EP3116067A1 - Dispositif de connexion comprenant une borne enfichable - Google Patents

Dispositif de connexion comprenant une borne enfichable Download PDF

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Publication number
EP3116067A1
EP3116067A1 EP16174157.4A EP16174157A EP3116067A1 EP 3116067 A1 EP3116067 A1 EP 3116067A1 EP 16174157 A EP16174157 A EP 16174157A EP 3116067 A1 EP3116067 A1 EP 3116067A1
Authority
EP
European Patent Office
Prior art keywords
clamping
contact
lug
contact lug
busbar
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
EP16174157.4A
Other languages
German (de)
English (en)
Other versions
EP3116067B1 (fr
Inventor
Ralph Burckhardt
Alexander Wachter
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.)
ABB Schweiz AG
Original Assignee
ABB Schweiz AG
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
Priority claimed from DE102016110189.3A external-priority patent/DE102016110189B4/de
Application filed by ABB Schweiz AG filed Critical ABB Schweiz AG
Publication of EP3116067A1 publication Critical patent/EP3116067A1/fr
Application granted granted Critical
Publication of EP3116067B1 publication Critical patent/EP3116067B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22Bases, e.g. strip, block, panel
    • H01R9/24Terminal blocks
    • H01R9/2458Electrical interconnections between terminal blocks
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-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
    • H01R4/28Clamped connections, spring connections
    • H01R4/48Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/48185Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
    • H01R4/4819Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end the spring shape allowing insertion of the conductor end when the spring is unbiased
    • H01R4/4821Single-blade spring
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-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
    • H01R4/28Clamped connections, spring connections
    • H01R4/48Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4828Spring-activating arrangements mounted on or integrally formed with the spring housing
    • H01R4/483Pivoting arrangements, e.g. lever pushing on the spring

Definitions

  • the invention is based on a connecting device which has at least one service switching device with a housing and with at least one screwless terminal and at least one connecting element, wherein the connecting element has at least one connecting conductor with at least one contact lug arranged thereon, according to the preamble of claim 1.
  • connection element that can be used in a generic connection device is a busbar.
  • a bus bar is a device for simultaneously electrically connecting a plurality of juxtaposed terminals of one or more stacked service switching devices.
  • the pole rail of the busbar and of the pole rail usually approximately comb-like protruding tabs are made of a rigid and electrically highly conductive material, a rigid guide plate, for example, preferably made of copper or a highly conductive copper alloy.
  • the pole rail is accommodated in an insulating profile from which the contact lugs protrude through openings at the points provided for this purpose.
  • connection element that can be used in a generic connection device is a connector.
  • Connectors are used to establish an electrical connection between the terminals, for example, a motor protection switch and a contactor.
  • a connector for connecting two three-phase devices has three Connecting conductors, which can be arranged together in an insulating material housing, projecting from each connecting conductor two tabs, one for insertion into the terminal of the motor protection switch and one for insertion into the terminal of the contactor.
  • connection element that can be used in a generic connection device for the electrical connection of a three-pole contactor is a so-called turning connector.
  • This is in principle a three-pole connector in which the connection conductors between the individual poles of the two devices to be connected are arranged so that the direction of rotation of a connected motor reverses.
  • connection of a connecting element takes place in two steps. First, the connecting element is placed on the open screw terminals, while the contact lugs of the busbar are inserted into the open screw terminals. Then the clamping screws are tightened one by one.
  • the spring clamp has a clamping frame and an approximately ⁇ -shaped clamping spring, which has a support wing, a clamping wing with slot for clamping the connecting conductor and a loop which forms a spring and connects the support with the clamping wing.
  • a clamping screw known as a cage spring clamp assembly
  • the spring clamp has a clamping frame and an approximately ⁇ -shaped clamping spring, which has a support wing, a clamping wing with slot for clamping the connecting conductor and a loop which forms a spring and connects the support with the clamping wing.
  • the restoring spring force of the loop retracts the clamping wing and the lead is clamped in the slot.
  • the clamping force is adjusted reproducibly by the spring force of the spring loop and no longer dependent on the torque with which the installer attracts the clamping screw.
  • the tool is again required to press the clamping wing back into its open position.
  • the clamp is of the type having at least one clamping spring acting as a compression spring on a clamping point of the contact lug for clamping the contact lug and for pressing a contact point of the contact lug against a bus bar, and the connecting element is formed with a manually operable opening member upon actuation, the clamping spring presses away from the clamping point and thus allows removal of the contact lug from the clamp without the use of an additional tool.
  • the object is achieved according to the invention thus by two measures.
  • the first relates to the use of another type of screwless spring clip, namely of the type having at least one clamping spring acting as a compression spring on a clamping point of the contact lug for clamping a connecting conductor.
  • This type is also known as a spring-loaded clamp, also known in English as a "push-in" clamp.
  • a rigid connection conductor for example a contact lug
  • the spring pressure clamp has a support wing, a clamping wing for clamping the connection conductor or the contact lug at the free end of the clamping wing and a loop, which forms a spring and connects the support with the clamping wing.
  • a connector such as a bus bar with its plurality of adjacent rigid tabs, or even a male or female connector, can be easily inserted and clamped into a plurality of adjacent clamping apertures without the need for a tool.
  • the clamping end of the clamping wing When pressed, the clamping end of the clamping wing could be pressed into the material of the contact lug, in particular if it consists of a highly conductive copper alloy. The clamping end of the clamping wing could then catch a little in the contact lug. This can cause a pulling out of the busbar is no longer easy and only with considerable effort against the Verhakungswiderstand is possible, with repeated pulling the clamping spring or the contact lug could be damaged.
  • the second inventive measure is therefore to form the connecting element with a manually operable opening member which presses the clamping spring away from the clamping point upon actuation and thus allows removal of the contact lug from the terminal, without the use of an additional tool.
  • the connecting element has an insulating profile in which the one or more connecting conductors is embedded with the or the contact lugs or, so in an advantageous embodiment, the insulating profile is formed with the manually operable opening member.
  • the contact force at the clamping point may be loosened or the contact lug may be "shaken out" of the connection terminal.
  • the locking member prevents loose shaking of the connecting element.
  • the connecting element has an insulating profile in which the one or more connecting conductors is embedded with the or the contact lugs or, so in an advantageous embodiment, the insulating profile is formed with the manually operable opening member.
  • this can be realized in a busbar with insulating profile.
  • the locking member prevents here also a loose shaking the busbar total.
  • the locking member is formed to a releasable locking connection with the locking means on the housing, so that the connecting element, for example, the busbar or the connector or the turning connector can also be removed again.
  • An advantageous example of a locking member according to the invention is a locking lug on a resiliently clamped locking bar on one side, and the corresponding locking means on the housing can be in an advantageous example, a molded on the housing corresponding locking lug or a detent opening.
  • busbar with insulating profile is chosen and described here by way of example only and by way of example, the choice of this example is by no means meant to be limiting.
  • the idea of the invention described using the example of the busbar can be easily transferred to other connecting elements, in particular to plug connectors and reversing connectors, without the need for further figurative explanations.
  • FIG. 7 shows a connecting device 100 according to the invention.
  • this has two three-phase motor protection switches 1, 1 'arranged next to one another at their broad sides.
  • Each of the two motor protection switches 1, 1 ' has three access terminals 3, 4, 5, 3', 4 ', 5' and in each case opposite three outgoing terminals, in the figure only two can be seen, with the reference numerals 6, 7.
  • a busbar 8 to be infected The busbar 8 has an insulating profile 9, in which a pole rail 10 (see FIG. 8 ) is arranged on the comb-like six contact lugs 11, 12, 13, 14, 15, 16 are formed and projecting perpendicular to the longitudinal direction of the pole rail.
  • the busbar 8 is attached to the contact lugs 11, 12, 13, 14, 15, 16 ahead perpendicular to the front side 17 of the motor protection switch, the tabs then engage in the terminal openings one.
  • FIG. 8 shows in a detail view one of the terminals from diagonally above.
  • the insulating profile is here removed from the busbar, you can see the pole rail 10 and two of the contact lugs 12, 13.
  • the terminal is a spring plug terminal as a clamping spring 40. It can be seen the upper part of the loop 18 and a portion of the clamping wing 19th
  • the contact lugs 12 and 13 are located shortly before insertion into the respective terminal openings.
  • FIG. 1 shows schematically and exemplarily a cross section through a part of the connecting device 100 as in FIG. 7 and 8th shown.
  • an insertion opening 28 is formed for inserting the contact lug 11 of the busbar 8 to the Clamping point in the direction of arrow P.
  • the nip is formed by a spring plug terminal.
  • This has a clamping spring 40 with a support wing 25, a clamping wing 19 and a loop 18 which connects the clamping wing 19 with the support wing 25 and which forms a spring and causes the restoring spring force on the clamping wing 19.
  • the clamping wing 19 has a slight kink, its terminal end 24 is slightly upwards, to the front side 21, bent.
  • the clamping spring 40 With the support wing 25, the clamping spring 40 is supported on a support rail 26 in the interior of the service switching device 1. With the clamping end 24, the clamping spring 40 presses an inserted connecting conductor, for example the contact lug 11, against a busbar 27. The electrical contact takes place between the busbar 27 and the contact lug 11, see FIG.
  • the busbar 27 and the support rail 26 may be parts of a common terminal frame, but they may also be designed as individual parts.
  • the support rail 26 could also be designed as a housing projection.
  • At the power rail 27 further conductor pieces are then connected inside the service switching device, which continue the current path from the terminal point inside the service switching device 1.
  • busbar 8 and the motor protection switch 1 are still separated from each other.
  • the busbar 8 can be inserted into the insertion opening 28 in the direction of the arrow P, with the contact lug 11 in the forward direction become.
  • FIG. 2 shows the state in which the busbar 8 is inserted with the contact lug 11 ahead in the insertion opening 28.
  • the contact lug 11 pushes the clamping end 24 of the clamping spring 40 away.
  • the free end of the contact lug 11 has a flat side, which slides along the busbar 27, which is also formed with a flat surface.
  • FIG. 2 presses the clamping end 24 of the clamping wing 19 against the clamping wing 19 side facing the tail of the contact lug 11.
  • the area in which the clamping end 24 rests against the contact lug 11 is referred to as a nip 29.
  • a contact point 30 Due to the pressure effect of the clamping end 24 of the clamping wing 19 on the contact lug 11 of the nip 29 opposite side of the contact lug 11 is pressed flat against the busbar 27.
  • the region in which the clamping point 29 opposite side of the contact lug 11 bears flat against the busbar 27 is referred to as a contact point 30.
  • the electrical contact between the contact lug 11 and the bus bar 27 takes place. There, the current flows from the contact lug 11 into the service switching device 1 or out of the service switching device 1 in the contact lug 11 out. At the contact point 30 should therefore prevail a low electrical contact resistance. If the pole rail with the contact lugs 11 made of a highly conductive material, such as copper or a copper alloy, that is reachable at a sufficiently large contact pressure from the side of the clamping spring 40 and the clamping end 24 forth on the nip 29.
  • a highly conductive material such as copper or a copper alloy
  • a spring steel used for the production of the clamping spring 40 is usually not a good electrical conductor, it is specially optimized in terms of its elastic properties.
  • the clamping end 24 of the clamping spring 40 can be cut into the contact lug 11 in the region of the clamping point 29, which is made of a highly conductive but less hard material. It then finds a clawing of the terminal end 24 of the clamping wing 19 of the clamping spring 40 instead. The busbar could then be pulled out of the insertion opening 28 only with increased effort again, possibly would be repeated pulling out and the clamping spring 40 or the Contact lug 11 damage.
  • the insulating profile 9 is formed with a manually operable opening member 35 which presses the clamping end 24 of the clamping spring away from the nip 29 on actuation and thus allows removal of the contact lug 11 from the terminal without the use of an additional tool.
  • the insulating profile 9 is formed with a manually operable opening member, as it is merely exemplary in the Figures 1 - 3 is shown.
  • the opening member 35 is formed in the example in the form of a Doppelarmhebels 35 here. Whose pivot axis 36 is located on a Anformung 37 on the insulating 9, which protrudes from the insulating section 9 a piece. As a result, one of the insulating profile 9 spaced, firmly connected to the insulating profile 9 pivot point for the double arm 35 is created, which allows pivoting to the insulating 9 and out of the insulating 9 away.
  • a first arm 38 of the double-armed lever 35 extends approximately parallel to the contact lug 11 in the direction of the clamping wing 19 of the clamping spring 40.
  • a second arm 39 of the double-armed lever 35 extends into the space outside of the insulating profile 9 and is operable with inserted busbar 8 from the outside by hand.
  • the second arm 39 is slightly angled so that it is better to reach it with a finger for actuation.
  • FIG. 1 shows the busbar separate from the service switching device.
  • FIG. 2 shows the busbar 8 plugged onto the insertion opening 28 of the service switching device 1.
  • the free end of the first arm 38 of the opening member 35 terminates in this case just before the clamping wing 19 of the clamping spring 40th
  • FIG. 3 Pressure on the second arm 39 in the direction of arrow D pivots the first arm 38 in a clockwise direction, this presses the clamping end 24 of the clamping wing 19 away from the clamping point 29, indicated by the arrow F, and the contact lug 11 can be pulled upwards, see arrow E.
  • FIGS. 4 to 6 differs from that in the FIGS. 1-3 shown embodiment in that here the insulating profile 9 is additionally formed with a locking member 31, which with a matching detent element 32 on the housing of the service switching device 1, here in the example on the rear narrow side 23, cooperating latching, when the clamping spring 40 with the clamping end 24, the contact lug 11 clamped at the terminal point 29 and presses against the contact rail 30 to the busbar 27.
  • the locking member 31 is a latching lug 33 on a one-sided resiliently clamped locking bar 34.
  • the corresponding latching element 32 on the housing is formed on the housing corresponding latching lug or a latching opening (not shown in the figure).
  • the locking member 31 in engagement with the locking element 32 prevents shaking loose of the insulating 9 and thus also shaking loose the busbar in an industrial environment, and thus supports the clamping action of the clamping end 24 of the clamping spring 40 on the contact lug 11.
  • the locking member 31 are tool bent away with one or more fingers, so that the locking lug 33 releases the locking element 32, and with the same hand or the other hand then the busbar 8 can be pulled out of the insertion opening 28.
  • Motor protection switch 23 rear narrow side 1' Motor protection switch 24 jammed 3 access terminal 25 supporting wing 3 ' access terminal 26 support rail 4 access terminal 27 conductor rail 4 ' access terminal 28 insertion opening 5 access terminal 29 nip 5 ' access terminal 30 contact point 6 outgoing terminal 31 detent member 7 outgoing terminal 32 locking element 8th bus 33 locking lug 9 insulating profile 34 Rest bar 10 pole bus 35 opening member 11 contact tag 36 swivel axis 12 contact tag 37 conformation 13 contact tag 38 first arm 14 contact tag 39 second arm 15 contact tag 40 clamping spring 16 contact tag 100 connecting device 17 front P arrow 18 loop D arrow 19 clamping wing e arrow 20 front front F arrow 21 rear front 22 front narrow side

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
EP16174157.4A 2015-07-10 2016-06-13 Dispositif de connexion comprenant une borne enfichable Active EP3116067B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015111229 2015-07-10
DE102016110189.3A DE102016110189B4 (de) 2015-07-10 2016-06-02 Verbindungsvorrichtung mit Steckklemme

Publications (2)

Publication Number Publication Date
EP3116067A1 true EP3116067A1 (fr) 2017-01-11
EP3116067B1 EP3116067B1 (fr) 2024-02-28

Family

ID=56119419

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16174157.4A Active EP3116067B1 (fr) 2015-07-10 2016-06-13 Dispositif de connexion comprenant une borne enfichable

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EP (1) EP3116067B1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20101435U1 (de) * 2001-01-26 2002-06-06 ABL SURSUM Bayerische Elektrozubehör GmbH & Co. KG, 91207 Lauf Elektrogerät mit Anschlüssen für Einzeldraht und Sammelschiene
EP0928043B1 (fr) 1997-12-29 2006-04-12 Schneider Electric Industries SAS Dispositif de connexion à cage élastique
DE202010008028U1 (de) * 2009-07-18 2010-12-30 Weidmüller Interface GmbH & Co. KG Anschlussvorrichtung für Leiter
EP2482385A1 (fr) * 2011-01-31 2012-08-01 Hager-Electro SAS Appareils électriques dotés de moyens de maintien d'un dispositif de pontage
DE202014103797U1 (de) * 2013-08-27 2014-11-28 Weidmüller Interface GmbH & Co. KG Federkraftklemme für Leiter

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004018757U1 (de) * 2004-12-04 2006-04-13 Weidmüller Interface GmbH & Co. KG Vorrichtung zur elektrischen Überbrückung zweier Stromschienen
DE102008046067B3 (de) * 2008-08-05 2010-04-08 Abb Ag Installationsschaltgerät mit einem schraubenlosen Klemmanschluss

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0928043B1 (fr) 1997-12-29 2006-04-12 Schneider Electric Industries SAS Dispositif de connexion à cage élastique
DE20101435U1 (de) * 2001-01-26 2002-06-06 ABL SURSUM Bayerische Elektrozubehör GmbH & Co. KG, 91207 Lauf Elektrogerät mit Anschlüssen für Einzeldraht und Sammelschiene
DE202010008028U1 (de) * 2009-07-18 2010-12-30 Weidmüller Interface GmbH & Co. KG Anschlussvorrichtung für Leiter
EP2482385A1 (fr) * 2011-01-31 2012-08-01 Hager-Electro SAS Appareils électriques dotés de moyens de maintien d'un dispositif de pontage
DE202014103797U1 (de) * 2013-08-27 2014-11-28 Weidmüller Interface GmbH & Co. KG Federkraftklemme für Leiter

Also Published As

Publication number Publication date
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