EP3246992A1 - Verbindungsvorrichtung für ein endstück eines elektrokabels - Google Patents

Verbindungsvorrichtung für ein endstück eines elektrokabels Download PDF

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Publication number
EP3246992A1
EP3246992A1 EP17171855.4A EP17171855A EP3246992A1 EP 3246992 A1 EP3246992 A1 EP 3246992A1 EP 17171855 A EP17171855 A EP 17171855A EP 3246992 A1 EP3246992 A1 EP 3246992A1
Authority
EP
European Patent Office
Prior art keywords
longitudinal
face
insert
intermediate face
longitudinal intermediate
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
Application number
EP17171855.4A
Other languages
English (en)
French (fr)
Other versions
EP3246992B1 (de
Inventor
Stéphane Areias
Hubert LAVERSANE
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.)
Societe Industrielle de Construction dAppareils et de Materiel Electriques SICAME SAS
Original Assignee
Societe Industrielle de Construction dAppareils et de Materiel Electriques SICAME SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Societe Industrielle de Construction dAppareils et de Materiel Electriques SICAME SAS filed Critical Societe Industrielle de Construction dAppareils et de Materiel Electriques SICAME SAS
Publication of EP3246992A1 publication Critical patent/EP3246992A1/de
Application granted granted Critical
Publication of EP3246992B1 publication Critical patent/EP3246992B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2101/00—One pole
    • 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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/305—Clamped connections, spring connections utilising a screw or nut clamping member having means for facilitating engagement of conductive member or for holding it in position

Definitions

  • the invention relates to connection devices for a terminal section of electric cable.
  • the invention aims to provide a connection device similar but simpler and more convenient.
  • connection device according to the invention is provided for be used with a terminal cable section.
  • the invention is indeed based on the observation that if the characteristics which have just been exposed are present, then the interactions between the clamping screws, the cable end section and the insert during the immobilization of the terminal section in the device will lead to a final arrangement offering an excellent tightening of the cable end section and therefore an excellent quality of electrical contact, in particular because it prevents the insert prematurely blocks the progression of a screw.
  • the cable node shown on the Figures 1 and 2 comprises a connection device 1, an electric cable 3 and an electric cable 5 of larger section than the electric cable 3.
  • the insulating sheath 7 of the cable 3 has been removed on a terminal section 6 while the insulating sheath 9 of the cable 5 has been removed on a terminal section 8, so that only the conductive core of the cables 3 and 5 is present on the terminal sections 6 and 8.
  • connection device 1 comprises a connection sleeve 2 and an insert 4.
  • connection sleeve 2 comprises a conductive element 10 made of aluminum or other metallic material which is good in conducting electricity, for receiving the terminal sections 6 and 8 of the electric cables 3 and 5, as well as clamping screws 42 and 43 configured to tighten. the terminal sections 6 and 8 introduced into the conductive element 10.
  • the conductive element 10 has a first tubular portion 11, a second tubular portion 12 similar to the first tubular portion 11 and a junction portion 13 connecting the first tubular portion 11 and the second tubular portion 12.
  • the first tubular portion 11 receives the terminal section 6 of the cable 3 with the insert 4, while the second tubular portion 12 receives the terminal section 8 of the cable 5 alone, that is to say without insert.
  • tubular portions 11 and 12 being similar, the description of the first tubular portion 11 which follows also applies to the second tubular portion 12.
  • the first tubular portion 11 is oriented in an axial direction and has a first thread 14 and a second thread 15 each passing through and oriented in a radial direction.
  • the first tapping 14 and the second tapping 15 are arranged with an axial gap and with an angular difference.
  • the first tapping 14 is configured to cooperate with the clamping screw 42, while the second tapping 15 is configured to cooperate with the clamping screw 43, to clamp a cable end section such as 6 or 8.
  • the first tubular portion 11 has an inner surface 16 delimiting a housing 17 configured to receive the end portion of a cable when it has a relatively high section, such as the terminal section 8 of the cable 5.
  • Annular ribs 18 are provided on the inner surface 16.
  • the joining portion 13 forms a bottom wall 19 for the housing 17, which opens out opposite the bottom wall 19 through an opening 21.
  • the cable end section is introduced into the housing 17 through the opening 21.
  • the first tapping 14 is located on the side of the junction portion 13, while the second tapping 15 is located on the side of the opening 21.
  • clamping screws 42 and 43 are identical, as are the threads 14 and 15.
  • the screws 42 and 43 each comprise a threaded rod 30, a head 31 and a fuse portion 32 connecting the threaded rod 30 to the head 31, the fuse portion 32 being configured to break automatically when a predetermined torque is reached. This avoids damaging the terminal cable section by over-tightening.
  • the threaded rod 30 has, on the opposite side to the head 31, a distal surface 33 which is straight.
  • the housing 17 is sized to accommodate a cable end section of a section in a range from 120 mm 2 to 240 mm 2 .
  • the insert 4 is placed in the housing 17 and the terminal section is received in the portion of the housing 17 not occupied by the insert 4.
  • the range of smaller sections of the terminal cable sections ranges from 50 mm 2 to 95 mm 2 .
  • the insert 4 is gutter-shaped and has an outer face 24, an inner face 25, a first longitudinal intermediate face 22 extending between the outer face 24 and the inner face 25, and a second longitudinal intermediate face 23, extending between the outer face 24 and the inner face 25.
  • the first longitudinal intermediate face 22 is located on a first side of the insert 4 and the second longitudinal intermediate face 23 is located on a second side of the insert 4 opposite to the first side.
  • the outer face 24 and the inner face 25 are each curved.
  • the outer face 24 has a generally convex profile while the inner face 25 has a generally concave profile.
  • the insert 4 is configured to be disposed in the housing 17 delimited by the tubular portion 11 with the outer face 24 in contact with the inner surface 16 of the tubular portion 11.
  • the inner face 25 of the insert 4 is eccentric relative to the inner surface 16 of the tubular portion 11 to the threads 14 and 15.
  • the insert 4 has a length such that it extends from the bottom wall 19 to the opening 21 when it is received in the housing 17 of the tubular portion 11, as is clearly visible on the figure 4 .
  • the insert 4 extends longitudinally between a first end intermediate face 39 and a second end intermediate face 40 opposite to the first end intermediate face 39.
  • the first longitudinal intermediate face 22 and the second longitudinal intermediate face 23 each have a stepped profile.
  • first longitudinal intermediate face 22 and the second longitudinal intermediate face 23 of the insert 4 each have a first longitudinal portion 35 set back with respect to a second longitudinal portion 36.
  • the first longitudinal portion 35 of the first longitudinal intermediate face 22 is at the right of the second longitudinal portion 36 of the second longitudinal intermediate face 23 while the second longitudinal portion 36 of the first longitudinal intermediate face 22 is at the right of the first longitudinal portion. 35 of the second longitudinal intermediate face 23.
  • the first longitudinal portion 35 of the first longitudinal intermediate face 22 and the second longitudinal portion 36 of the second longitudinal intermediate face 23 are provided to face the first clamping screw 42, engaged in the first internal thread 14; while the second longitudinal portion 36 of the first longitudinal intermediate face 22 and the first longitudinal portion 35 of the second longitudinal intermediate face 23 are intended to face the second clamping screw 43 engaged in the second tapping 15.
  • Each first longitudinal portion 35 is of the same length as the second longitudinal portion 36 of which it is right.
  • first longitudinal portion 35 of the first longitudinal intermediate face 22 and the second longitudinal portion 36 of the second longitudinal intermediate face 23 have the same length
  • the second longitudinal portion 36 of the first longitudinal intermediate face 22 and the first portion. longitudinal 35 of the second longitudinal intermediate face 23 have the same length
  • the first and second longitudinal intermediate faces 22 and 23 of the insert 4 each have a shoulder 37 at the junction between the first longitudinal portion 35 and the second longitudinal portion 36.
  • the shoulder 37 of the first longitudinal intermediate face 22 is at the right of the shoulder 37 of the second longitudinal intermediate face 23.
  • each shoulder 37 is straight.
  • the shrinkage between the first longitudinal portion 35 and the second longitudinal portion 36 is identical for each longitudinal intermediate face 22 and 23.
  • the first longitudinal intermediate face 22 is narrower in the portion 36 than in the portion 35.
  • the second longitudinal intermediate face 23 is narrower in the portion 36 than in the portion 35.
  • the outer face 24 of the insert 4 further has a plurality of reentrant surface portions 38 extending longitudinally.
  • the reentrant portions 38 extend from the first end intermediate face 39 at the shoulder 37 of the first longitudinal intermediate face 22.
  • the reentrant portions 38 extend from the second end intermediate face 40 until at the shoulder 37 of the second longitudinal intermediate face 23.
  • the reentrant portions 38 extend from the first face intermediate end 39 to the second end intermediate face 40.
  • a reentrant portion 38 of the first sector portion and a reentrant portion 38 of the third sector portion form a first longitudinal groove 44.
  • a re-entrant portion 38 of the second sectoral portion and a reentrant portion 38 of the third sectorial portion form a second longitudinal groove 45.
  • two reentrant portions 38 form a third longitudinal groove 46 at mid-distance between the first longitudinal groove 44 and the second longitudinal groove 45.
  • the insert 4 thus has a petaloid transverse profile, clearly visible on the Figures 6, 8 and 9 .
  • the insert 4 has a certain symmetry.
  • the insert 4 has a profile, when it is observed with its first end intermediate face 39 facing towards a first side, its second end intermediate face 40 facing towards a second side opposite to the first side, its inner face 25 facing upwards and its outer face 24 facing down, which is similar to the profile that it has when it is observed with its second end intermediate face 40 turned towards the first side, its first intermediate face end end 39 turned towards the second side, its outer face 24 facing upwards and its inner face 25 facing downwards.
  • the insert 4 can be introduced into the housing 17 with either its first intermediate end face 39 or its second end intermediate face 40 first.
  • the sleeve 2 (conductive element 10 and screw 42, 43) is initially in a state where the screws 42 and 43 are in place in the threads 14 and 15 with each of the screws 42 and 43 which has its distal surface 33 at the outlet internal thread in which it is engaged (see figure 8 the screw 43 which is in this position).
  • the insert 4 is positioned in the housing 17 of the tubular portion 11 as shown in the drawings, that is to say with its outer face 24 which is against the inner surface 16 of the tubular portion 11 and with its inner face. 25 which is turned to the screws 42 and 43.
  • each distal surface 33 is away from the first longitudinal intermediate face 22 and the second longitudinal intermediate face 23 of the insert 4, which is then free to pivot around of the axial direction: the insert 4 can be in the angularly centered position shown on the figures 3 , 4 , 8 and 9 or in a position inclined relative to this centered position, for example the position shown on the figure 6 .
  • the outer face 24 of the insert 4 rests on the annular ribs 18 formed on the inner surface 16 of the tubular portion 11.
  • the terminal section 6 of the cable 3 is introduced through the opening 21 in the housing 17 of the tubular portion 11, and more precisely in the portion 34 of this housing not occupied by the insert 4; and the terminal section 8 of the cable 5 is introduced into the housing of the tubular portion 12.
  • the end portion 6 is sandwiched between the distal surface 33 of the screw 42 and the inner face 25 of the insert 4 and also between the distal surface 33 of the screw 43 and the inner face 25 of the insert 4.
  • the end portion 8 is sandwiched between the distal surface 33 of the screw 42 and the inner surface 16 of the tubular portion 12 and also between the distal surface 33 of the screw 43 and the inner surface 16 of the portion tubular 12.
  • the annular ribs 18 are favorable for mechanical holding and electrical contact with the terminal cable sections.
  • the device 1 is intended to be used in a distribution network of electricity both low voltage and medium voltage, that is to say up to 50,000 volts.
  • the presence of the insert 4 is also favorable to these electromagnetic performances, since the insert 4 provides a certain centering of the terminal section 6 of the cable 3, and since the rods 30 of the screws 42 and 43 of the tubular portion 11 sink in the housing 17 by an amount close to that of the screws 42 and 43 of the tubular portion 12, despite the smaller diameter of the terminal section 6 of the cable 3.
  • the staggered arrangement of the longitudinal intermediate faces 22 and 23 of the insert 4 makes it possible to prevent the insert from prematurely blocking the progression of one of the screws 42 and 43.
  • connection device 1 is not intended to be used in the absence of cable to connect.
  • connection device 1 admits a state ready to receive a terminal section of electrical cable where the insert 4 is received in the housing 17 with the distal surface 33 of the first clamping screw 42 which is the spacing of each of the first and second longitudinal intermediate faces 22 and 23, and with the distal surface 33 of the second clamping screw 43 which is spaced apart from each of the first and second longitudinal intermediate faces 22 and 23; and in this state the insert 4 is free to pivot about the axial direction in which is oriented the tubular portion 11.
  • the insert 4 can no longer pivot and therefore remains in the angular position reached.
  • the stepped arrangement of the longitudinal intermediate face 22 and the longitudinal intermediate face 23 and the angular orientation of the screw 42 are such that the angular position reached is the above-mentioned centered angular position.
  • the angular difference between the insert 4 and the screw 42 is determined between the median longitudinal plane 26 of the insert 4 and the general direction 27 of the screw 42; and likewise the angular difference between the insert 4 and the screw 43 is appreciated between the median longitudinal plane 26 of the insert 4 and the general direction 28 of the screw 43.
  • the insert 4 may have any angular position.
  • the longitudinal intermediate faces 22 and 23 may be at equal distances or at different distances from the distal surface 33 of the screw 42.
  • the insert 4 is in the angular position illustrated on the figure 6 it is the longitudinal intermediate face 23 that is closest to the distal surface 33 of the screw 42.
  • the distal surface 33 will first meet the longitudinal intermediate face 23, by its second longitudinal portion 36.
  • the insert 4 When continuing the tightening of the screw 42 it leads to the insert 4 to pivot about the axial direction in the direction where the first longitudinal intermediate face 22 approaches the When the first longitudinal intermediate face 22, and more precisely its first longitudinal portion 35, comes into contact with the distal surface 33, the movement can no longer continue, the screw 42 is at the end of the stroke and the insert 4 is maintained in the centered angular position.
  • the insert 4 In the case where in the state ready to receive the cable end portion, the insert 4 is in an angular position where it is the longitudinal intermediate face 22 which is closest to the distal surface 33 of the screw 42, the same centric angular position of the insert 4 is reached when the screw 42 is at the end of the stroke: during screwing, the distal surface 33 first meets the longitudinal intermediate face 22 by its first longitudinal portion 35, when continued tightening of the screw 42 causes the insert 4 to pivot about the axial direction in the direction where the second longitudinal intermediate face 23 is close to the distal surface 33, and when the second longitudinal intermediate face 23 , and more precisely its second longitudinal portion 36, comes into contact with the distal surface 33, the movement can not continue, the screw 42 is at the end of the race.
  • the stepped arrangement of the first longitudinal intermediate face 22 and the stepped arrangement of the second longitudinal intermediate face 23 are chosen so that, in the centered angular position, the distal surface 33 of the screw 43 is equidistant from the first longitudinal portion 35 of the first longitudinal intermediate face 22 and the second longitudinal portion 36 of the second longitudinal intermediate face 23.
  • connection device 1 It is then in the state of end of the connection device 1 illustrated on the figure 9 .
  • the driving depth of the screw 42 or the screw 43 is the length of the portion of its threaded rod 30 which projects into the housing 17 from the inner surface 16 of the tubular portion 11; that is to say the total length of the screw, minus the thickness of the wall of the tubular portion 11, minus the length between the outer surface of the tubular portion 11 and the upper surface of the head 31.
  • the screw that abuts after the other screw has already been abutted is in contact with only one of the longitudinal intermediate faces 22 and 23.
  • the angular position of the insert in the end state of the connection device 1 is not the same if the screw 42 is tightened first or screw 43 first.
  • the depth of insertion of the first clamping screw 42 to the end of stroke and the depth of insertion of the second clamping screw 43 to the end of stroke are slightly different.
  • the depths of penetration in view of the effect sought (to prevent the insert prematurely blocking the progression of a screw), it is advantageous for the depths of penetration to be less than 20% of the smallest depth of penetration, or even of less than 10 %.
  • the end position of the screw 42 would be the one illustrated on the figure 8 but the screw 43 could not then be screwed, it would already be at the end of the stroke with its distal surface 33 in contact with the insert. This premature blocking of the progression of the screw 43 prevents it clamping the terminal section of cable.
  • the stepped profile of the longitudinal intermediate faces 22 and 23 has a configuration such that in the end-of-travel state ( figure 9 ) the depth of insertion of the screw tightened first (for example the screw 42) and the depth of insertion of the screw tightened the second (for example the screw 43) are closer to each other than if the first and second longitudinal intermediate faces 22 and 23 had a flat profile.
  • the cable end portion is obviously inserted into the portion of the housing 17 not occupied by the insert 4 before the screws 42 and 43 are tightened.
  • the screws 42 and 43 are in principle maneuvered in turn each time being rotated a similar angular amount, to maintain a balance between their progressions.
  • the driving depths of the screws 42 and 43 are not necessarily balanced.
  • the terminal section can bloom less under the screw 43 that under the screw 42, because the side of the screw 43 the insulating sheath of the cable has an effect of limiting the development of the cable.
  • connection device 1 is particularly simple and convenient to use, since no angular centering of the insert 4 is to be made before tightening the screws 42 and 43: in the case where the distal surface 33 of one of the screws 42 and 43 meets the longitudinal intermediate face 22 or 23, the insert 4 will be automatically driven to pivot to a centered position.
  • connection device is different from a connection sleeve between two cables, for example a connecting lug similar to the connection sleeve illustrated in FIGS. Figures 1 to 4 , 8 and 9 except that one of the tubular portions is replaced by a contact pad.
EP17171855.4A 2016-05-20 2017-05-19 Verbindungsvorrichtung für ein endstück eines elektrokabels Active EP3246992B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1654557A FR3051606B1 (fr) 2016-05-20 2016-05-20 Dispositif de connexion pour un troncon terminal de cable electrique

Publications (2)

Publication Number Publication Date
EP3246992A1 true EP3246992A1 (de) 2017-11-22
EP3246992B1 EP3246992B1 (de) 2020-03-18

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EP17171855.4A Active EP3246992B1 (de) 2016-05-20 2017-05-19 Verbindungsvorrichtung für ein endstück eines elektrokabels

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EP (1) EP3246992B1 (de)
FR (1) FR3051606B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116598803A (zh) * 2023-07-17 2023-08-15 九东电气有限公司 一种非压接接续金具

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001091239A1 (en) 2000-05-25 2001-11-29 Tyco Electronics Raychem Gmbh Cable lug
EP2065978A1 (de) * 2007-11-30 2009-06-03 Ridelin, S.L. Mechanische Verbinder mit darin enthaltenen Kabelzentrierungsmitteln
US8550842B1 (en) * 2012-05-24 2013-10-08 Tyco Electronics Corporation Cable connector systems and methods including same
EP2662932A2 (de) * 2012-05-09 2013-11-13 Sicame Australia Pty Ltd Stromleitungskupplung
CN105576397A (zh) * 2016-03-02 2016-05-11 国网山东省电力公司蓬莱市供电公司 电力线缆接线装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001091239A1 (en) 2000-05-25 2001-11-29 Tyco Electronics Raychem Gmbh Cable lug
EP2065978A1 (de) * 2007-11-30 2009-06-03 Ridelin, S.L. Mechanische Verbinder mit darin enthaltenen Kabelzentrierungsmitteln
EP2662932A2 (de) * 2012-05-09 2013-11-13 Sicame Australia Pty Ltd Stromleitungskupplung
US8550842B1 (en) * 2012-05-24 2013-10-08 Tyco Electronics Corporation Cable connector systems and methods including same
CN105576397A (zh) * 2016-03-02 2016-05-11 国网山东省电力公司蓬莱市供电公司 电力线缆接线装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116598803A (zh) * 2023-07-17 2023-08-15 九东电气有限公司 一种非压接接续金具
CN116598803B (zh) * 2023-07-17 2023-09-12 九东电气有限公司 一种非压接接续金具

Also Published As

Publication number Publication date
FR3051606A1 (fr) 2017-11-24
EP3246992B1 (de) 2020-03-18
FR3051606B1 (fr) 2018-06-29

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