WO2023170015A1 - Borne de connexion pour dispositif électrique - Google Patents

Borne de connexion pour dispositif électrique Download PDF

Info

Publication number
WO2023170015A1
WO2023170015A1 PCT/EP2023/055652 EP2023055652W WO2023170015A1 WO 2023170015 A1 WO2023170015 A1 WO 2023170015A1 EP 2023055652 W EP2023055652 W EP 2023055652W WO 2023170015 A1 WO2023170015 A1 WO 2023170015A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure piece
connection terminal
connecting sleeve
connection
base
Prior art date
Application number
PCT/EP2023/055652
Other languages
German (de)
English (en)
Inventor
Björn Tölle
Original Assignee
Phoenix Contact Gmbh & Co. Kg
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 LU501638A external-priority patent/LU501638B1/de
Priority claimed from DE102022132354.4A external-priority patent/DE102022132354A1/de
Application filed by Phoenix Contact Gmbh & Co. Kg filed Critical Phoenix Contact Gmbh & Co. Kg
Publication of WO2023170015A1 publication Critical patent/WO2023170015A1/fr

Links

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
    • H01R4/28—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
    • H01R4/4811—Spring details
    • H01R4/4816—Spring details the spring shape preventing insertion of the conductor end when the spring is unbiased
    • 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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/44—Means for preventing access to live contacts
    • H01R13/447—Shutter or cover plate
    • 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
    • H01R4/4833—Sliding arrangements, e.g. sliding button
    • 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

Definitions

  • the invention relates to a connection terminal for an electrical device according to the preamble of claim 1.
  • connection terminal comprises a connection sleeve which has a base and to which at least one electrical conductor and/or at least one busbar can be attached for electrical connection to the connection terminal.
  • One or more electrical conductors and/or one or more busbars can be connected to an electrical device via such a connection terminal.
  • An electrical device can have one or more connection terminals.
  • Such an electrical device can, for example, have a housing with a fastening device formed thereon. Via the fastening device, the electrical device can be arranged, for example, on a mounting rail and combined with further electrical devices lined up along a rowing direction on the mounting rail in order to create an assembly of electrical devices, for example in a control cabinet.
  • connection terminal can also be used on other electrical devices to which electrical lines and/or busbars are to be connected.
  • Such an electrical device can be, for example, a so-called FI circuit breaker or a circuit breaker.
  • connection terminal in the form of a screw terminal in which one or more conductors and / or one or more busbars are clamped to the connection terminal by a screw and therefore connected electrically.
  • a connection terminal for example, realizes a so-called double-chamber terminal, in which conductors and/or busbars can be connected to the connection terminal in two chambers.
  • a screw terminal enables reliable connection of conductors and/or busbars with high clamping force. With a screw clamp that creates a double chamber, the same clamping force can be reliably set in both chambers.
  • Such screw terminals can be constructed easily and with just a few components.
  • connection terminals should be particularly suitable for devices in control cabinets such as FI circuit breakers or circuit breakers.
  • the DE 10 2017 311 735 A1 describes a connection terminal for connecting an electrical line, in which a clamping lever can be adjusted via an adjusting element arranged on a housing in order to clamp the electrical line to the connection terminal.
  • the object of the present invention is to provide a connection terminal for an electrical device which enables simple, rapid connection of at least one electrical line and/or at least one busbar, with a simple design of the connection terminal.
  • connection terminal comprises a pressure piece which is guided on the connection terminal so as to be displaceable along an adjustment direction and which is adjustable between a clamping position and an opening position on the connection sleeve.
  • the connection terminal also includes a spring element which elastically prestresses the pressure piece relative to the connection sleeve and a lever element which is operatively connected to the pressure piece and which can be actuated to adjust the pressure piece between the clamping position and the open position.
  • the pressure piece is in the clamping position of the base of the connecting sleeve Clamping at least one conductor or at least one busbar on the connection terminal is approximated.
  • the pressure piece In the open position, the pressure piece is displaced on the connection sleeve in such a way that the pressure piece is removed from the base in comparison to the clamping position in order to enable at least one conductor or at least one busbar to be attached to the connection sleeve.
  • connection terminal In the connection terminal, a pressure piece is guided on a connection sleeve so that it can be moved along an adjustment direction. In a clamping position, the pressure piece assumes such a position on the connection sleeve that one or more electrical conductors and/or one or more busbars, which are attached to the connection sleeve, are clamped to the connection sleeve via the pressure piece and are thus connected to the connection terminal.
  • the pressure piece can be moved in the adjustment direction relative to the connection sleeve, so that the pressure piece is removed from the base of the connection sleeve, thereby releasing a space between the pressure piece and the base. In the open position of the pressure piece, conductors and/or busbars connected to the connection terminal can thus be removed from the connection terminal, or one or more conductors and/or one or more busbars can be connected to the connection terminal in a substantially powerless manner.
  • connection terminal With the connection terminal, conductors and/or busbars are connected by transferring the pressure piece from the open position to the clamping position.
  • the pressure piece In order to enable connection, the pressure piece is first brought into the open position and then, after the conductors and/or busbars have been attached, the pressure piece is moved back into the clamping position so that the conductors and/or busbars are clamped to the connecting sleeve.
  • the pressure piece When moving from the open position to the clamping position, the pressure piece is moved along the adjustment direction towards the base of the connecting sleeve, so that conductors and/or busbars attached to the connecting sleeve are clamped to the connecting terminal.
  • the pressure piece has a clamping effect on the conductors and/or busbars, so that a clamping force for fixing the conductors and/or busbars on the connection terminal is provided via the pressure piece in cooperation with the connecting sleeve.
  • the pressure piece is spring-loaded to the connecting sleeve via the spring element, the pressure piece can be transferred into the clamping position in a spring-assisted manner, with the pressure piece in the clamping position providing a clamping force on the conductors and/or the busbars under the spring force of the spring element, to clamp it to the connection terminal.
  • the pressure piece is moved from the clamping position into the open position via the lever element, which can be pivoted on the connecting terminal.
  • the pressure piece can be guided into the open position by pivoting the lever element, with the pressure piece returning to the clamping position by resetting the lever element, caused by the spring force of the spring element, in order to fix conductors and/or busbars on the connection terminal in this way.
  • connection terminal can create a (single) connection chamber or a double chamber. Using a double chamber, two (or more) conductors and/or busbars can be connected to different chambers on the connection terminal.
  • the connection terminal comprises a current bar for electrical contact with at least one conductor connected to the connection terminal or at least one bus bar connected to the connection terminal.
  • the current bar is preferably arranged between the pressure piece and the base and thus occupies an intermediate position between the pressure piece and the base.
  • the at least one conductor and/or the at least one busbar is electrically contacted with the current bar and an electrical connection is thus established.
  • the conductor and/or the busbar is pressed into contact with the current bar, so that the conductor and/or the busbar are electrically contacted and also mechanically fixed to the connection terminal.
  • a double chamber can be easily created on the connecting terminal. So can, in one Design of the connection terminal, a first conductor or a first busbar is connected to a first side of the current bar facing the pressure piece and a second conductor or a second busbar is connected to a second side of the current bar facing away from the first side and facing the base.
  • the current bar thus separates a space within the connection sleeve into a double chamber.
  • a first chamber is formed between the current bar and the pressure piece.
  • a second chamber is formed between the current bar and the base of the connection sleeve.
  • One or more conductors and/or one or more busbars can be inserted into each chamber in order to connect the conductors and/or the busbars to the connection terminal.
  • the pressure piece and the base are therefore also closer to the power bar, so that conductors and / or busbars are clamped between the power bar and the pressure piece on the one hand and between the power bar and the base on the other hand and thus on the connection terminal is connected. Because the clamping force is applied uniformly across the pressure piece, the same clamping force results in the chambers.
  • the current bar has, on the first side facing the pressure piece, a first contacting contour that widens in the direction of the pressure piece for contact with the first conductor or the first busbar and/or on the second side facing the base, a first contacting contour that extends in the direction of the Base widening, second contacting contour for contact with the second conductor or the second busbar.
  • a contacting contour can be formed by sections that extend obliquely to the adjustment direction and are offset transversely to one another.
  • the contacting contour widens towards the pressure piece or towards the base and thus has a funnel shape in cross section transverse to a plug-in direction (perpendicular to the adjustment direction) in which the conductors or the busbars are to be plugged into the connection terminal.
  • Such a contacting contour can also cause the conductor and/or the busbar to assume a defined, centered position on the current bar.
  • a distance between the busbar and a base body of the current bar can be adjusted, so that a preload force is increased by increased deflection of the spring element and thus the contact force is improved.
  • the current bar can also be flat, without such a contacting contour.
  • connection terminal has a prestressing element that elastically prestresses the connection sleeve relative to the current bar.
  • the biasing element (in addition to the spring element) can be designed, for example, by a mechanical spring.
  • the prestressing element can act directly between the connecting sleeve and the current bar in order to provide an elastic prestressing between the connecting sleeve and the prestressing element.
  • the prestressing element can also act between the connecting sleeve and a housing section in order to prestress the connecting sleeve relative to the housing and above (indirectly) to the current bar arranged in a stationary manner on the housing.
  • the prestressing of the prestressing element can act in particular in the direction of the clamping position, so that the connecting sleeve is loaded relative to the current bar in the direction of the clamping position.
  • the lever element can be pivoted to the connecting sleeve about a pivot axis perpendicular to the adjustment direction.
  • the lever element can, for example, be pivotally mounted on the connecting sleeve, so that the lever element is adjusted to adjust the pressure piece on the connecting sleeve.
  • the lever element is in operative connection with the pressure piece via an active section, so that when the lever element is pivoted, the pressure piece is displaced longitudinally along the adjustment direction on the connecting sleeve.
  • the base extends transversely to the adjustment direction.
  • One or more connection chambers are created between the base and the pressure piece, into which one or more conductors and/or one or more busbars can be inserted for connection to the connection terminal and in which the conductors and/or the busbars are clamped in the clamping position of the pressure piece are.
  • the connecting sleeve has two legs extending from the base along the adjustment direction.
  • the pressure piece is preferably guided between the legs.
  • the legs are connected to each other via the base so that the connecting sleeve forms a U-shape.
  • the pressure piece can be moved lengthwise between the legs and can therefore be moved closer to the base or removed from the base, to reduce or enlarge a clamping space created between the pressure piece and the base.
  • the pressure piece has, for example, at least one guide element which is guided in a guide opening of at least one of the legs.
  • the pressure piece has a guide element, for example in the form of a projection element, on lateral edges facing away from one another, which are each assigned to one of the legs.
  • Each guide element is received in an assigned guide opening of the assigned leg of the connecting sleeve and can be linearly displaced in the respective assigned guide opening, so that the pressure piece is guided between the legs of the connecting sleeve.
  • the connecting sleeve can be formed, for example, as a sheet metal part, in particular as a stamped and bent part.
  • the pressure piece can also be formed as a sheet metal part, for example as a stamped and bent part.
  • the lever element is pivotably mounted between the legs of the connecting sleeve.
  • the lever element can, for example, have two bearing elements which protrude from a body of the lever element along the pivot axis perpendicular to the adjustment direction and engage in bearing openings on the legs of the connecting sleeve. The lever element can thus be pivoted between the legs of the connecting sleeve in order to move the pressure piece between the clamping position and the opening position.
  • the spring element biases the pressure piece in the direction of the clamping position.
  • the spring element When the pressure piece is transferred from the clamping position to the opening position, the spring element is thus tensioned, so that the opening movement takes place against the spring force of the spring element.
  • the return of the pressure piece from the open position to the clamping position is supported by the spring force of the spring element.
  • the spring element In the clamping position, the spring element biases the pressure piece in the direction of the base, so that a clamping force determined by the spring element is exerted on conductors and/or busbars that are connected to the connection terminal.
  • the spring element has a support leg supported on the connecting sleeve and an elastically connected to the pressure piece Support leg deflectable active leg.
  • the spring element is supported on the connecting sleeve via the support leg and is thus fixed to the connecting sleeve.
  • the active leg can be deflected elastically relative to the support leg, with a connection to the pressure piece being established via the active leg.
  • the active leg is deflected, whereby when the pressure piece is transferred from the clamping position to the open position, the active leg is stretched elastically relative to the support leg and thus the adjustment into the open position takes place against the spring force of the spring element.
  • the spring element can be formed from a spring steel, for example from a spring band.
  • the spring element can basically have any shape, for example a U-shape or an S-shape.
  • the spring element can also be formed by a spiral spring or have another spring shape.
  • the spring element can be supported directly on the connecting sleeve or indirectly, for example via an axle on the connecting sleeve.
  • the spring element can also be firmly connected to the connecting sleeve, for example screwed or welded.
  • the pressure piece has a pressure section at an end facing the base, which extends obliquely to the adjustment direction.
  • the pressure section is designed to act on one or more conductors and/or on one or more busbars that are connected to the connection terminal.
  • the pressure section can have a contacting contour on an end face facing the base, which widens in the direction of the base of the connecting sleeve and thus forms a funnel shape in a projection plane perpendicular to the plug-in direction.
  • the pressure section can also be bevelled, so that an edge with an acute angle (less than 90°) results on the front side of the pressure section of the pressure piece, which is designed, for example, as a stamped and bent part.
  • the pressure section can dig into the material of the conductor or the busbar via such a beveled, sharp edge and thus produce an advantageous mechanical fixation on the connection terminal.
  • the pressure section is preferably formed on a surface section of the pressure piece, which extends along a plane which is spanned by the adjustment direction and a transverse direction directed transversely to the adjustment direction.
  • the printing section is angled to the surface section.
  • the surface section extends between the legs of the connecting sleeve and is guided between the legs, so that the pressure piece can be moved along the adjustment direction along the length between the legs.
  • the surface section extends flatly along the plane spanned by the adjustment direction and the transverse direction directed transversely to the adjustment direction.
  • One or more openings can be formed in the surface section, into which, for example, the lever element and/or the spring element engage, in order to thereby establish an operative connection between the pressure piece and the lever element on the one hand and between the pressure piece and the spring element on the other hand.
  • the surface section is not necessarily closed over the entire area.
  • the surface section can also be formed by a circumferential frame extending along a flat plane.
  • the pressure section extends obliquely to a plug-in direction along which conductors and/or busbars can be plugged into the connection terminal.
  • the pressure section is thus aligned obliquely to the insertion direction and also obliquely to the adjustment direction (perpendicular to the insertion direction).
  • the printing section preferably points in the insertion direction with a directional vector component.
  • the pressure section thus stands at an angle to the adjustment direction and at an angle to the insertion direction from the surface section of the pressure piece and points in the insertion direction with a directional vector component (i.e. in the case of vector component decomposition in a plane spanned by the adjustment direction and the insertion direction).
  • the pressure piece is locked with the connecting sleeve in the open position. If the pressure piece is slidably guided between the legs of the connecting sleeve, for example, the pressure piece can have locking edges in the open position Guide openings of the legs are engaged, so that a locking connection is created between the pressure piece and the connecting sleeve.
  • the pressure piece can, for example, be tiltable relative to the connecting sleeve.
  • the pressure piece can be disengaged, for example from associated locking edges on the legs of the connecting sleeve, in order to thereby cancel the locking between the pressure piece and the connecting sleeve.
  • the tilting of the pressure piece to release the latching can be done, for example, via the lever element, which for this purpose acts, for example, with a head section on the pressure piece and thereby tilts the pressure piece relative to the connecting sleeve in such a way that the latching is released.
  • connection terminal has a cover element connected to the pressure piece and made of an electrically insulating material, which can be adjusted together with the pressure piece relative to the connection sleeve.
  • the pressure piece and the connecting sleeve are preferably each formed from an electrically conductive metal material, in particular as a metal sheet metal part, preferably as a stamped and bent part.
  • the cover element is arranged on the pressure piece, which provides an electrically insulating cover to the outside.
  • the cover element When adjusting the pressure piece, the cover element is moved together with the pressure piece, which has the advantage that the cover element is closer to a connected conductor or a busbar in the clamping position of the pressure piece and thus the best possible cover for protection against contact with a connected conductor or busbar is provided.
  • a cover element can also be arranged on a housing of an associated electrical device.
  • connection terminal is preferably part of an electrical device.
  • an electrical device which can be arranged, for example, on a mounting rail and combined with other electrical devices on the mounting rail, preferably has a housing on which the connection terminal is arranged.
  • the connecting sleeve of the connecting terminal can be adjusted relative to the housing along the adjustment direction.
  • the connecting sleeve is therefore not fixed in place on the housing, but can be moved along the adjustment direction on the housing. This can be particularly advantageous if a current bar is arranged in a stationary manner on the electrical device and is connected to electrical assemblies of the electrical device.
  • connection sleeve Due to the adjustability of the connection sleeve, the base of the connection sleeve can be adjusted to the current bar in order to enable a conductor or a busbar to be connected to a connection terminal between the current bar and the base of the connection sleeve.
  • the connecting terminal is designed for an actuation process in which, when the lever element is actuated to adjust the pressure piece from the clamping position to the open position, the pressure piece on the connecting sleeve is initially adjusted in the adjustment direction in a first movement phase.
  • the first movement phase the pressure piece is removed from the base of the connecting sleeve by adjusting the pressure piece on the connecting sleeve.
  • This first movement phase ends as soon as the pressure piece hits an assigned stop on the side of the housing and thus further movement of the pressure piece (with a fixed connecting sleeve) is prevented by the stop on the housing of the electrical device.
  • the pressure piece has thus reached a stop position on the housing defined by the stop.
  • the connecting sleeve in one embodiment, is not fixed to the housing, the connecting sleeve can also first move relative to the housing (with the pressure piece fixed to the housing) or simultaneously with the pressure piece relative to the housing. The result is a relative movement between the pressure piece, connecting sleeve and current bar.
  • connection terminal of the type described can be used in particular on an electrical device that is to be mounted in a control cabinet and can preferably be combined with other electrical devices on a mounting rail.
  • a connection terminal can be used in particular on a FI circuit breaker or a circuit breaker.
  • connection terminal in particular enables a simple, quick, reliable connection of a line or a busbar, with sufficient clamping force being able to be provided via the pressure piece to firmly hold the conductor or the busbar on the connection terminal.
  • Fig. 1 is a view of an electrical device on a mounting rail
  • Fig. 2 is a view of the electrical device, with a connected line and a connected busbar;
  • connection terminal 3 shows an exploded view of an exemplary embodiment of a connection terminal for connecting conductors or busbars
  • Fig. 4 is a front view of the connection terminal
  • Fig. 5 is a view of the connection terminal in the assembled position
  • connection terminal 6A shows a sectional view through the connection terminal, in a clamping position of a pressure piece of the connection terminal
  • 6B shows a sectional view through the connection terminal, in an open position of the pressure piece
  • Fig. 7A is a side view of the arrangement according to Fig. 6A
  • Fig. 7B is a side view of the arrangement according to Fig. 6B;
  • Fig. 8 shows the view according to Fig. 6A, with busbars connected;
  • Fig. 9 shows the view according to Fig. 6A, with conductors connected
  • FIG. 10 shows the view according to FIG. 6A, with a connected conductor and a connected busbar;
  • 11A shows a view of an electrical device with a tool for transferring the pressure piece into the open position
  • Fig. 11B is a front view of the arrangement according to Fig. 11A;
  • FIG. 11C shows a sectional view along the line AA according to FIG. 11B;
  • 12A is a view of the electrical device after actuation of the connection terminal to move the pressure piece into the open position
  • FIG. 12B is a front view of the arrangement according to FIG. 12A;
  • Fig. 12C is a sectional view along line BB according to Fig. 12B;
  • 13A is a view of the electrical device after actuation of the connection terminal to return the pressure piece to the clamping position
  • FIG. 13B is a front view of the arrangement according to FIG. 13A;
  • Fig. 13C is a sectional view along line CC according to Fig. 13B;
  • 14A is a view of an electrical device with a connection terminal with a current bar
  • 14B is an enlarged view of the current bar on the terminal;
  • 15 is an exploded view of a further exemplary embodiment of a connection terminal;
  • Fig. 16 is a front view of the connection terminal
  • Fig. 17 is a side view of the connection terminal
  • Fig. 18 is a perspective view of the connection terminal
  • connection terminal 19A shows a sectional view through the connection terminal, in a clamping position of a pressure piece guided on a connection sleeve
  • 19B shows the sectional view according to FIG. 19A, after actuation of a lever element for adjusting the pressure piece relative to the connecting sleeve;
  • 19C shows the sectional view according to FIG. 19B, after connecting two busbars and after releasing the pressure piece from the clamping position;
  • Fig. 20 shows the view according to Fig. 19C, but with two lines connected;
  • Fig. 21 shows the view according to Fig. 19C, but with a connected line and a connected busbar;
  • Fig. 22A is a view of the connection terminal together with a current bar
  • connection terminal 22B shows the view of the connection terminal according to FIG. 22A, after actuation of the lever element for adjusting the pressure piece relative to the connection sleeve in an open position;
  • FIG. 22C shows the view according to FIG. 22B, after releasing the pressure piece from the open position
  • Fig. 23A is a view of an electrical device
  • Fig. 23B is a sectional view along line II according to Fig. 23A; 23C is an enlarged view in detail A according to FIG. 23B, showing an exemplary embodiment of a connection terminal;
  • Fig. 24A is a view of an electrical device
  • Fig. 24B is a sectional view along the line F-F according to Fig. 24A;
  • Fig. 24C is an enlarged view in detail A according to Fig. 24B, showing the connection terminal according to Fig. 23B after adjusting a pressure piece into an open position.
  • the electrical device 1 shows an exemplary embodiment of an electrical device 1, which, for example, implements a circuit breaker, for example a FI circuit breaker.
  • the electrical device 1 has a housing 10 on which a fastening device 11 for locking the device 1 with a mounting rail 2 is formed.
  • the device 1 can be combined with other electrical devices on the mounting rail 2 by lining up the electrical devices along a rowing direction on the mounting rail 2. In this way, an electrical functional assembly can be created in a control cabinet, for example, via the mounting rail 2.
  • the electrical device 1 has a plurality of connection terminals 3, to which one or more electrical conductors 4 and/or one or more busbars 5 can be connected.
  • the conductors 4 and/or the busbars 5 can be attached to the connection terminal 3 along a plug-in direction E in order to connect the conductors 4 and/or the busbars 5 to the electrical device 1.
  • connection terminals 3 implement double-chamber connection terminals in which conductors 4 or busbars 5 can be connected to the connection terminals 3 along two different conductor connection axes L1, L2.
  • Fig. 2 shows the electrical device 1 according to Fig. 1 with a line 4 connected to a connection terminal 3 and a busbar 5 connected to the same connection terminal 3.
  • connection terminal 3 to 5 show an exemplary embodiment of a connection terminal 3, as can be provided on the electrical device 1 according to FIGS. 1 and 2.
  • connection terminal 3 has a connection sleeve 30, a pressure piece 31, a spring element 32 and a lever element 33 which is pivotally mounted on the connection sleeve 30 about a pivot axis D.
  • a cover element 34 is arranged on the pressure piece 31 and is made of an electrically insulating material and thus provides protection against contact.
  • the connecting sleeve 30 has a base 300 that connects legs 301 to one another.
  • the legs 301 protrude from the base 300 along an adjustment direction V and, together with the base 300, form a U-shape.
  • the pressure piece 31 is guided so as to be displaceable longitudinally along the adjustment direction V.
  • the pressure piece 31 has a surface section 310 which extends flatly along a plane spanned by the adjustment direction V and a transverse direction.
  • guide elements 312, 313 are formed laterally in the form of transversely projecting pins, which are guided in associated guide openings 302, 303 of the legs 301 of the connecting sleeve 30, which are formed by elongated link openings.
  • the pressure piece 31 forms a pressure section 311 that is angled relative to the surface section 310, which is inclined to the adjustment direction V and is formed on an end of the pressure piece 31 facing the base 300 of the connecting sleeve 30.
  • the pressure section 311 is designed to cause connected conductors and/or busbars to jam on the connecting sleeve 30 in a clamping position, as will be described below.
  • the pressure piece 31 is spring-loaded relative to the connecting sleeve 30 via the spring element 32.
  • the spring element 32 has a support leg 322, which engages via engagement pins 325 in support openings 306 on the legs 301 of the connecting sleeve 30 and is supported on the legs 301.
  • support elements 324 are formed in the form of transversely projecting pins, which engage in recesses 305 on the legs 301 of the connecting sleeve 30 and thereby create additional support for the spring element 32 on the legs 301.
  • a clamping leg 320 can be elastically deflected in relation to the support leg 322 and the connecting section 323, which engages via an end 321 in an opening 316 at the transition between the surface section 310 and the pressure section 311 of the pressure piece 31 and thus establishes a connection between the clamping leg 320 and the pressure piece 31 manufactures.
  • the pressure piece 31 is displaceable on the connection sleeve 30 between a clamping position in which the pressure section 311 is closer to the base 300 of the connecting sleeve 30 and an open position in which the pressure section 311 is away from the base 300.
  • the pressure piece 31 is spring-loaded in the direction of the clamping position via the spring element 32. Moving the pressure piece 31 in the adjustment direction V and thus in the direction of the open position takes place against the spring preload of the spring element 32.
  • the lever element 33 is pivotally mounted about the pivot axis D.
  • the lever element 33 has a body 330, from which bearing elements 331 protrude axially on both sides along the pivot axis D in the form of circular pins, which engage in associated bearing openings 304 on the legs 301 of the connecting sleeve 30 and thus pivot the lever element 33 about the pivot axis D store the legs 301.
  • the lever element 33 has an active section 333 which engages in an associated engagement opening 314 on the surface section 310 of the pressure piece 31 and thus establishes a connection between the lever element 33 and the pressure piece 31.
  • a tool grip 332 is also formed on the body 330 of the lever element 33, into which a tool, in particular a screwdriver, can be inserted in order to adjust the lever element 33.
  • the cover element 34 has a surface section 340 which extends parallel to the surface section 310 of the pressure piece 31. Fastening elements 341, 342 protrude from the surface section 340 in the direction of the pressure piece 31, with the fastening elements 341 engaging in an opening 315 on the surface section 310 of the pressure piece 31 and the fastening elements 342 engaging around an upper end face of the surface section 310, so that the cover element 34 is fixed above it is connected to the pressure piece 31 and the cover element 34 is moved together with the pressure piece 31 when the pressure piece 31 is moved.
  • the pressure piece 31 and the connecting sleeve 30 are manufactured, for example, as sheet metal parts, preferably as stamped and bent parts, and consist of an electrically conductive metal material.
  • the cover element 34 in contrast, consists of an electrically insulating material, for example a plastic material. Contact protection on the pressure piece 31 is provided via the cover element 34.
  • connection terminal 3 is arranged on the housing 10 of the associated electrical device 1, as can be seen in conjunction with FIGS. 1 and 2.
  • the electrical device 1 here has a current bar 12, which establishes an electrical connection between the respective connection terminal 3 and electrical and/or electronic assemblies of the electrical device 1.
  • the current bar 12 projects into the connecting sleeve 30 of the connecting terminal 3 and thereby occupies an intermediate position between the base 300 of the connecting sleeve 30 and the pressure piece 31.
  • the pressure piece 31 can be adjusted between a clamping position (FIGS. 6A, 7A) and an opening position (FIGS. 6B, 7B) on the connecting sleeve 30.
  • the clamping position the pressure piece 31 with the pressure section 311 is brought closer to the base 300, so that inserted electrical conductors 4 and/or busbars 5 are clamped between the pressure piece 31, the current bar 12 and the base 300 and are thereby electrically connected to the power bar 12, as This is illustrated in Fig. 8 (for two connected busbars 5), Fig. 9 (for two connected electrical conductors 4) and Fig. 10 (for one connected electrical conductor 4 and a busbar 5).
  • connection terminal 3 here realizes a double-chamber connection terminal, in which a conductor 4 or a busbar 5 is inserted into one between the current bar 12 and The first chamber formed by the pressure piece 31 and another conductor 4 or another bus bar 5 can be inserted into a second chamber formed between the current bar 12 and the base 300 and thus connected to the connection terminal 3.
  • a clamping force on the conductors 4 or the busbars 5 is brought about uniformly via the pressure piece 31 and the spring preload of the spring element 32, with the same clamping forces resulting in the two chambers.
  • the pressure piece 31 In the clamping position (FIGS. 6A, 7A), the pressure piece 31 is adjusted in the direction of the base 300 of the connecting sleeve 30 and is spring-loaded via the spring element 32. If the pressure piece 31 is to be moved from the clamping position into the open position (FIGS. 6B, 7B), a user can attack the lever element 33 using a tool 6 and pivot the lever element 33 in a pivoting direction S about the pivot axis D on the connecting sleeve 30 . The lever element 33 thereby acts on the pressure piece 31 via its active section 333 and adjusts the pressure piece 31 in the adjustment direction V on the connecting sleeve 30, as can be seen in the transition from FIGS. 6A, 7A to FIGS. 6B, 7B.
  • the pressure section 311 of the pressure piece 31 is removed from the base 300, so that there is a space between the pressure piece 31 and the current bar 12 on the one hand and between the current bar 12 and the base 300 on the other hand.
  • conductors 4 and/or busbars 5 can be plugged into the connection terminal 3 in a simple, essentially powerless manner, or connected conductors 4 or busbars 5 can be removed from the connection terminal 3.
  • the opening movement of the connecting terminal 3 results in a movement sequence that is divided into different movement phases.
  • the pressure piece 31 is essentially moved on the connecting sleeve 30, with the connecting sleeve 30 remaining stationary on the housing 10.
  • the connecting sleeve 30 is, as can be seen from FIGS. 6A and 7A, moved closer to the current bar 12 and into the assumed position, for example via a Biasing element 307 is biased relative to a housing section 101 of the housing 10.
  • connection sleeve 30 In the second movement phase, a space between the current bar 12 and the base 300 of the connection sleeve 30 is thus (also) released, so that both connection chambers are opened and conductors 4 and / or busbars 5 along different conductor connection axes L1, L2 into the connection chambers along a plug-in direction E can be plugged in.
  • the movement sequence described above is not mandatory. Because the connecting sleeve 30 is not attached to the housing 10 and is therefore linearly adjustable along the adjustment direction V to the housing 10, first the connecting sleeve 30 and then the pressure piece 31 can move to the housing 10. Or the pressure piece 31 and the connecting sleeve 30 can move to the housing 10 at the same time.
  • the pressure piece 31 can be moved back into the clamping position.
  • a user can use the tool 6 to pivot the lever element 33 back against the pivoting direction S or simply release the lever element 33 so that the pressure piece 31 returns to the clamping position due to the spring preload of the spring element 32. Plugged-in conductors 4 or busbars 5 are thus clamped between the pressure piece 31 and the current bar 12 on the one hand and between the current bar 12 and the base 300 on the other hand and thus connected to the connecting sleeve 30.
  • the pressure section 311 is aligned obliquely to the adjustment direction V and also obliquely to the insertion direction E and is angled towards the surface section 310 of the pressure piece 31.
  • the orientation of the printing section 311 is such that the printing section 311 points with a directional vector component in the insertion direction E and thus with a Directional vector component protrudes in the insertion direction E from the surface section 310 of the pressure piece 31.
  • the result of this is that the pressure section 311 creates a barb, which strengthens the hold of a connected conductor 4 or a busbar 5 when loaded against the insertion direction E.
  • the pressure section 311 can be beveled on an end face facing the current bar 12, so that an edge on the pressure section 311 results that has an acute angle ( ⁇ 90°).
  • ⁇ 90° an acute angle
  • the hold of the connection with a connected conductor 4 or a busbar 5 can be further improved by allowing the pressure section 311 to dig into the material of the conductor 4 or the busbar 5.
  • 11A-11C, 12A-12C and 13A-13C show an exemplary embodiment of an electrical device 1 before transferring the connecting terminal 3 from the clamping position to the open position (Fig. 11A-11C), after transferring it from the clamping position to the open position (Fig. 12A-12C) and after returning to the clamping position (Fig. 13A-13C).
  • a user grabs the lever element 33 with a tool 6, in particular a screwdriver, and pivots it so that the pressure piece 31 is moved into the open position and then returned to the clamping position under the spring preload of the spring element 32 in order to be connected Conductor 4 or busbars 5 to be clamped to the connecting terminal 3 (in the example according to FIGS. 13A-13C, two busbars 5 are connected to the connecting sleeve 3).
  • the pressure piece 31 acts on a connected conductor 4 or a busbar 5 via the pressure section 311.
  • a contacting contour 317 can be formed on the pressure section 311, which widens in the direction of the current bar 12 and forms a funnel shape in a projection plane perpendicular to the plugging direction E.
  • contacting contours 120, 121 can also be formed on the current bar 12 on the side facing the pressure piece 31 and/or on the side facing the base 300 of the connecting sleeve 30, each of which widens outwards.
  • An improved system with a connected conductor 4 or a busbar 5 can be obtained via the contacting contours 120, 121, 317, with increased contact force through punctual or linear contact.
  • a connection can also be made at an enlarged size Distance between the pressure piece 31 and the base 300 of the connecting sleeve 30 can be achieved, so that an increased tension on the spring element 32 and thus a greater spring preload is set.
  • connection terminal 3 shown in FIGS. 15 to 22A-22C, for use on an electrical device 1 (analogous to that described above and shown, for example, in FIG. 1), the connection terminal 3 has a connection sleeve 30 with a base 300 and two legs 301 extending from the base 300, in each of which a guide opening 302 is formed.
  • a spring element 32 is supported on the legs 301, which engages via engagement elements 325 on a support leg 322 in slot openings 306 on the legs 301 of the connecting sleeve 30 and is thus supported relative to the connecting sleeve 30 via the support leg 322, as can be seen from Fig. 15 and Figs. 16 to 18 results.
  • the spring element 32 has an active leg 320, which is connected to the support leg 322 via a curved connecting section 323 and can be elastically deflected towards the support leg 322.
  • the spring element 32 is operatively connected to a pressure piece 31, which is guided in a linearly displaceable manner between the legs 301 of the connecting sleeve 30 along an adjustment direction V.
  • the pressure piece 31, which is designed in the manner of a frame, engages via guide elements 312 on the side edges of the pressure piece 31 in the guide openings 302 on the legs 301 of the connecting sleeve 30 and is thereby movable in a linearly guided manner along the adjustment direction V between the legs 301 .
  • the lever element 33 is in operative connection with the pressure piece 31 via an active section 333 in such a way that the pressure piece 31 can be adjusted between the legs 301 of the connecting sleeve 30 by pivoting the lever element 33.
  • the pressure piece 31 forms an engagement opening 314 formed within the frame-shaped pressure piece 31, into which both the Active section 333 of the lever element 33 as well as the active leg 320 of the spring element 32 engage with one end 321 to establish an active connection. Due to the engagement of the active section 333 of the lever element 33, the pressure piece
  • connection terminal 3 is essentially the same as the connection terminal 3 described above, so reference should also be made to the previous statements.
  • the pressure piece 31, caused by the biasing force of the spring element 32, is brought closer to a current bar 12 engaging in the connecting sleeve 30 with a pressure section 311 formed on a cross strut 318, as can be seen from FIG. 19A.
  • the current bar 12 occupies an intermediate position between the pressure section 311 and the base 300 of the connecting sleeve 30, so that the current bar 12 is arranged between the pressure section 311 on the one hand and the base 300 on the other hand.
  • the pressure piece 31 on the connecting sleeve 30 can be adjusted.
  • a user can use a tool, for example a screwdriver, to engage a tool grip 332 on the lever element 33 and thereby act on the lever element 33 in order to pivot it on the connecting sleeve 30 and thereby move the pressure piece 31 into the open position according to FIG. 19B to transfer.
  • the pressure piece 31 with the pressure section 311 formed on the cross strut 318 is removed from the power bar 12, so that a space between the power bar 12 and the pressure section 311 on the one hand and also between the power bar 12 and the base 300 on the other hand is released.
  • connection terminal 3 In the open position of the pressure piece 31, for example, two busbars 5, as shown in FIG. 19C, can be connected to the connection terminal 3, with a busbar 5 inserted between the current bar 12 and the pressure section 311 and another busbar 5 between the current bar 12 and the base 300 become can, so that both busbars 5 can be connected together to the connection terminal 3, analogous to what was described above.
  • the busbars 5 After the pressure piece 31 has been released from the open position, the busbars 5 are clamped to the connection terminal 3 and clamped in an electrically contacting manner with the current bar 12 via the elastically exciting effect of the spring element 32 acting on the pressure piece 31.
  • two lines 4, as shown in Fig. 20, or one line 4 and one bus bar 5, as shown in Fig. 21, can also be connected to the connection terminal 3 .
  • the same clamping force is provided on the lines 4 and the busbars 5 via the connecting terminal 3.
  • connecting lines 4 with different line cross-sections, as shown in FIG. 20, can be made possible in a simple, reliable manner.
  • the pressure piece 31 is locked with the connecting sleeve 30 in the open position (FIG. 19B), as can be seen from FIG. 22A. If the pressure piece 31 is moved from the clamping position shown in FIG. 22A in the adjustment direction V into the open position according to FIG Limiting sections that limit the guide opening 312 on the legs 301, as can be seen from FIG. 22A in the transition to FIG. 22B. In the open position according to FIG. 22B, the pressure piece 31 is thus locked with the connecting sleeve 30 and is held in position relative to the connecting sleeve 30.
  • the pressure piece 31 is moved into the open position by moving the lever element 33 in the adjustment direction V relative to the connecting sleeve 30 via the active section 333 engaging in the engagement opening 314 and thus moving along the guide openings 302. Due to the force exerted on the pressure piece 31 via the lever element 33, the pressure piece 31 is automatically moved into engagement with the locking edges 308 on the legs 301 of the connecting sleeve 30 and thus automatically locks in the open position.
  • the lever element 33 In order to release the pressure piece 31 from the open position, the lever element 33 can be moved in the opposite pivoting direction S', as shown in FIG. 22C is shown. As a result, the lever element 33 with a head section 334 acts on an upper cross strut 319 of the pressure piece 31 and thereby tilts the pressure piece 31 about tipping points 309 formed on the boundary sections of the guide openings 302, as can be seen in the transition from FIG. 22B to FIG. 22C . The pressure piece 31 is thus disengaged from the locking edges 308 and is moved into the clamping position due to the spring preload of the spring element 32.
  • the connecting sleeve 30 is additionally spring-loaded relative to the current bar 12 via a biasing element 307.
  • the biasing element 307 is tensioned and thus causes a biasing force between the current bar 12 and the base 300 of the connecting sleeve 30 in the direction of the base 300 approaching the current bar 12.
  • FIGS. 23A-23C and 24A-24C is identical to the exemplary embodiment described above with reference to FIGS. 15 to 22A-22C, so reference should be made to the explanations in this regard.
  • a contact section 335 is formed on the lever element 33, which is in the non-actuated position of the lever element 33 assigned to the clamping position (corresponding to the position according to FIGS. 19A and 23C) is in contact with an associated housing section 102 of the housing 10 of the associated electrical device 1, as can be seen from FIG. 23C.
  • the lever element 33 which is pivotally mounted on the connecting sleeve 30, thus assumes a defined position relative to the housing 10 in the non-actuated position according to FIGS. 19A and 23C and thereby supports the connecting sleeve 30 relative to the housing 10.
  • lever element 33 is pivoted, as can be seen in the transition from FIG. 23C to FIG Edge of contact section 335 in contact with pressure piece 31. It is also possible to dispense with a contact of the lever element 33 via surfaces 335, 336 on the housing 10 or the pressure piece 31.
  • the lever element in the actuated position according to FIG. 24C, is supported on the housing 10 via a support point 337 and is thereby held in position relative to the housing 10 in the actuated position. Due to the support on the housing 10, the connecting sleeve 30 is pressed down with the base 30 in the open position of the pressure piece 31 and is thus removed from the current bar 12, so that it is ensured that in the open position of the pressure piece 31 space is released on both sides of the current bar 12, as shown in Fig. 24C, and thus lines 4 or busbars 5 can be plugged in on both sides of the power bar 12.
  • connection terminal of the type described can advantageously be used on an electrical device that can be arranged on a mounting rail.
  • the connection terminal is not limited to use on a circuit breaker, in particular an FI circuit breaker or a circuit breaker.
  • connection terminal can preferably be a double-chamber connection terminal. However, this is not mandatory.
  • the connection terminal can also form only a single chamber for connecting a conductor or a busbar.

Landscapes

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

Abstract

La présente invention concerne une borne de raccordement (3) pour un dispositif électrique (1) qui comprend un manchon de raccordement (30) qui présente une base (300) et peut être fixé à l'au moins un conducteur électrique (4) et/ou au moins une barre omnibus (5) à des fins de connexion électrique à la borne de connexion (3). Une pièce de pression (31) guidée de manière déplaçable le long d'une direction de réglage (V) sur le manchon de raccordement (30) peut être réglée entre une position de serrage et une position ouverte sur le manchon de raccordement (30). La pièce de pression (31) est précontrainte élastiquement par rapport au manchon de raccordement (30) au moyen d'un élément ressort (32). Un élément de levier (33) est relié de manière fonctionnelle à la pièce de pression (31) et peut être actionné dans le but de régler la pièce de pression (31) entre la position de serrage et la position ouverte. La pièce de pression (31) est proche de la base (300) du manchon de raccordement (30) dans le but de serrer au moins un conducteur (4) ou au moins une barre omnibus (5) sur la borne de raccordement (3) dans la position de serrage et est à une certaine distance de la base (300) dans la position ouverte.
PCT/EP2023/055652 2022-03-09 2023-03-07 Borne de connexion pour dispositif électrique WO2023170015A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
LU501638A LU501638B1 (de) 2022-03-09 2022-03-09 Anschlussklemme für ein elektrisches Gerät
LULU501638 2022-03-09
DE102022132354.4A DE102022132354A1 (de) 2022-12-06 2022-12-06 Anschlussklemme für ein elektrisches Gerät
DE102022132354.4 2022-12-06

Publications (1)

Publication Number Publication Date
WO2023170015A1 true WO2023170015A1 (fr) 2023-09-14

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WO (1) WO2023170015A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2738676A1 (fr) * 1995-09-11 1997-03-14 Legrand Sa Appareil electrique a bornes de raccordement protegees par un diaphragme
EP1322000B1 (fr) 2001-12-21 2004-09-22 Weidmüller Interface GmbH & Co. Borne de connexion pour barre omnibus
DE102013107292B4 (de) 2013-07-10 2016-09-15 Wago Verwaltungsgesellschaft Mbh Steckverbinder
DE102016112831A1 (de) 2016-07-13 2018-01-18 Phoenix Contact Gmbh & Co. Kg Anschlussklemme
US20190190168A1 (en) * 2016-08-23 2019-06-20 Wago Verwaltungsgesellschaft Mbh Spring-loaded clamping connection
DE102019116930A1 (de) * 2019-06-24 2020-12-24 WAGO Verwaltungsgesellschaft mit beschränkter Haftung Elektrische Anschlussklemme
DE102018129875B4 (de) 2018-11-27 2021-02-11 Phoenix Contact Gmbh & Co. Kg Klemmeneinrichtung zum Anordnen an einer Tragschiene

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2738676A1 (fr) * 1995-09-11 1997-03-14 Legrand Sa Appareil electrique a bornes de raccordement protegees par un diaphragme
EP1322000B1 (fr) 2001-12-21 2004-09-22 Weidmüller Interface GmbH & Co. Borne de connexion pour barre omnibus
DE102013107292B4 (de) 2013-07-10 2016-09-15 Wago Verwaltungsgesellschaft Mbh Steckverbinder
DE102016112831A1 (de) 2016-07-13 2018-01-18 Phoenix Contact Gmbh & Co. Kg Anschlussklemme
US20190190168A1 (en) * 2016-08-23 2019-06-20 Wago Verwaltungsgesellschaft Mbh Spring-loaded clamping connection
DE102018129875B4 (de) 2018-11-27 2021-02-11 Phoenix Contact Gmbh & Co. Kg Klemmeneinrichtung zum Anordnen an einer Tragschiene
DE102019116930A1 (de) * 2019-06-24 2020-12-24 WAGO Verwaltungsgesellschaft mit beschränkter Haftung Elektrische Anschlussklemme

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