direct contact with the conductive element, the strands thus being put in electrical continuity by the conductive envelope and the conductive element.
- FIG. 1 shows schematically in cross section a multi-strand electrical cable, one end must be equipped with a connection device according to the invention so that at this end all the strands of this cable are at the potential of an element to which this end of the cable is to be connected;
- FIG. 2 is an isolated perspective view of a sleeve of a conductive envelope that comprises the connection device according to the invention
- Figure 3 is a view similar to Figure 2, but with the sleeve which is seen from another angle;
- Figure 4 is a side view of the sleeve and a strand of the terminal section of the cable, ready to be inserted into the sleeve;
- Figure 5 is a view similar to Figure 4, but in perspective and with the strand of the cable end section which is inserted into the sleeve;
- FIG. 6 is a perspective view of the conductive envelope of the connection device according to the invention and of a conductive element that this connection device further comprises, the envelope comprising a plurality of sleeves identical to that illustrated on the FIG. 2 to 5, and being ready to be inserted with the cable terminal section in a tubular portion of the conductive element, each sheath receiving a strand of the terminal section of the cable;
- Figure 7 is a view similar to Figure 6, the conductive envelope receiving the end portion of the cable and being disposed in the tubular portion;
- Figures 8 and 9 are views similar to Figure 7, respectively showing in perspective and side view of the connection device after crimping;
- FIG. 10 is a detail of a section of the zone of the connection device which contains the terminal portion of the cable, this section being oriented transversely and taken in the zone deformed by crimping, in the middle of this zone in the longitudinal direction;
- Figures 1 1 and 12 are views similar to Figures 3 and 5 respectively, but for a variant of the sleeves of the conductive envelope;
- Figures 13 and 14 are respectively perspective and end views of a structure that includes a variant of the conductive envelope
- Figures 15 and 16 are views similar to Figures 14 and 13 respectively, but with strands of a terminal cable section received in the structure;
- Figures 17 to 20 are views similar to Figures 13 to 16 respectively, but for another variant of the conductive envelope.
- FIG. 1 schematically illustrates in cross section an electric cable 10, one end of which must be equipped with a connection device 20 according to the invention, as shown in FIGS. 6 to 9.
- the electrical cable 10 comprises a plurality of strands 1 1, here six, and an insulating sheath 12 enveloping the strands January 1.
- the electric cable 10 further comprises an internal partition 13 extending inside the insulating sheath 12.
- the strands 1 1 are all identical and each comprise a core 14 of conductive material and an insulating coating 15 covering the core 14, so that the strands 1 1 are electrically isolated from each other.
- the conductive material is copper and the material of the insulating coating 15 is insulating enamel.
- connection device 20 to be installed at one end of the cable 10 serves to put all the strands 1 1 of this cable to the potential of an element to which this end of the cable must be connected. For this, as explained below, at the end concerned the device 20 puts in electrical continuity the strands 1 1 of the cable 10.
- the strands 1 1 are arranged in two rows located on either side of the internal partition 13.
- the cable 10 is here a winding cable, intended to be wound on a winding support.
- the subdivision of the cable 10 into a plurality of strands 1 1 isolated from each other allows, in known manner, to limit the increase in impedance of the cable 10 due to the "skin" effect occurring when the cable 10 is traveled by a high frequency current. So that each strand 1 1 (which has the same length as the other strands 1 1) can do the same number of turns as the other strands 1 1 once the cable 10 wound on the winding support, the strands 1 1 are by construction of the cable 10 continuously transposed along this cable, from one row to another. Such a cable 10 is commonly referred to as Continuously Transposed Conductors.
- the strand 1 1 that is seen at the top right in Figure 1 is transposed above the strand 1 1 that is seen in the upper left while the strand 1 1 that we see in bottom left is transposed below the strand 1 1 that we see lower right; And so on.
- the insulating sheath 12 is here made of insulating paper. Its nature determines in particular the dielectric properties of the cable 10.
- Each strand 1 like its conductive core 14, has in section a flattened shape, here substantially rectangular, and has two large faces 16 opposite and two small opposite faces 17 extending from one to the other of the large faces 16 .
- connection device 20 is here a crimping lug comprising a conductive element 31 and a conductive envelope 21 (FIGS. 6 to 9) formed here of a plurality of sheaths 22 which are identical here.
- Each sleeve 22 is configured to receive a strand 1 1 of the terminal section of the stripped cable 10, that is to say that the insulating sheath 12 has been removed from the terminal section.
- Figures 2 and 3 show in detail a sleeve 22.
- Each sheath 22 is an elongated tubular element of substantially rectangular cross section comprising a wall 23 of conductive material delimiting an internal space, or housing 24, designed to receive a strand 1 1 of the terminal section of the cable 10.
- the conductive material of the wall 23 is here a cuprous material, more precisely brass.
- the wall 23 comprises two main longitudinal portions 26 extending opposite and two lateral longitudinal portions 27 extending opposite and from one to the other of the main longitudinal portions 26.
- the main longitudinal portions 26 form the long sides of the rectangle while the longitudinal longitudinal portions 27 form the short sides of the rectangle.
- the sheath 22 extends longitudinally between a first end 18 and a second end 19.
- the sleeve 22 has an opening 25 for introducing a strand 1 1 extending from one to the other of the main longitudinal portions 26 and lateral longitudinal portions 27, and opening into the housing 24 .
- the opening 25 is delimited by a portion 29 of the wall 23 flared outwards, this flared portion 29 acting as a guide to facilitate the insertion of the strand 1 1 of the terminal section of the cable 10.
- the core 14 of the strand 1 1 is massive, that is to say, it is a single block (and not composed of a plurality of small son).
- the sleeve 22 has a stop 38, formed by an extension of a portion of the wall 23 projecting here from a longitudinal main portions 26 and extending opposite the housing 24.
- the perforations 28 are provided on each of the main portions 26 and side 27.
- the perforations 28 are formed on almost the entire sleeve 22, only a portion 30 near the end 18 is devoid of perforations.
- the perforations 28 are arranged in a predetermined regular pattern, here a grid, and all have a predetermined outline, here circular.
- a perforated metal sheet of predetermined thickness in which a blank (not shown) is cut from which the wall 23 is obtained by folding.
- FIGS. 4 and 5 show the sleeve 22 and a strand 1 1 of the terminal section of the cable 10, respectively before and after the insertion of this strand 11 into the sleeve 22.
- the terminal section is first stripped, that is to say that the insulating sheath 12 is removed at this level.
- the strand 1 1 individualized is then disposed in the housing 24 of the sleeve 22, by inserting it through the opening 25, and by pushing it into the housing 24 until it comes into contact with the stop 38.
- the housing 24 has in section a rectangular shape configured such that the strand 1 1, also of substantially rectangular shape, is fitly received in the sheath 22.
- the portion of the strand 1 1 received in the sheath 22 is in contact, or at least in close proximity, with its entire periphery, with each of the main longitudinal and lateral portions 27 of the wall 23, as well as with the abutment 38.
- FIGS. 6 to 9 the conductive element 31 and the conductive envelope 21 that comprises the connection device 20, which is here a crimping lug.
- the conductive element 31 comprises a tubular portion 33 connected to a flat portion 34 by a transition portion 35.
- the tubular portion 33 has an opening located opposite the flat portion 34 and which opens into an internal space of the portion tubular 33.
- the flat portion 34 is a contact area of generally parallelepiped shape. It has an orifice 36 configured to receive a threaded rod belonging to an electrical connection terminal (not shown) for example provided with a support flange. To ensure electrical contact between the terminal and the terminal 20, the flat portion 34 is clamped between the support flange and a nut screwed onto the threaded rod.
- the tubular portion 33 has a constant outer diameter throughout its length.
- the conductive envelope 21 that comprises the connection device 20 has a plurality of housings 24 each delimited by a sleeve 22.
- the conductive envelope 21 is here formed by six sleeves 22.
- the conductive envelope 21 thus comprises as many sleeves 22 as the cable 10 comprises strands 1 1; and comprises as many dwellings 24 as sheaths 22.
- each sheath 22 is close to at least one other sheath 22 so that the housing 24 of each sheath 22 is separated from the housing 24 of the adjacent sheath by the wall 23 of this sleeve 22 and the wall 23 of the sleeve 22 next.
- the end section of the cable 10 is stripped and the strands 11 are introduced into the one after the other in a respective sheath 22 as explained above.
- the end section of the cable 10 provided with the casing 21 formed by the sleeves 22 is then disposed in the tubular portion 33, through the opening, and the tubular portion 33 is crimped, in a known manner, in a crimping device (not shown) having a pair of jaws.
- each sleeve 22 then comes into contact with the strand 1 1 disposed in its housing 24, the material of the coating 15 is incrusted through the perforations 28 to be broken, which allows a direct contact between the core 14 of the strand 1 1 and the sheath 22 and thus a good electrical contact.
- the crimped portion is shaped with a section B.
- Such a crimping section has the advantage of allowing conformity control by simply measuring the thickness of the crimped portion.
- the wall 23 is made of a conductive material harder than the material of the insulating coating 15 and that the conductive material of the core 14 of each strand 1 1.
- each strand 1 1 comes into contact with its entire periphery with each of the main longitudinal 26 and lateral 27 portions of the sleeve 22 in which it is received, the insulating coating 15 is broken over the entire periphery of the strand 1 1, which is favorable to a good electrical contact.
- Figure 10 is a detail of a section of the crimped portion, this section being oriented transversely and taken in the middle of this portion in the longitudinal direction.
- FIG. 10 shows a first contact zone C1 between the core 14A of the strand 1 1A and the main portion 26A of its sheath 22A; a second contact zone C2 between the core 14B of the strand 1 1 B and each of the main portions 26B of its sleeve 22B, which main portions 26B further come into contact with each other; and a third contact zone C3 between the core 14C of the strand 1 1 C and the main portion 26C of its sheath 22C.
- the core 14A of the strand 1 1A is embedded in a perforation 28 of the main portion 26A, which broke the coating 15A and allowed the direct contact between the core 14A and the sheath 22A.
- zone C3 in a similar manner, core 14C of strand 1 1 C has been embedded in a perforation of main portion 26C, which has broken the coating 15C and allowed direct contact between core 14C and the sheath 22C.
- the coating 15B has not only been broken but also driven along the surface of the core 14B of the strand 11B, leaving behind a large part of the core 14B, which is at direct contact of the sheath 22B.
- the section shown in part in FIG. 10 has been taken in an area of particularly large deformations since this section is taken in the middle of the deformed zone in the longitudinal direction.
- the wall 23 has sharp-angled edges which promote the breaking of the coating 15.
- the wall 123 of the sleeve 122 is not obtained from a metal sheet that is perforated and bent but from a wire 39 which is wound in a helix, here according to a predetermined step.
- Each turn of the wire 39 successively has a first straight portion 41, a first curved portion 42, a second straight portion 43 and a second curved portion 44.
- the first straight portions 41 together form one of the main longitudinal portions 126 of the wall 123 while the second straight portions 43 together form the other of the main longitudinal portions 126 of the wall 123.
- the first curved portions 42 together form one of the lateral longitudinal portions 127 of the wall 123, while the second curved portions 44 together form the other of the lateral longitudinal portions 127 of the wall 123.
- the sleeve 122 has a stop 138, formed by an end portion of the wire 39 extending opposite the housing 124.
- the wire 39 defines a helical band opening 40 which extends continuously from the first end 1 18 to the second end 1 19 of the sheath 122.
- the opening 40 opens on either side of the wall 123, that is to say both in the housing 124 and outside the sleeve 122.
- the coating 15 enters the opening 40 and breaks along the wire 39 which can then come into contact with the core 14.
- the sleeves 22 and 122 have a wall 23 or 123 which is perforated in a distributed manner in a predetermined full-hollow pattern.
- the perforations 28 are distributed over the entire wall 23 except on its portion 30 located near the end 18; and the wall 23 is perforated according to the full-hollow pattern of grid arrangement of the perforations 28.
- the opening 40 is distributed over the entire wall 123, which is perforated according to the solid-hollow pattern given by the pitch of the spiral winding of the wire 39 and the width of this wire.
- FIGS. 13 to 16 a structure 222 that includes an envelope 221 which is an alternative embodiment of the envelope 21.
- envelope 221 which is an alternative embodiment of the envelope 21.
- the same reference numerals are added but the number 200 is added.
- the structure 222 is configured to receive four strands 1 1 of the terminal portion of the stripped cable 10.
- the structure 222 is an elongated profiled element extending longitudinally between a first end 218 and a second end 219.
- the structure 222 has a first longitudinal side 47 and a second longitudinal side 48, opposite the first longitudinal side 47.
- the structure 222 comprises a wall 223 with a profile in the form of a straight zigzag, that is to say a zigzag whose branches are parallel and the tips replaced by a segment transverse to the branches.
- the profile of the wall 223 is five branches and thus delimits four housings 224, arranged in a row, each provided to receive a strand 1 1 of the terminal section of the cable 10.
- the wall 223 extends between a first longitudinal edge 49 extending along the first longitudinal side 47 of the structure 222 and a second edge longitudinal 50, opposite the first longitudinal edge 49, extending along the second longitudinal side 48 of the structure 222.
- the wall 223 has first longitudinal portions 45 extending substantially parallel to each other and to the right of each other, and second longitudinal portions 46 extending transversely to the first longitudinal portions 45 and each connecting two first longitudinal portions 45 adjacent .
- the first longitudinal portions 45 each extend from one to the other of the first and second longitudinal sides 47 and 48 of the structure 222.
- the second longitudinal portions 46 each extend along a longitudinal side 47 or 48 respective, two longitudinal portions 46 connected to the same first longitudinal portion 45 respectively extending along one and the other of the longitudinal sides 47 and 48.
- the first longitudinal portion 45 extending from the first longitudinal edge 49 of the wall 223 here forms a first end wall 52, while the first longitudinal portion 45 extending from the second longitudinal edge 50 of the wall 223 forms here a second end wall 53.
- Each housing 224 is delimited by two first longitudinal portions 45 adjacent and by the second longitudinal portion 46 connecting these first two longitudinal portions 45.
- the housing 224 has a longitudinal opening 51 extending opposite the second longitudinal portion 46 defining the housing and opening on the longitudinal side 47 or 48 of the structure 222 opposite this second longitudinal portion 46.
- the openings 51 of the housings 224 open alternately to one of the first and second longitudinal sides 47 or 48 and then to the other of the first and second longitudinal sides 47 or 48 of the structure 222.
- the openings 51 of two housings 224 neighbors of the column respectively open on one and the other of the longitudinal sides 47 and 48 of the structure 222.
- each longitudinal portion 45 has a first face delimiting one of the housings 224 and a second face, opposite the first face, delimiting the adjacent housing 224. The first longitudinal portions 45 thus separate one another from two separate housings 224.
- the structure 222 further has openings 225 each opening into a respective housing 224 and extending from one to the other of the first longitudinal portions 45 delimiting the housing 224, and the second portion longitudinal 46 defining this housing 224, until its opening 51.
- the structure 222 has openings similar to the openings 225.
- abutments similar to the abutment 38 of the sleeve 22 extend opposite the housings 224 to limit the insertion of the strands 1 1 of cable 10.
- the structure 222 also has a plurality of perforations 228 formed in the wall 223 and similar to the perforations 28 formed in the wall 23 of the sheath 22.
- the structure 222 also has a portion 230 without perforations, similar to the portion 30 of the sleeve 22.
- the structure 222 is manufactured in the same way as the sleeve 22, that is to say from a metal sheet which is perforated and bent.
- Figures 15 and 16 show the structure 222 with a strand 1 1 inserted in each housing 224.
- the strands 11 are inserted into the housings 224 through the openings 225 or 51.
- a structure 322 that includes an envelope 321 which is another variant embodiment of the envelope 21.
- the same reference numerals are added but the number 100 is added except for the references 45 to 51 where the number 300 is added.
- the structure 322 is similar to the structure 222, except that the wall 323 has two parts 54 of right zigzag section and a connecting wall 55 connecting the two parts 54.
- Each portion 54 delimits two housings 324 so that the structure 322 has four housings 324 arranged in two adjacent rows, each portion 54 defining two housing 324 adjacent to a row.
- the wall 323 extends between a first longitudinal edge 349 extending along a first longitudinal side 347 of the portion 54 and a second longitudinal edge 350, opposite the first longitudinal edge 349, extending along a second longitudinal side 348 of the portion 54.
- the wall 323 further has, for each portion 54, a first side wall 56 extending transversely to the portion 54 from its first longitudinal edge 349 extending along the first longitudinal side 347; and a second side wall 57 extending transversely portion 54 from its second longitudinal edge 350 extending along the second longitudinal side 348.
- the side wall 56 is configured to close the longitudinal opening of the housing 324 opening on the first longitudinal side 347, that is to say that the wall 56 defines the housing 324.
- the second side wall 57 is configured to close the longitudinal opening of the housing 324 opening on the second longitudinal side 348, that is to say that this wall 57 defines the housing 324.
- the second side wall 57 of one of the parts 54 is connected to the first side wall 56 of the other of the parts 54 so as to form together the junction wall 55.
- the junction wall 55 is located between the two parts 54 and delimits a housing 324 with each of the parts 54.
- a first longitudinal portion 345 separates two adjacent housing 324 of a row.
- Two adjacent housings 324 each belonging to one of the two rows are separated from each other by the junction wall 55 and by a second longitudinal portion 346 which extends along the junction wall 55.
- the structure 322 is replaced by a similar structure but delimiting more than two housings 324 per row, with possibly the side walls 56 and 57 being longer so as to close the openings 351 of several housings 324 of a row.
- the structure 222 is replaced by a similar structure but in which the number of housings such as 224 is different from four, with possibly the first and second longitudinal edges 49 and 50 which extend on the same longitudinal side 47 or 48.
- the conductive envelope 221 or 321 is replaced by a similar envelope but having several structures such as the structure 222 or 322, according to the number of strands 1 1 that includes the cable 10, for example between two and twenty structures 322; or likewise the conductive envelope as 21 is replaced by a similar conductive envelope but having a number of sleeves such as 22 or 122 different from six, for example between five and eighty-four.
- the conductive envelope comprises at least two different structures, for example a sheath 22 or 122 and a structure 222 or 322.
- the wall of the sleeves and / or of the structure is made differently than by a perforated and folded sheet or by a wire wound in a helix, for example by a wire mesh, comprising longitudinally oriented warp yarns and transversely oriented wefts, shaped in a rectangular loop, regularly arranged along the warp threads and secured thereto, or else by a wire mesh made otherwise than with threads, for example by additive manufacturing;
- the conductive envelope is perforated in a solid-hollow pattern different from an arrangement of grid perforations, the width of a wire and its helical winding pitch, or the mesh of a wire mesh, for example an arrangement of staggered perforations;
- the housings such as 24, 124, 224 or 324 have a different rectangular profile, for example circular or oval, in order to receive cable strands having such a section;
- the conductive material of which the envelope is different from brass for example stainless steel, nickel or other copper alloy such as a copper-nickel alloy.
- each housing 24, 124, 224 or 324 is configured to receive a single strand of the cable January 1.
- the housing such as 24, 124, 224 or 324 is configured to receive at most two superimposed strands 1 1, with each strand 1 1 in direct contact with the wall such as 23, 123, 223 or 323.
- the wall such as 23, 123, 223 or 323 has a longitudinal orientation in the connecting device 20, that is to say that it is oriented in the longitudinal direction of the tubular portion 33 of the conductive element such as 31.
- the longitudinal portions of cable received in the envelope such as 21, 221 or 321 are strands comprising a solid core covered with an insulating coating.
- the longitudinal portions are different from such a strand, for example parts of the core of a cable formed by a multitude of thin wires, for example made of aluminum.
Landscapes
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1751642A FR3063392B1 (en) | 2017-02-28 | 2017-02-28 | CONNECTING DEVICE FOR CRIMPING ON A CABLE TERMINAL STRING, COMPRISING A CONDUCTIVE ENCLOSURE WITH A WALL SEPARATING TWO HOUSINGS |
PCT/FR2018/050452 WO2018158533A1 (en) | 2017-02-28 | 2018-02-26 | Connection device to be crimped onto an end section of cable, comprising a conducting sheath provided with a wall separating two housings |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3590152A1 true EP3590152A1 (en) | 2020-01-08 |
EP3590152C0 EP3590152C0 (en) | 2023-08-16 |
EP3590152B1 EP3590152B1 (en) | 2023-08-16 |
Family
ID=59031090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18711390.7A Active EP3590152B1 (en) | 2017-02-28 | 2018-02-26 | Connection device to be crimped onto an end section of cable, comprising a conducting sheath provided with a wall separating two housings |
Country Status (4)
Country | Link |
---|---|
US (1) | US10892567B2 (en) |
EP (1) | EP3590152B1 (en) |
FR (1) | FR3063392B1 (en) |
WO (1) | WO2018158533A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018130973A1 (en) * | 2018-12-05 | 2020-06-10 | Phoenix Contact Gmbh & Co. Kg | Connection element for an electrical conductor |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB555836A (en) * | 1942-03-17 | 1943-09-09 | Crabtree & Co Ltd J A | Improvements in and connected with the terminal ends of electric conductors |
US3955044A (en) * | 1970-12-03 | 1976-05-04 | Amp Incorporated | Corrosion proof terminal for aluminum wire |
US4135296A (en) * | 1977-08-19 | 1979-01-23 | The United States Of America As Represented By The Secretary Of The Air Force | Method of joining a fine wire filament to a connector |
US4317277A (en) * | 1978-09-15 | 1982-03-02 | General Electric Company | Low resistance electric joint between conductive members, at least one member having an insulation coating thereon, and the method of making such joint |
DE3640292A1 (en) * | 1986-11-25 | 1988-06-01 | Klauke Gmbh & Co Gustav | ADAPTER FOR PRESS CONNECTIONS AND METHOD FOR PRODUCING A PRESS CONNECTION IN SECTOR-SHAPED, COMPRESSED CABLE LADDERS |
US6109984A (en) * | 1998-04-23 | 2000-08-29 | Tsou; Eris | Truck trailer cable connector structure |
US7601037B2 (en) * | 2008-01-11 | 2009-10-13 | Hamilton Sundstrand Corporation | Terminal with multiple wire connection |
FR2947960B1 (en) | 2009-07-08 | 2011-09-09 | Mecatraction | CRUSHING CONNECTING DEVICE FOR ELECTRIC CABLE AND METHOD OF MANUFACTURING SUCH A DEVICE |
DE102011077888B4 (en) * | 2011-06-21 | 2016-10-13 | Lisa Dräxlmaier GmbH | Method for assembling a cable |
FR2995459B1 (en) * | 2012-09-07 | 2014-10-10 | Mecatraction | METHOD FOR ASSEMBLING A CONNECTING DEVICE ON A TERMINAL STRIP DENUDE OF AN ELECTRIC CABLE AND ASSEMBLY COMPRISING SUCH A DEVICE ASSEMBLED SOLIDARILY ON SUCH A CABLE TRUNK |
DE102014214416A1 (en) * | 2014-07-23 | 2016-01-28 | Robert Bosch Gmbh | Electrical connection arrangement |
EP3096404A1 (en) * | 2015-05-21 | 2016-11-23 | Delphi Technologies, Inc. | Crimp connection system for electrical cables, comprising a fastening sleeve |
-
2017
- 2017-02-28 FR FR1751642A patent/FR3063392B1/en active Active
-
2018
- 2018-02-26 US US16/489,043 patent/US10892567B2/en active Active
- 2018-02-26 WO PCT/FR2018/050452 patent/WO2018158533A1/en unknown
- 2018-02-26 EP EP18711390.7A patent/EP3590152B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
WO2018158533A1 (en) | 2018-09-07 |
US20200006867A1 (en) | 2020-01-02 |
FR3063392B1 (en) | 2019-04-19 |
EP3590152C0 (en) | 2023-08-16 |
US10892567B2 (en) | 2021-01-12 |
EP3590152B1 (en) | 2023-08-16 |
FR3063392A1 (en) | 2018-08-31 |
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