PT79350B - CONNECTOR FOR ISOLATED ELECTRIC CABLES - Google Patents
CONNECTOR FOR ISOLATED ELECTRIC CABLES Download PDFInfo
- Publication number
- PT79350B PT79350B PT79350A PT7935084A PT79350B PT 79350 B PT79350 B PT 79350B PT 79350 A PT79350 A PT 79350A PT 7935084 A PT7935084 A PT 7935084A PT 79350 B PT79350 B PT 79350B
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- Prior art keywords
- skirt
- cables
- sheath
- crimping
- seals
- Prior art date
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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
- 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
- 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
- H01R4/58—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 characterised by the form or material of the contacting members
- H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/70—Insulation of connections
Landscapes
- Insulated Conductors (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Communication Cables (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
Description
Descrição do objecto do invento que
SOCIÉTÉ D*APPAREILLAGE AUXILIAIRE POUR L*ELECTRICITÉ (S.A.A.E.) Societé Anonyme, francesa, induj trial, com sede em 10, rue Jacquard. Zone Industrielle No.2 27031 EVREUX CEDEX, França, pretende obter em Portugal para: "DISPOSITIVO DE UNIÃO PARA CABOS ELÉCTRICOS ISOLADOS".
0 presente invento refere-se a um disposjL tivo de uniSo para cabos electricos isolados, e, mais particularmente a um dispositivo de uniSo do tipo que compreende uma bainha condutora que possui dois alojamentos opostos para as extremidades descarnadas de dois cabos a ligar, uma saia isoladora que envolve a bainha e juntas de estanqueidade interpostas entre a saia e as extremidades das cintas de isolamento dos cabos, devendo a ligação mecânica entre o dis positivo de uniSo e as extremidades descarnadas dos cabos ser efectuada por cravamento do dispositivo de ligaçSo nas extremidades dos cabos,
Em dispositivos de uniSo deste tipo, conhe eidos, as juntas de estanqueidade sSo colocadas, cada uma, entre a saia e a superfície periférica da cinta de isolamento de um cabo, na extremidade deste. Quando do cravamento, a bainha alonga-se e comprime a junta entre a cinta do cabo e a saia. A figura 1 ilustra um tal dispositivo de uniSo conhje cidoj a parte direita mostra o dispositivo de ligaçSo antes do cravamento, com a bainha 1, a saia 2 e a junta de estanqueidade 3; a parte esquerda mostra o dispositivo de uniSo
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após cravamento, estando a bainha 1 cravada na extremidade descarnada do cabo enquanto que a junta de estanqueidade é comprimida entre a cinta de isolamento do cabo e a saia em consequência do alongamento da bainha.
A estanqueidade dieléctrica efectuada pel junta 3 após cravamento nem sempre é satisfatória. Com efeit para uma mesma junta, esta estanqueidade depende da forma da cinta do cabo, forma que varia conforme os fabricantes. Além disso, no caso de linhas polifásicas, o ajustamento das fase é, por vezes, efectuado por marcas em relevo nas cintas dos cabos, o que impede a obtenç&e de uma boa estanqueidade die léctrica.
0 presente invento tem por objectivo remediar este inconveni ente propondo um dispositivo de união graças ao qual se obté uma boa estanqueidade dieléctrica independentemente de pose) veis variaçães de forma da cinta exterior dos cabos a ligar,
Este objectivo é atingido por intermédio de um dispositivo de união do tipo definido no início da pr sente descrição e no qual, de acordo com o invento, as junta de estanqueidade se destinam a ser colocadas nae extremidade descarnadas dos cabos, cada uma entre um apoio interno solid
I rio com a saia e a face terminal da cinta de isolamento do
bo associado, sendo a estanqueidade dieléctrica efectuada ; compressão de cada junta de estanqueidade entre o referido poio interno e a referida face terminal em consequência do longamento da saia quando do cravamento.
Deste modo, a estanqueidade dieléctrica tida é tornada independente de possíveis variações ou irregu 1aridades de forma da cinta de isolamento dos cabos,
Obtem-se uma compressão eficaz das junt de estanqueidade quando do cravamento graças a um alongament da saia superior ao da bainha. Para este efeito, a saia é ta de um material sintético cujo coeficiente de alongamento
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superior ao do material que forma a bainha
Vantajosamente, a superfície exterior da bainha e a superfície interior correspondente da saia possuem um diâmetro que varia entre o meio do dispositivo de união e cada extremidade deste. Em virtude desta forma por exem pio em "barril" ou bicónica, engendram-se componentes de for ças axiais quando do cravamento e permitem obter o alongamen to diferencial desejado sem que seja necessário proceder a várias passagens de cravamento.
Ainda vantajosamente, em cada uma das suas extremidades, a bainha apresenta, pelo menos um entalhe que coopera com uma parte da saia formando saliência no interior desta, de maneira que o cravamento provoque o escapamento defe ta parte saliente para fora do entalhe e a sua deslocação para apoio na extremidade da bainha, impedindo assim o retorno da parte saliente no entalhe apos cravamento. Esta disposiçãc contribui ainda para assegurar o alongamento diferencial necessário a tuna boa colocação em compressão das juntas de estanque idade.
0 invento sera melhor compreendido pela leitura da descrição que se segue, a título indicativo mas não limitativo, com referencia aos desenhos anexos, nos quais;
Fig*. 1 - já descrita, á uma vista em co£ te longitudinal de um disposlti
vo de união que faz parte do estado da técnica,
Fig», 2 - é uraa vista em côrte longitudinal de uma primeira forma de ree
lização de um dispositivo de união de acordo com o invento;
Fig». 3 - é uma vista em corte longitudinal representando dois cabos li.
- 3 -
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gados por intermédio do dispositivo de união da figura 2,
Fig». 4 - é uma vista em corte longitudinal de uma segunda forma de
realização de um dispositivo de união de acordo com o invento,
Fig*. 5 - © um© vista em corte transver-l sal segundo o plano V-V da fi-l
gura 4, e
Fig», 6 - é uma vista em corte longitudjJ nal representando dois cabos
ligados por intermédio do dispositivo del união da figura 4.
0 dispositivo de união 10 ilustrado pela figura 2 compreende uma bainha metálica 11, condutora de eleq tricidade, uma saia 15 em material sintético isolador e duas juntas de estanqueidade 21, 22 igualmente num material sinté-l tico isolador.
A bainha cilíndrica 11 compreende dois alojamentos opostos 12, 13 que se abrem nas suas faces de ex tremidade e destinados a receber as extremidades descarnadas 23, 24 dos cabos a ligar 25, 26 (representados por travessães na figura 2). |
A saia 15 é em duas partes 16, 17 coloca das na bainha 11 a partir das duas extremidades desta e reunidas na parte central do dispositivo de união por sobremoldagem de uma peça de ligação 20 num material semelhante ao das partes l6 e 17. A peça 20 apresenta uma parte central mol dada num pequeno anel 14 da linha 11 e duas partes anulares í laterais que penetram em ranhuras formadas nas partes l6, 17 nas proximidades das suas extremidades adjacentes.
Nas suas extremidades a saia 15 possui
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partes terminais l6a, 17,2; ^e maior espessura cujo diâmetro interno corresponde sensivelmente ao diâmetro exterior dae cintas de isolamento 27, 28 dos cabos 25, 26. Pequenos anéis internos 18, 19 solidários com a saia 15 sâo formados sensivelmente ao nível das ligaçâes das partes terminais l6a, 17» com o resto da sala 15J estas limitam a ligação das partes de saia l6, 17 na bainha 11 entrando em contacto com as extremidades da bainha e possuem um diâmetro interno superior ao da parte descarnada dos cabos,
•
As juntas de estanqueidade 21, 22 estão a lojadas nas partes terminais l6a, 17a da saia 15. Sâo por exemplo de borracha sintética e possuem uma secção transversal sensivelmente igual à das cintas de isolamento 27, 28 dos cabos 25, 26. Todavia, poder-se-á conferir às juntas 21, 22 um diâmetro exterior ligeiramente superior ao diâmetro in terior das partes terminais l6a, 17a de maneira que as juntas 21, 22 possam estar imobilizadas fixamente nas extremida des da saia 15.
A ligação dos cabos 25, 26 é efectuada co
mo se segue.
As extremidades descarnadas 23, 24 dos ca I bos 25, 26 sâo introduzidas nos alojamentos 12, 13 através
das juntas 21, 22 até que as faces terminais 27a, 28a das cintas de isolamento 27, 28 entrem em contacto com as juntas 21, 22 aplicando-as contra os pequenos anéis 18, 19.
Em seguida, o dispositivo de união 10 é cravado em cada extremidade de cabo. No decorrer do cravamen
«na
to, a bainha 11 ó apertada sucessivamente numa e noutra extremidade descarnada, assegurando a ligação mecânica e eléctrica entre os cabos 25, 26. Simultâneamente, as partes de saias 16, 17 alongam-se, comprimindo as juntas 21, 22.
Após o cravamento (figura 3), as juntas 21, 22 encontram-se esmagadas entre os pequenos anéis 18, 10 e as faces terminais 27a, 28 a. das cintas de isolamento 27,
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28, As juntas asseguram assim uma perfeita estanqueidade dieléctrica independentemente de variações de forma ou de dimensões das cintas 27, 28 podendo dar origem a folgas entre as superfícies periféricas destas e as partes terminais da saia 15.
A fim de assegurar uma compressão eficaz das juntas 21, 22, escolhe-se para as partes de saia l6, 17 : um material que tem um coeficiente de alongamento superior do material constitutivo da bainha 11. A título de exemplo, . pode escolher-se para as partes de saia 16, 17 uma matéria ί plástica injectável tal como uma poliamida, sendo a bainha 1). numa liga de alumínio tal como o que se conhece sob a denominação A5. Esta diferença de coeficiente de alongamento traduj -se, após o cravamento, por folgas 29 entre as extremidades da bainha 11 e os pequenos anéis 18, 19.
A obtenção de um alongamento diferencial suficiente para assegurar a compressão pretendida das juntas 21, 22 pode necessitar de uma zona de rectificaçâo relativamente longa, podendo a rectificaçâo necessitar de várias passagens de cravamento.
Para obter o alongamento diferencial desj jado com uma única passagem de cravamento, utilizar-se-á vantajosamente, um dispositivo de união tal como o representado nas figuras 4 e 5.
As figuras 4 e 5 representam o dispositivo de união 30 antes do cravamento. Compreende uma bainha metálica 31, uma saia 35 β duas juntas de estanqueidade 4l, 42,
•
A bainha 31 possui uma forma de barril, ou bicónica, com um diâmetro exterior decrescente desde o meio da bainha até cada extremidade desta. Nestas extremidades, a bainha 31 apresenta dois alojamentos cilíndricos 32,
33 destinados a receber as extremidades descarnadas 43, 44 d« cabos a ligar 45, 46 (representados por travessões na figura
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I
A saia 35 é obtida por sobremoldagem. poj . sui uma superfície interior que se adapta à superfície exterior da bainha 31, o que lhe confere uma espessura crescente dejs de o meio da bainha em direcção a cada extremidade.
{
As partes terminais 36a, 37a da saia 35 , apresentam pequenos anéis internos 38, 39 semelhantes aos l8,j 19 das partes terminais da saia 15 da figura 2 mas distinguemj-se destes últimos pela presença suplementar de lábios circul| res 51, 52 que formam saliência no interior da saia 35» Cada i lábio 51, 52 está alojado num entalhe ou garganta periférica ’ 53, 54 de formato correspondente à extremidade da bainha 31. ·
Como no caso do dispositivo de união da figura 2, as juntas de estanqueidade 4l, 42 estão alojadas nae partes terminais 36a, 37a da saia 35· Os materiais constitutivos dos elementos do dispositivo de união 30 podem ser idênticos aos dos elementos correspondentes do dispositivo de união 10 descrito mais atrás.
Em virtude da ligação dos cabos 45, 46, as extremidades descarnadas 43, 44 destes sâo introduzidas nos alojamentos 32, 33 até que as faces terminais 47a, 48a das cio tas de isolamento 47, 48 dos cabos entrem em contacto com as
| juntas 4l, 42,
Em seguida, o dispositivo de união é cravado em cada extremidade do cabo· Devido à forma em barril ou* bicónica da interface entre a bainha 31 ® a saia 35, o cravamento engendra componentes de forças axiais que favorecem o alongamento. E por esse motivo que uma única passagem de cravamento pode ser suficiente para obter o alongamento diferencial desejado. Não é, portanto, necessário dispor de uma zona de rectificação tão longa como a que é necessária prever para pei mitir várias passagens de cravamento, Assim, uma das vantagens importantes da forma de realização das figuras 4 a 6 consiste no facto de a bainha metálica 31 poder ser relativamente curta. A título indicativo, para uma mesma secção de cabo, o cora
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primento da bainha 31 pode ser 5θ$ a 6θ$> Inferior ao da bainha 11 da figura 2.
A fim de assegurar boas ligações mecânica e eléctrica entre a bainha e os cabos numa única passagem de cravamento, formam-se nos alojamentos 32, 33 rugosidades nos dentes internos tais como 33a (figura 5)·
No decorrer do cravamento, os'lábios 51, 52 escapam-se das gargantas 53, 54 em direcç&o às extremidades da bainha. Terminado o cravamento (figura 6), a deslocação dos lábios 51, 52 para apoio contra as faces terminais da bainha impede o retorno destes lábios para a sua posição inicial e contribui para garantir o alongamento diferencial nece ssário à compressão das juntas 4l, 42, alongamento que se tra duz por folgas 49 entre as extremidades da bainha 31 e os pequenos anéis 38, 39·
Considerou-se o caso de lábios contínuos que cooperam com gargantas periféricas nas extremidades da bainha. Como variante, poderão ser repartidas várias partes salientes numa mesma circunferência interior da saia em cada parte terminal desta, cooperando estas partes salientes com entalhes correspondentes formados na periferia das extremidades da bainha.
0 dispositivo de união de acordo com o
presente invento, do qual se acabam de descrever duas formas
de realização, é aplicável, no seu princípio, a uma gama alar o *2
gada de secção de cabos a ligar, por exemplo de 4 mm a 95mm
0 depósito do primeiro pedido para o invento acima descrito foi efectuado em França, em l4 de Outubro de 1983 sob o n?. 83. 16. 4l0.
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Description of the object of the invention
SOCIÉTÉ D * APPAREILLAGE AUXILIAIRE POUR L * ELECTRICITÉ (SAAE) Société Anonyme, a French company, with its registered office at 10 rue Jacquard. Zone Industrielle No.2 27031 EVREUX CEDEX, France, wishes to obtain in Portugal for: "UNION DEVICE FOR ELECTRIC CABLES ISOLATED".
The present invention relates to a connection device for insulated electrical cables, and more particularly to a connecting device of the type comprising a conductive sheath having two opposing housings for the stripped ends of two cables to be connected, a skirt insulator surrounding the sheath and seals interposed between the skirt and the ends of the insulation tapes of the cables, the mechanical connection between the connection device and the stripped ends of the cables being effected by crimping the connecting device at the ends of the cables,
In such known devices, the seals are each placed between the skirt and the peripheral surface of the insulation strap of a cable at the end thereof. When crimping, the sheath lengthens and compresses the joint between the cable strap and the skirt. Figure 1 illustrates such a connecting device shown in the right-hand side showing the connecting device prior to crimping, with the sheath 1, the skirt 2 and the gasket 3; the left side shows the uniSo device
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after crimping, the sheath 1 being nailed to the stripped end of the cable while the gasket is compressed between the cable insulation tape and the skirt as a result of the elongation of the sheath.
The dielectric sealing effected by the gasket 3 after crimping is not always satisfactory. With effect for the same joint, this watertightness depends on the shape of the cable strap, shape that varies according to the manufacturers. In addition, in the case of polyphase lines, the adjustment of the phases is sometimes effected by embossed marks on the cable straps, which prevents good dielectric tightness.
The present invention has the object of remedying this problem by proposing a coupling device by virtue of which good dielectric tightness is obtained regardless of the variations in shape of the outer strap of the cables to be connected,
This object is achieved by means of a coupling device of the type defined at the beginning of the description and in which, in accordance with the invention, the seals are intended to be disposed at the end of the cables, each between a support internal solid
With the skirt and end face of the insulation strap of the
associated with dielectric leakage; compression of each gasket between said inner well and said end face as a consequence of the length of the skirt when crimping.
In this way, the dielectric tightness taken is made independent of possible variations or irregularities in the shape of the cable insulation tape,
An effective compression of the sealing gaskets is obtained when crimping thanks to an elongation of the upper skirt of the sheath. For this purpose, the skirt is a synthetic material whose elongation coefficient
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superior to that of the material forming the sheath
Advantageously, the outer surface of the sheath and the corresponding inner surface of the skirt have a diameter that varies between the means of the attachment device and each end thereof. By virtue of this form, for example in "barrel" or biconical, components of axial forces are generated when crimping and allow the desired differential length to be obtained without the need for several crimping passages.
Advantageously still, at each one of its ends, the sheath has at least one notch cooperating with a part of the skirt forming protrusion therein, so that the crimping causes the escapement to protrude the protrusion out of the notch and its displacement for support at the end of the sheath, thus preventing return of the protruding part into the notch after crimping. This arrangement further contributes to ensuring the differential elongation necessary for a good compression fit of the watertight joints.
The invention will be better understood by reading the following description, by way of an indicative but not limitative one, with reference to the accompanying drawings, in which;
Fig. 1, already described, is a longitudinal view of a device
forming part of the state of the art,
Fig. 2 is a longitudinal cross-sectional view of a first form of ree
of a coupling device according to the invention;
Fig. 3 is a longitudinal cross-sectional view showing two li cables.
- 3 -
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by means of the connecting device of figure 2,
Fig. 4 is a longitudinal cross-sectional view of a second form of
The invention also relates to a connection device according to the invention,
Fig. A cross-sectional view of the salt according to the VV plane of the fi-1
gura 4, and
Fig. 6 is a longitudinal sectional view showing two cables
connected by the coupling device of Figure 4.
The connecting device 10 shown in figure 2 comprises a metal sheath 11, electrically conductive, a skirt 15 in insulating synthetic material and two seals 21, 22 also in an insulating synthetic material.
The cylindrical sleeve 11 comprises two opposing housings 12, 13 which open on their extrusion faces and are intended to receive the stripped ends 23, 24 of the cables to be connected 25, 26 (shown in cross-sections in figure 2). |
The skirt 15 is in two portions 16, 17 placed in the sheath 11 from the two ends thereof and joined in the central part of the overmolding attachment of a connecting piece 20 in a material similar to that of the parts 16 and 17. The piece 20 shows a central mole given in a small ring 14 of the line 11 and two annular side parts which penetrate grooves formed in the portions 16, 17 in the vicinity of their adjacent ends.
At its ends the skirt 15 has
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ΙΊ> ί
terminal portions 16a, 17.2; and a larger thickness whose inner diameter corresponds substantially to the outer diameter of the insulation straps 27, 28 of the cables 25, 26. Small inner rings 18, 19 integral with the skirt 15 are formed substantially at the level of the connections of the end portions 16a, 17 ' with the rest of the room 15J these limit the connection of the skirt portions 16, 17 in the sheath 11 into contact with the ends of the sheath and have an inner diameter greater than that of the stripped part of the cables,
•
The seals 21, 22 are seamed in the end portions 16a, 17a of the skirt 15. They are for example synthetic rubber and have a cross-section substantially equal to that of the insulation straps 27, 28 of the cables 25, 26. However, the joints 21, 22 will have an outer diameter slightly larger than the inner diameter of the end portions 16a, 17a so that the joints 21, 22 may be fixedly fixed at the ends of the skirt 15.
The connection of the cables 25, 26 is effected with
as follows.
The stripped ends 23, 24 of the bars 25, 26 are introduced into the housings 12, 13 through
of the seals 21, 22 until the end faces 27a, 28a of the insulation straps 27, 28 come into contact with the seals 21, 22 by applying them against the small rings 18,
Thereafter, the attachment device 10 is crimped on each end of the cable. In the course of the
"at
the sheath 11 is tightened successively at one and the other stripped end, ensuring the mechanical and electrical connection between the cables 25, 26. Simultaneously, the skirt portions 16, 17 extend, compressing the joints 21, 22.
After crimping (Figure 3), the gaskets 21, 22 are crushed between the small rings 18, 10 and the end faces 27a, 28a. of the insulation straps 27,
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The seals thus ensure a perfect dielectric tightness regardless of variations in shape or size of the straps 27, 28 which may give rise to gaps between the peripheral surfaces thereof and the end portions of the skirt 15.
In order to ensure effective compression of the joints 21, 22, the skirt portions 16, 17 are chosen : a material having an upper elongation coefficient of the material constituting the sheath 11. By way of example, an injectable plastic material such as a polyamide may be selected for the skirt portions 16, 17, the sheath 1 being. in an aluminum alloy such as is known under the designation A5. This difference in elongation coefficient translates, after crimping, by gaps 29 between the ends of the sheath 11 and the small rings 18, 19.
Obtaining a sufficient differential elongation to ensure the desired compression of the joints 21, 22 may require a relatively long rectification zone, and the rectification may require several crimping passages.
In order to obtain the differential elongation defined with a single crimping passage, a fastening device such as that shown in Figures 4 and 5 will be advantageously used.
Figures 4 and 5 show the attachment device 30 prior to crimping. It comprises a metal sheath 31, a skirt 35 β two seals 41, 42,
•
The sheath 31 is in the form of a barrel, or biconical, with a decreasing outer diameter from the middle of the sheath to each end thereof. At these ends, the sheath 31 has two cylindrical housings 32,
33 for receiving the stripped ends 43, 44 of cables to be connected 45, 46 (shown in dashes in figure
55815
02 / JJJ / GDR Η.1944
CAS 44
I
The skirt 35 is obtained by overmolding. poj. there is an inner surface which fits the outer surface of the sheath 31, which gives it an increasing thickness beyond the middle of the sheath towards each end.
{
The end portions 36a, 37a of the skirt 35 have small inner rings 38, 39 similar to the ones 18, 19 of the end portions of the skirt 15 of Figure 2 but distinguished from the latter by the additional presence of labial lips. Each of the lips 51, 52 is housed in a peripheral groove or circumferential groove 53, 54 corresponding to the end of the sheath 31.
As in the case of the attachment device of figure 2, the seals 41, 42 are housed in the end portions 36a, 37a of the skirt 35. The materials constituting the elements of the attachment device 30 may be identical to those of the corresponding elements of the attachment device union 10 described further above.
By virtue of the connection of the cables 45, 46, the stripped ends 43, 44 of these are introduced into the housings 3 2 , 33 until the end faces 47a, 48a of the insulation cables 47, 48 of the cables come into contact with the
| joints 41, 42,
Thereafter, the attachment device is nailed to each end of the cable. Because of the barrel or biconical shape of the interface between the sheath 31 and the skirt 35, the crimping engenders axial force components that promote elongation. And for that reason a single crimping passage may be sufficient to obtain the desired differential elongation. Therefore, it is not necessary to have a rectifying zone as long as it is necessary to provide for several crimping passages. Thus, one of the important advantages of the embodiment of Figures 4 to 6 is that the metal sheath 31 may be relatively short. As an indication, for the same cable section, the
- 7,5815
02 / JJJ / GDR Η. 1944
CAS 44
The length of the sheath 31 may be 5θ $ to 6θ $> Lower than that of the sheath 11 of Figure 2.
In order to ensure good mechanical and electrical connections between the sheath and the cables in a single crimping passage, there are formed in the housings 32, 33 roughnesses in the internal teeth such as 33a (Fig. 5).
In the course of the crimping, the lips 51, 52 escape from the grooves 53, 54 towards the ends of the sheath. After the crimping (Fig. 6), the displacement of the lips 51, 52 to support against the end faces of the sheath prevents the return of these lips to their initial position and contributes to guarantee the differential elongation necessary for the compression of the seals 4l, 42, elongation which is caused by gaps 49 between the ends of the sheath 31 and the small rings 38, 39
It was considered the case of continuous lips that cooperate with peripheral grooves at the ends of the sheath. Alternatively, a plurality of protruding parts may be distributed on the same inner circumference of the skirt at each end portion thereof, these protruding portions cooperating with corresponding notches formed in the periphery of the ends of the sheath.
The coupling device according to claim
present invention, of which two forms have been described
is applicable, in principle, to a range of
cable section to be connected, for example from 4 mm to 95 mm
The deposit of the first application for the invention described above was made in France, on October 14, 1983 under No. 83. 16. 4l0.
(I.e.
- β 55815
02 / JJJ / GDR Η. 1944
CAS 44
Claims (8)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8316410A FR2553594B1 (en) | 1983-10-14 | 1983-10-14 | CONNECTOR FOR INSULATED ELECTRICAL CABLES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PT79350A PT79350A (en) | 1984-11-01 |
| PT79350B true PT79350B (en) | 1986-07-22 |
Family
ID=9293167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PT79350A PT79350B (en) | 1983-10-14 | 1984-10-12 | CONNECTOR FOR ISOLATED ELECTRIC CABLES |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0138700B1 (en) |
| AT (1) | ATE29804T1 (en) |
| DE (1) | DE3466327D1 (en) |
| DK (1) | DK489484D0 (en) |
| ES (1) | ES291606Y (en) |
| FR (1) | FR2553594B1 (en) |
| PT (1) | PT79350B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2177131B (en) * | 1985-01-02 | 1989-04-12 | Polypipe Ltd | A drainage gulley |
| ES2006878A6 (en) * | 1988-03-30 | 1989-05-16 | Capelles De La Fuente Rosa | Electrical connection device for connecting insulated conductors |
| ES2114140T3 (en) * | 1993-07-30 | 1998-05-16 | Etcon Corp | CABLE JOINT PROTECTOR. |
| DE4426790A1 (en) * | 1994-07-28 | 1996-02-08 | Pfisterer Elektrotech Karl | Compression sleeve |
| GB2328087A (en) * | 1997-06-26 | 1999-02-10 | B & H Ltd | Connection for high voltage |
| JP2002216864A (en) * | 2001-01-19 | 2002-08-02 | Yazaki Corp | Connection structure and connection method of electric cable |
| DE102006028880A1 (en) | 2006-06-21 | 2007-12-27 | Yazaki Europe Ltd., Hemel Hempstead | cable connection |
| CN104701802A (en) * | 2014-05-25 | 2015-06-10 | 安徽工程大学 | Pressing connection ring used for cable joint |
| EP3062407B1 (en) * | 2015-02-27 | 2019-06-26 | Upeca | Coupling sleeve between conductive cables, manufacturing process and implementing process for such a sleeve. |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3036147A (en) * | 1959-08-21 | 1962-05-22 | Fargo Mfg Co Inc | Connector |
| NL136222C (en) * | 1963-03-21 | |||
| US3356987A (en) * | 1966-08-10 | 1967-12-05 | Amp Inc | Insulation support and wire guide for an electrical connector |
-
1983
- 1983-10-14 FR FR8316410A patent/FR2553594B1/en not_active Expired
-
1984
- 1984-10-08 DE DE8484402009T patent/DE3466327D1/en not_active Expired
- 1984-10-08 EP EP84402009A patent/EP0138700B1/en not_active Expired
- 1984-10-08 AT AT84402009T patent/ATE29804T1/en not_active IP Right Cessation
- 1984-10-11 ES ES1984291606U patent/ES291606Y/en not_active Expired
- 1984-10-12 PT PT79350A patent/PT79350B/en not_active IP Right Cessation
- 1984-10-12 DK DK489484A patent/DK489484D0/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0138700B1 (en) | 1987-09-16 |
| DK489484D0 (en) | 1984-10-12 |
| PT79350A (en) | 1984-11-01 |
| FR2553594A1 (en) | 1985-04-19 |
| ATE29804T1 (en) | 1987-10-15 |
| EP0138700A1 (en) | 1985-04-24 |
| DE3466327D1 (en) | 1987-10-22 |
| FR2553594B1 (en) | 1986-02-21 |
| ES291606Y (en) | 1987-01-16 |
| ES291606U (en) | 1986-05-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM3A | Annulment or lapse |
Free format text: LAPSE DUE TO NON-PAYMENT OF FEES Effective date: 19930124 |