EP3118933B1 - Dispositif de connexion comprenant une borne enfichable - Google Patents

Dispositif de connexion comprenant une borne enfichable Download PDF

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Publication number
EP3118933B1
EP3118933B1 EP16174927.0A EP16174927A EP3118933B1 EP 3118933 B1 EP3118933 B1 EP 3118933B1 EP 16174927 A EP16174927 A EP 16174927A EP 3118933 B1 EP3118933 B1 EP 3118933B1
Authority
EP
European Patent Office
Prior art keywords
clamping
contact
busbar
contact lug
latching
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.)
Active
Application number
EP16174927.0A
Other languages
German (de)
English (en)
Other versions
EP3118933A1 (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 DE102016110174.5A external-priority patent/DE102016110174A1/de
Application filed by ABB Schweiz AG filed Critical ABB Schweiz AG
Publication of EP3118933A1 publication Critical patent/EP3118933A1/fr
Application granted granted Critical
Publication of EP3118933B1 publication Critical patent/EP3118933B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural 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
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting
    • H01R9/2625—Clip-on terminal blocks for side-by-side rail- or strip-mounting with built-in electrical component
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
    • 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
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/48185—Clamped 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
    • H01R4/4819—Clamped 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
    • H01R4/4821—Single-blade spring
    • 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
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4828—Spring-activating arrangements mounted on or integrally formed with the spring housing
    • H01R4/483—Pivoting arrangements, e.g. lever pushing on the spring
    • 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

Definitions

  • the invention is based on a connecting device according to the preamble of claim 1.
  • Such a generic connecting device is known in connection with circuit breakers, residual current circuit breakers, motor protection switches, relays or contactors, in particular for use in distributors or switchgear in industrial use, for example in the power supply or control of motors or in low-voltage switchgear.
  • An example of a connecting element that can be used in a generic connecting device is a busbar.
  • a busbar is a device for simultaneously electrically connecting a plurality of terminals of one or more lined-up installation switching devices to one another.
  • the pole bar of the busbar and the contact lugs that protrude from the pole bar mostly in a comb-like manner are made of a rigid and electrically highly conductive material, for example a rigid conducting plate, preferably made of copper or a copper alloy with good conductivity.
  • the pole bar is accommodated in an insulating profile, from which the contact lugs protrude through openings at the points provided for this purpose.
  • Connectors are used to establish an electrical connection between the terminals of a motor protection switch and a contactor, for example.
  • a connector for connecting two three-phase devices has, for example, three connecting conductors, which can be arranged together in an insulating housing, with two contact lugs protruding from each connecting conductor, one for insertion into the connection terminal of the motor protection switch and one for insertion into the connection terminal of the contactor.
  • a further example of a connecting element that can be used in a generic connecting device for the electrical connection of a three-pole contactor is a so-called reversing connector.
  • this is a three-pole connector in which the connecting conductors between the individual poles of the two devices to be connected are arranged in such a way that the direction of rotation of a connected motor is reversed.
  • connection element is connected in two steps. First, the connecting element is placed on the open screw terminals, with the contact lugs being inserted into the open screw terminals. After that, one after the other clamping screws tightened.
  • the spring-loaded terminal has a clamping frame and an approximately ⁇ -shaped clamping spring that has a support wing, a clamping wing with a slot for clamping the connecting conductor and a loop that forms a spring and connects the support to the clamping wing.
  • the DE 10 2010 012 820 A1 shows a conductor entry plug with a handle section and at least one conductive plug section for insertion into a conductor entry opening of a spring-loaded terminal, which has an insulating material housing with at least one busbar inserted therein and at least one clamping spring, the clamping spring having a clamping edge that is at an acute angle on a in the conductor entry opening plugged-in electrical conductor and forms a clamping point for the electrical conductor together with an opposite section of the busbar, with the plug section located outside the grip section having at least two layers at least on a contact area provided for contact with the clamping spring, with a first layer facing the clamping spring consisting of one first metallic material and a second layer facing the busbar is formed from a second metallic material.
  • the WO 2010/015308 A1 shows an installation switching device, with a housing, and with a screwless terminal connection with a clamping spring for connecting connecting conductors, which is fixed in position in a terminal connection space of the housing, the terminal connection space through the housing broad sides is laterally delimited, and wherein the opening of the terminal connection space can be covered by a terminal cover part which is pivotably connected to the housing and has a number of connection openings corresponding to the number of connecting conductors to be connected and which can open the clamping spring when it is pivoted in the direction of the interior of the housing.
  • the terminal cover part includes a spacer which, in a detent position, limits the pivoting path of the terminal cover part in the direction of the clamping spring and releases this in a release position for opening the clamping spring
  • the FR 2 713 832 shows a connecting device with an insulating housing, which has an inner housing in which at least two stripped conductor ends can be clamped between a fixed and a movable contact lamella by a clamping screw.
  • the device is characterized in that the movable contact blade is formed by a flexible piece of metal at one end of a fixing projection in the inner wall of the housing facing the fixed blade, having at the other end a terminal portion with parallel slots made in the movable lamina define a plurality of independent fingers such that under the action of the clamping screw on the surface of the movable lamina opposite the fingers, these fingers independently press the conductor ends against the fixed lamina.
  • connection element to or from a plurality of lined-up screwless terminal connections of lined-up installation switching devices is made possible.
  • the terminal is of the type that has 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 on a busbar, and the contact lug is at least in the area in which the clamping spring presses on the terminal point, hardened and thus has a greater surface hardness there than at least at the contact point, so that the clamping spring is prevented from cutting into the contact lug in the area of the terminal point.
  • the object is thus achieved according to the invention by two measures.
  • the first relates to the use of another type of screwless spring clamp, namely the type which has at least one clamping spring acting as a compression spring on a clamping point of the contact tab for clamping a connecting conductor.
  • This type is also known as a spring-loaded clamp, also known as a "push-in" clamp.
  • a spring-loaded clamp also known as a "push-in" clamp.
  • the spring-loaded terminal 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 that forms a spring and connects the support to the clamping wing.
  • a connecting element for example a busbar with its plurality of adjacent rigid contact lugs or a plug connector or a reversible connector can be easily inserted into a plurality of terminal openings arranged next to one another and clamped without the need for a tool.
  • the clamping end of the clamping wing When pressing on, the clamping end of the clamping wing could press into the material of the contact lug, especially if it consists of a copper alloy with good conductivity. The clamping end of the clamping wing could then get caught a little in the contact lug. This can mean that it is no longer easy to pull out the busbar without an additional tool and it is only possible with considerable effort against the interlocking resistance, with repeated pulling out the clamping spring or the contact lug being damaged. In order to pull out the busbar, it could then be necessary to first press each clamping spring a little further away from the contact lug, using a tool.
  • the second inventive measure is therefore that the contact lug has a greater surface hardness in the area in which the clamping spring presses on the clamping point than in the rest of the contact lug, in particular than at the contact point at which the contact lug is pressed on the busbar.
  • the contact lug consists of a copper alloy with good electrical conductivity but which is mechanically rather soft
  • the surface is hardened according to the invention in the area in which the clamping spring presses on the clamping point.
  • the advantageous effect is that in this hardened surface area, the clamping end of the clamping spring cannot press into the material, so the clamping end of the clamping wing no longer gets caught, and consequently the busbar can also be pulled out again without tools.
  • the surface at a locally limited place to harden is sufficient for this advantageous effect, the surface at a locally limited place to harden. Electrical conductivity may be reduced in the hardened area, depending on how hardened it was. This is not a disadvantage, however, since the contact point at which the contact lug is pressed on the conductor rail is not hardened and the good electrical conductivity of the material of the contact lug is therefore retained where a low electrical contact resistance is important. The surface of the contact lug is only hardened at the point where good mechanical hardness is important but good electrical conductivity is not.
  • the hardening on the surface takes place in such a way that a plate of a different, hard material is placed on the surface of the contact lug or embedded in the surface in the relevant area.
  • the other, hard material is a less electrically conductive material, such as stainless steel, or a non-conductor.
  • the remaining volume of the contact lug and in particular the surface on the side facing the busbar consists of an electrically highly conductive material, for example copper or brass.
  • the contact lug is a metal strip made of two layers of metals of different hardness and conductivity, which are connected to one another in a materially or form-fitting manner, with a first layer with the greater hardness facing the clamping end of the clamping spring, and the second layer with the facing greater electrical conductivity of the busbar.
  • the first layer can be made of stainless steel and the second layer of copper or brass.
  • such a contact lug according to this embodiment is designed similarly to a bimetallic strip, although materials with a similar coefficient of thermal expansion are used as far as possible in order to avoid temperature-related bending of the contact lug.
  • the connecting element In order to be able to easily remove the connecting element again even in such an unfavorable operating situation without an additional tool, in an advantageous development of the invention proposed to form the connecting element with a manually operable opening element which, when actuated, pushes the clamping spring away from the terminal point and thus enables the contact lug to be removed from the terminal without the use of an additional tool. If the connecting element has an insulating profile in which the connecting conductor or conductors with the contact lug or lugs is or are embedded, then in an advantageous further development the insulating profile is designed with the opening member that can be actuated by hand.
  • the connecting element When operating a connecting device according to the invention in an industrial environment, under unfavorable circumstances, for example due to strong vibrations, the pressure force at the terminal point could be loosened or the contact lug could “shake out” of the connection terminal.
  • the latching element prevents the connecting element from shaking loose.
  • the connecting element has an insulating profile in which the connecting conductor or conductors with the contact lug or lugs is or are embedded, then in an advantageous further development the insulating profile is designed with the opening member that can be actuated by hand. For example, this can be implemented with a busbar with an insulating profile.
  • the latching element also prevents the busbar from shaking loose as a whole.
  • the latching element is designed for a detachable latching connection with the latching means on the housing, so that the connecting element, for example the busbar with the insulating profile, can also be removed again.
  • An advantageous example of a locking element according to the invention is a locking lug on a locking bar clamped resiliently on one side, and the corresponding locking means on the housing can in an advantageous example be a corresponding locking lug or a locking opening molded onto the housing.
  • busbar with an insulating profile is only selected and described here as an example and as an example; the choice of this example is in no way meant to be restrictive.
  • inventive idea described using the example of the busbar can easily be transferred to other connecting elements, in particular to plug connectors and reversible connectors, without the need for further explanations of the figures.
  • the figure 11 shows a connecting device 100 according to the invention.
  • it has two three-phase motor protection switches 1, 1' lined up on their broad sides.
  • Each of the two motor protection switches 1, 1' has three access terminals 3, 4, 5, 3', 4', 5' and three output terminals opposite each other, only two can be seen in the figure, with the reference numbers 6, 7.
  • On the access side a busbar 8 is to be plugged in.
  • the busbar 8 has an insulating profile 9, in which a pole bar 10 (see figure 12 ) is arranged, on which six contact lugs 11, 12, 13, 14, 15, 16 are formed in a comb-like manner and protrude perpendicularly to the longitudinal direction of the pole rail.
  • the contact lugs then engage in the terminal openings.
  • figure 12 shows a detailed view of one of the connection terminals diagonally from above.
  • the insulating profile has been removed from the busbar here, you can see the pole bar 10 and two of the contact lugs 12, 13.
  • the connection terminal is a plug-in spring terminal as a clamping spring 40. You can see the upper part of the loop 18 and part of the clamping wing 19.
  • the contact lug 12 is just before it is inserted into the terminal opening.
  • FIG. 12 shows, schematically and by way of example, a cross section through part of the connecting device 100 as shown in FIG. Part of the housing of the motor protection switch 1 can be seen: the front side 20, the rear front side 21, the front narrow side 22, the rear narrow side 23.
  • An insertion opening 28 is formed on the rear narrow side 21 for inserting the contact lug 11 of the busbar 8 to the Terminal point in the direction of arrow P.
  • the terminal point is formed by a spring clip 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 to the support wing 25 and which forms a spring and causes the restoring spring force on the clamping wing.
  • the clamping wing 19 has a slight kink, its terminal end 24 is slightly upwards towards the front 21, bent.
  • the clamping spring 40 is supported with the support wing 25 on a support rail 26 inside the service switching device 1 . With the terminal end 24, the clamping spring 40 presses an inserted connection 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 figure 2 .
  • the conductor rail 27 and the support rail 26 can be parts of a common terminal frame, but they can also be designed as individual parts.
  • the support rail 26 could also be designed as a housing projection. Further conductor sections inside the service switching device 1 are then connected to the conductor rail 27 and continue the current path from the clamping 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 first.
  • figure 2 shows the state in which the busbar 8 is inserted into the insertion opening 28 with the tab 11 first.
  • the clamping end 24 of the clamping wing 19 presses against one side of the contact tab 11.
  • the area in which the terminal end 11 rests against the contact tab 11 is referred to as the terminal point 29.
  • the pressure effect of the clamping end 24 of the clamping wing 19 on the contact lug 11 presses the side of the contact lug 11 opposite the clamping point 29 flat against the busbar 27 .
  • the area in which the side of the contact lug 11 opposite the clamping point 29 lies flat against the busbar 27 is referred to as the contact point 30 .
  • the electrical contact between the pole rail 10 and the busbar 27 takes place at the contact point 30. There the current flows from the pole rail into the installation switching device 1 or out of the installation switching device 1 into the pole rail. A low electrical contact resistance should therefore prevail at the contact point 30 . If the pole bar with the contact lugs 11 consists of a highly conductive material, for example copper or a copper alloy, this can be achieved with a sufficiently large contact pressure from the clamping spring and its clamping end on the clamping point.
  • a spring steel used for the production of the clamping spring 40 is usually not a good electrical conductor; it is specially optimized with regard to its spring-elastic properties.
  • the contact lug 11 has a greater surface hardness in the area in which the clamping spring with the clamping end 24 presses on the clamping point 29 than at least at the contact point 30.
  • the area with the greater surface hardness is colored black in the figures here in the example Area 29 shown.
  • the advantageous effect is that the clamping end 24 of the clamping spring is prevented from cutting into the contact lug 11 made of a highly conductive but less hard material in the region of the clamping point 29 .
  • the busbar can therefore also be pulled out of the insertion opening 28 without any problems, without a tool being required to bend the clamping wing 19 back.
  • the terminal end 24 will simply slide on the hard surface of the portion 29 as it is withdrawn.
  • the hardening of the surface in area 29, the clamping point can be brought about in the example by placing a plate of another, hard material on the surface the contact lug 11 is placed in the area 19 or embedded in the surface of the contact lug 11 in the area 19 .
  • the other, hard material can be an electrically poorly conductive material or a non-conductor.
  • Other methods of surface hardening known in principle can also be used in order to produce a higher surface hardness at least in area 29, the clamping point, than in the area of contact point 30.
  • the hardened area 29 is shown here as a spatially limited area. This is also sufficient to fulfill the advantageous function according to the invention.
  • the hardened area 29 can of course also be larger than shown here in the example in the figures; it could even extend over the entire one broad side of the contact lug 11 . It is important that in the remaining volume of the contact lug 11 and the pole rail 10 and at the contact point 30 the material of the pole rail and the contact lug 11 has a high electrical conductivity.
  • the contact lug 11' is a metal strip made of two layers 29', 29" of metals of different hardness and conductivity, which are connected to one another in a materially bonded or form-fitting manner, with a first layer 29' having the greater hardness being attached to the clamping end 24 of the clamping spring 40 faces, and the second layer 29" with the greater electrical conductivity faces the busbar 27.
  • the first layer 29′ can be made of stainless steel and the second layer 29′′ can be made of copper or brass.
  • such a contact tab 11′ is constructed similarly to a bimetallic strip, although materials with a similar coefficient of thermal expansion are used as far as possible in order to to avoid temperature-related bending of the contact lug 11'.
  • the insulating profile 9 is designed with a latching element 31, which interacts in a latching manner with a latching element 32 adapted thereto on the housing of the installation switching device, here in the example on the rear narrow side 23, when the clamping spring with the clamping end 24 the contact lug 11 is clamped at the terminal point 29 and presses on the contact point 30 to the busbar 27.
  • the locking member 31 is a locking lug 33 on a one-sided resiliently clamped Latching bar 34.
  • the latching element 32 on the housing that corresponds thereto is a corresponding latching lug or latching opening (not shown here in the figure) formed on the housing.
  • the latching element 31 in latching with the latching element 32 prevents the insulating profile 9 and thus also the busbar from shaking loose in an industrial environment, and thus supports the clamping effect of the clamping end 24 of the clamping spring 40 on the contact lug 11.
  • the latching element 31 can be bent away without tools using one or more fingers, so that the latching lug 33 releases the latching element 32, and the busbar 8 can then be pulled out of the insertion opening 28 with the same hand or the other hand.
  • FIGS figures 1 and 2 differs from that in FIGS figures 1 and 2
  • the insulating profile 9 is designed with an opening element 35 that can be actuated by hand, which, when actuated, pushes the clamping end 24 of the clamping spring away from the clamping point 29 and thus enables the contact lug 11 to be removed from the clamp without the use of an additional tool.
  • This is advantageous since, under unfavorable circumstances, the clamping wing 19 could stick or otherwise adhere to the contact lug 11 during long-lasting operation of a connecting device 100 according to the invention, making it difficult for the busbar 8 to be pulled out.
  • the insulating profile 9 is designed with an opening element that can be actuated by hand, as is only shown by way of example in FIGS Figures 8 - 10 is shown.
  • the opening element 35 is designed in the form of a double-armed lever 35 .
  • Its pivot axis 36 is located on a projection 37 on the insulating profile 9, which protrudes a little from the insulating profile 9.
  • a first arm 38 of the double-armed lever 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 extends into the space outside the insulating profile 9 and is with the busbar inserted externally operable by hand. In the embodiment shown here, which is only given as an example, the second arm is slightly angled so that it is easier to reach with a finger for actuation.
  • figure 8 shows the busbar separated from the installation switching device 1.
  • figure 9 shows the busbar 8 attached to the insertion opening 28 of the installation switching device 1.
  • the free end of the first arm 38 of the opening element 35 ends here just before the clamping wing 19 of the clamping spring 40.
  • FIG 10 shows the situation when the opening device is actuated. Pressure on the second arm 39 in the direction of arrow D pivots the first arm 38 clockwise, this pushes the clamping end 24 of the clamping wing 19 away from the clamping point, indicated by the arrow E, and the contact lug 11 can be pulled out upwards, see Arrow F
  • FIG. 3 - 5 considered.
  • the insulating profile 9 is both with a manually operable opening member 35, as in connection with the Figures 8 - 10 explained, formed, as well as additionally with a latching member 31 which cooperates latching with a latching element 32 adapted thereto on the housing of the installation switching device, as in connection with the figures 6 and 7 already explained above.
  • the contact lug can in each case be designed as a metal strip made of two layers of metals of different hardness and conductivity, which are connected to one another in a materially bonded or form-fitting manner, with a first layer with the greater hardness facing the clamping end of the clamping spring 40, and the second layer facing the greater electrical conductivity of the busbar, according to the in figures 13 and 14 illustrated manner.
  • a figurative representation of this should be dispensed with.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)

Claims (9)

  1. Dispositif de connexion (100), qui présente au moins un appareil de commutation d'installation (1) comprenant un boîtier et comprenant au moins une borne sans vis et au moins un élément de connexion (8),
    l'élément de connexion (8) ayant au moins un conducteur de connexion (10) comprenant au moins un talon de contact (11) agencé sur celui-ci,
    la borne étant du type qui présente au moins un ressort de serrage (40) agissant en tant que ressort de pression sur un point de serrage (29) du talon de contact (11) pour bloquer par serrage le talon de contact (11) et pour presser un point de contact (30) du talon de contact (11) sur une barre conductrice (27), et
    le talon de contact (11) présentant, au moins dans la zone dans laquelle le ressort de serrage (40) appuie sur le point de serrage (29), une dureté de surface plus élevée qu'au moins au point de contact (30), de telle sorte qu'une incision du ressort de serrage (40) dans le talon de contact (11) est empêchée dans la zone du point de serrage (29),
    caractérisé en ce que
    dans la zone dans laquelle le ressort de serrage (40) appuie sur le point de serrage (29), une plaque d'un autre matériau dur est placée sur la surface du talon de contact (11) ou est encastrée dans la surface, et
    l'autre matériau dur est matériau moins bon conducteur ou un non-conducteur.
  2. Dispositif de connexion (100) selon la revendication 1, caractérisé en ce que le talon de contact (11) est une bande métallique composée de deux couches (29', 29") de métaux de dureté différente et de conductivité différente, qui sont reliées l'une à l'autre par accouplement de matière ou par accouplement de forme, une première couche (29') de dureté plus élevée étant tournée vers l'extrémité de serrage (24) du ressort de serrage (40), et la deuxième couche (29") de conductivité électrique plus élevée étant tournée vers la barre conductrice (27).
  3. Dispositif de connexion (100) selon la revendication 2, caractérisé en ce que la première couche (29') est en acier inoxydable et la deuxième couche (29") est en cuivre ou en laiton.
  4. Dispositif de connexion (100) selon la revendication 1, caractérisé en ce que l'élément de liaison (8) est configuré avec un organe d'ouverture (35) actionnable à la main qui, lorsqu'il est actionné, pousse le ressort de serrage (40) à l'écart du point de serrage (29) et permet ainsi de retirer le talon de contact (11) de la borne sans utiliser d'outil supplémentaire.
  5. Dispositif de connexion (100) selon la revendication 1, caractérisé en ce que l'élément de connexion (8) est configuré avec un organe d'encliquetage (31), qui coopère par encliquetage avec un élément d'encliquetage (32) adapté à celui-ci sur le boîtier de l'appareil de commutation d'installation (1) lorsque le ressort de serrage (40) bloque par serrage le talon de contact (11) au niveau du point de serrage (29) et le presse contre la barre conductrice (27) au niveau du point de contact (30).
  6. Dispositif de connexion (100) selon la revendication 5, caractérisé en ce que l'organe d'encliquetage (31) est un bec d'encliquetage (33) sur une barre d'encliquetage (34) tendue par ressort d'un côté, et en ce que l'élément d'encliquetage (32) correspondant à celui-ci sur le boîtier est un bec d'encliquetage correspondant formé sur le boîtier ou une ouverture d'encliquetage.
  7. Dispositif de connexion (100) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de connexion (8) est une barre omnibus, qui a un profil isolant (9) et dans laquelle le conducteur de connexion est une barrette de connexion agencée dans le profil isolant (9).
  8. Dispositif de connexion (100) selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'élément de connexion est un connecteur enfichable pour établir une connexion électrique entre les bornes de raccordement d'un disjoncteur de protection de moteur et d'un contacteur.
  9. Dispositif de connexion (100) selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'élément de connexion est un connecteur à retournement.
EP16174927.0A 2015-07-10 2016-06-17 Dispositif de connexion comprenant une borne enfichable Active EP3118933B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015111226 2015-07-10
DE102016110174.5A DE102016110174A1 (de) 2015-07-10 2016-06-02 Verbindungsvorrichtung mit Steckklemme

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EP3118933A1 EP3118933A1 (fr) 2017-01-18
EP3118933B1 true EP3118933B1 (fr) 2022-02-16

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2713832B1 (fr) * 1993-12-08 1996-03-01 Francois Fischer Plot de connexion, notamment pour fils de lignes téléphoniques.
FR2773274B1 (fr) 1997-12-29 2000-02-11 Schneider Electric Sa Dispositif de connexion a cage elastique
DE102008046067B3 (de) * 2008-08-05 2010-04-08 Abb Ag Installationsschaltgerät mit einem schraubenlosen Klemmanschluss
DE102010012820B4 (de) * 2010-03-25 2012-08-23 Wago Verwaltungsgesellschaft Mbh Leitereinführungsstecker

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