EP2956994B1 - Spring-loaded connection terminal and conductor connection terminal - Google Patents

Spring-loaded connection terminal and conductor connection terminal Download PDF

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Publication number
EP2956994B1
EP2956994B1 EP14704144.6A EP14704144A EP2956994B1 EP 2956994 B1 EP2956994 B1 EP 2956994B1 EP 14704144 A EP14704144 A EP 14704144A EP 2956994 B1 EP2956994 B1 EP 2956994B1
Authority
EP
European Patent Office
Prior art keywords
spring
clamping
busbar
terminal connection
free end
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
EP14704144.6A
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German (de)
French (fr)
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EP2956994A1 (en
Inventor
Henry Stolze
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.)
Wago Verwaltungs GmbH
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Wago Verwaltungs GmbH
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Publication date
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Application filed by Wago Verwaltungs GmbH filed Critical Wago Verwaltungs GmbH
Priority to EP18205463.5A priority Critical patent/EP3460919B1/en
Priority to PL14704144T priority patent/PL2956994T3/en
Priority to EP21155507.3A priority patent/EP3836306A1/en
Publication of EP2956994A1 publication Critical patent/EP2956994A1/en
Application granted granted Critical
Publication of EP2956994B1 publication Critical patent/EP2956994B1/en
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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28Clamped connections, spring connections
    • H01R4/48Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/03Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations
    • H01R11/09Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations the connecting locations being identical
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28Clamped connections, spring connections
    • H01R4/48Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/48185Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
    • H01R4/4819Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end the spring shape allowing insertion of the conductor end when the spring is unbiased
    • H01R4/4821Single-blade spring
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28Clamped connections, spring connections
    • H01R4/48Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4846Busbar details
    • H01R4/485Single busbar common to multiple springs
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50Fixed connections
    • H01R12/51Fixed connections for rigid printed circuits or like structures
    • H01R12/515Terminal blocks providing connections to wires or cables
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28Clamped connections, spring connections
    • H01R4/48Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4828Spring-activating arrangements mounted on or integrally formed with the spring housing
    • H01R4/483Pivoting arrangements, e.g. lever pushing on the spring

Definitions

  • the invention relates to a spring-loaded clamping connection with at least one loop-shaped bent clamping spring and a busbar, the clamping spring having a contact leg adjacent to the busbar, a spring arch adjoining the contact leg and a clamping leg adjoining the spring arch and with a free clamping end pointing in the direction of the busbar .
  • the invention further relates to a conductor connection terminal with an insulating material housing.
  • Such spring-loaded terminal connections are used to connect electrical conductors, e.g. in terminal blocks, box terminals, circuit board connectors, device connectors or the like.
  • DE 10 2004 045 026 B3 discloses an electrical connection or connecting terminal with a loop-shaped clamping spring which has a U-shaped bent contact leg, an adjoining spring bow and a clamping leg adjoining the spring bow.
  • the contact leg has a recess through which a busbar piece is passed in order to rest on a holder section punched out of the recess and on a transverse edge delimiting the recess.
  • the free clamping end of the clamping leg points in the direction of the busbar and, together with the busbar, forms a clamping point for an electrical conductor to be connected.
  • WO 2012/000639 A1 shows a connection terminal with a loop-shaped clamping spring, which has laterally protruding actuating tabs on the free clamping end of the clamping leg.
  • a linearly displaceable actuating lever cooperates with the actuating tabs to a through to open the clamping leg and the clamping point formed by a busbar and / or to remove an electrical conductor.
  • the clamping spring has two free pivot points about which the clamping leg is freely rotatably mounted during the opening and closing movements.
  • the object of the present invention is to create an improved spring-loaded terminal contact and an improved conductor connection terminal which enables installation in the insulating material housing to relieve the pressure on the insulating material housing.
  • the at least one indentation creates a short web, which is narrower compared to the adjoining section of the contact leg.
  • a web forms a flexible joint or hinge.
  • One on the clamp leg and the spring bow on the clamp spring Acting force is intercepted via the flexible joint, ie the web, in such a way that the clamping spring is deformed so optimally without exerting excessive forces on an adjoining insulating material housing that the force is diverted to the adjoining contact leg and the busbar attached to it.
  • the force connection of the clamping spring is thus reduced to an insulating material housing.
  • cutouts for relieving the force of the insulating material housing are thus provided.
  • Indentation in the sense of the present invention is understood to mean a relatively short recess at the edge area of the contact leg, which in the area of the indentation leads to a web with a reduced width compared to the adjoining sections of the contact arm, the web in relation to the rest Sections of the contact leg has a shorter length.
  • the at least one indentation is preferably arranged in a space above the busbar. This creates a hinge opposite the terminal point for connecting an electrical conductor between the section of the contact leg connected to the busbar and the section of the contact leg connected to the clamping leg via the spring arch, which relieves the force of the insulating material housing surrounding the spring-loaded terminal connection.
  • the at least one indentation is preferably located in a space above the free clamping end of the clamping leg in the rest state of the clamping spring in that the clamping leg rests on the busbar.
  • the hinge of the clamping spring created by the indentations with the web of reduced width thus acts in an optimal position in relation to the free clamping end of the clamping leg and an insulating material housing surrounding the clamping spring.
  • the busbar is mounted on the contact leg so as to be tiltable.
  • This provides a flexible run-up slope of the busbar that adapts to the conductor and can advantageously be reduced by the force acting on the insulating material housing when an electrical conductor is inserted and clamped to the spring-loaded terminal connection.
  • the tiltable mounting of the busbar on the contact leg is in principle independent of the above-described special embodiment of the spring-loaded terminal connection with an indentation and can also achieve its advantageous effect with clamping springs without such an indentation.
  • the clamping spring having a contact leg resting on the busbar, a spring bow adjoining the contact leg and a clamping leg adjoining the spring bow and with a free clamping end pointing in the direction of the busbar, it is therefore advantageous that the Busbar is tiltably mounted on the contact leg.
  • the busbar then has protruding bearing lugs which, for the tiltable mounting of the busbar on the contact leg, each dip into an associated bearing opening or bearing recess.
  • the busbar is therefore not attached immovably to the contact limb by welding or riveting, but is suspended in the contact limb and mounted on the contact limb such that it can be tilted.
  • the busbar By latching the busbar on the contact leg by means of bearing lugs, the busbar is fixed in position relative to the at least one clamping spring.
  • bearing openings or bearing troughs can either be surrounded on all sides by free end sections of the contact leg.
  • bearing openings on the free end section of the contact leg are designed as indentations on the edge regions of the free end section. Such indentations are then only partially surrounded by the free end section of the contact leg and open to the outside over part of the circumference.
  • a plurality of clamping springs are lined up next to one another at a distance from one another and have a common busbar extending in the direction of lacing up the clamping springs.
  • a box terminal can be implemented in which electrical conductors that are connected to the clamping springs arranged next to one another can be connected to one another in an electrically conductive manner via the busbar.
  • the plurality of clamping springs preferably has a common free end region of the contact legs that extends in the direction in which the clamping springs are arranged.
  • the clamping springs are formed integrally, ie in one piece, with the free end region. This ensures that the clamping springs are arranged in a stable position with respect to one another via the common free end section and that a good flat support is provided for the busbar.
  • FIG. 1 shows a perspective view of a first embodiment of a spring-loaded terminal connection 1 which has three clamping springs 2 which are arranged next to one another and are bent in the shape of a loop.
  • Each clamping spring 2 has a clamping leg 3 with a free clamping end 4.
  • the clamping leg 3 merges into a spring arch 5, to which a contact leg 6 is connected.
  • the contact leg 6 is bent over in a U-shape to form a conductor receiving pocket 7 for receiving a stripped free end of an electrical conductor clamped to the spring-loaded terminal connection.
  • the free end section 8 of the contact leg 6 forms a support for a common busbar 9.
  • the busbar 9 extends in the direction A of the juxtaposed clamping springs 2 and transversely to the conductor insertion direction L.
  • the busbar 9 is supported on the free end section 8 of the contact leg 6. It can also be seen that the contact legs 6 are formed in one piece, integrally with the free end region 8 and the clamping springs 2 arranged next to one another and arranged at a distance from one another are thus connected to one another via the common free end section 8.
  • the free clamping end 4 of the clamping leg is located 3 on the busbar 9.
  • a clamping point is created between a clamping edge 10 on the free clamping end 4 and a contact edge 11 on the busbar 9 in order to make electrical contact between the electrical conductor and the busbar 9.
  • the free clamping end 4 is bent in relation to the clamping leg 3 in the direction of the busbar 9.
  • the contact legs 6 each have two opposite indentations 12 in a section above the busbar 9 and the free clamping end 4 in the rest state. In this way, a web 13 is created which has a width that is reduced in comparison to the adjoining sections of the contact leg 6. It is also clear that the web 13 and the indentations 12 have a very short length compared to the adjoining length of the contact leg 6 up to the busbar 9. The indentation extends over a length that is less than a quarter of the total length of the contact leg 6.
  • the indentations 12 and webs 13 implemented with them create a type of hinge between the spring arch 5 adjoining the web 13 with the clamping leg 3 and the remaining area of the contact leg 6 up to the busbar 9 adjoining the web 13.
  • a force exerted upon actuation of the clamping leg 3, for example by an actuating lever, an actuating slide or a screwdriver, and a force transmitted to the contact leg 6 when an electrical conductor is clamped is reduced by the web 13 by slight deformation (bending) of the web 13, reducing the to a force exerted in the adjacent insulating material housing and diverted to the busbar 9.
  • a flexible section of the contact leg 6 adjoining the spring bow 5 is created with which the force can be exerted can be reduced to an insulating housing.
  • Figure 2 omits a perspective view of the clamping springs 2 of the spring-loaded terminal connection 1 Figure 1 detect.
  • the U-shaped bent contact legs 6 are integrally connected to one another via a common free end section 8, which extends in the rowing direction A and transversely to the conductor insertion direction L over the three clamping springs 2.
  • the free end section 8 has at least one bearing opening 14 for receiving a bearing nose of the busbar 9. In this way, the busbar 9 can be supported on the free end section 8 and fixed in position.
  • the busbar 9 is not so firmly connected as it is to the free end section 8 that it cannot perform a tilting movement.
  • the spring-loaded terminal connection 1 is thus flexibly adapted to the respective clamped-on electrical conductor.
  • Figure 3 omits a side view of the spring-loaded terminal connection 1 Figure 1 detect. It becomes clear here that the busbar 9 is supported on the free end section 8 of the contact legs 6. It can also be seen that a clamping edge 10 of the free clamping end 4 of the clamping leg 3 rests on the busbar 9 in the idle state.
  • the web 13 formed by the indentations 12 is seen in a direction transverse to the conductor insertion direction L above the busbar 9 and the free terminal end 4. With the help of the webs 12, a flexible joint between the section formed by the spring bow 5 and the clamping legs 3 and that between the busbar 9 and the adjoining section of the contact leg 6 created.
  • the clamping force of the free clamping end 4 on an electrical conductor is applied essentially by the spring bow 5.
  • the flexible joint formed by the webs 13 means that further deformation forces are flexibly absorbed and are not transferred to the insulating material housing to a large extent.
  • Figure 4 leaves out a perspective view of the spring-loaded terminal connection 1 Figure 1 recognize from below. It becomes clear here that the free end section 8 of the contact legs 6 has bearing openings 14 into which bearing lugs 15 protruding from the underside of the busbar 9 protrude. The busbar 9 is therefore not so firmly connected to the free end section 8 that the busbar 9 cannot be tilted with respect to the free end section 8. However, it is fixed in position in the direction A and transversely with the aid of the bearing lugs 15 and the bearing opening 14.
  • Figure 5 omits a top view of the spring-loaded terminal connection Figure 1 detect. It is clear here that the opposing indentations 12 on the edge regions of the contact legs 6 adjoin the transition to the spring arch 5 form webs 13. It becomes clear that the indentations 12 and webs 13 are arranged in the plan view above the busbar 9 and the free clamping end 4 of the clamping springs 2 in the rest position.
  • the webs 13 have a smaller width than the width of the adjoining section of the contact leg 6 and of the spring bow 5.
  • depressions can be seen on the busbar, which belong to the bearing lugs 15 protruding downwards. These bearing lugs 15 are pressed down from the material of the busbar 9 in the forming process.
  • busbar 9 has an inclined ramp 16 in front of the free clamping end 4 of the clamping spring 2 and the contact edge 11, as seen in the conductor insertion direction L. This facilitates the introduction of an electrical conductor to the terminal point.
  • Figure 6 leaves out a view of the spring-loaded terminal connection 1 Figure 1 recognize from below.
  • the bearing lugs 15 protruding from the underside of the busbar 9 plunge into the bearing opening 14 of the free end section 8 of the contact legs 6.
  • Figure 7 shows a second embodiment of a spring-loaded terminal connection 1 in the perspective view.
  • the contact legs 6 have webs 13 formed by opposing indentations 12 in an area adjoining the spring arch 5.
  • the embodiments differ, on the one hand, in the mounting of the busbar 9 on the contact legs 6 and, on the other hand, in the design of the clamping leg 3.
  • actuating tabs 19 protrude from the edge regions of the clamping leg 3.
  • the actuating tabs 19 are bent slightly upwards in the direction of the contact limb 6 and form an actuation support on which an actuating element, such as a pivot lever, can apply an actuating force to open a clamping point by lifting the clamping limb 3 in the direction of the section of the contact limb 6 located above it.
  • the free clamping end 4 is bent in relation to the clamping leg 3 in the direction of the busbar 9.
  • two actuating tabs 19 for a clamping spring 2 are provided on the two opposite edge regions of the clamping leg 3.
  • Figure 8 shows a side view of the spring-loaded terminal connection from FIG. It becomes clear once again that the busbar rests in the free end of the contact leg bent upwards in the direction of the busbar 9 through the U-shaped bend 17 and additionally with the bearing lugs 15 located behind it, which dip into the bearing openings 14 of the section of the contact leg 6 be fixed in position.
  • Figure 9 omits a perspective view of the clamping spring 2 for the spring-loaded terminal connection Figures 7 and 8 detect. It becomes clear that now the individual clamping springs 2 arranged next to one another are separate from one another. In this embodiment, the bearing openings 14 are formed by indentations in the edge region of the contact leg 6 in the free end section and are therefore not completely closed on the circumference. It is also clear that the free end 18 of the free end section 8 is bent upwards from the plane of the free end section 8 in the direction of the web 13 or in the direction of the free clamping end 4 of the clamping leg located approximately above it. It can also be seen that the actuating tabs 19 are formed on both sides at the edge regions of the clamping leg 3 by cutting or punching free the clamping end 4 and folding it down in the direction of the free end section 8.
  • Figure 10 omits a plan view of the spring-loaded terminal connection 1 Figure 7 detect. It is clear here that the actuating tabs 19 are in the top view in the space below the webs 13 and the indentations 12 forming them. The free clamping end 4 of the clamping leg 3, the actuating tabs 19 and the indentations 12 for forming the webs 13 are thus approximately one above the other in alignment.
  • Figure 11 omits a view of the spring-loaded terminal connection 1 Figure 7 Recognize the busbar 9 from below. It becomes clear here that the protruding bearing lugs 15 dip into the bearing openings 14 formed from indentations on the free end section 8 of the contact legs 6.
  • Figure 12 shows a perspective view of a conductor connection terminal 20.
  • the conductor connection terminal 20 has an insulating material housing 21 into which one of the spring-loaded terminal connections 1 described above is installed with three clamping springs 2 arranged next to one another (not visible).
  • Actuating levers 22 are accommodated pivotably in the insulating material housing 21.
  • the insulating material housing has conductor insertion openings 23 on the front side for inserting electrical conductors to an associated terminal point of a clamping spring 2. These conductor insertion openings 23 extend into conductor insertion opening L into the interior of the insulating material housing 21.
  • test opening 24 extending in the conductor insertion direction L is present above the central conductor insertion opening 23.
  • the test opening 24 is open at the front and towards the adjoining spring-force terminal connection 1 in the interior, so that with the aid of an inserted test tool it can be determined whether there is a voltage potential at the spring-force terminal connection 1.
  • Figure 13 shows a top view of the conductor connection terminal 20 with the section lines AA and BB.
  • the upper, in Figure 12 left, operating lever is in the open position and is pivoted away from the insulating housing. This opens the clamping point of the associated clamping spring.
  • the other two actuating levers 22 are folded down in the closed position in the direction of the insulating material housing 21 so that the clamping point is closed and the associated clamping spring exerts a clamping force via the free clamping section 4 on the busbar underneath and any electrical conductor (not shown) lying therebetween.
  • Figure 14 omits a side sectional view in section BB through the conductor connection terminal 21 Figures 12 and 13 detect. It becomes clear here that a spring-loaded terminal connection 1 described above is built into the interior of the insulating material housing 21.
  • the insulated housing 21 is designed in two parts and has a clamping housing part 25 and a cover part 26 that closes this at the rear.
  • the actuating lever 22, which is pivotably mounted in the insulating material housing 21 has a pivot bearing pin 27 with a V-shaped cutout 28 in the interior between the busbar 9 and the web 13 of about 80 to 120 ° (in the illustrated embodiment, about 110 °). With the V-shaped cutout 28, an actuating contour 29 is created which acts on an associated actuating tab 19 in order to displace the clamping leg 3 in the direction of the web 13 located above it in order to open the clamping point.
  • Figure 15 shows a side sectional view of the conductor connection terminal 20 with the actuating lever 22 closed in section AA of Figure 13 detect. It becomes clear here that the clamping point is now closed. This is achieved in that the pivot pin 27 is rotated by approximately 90 °. The actuating tab 19 is released and the clamping leg 3 can move freely under the spring force applied by the spring bow 5 and exert a clamping force on the busbar and an electrical conductor possibly arranged between the busbar and the free clamping end 4.
  • a type of spring joint or hinge is formed by the web 13, so that a force acting via the clamping leg 3 and the spring bow is flexibly absorbed by the clamping spring 2 itself without transferring significant force to the insulating material housing.
  • Figure 16 shows a second embodiment of a conductor connection terminal 20.
  • the actuating lever 22 and the insulating housing 21 located between them are also designed to be slightly different.
  • Figure 17 omits a top view of the second embodiment of the conductor connection terminal 20 Figure 16 recognize with the cutting lines AA and BB.
  • Figure 18 shows the conductor connection terminal 20 Figures 16 and 17 in section BB of the open actuating lever 22 with the terminal point open.
  • a part-circular pivot pin 27 is arranged at the level above the busbar 9 and below the web 13 and is pivotably mounted in the insulating material housing.
  • the busbar 9 with a U-shaped bend 17 is comparable to the second exemplary embodiment of a spring-loaded terminal connection 1 according to FIG Figures 7 to 11 executed.
  • the actuating contour 29 formed on the pivot pin 27 is somewhat different than in the first embodiment shown in FIG Figures 14 and 15 executed, functionally but comparable. Essentially, reference can therefore be made to the description relating to the first exemplary embodiment.
  • Figure 19 omits a side sectional view of the conductor connection terminal 20 Figures 16 and 17 Recognize in section AA with the actuating lever 22 closed.
  • the terminal point is closed by the free terminal end 4 of the clamping leg 3 is pressed down in the direction of the busbar 9 by the spring force of the clamping spring 5. Without an inserted electrical conductor as shown, the free terminal end 4 then rests on the busbar.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Clamps And Clips (AREA)
  • Installation Of Bus-Bars (AREA)

Description

Die Erfindung betrifft einen Federkraftklemmanschluss mit mindestens einer schlaufenförmig gebogenen Klemmfeder und einer Stromschiene, wobei die Klemmfeder einen an der Stromschiene anliegenden Anlageschenkel, einen sich an den Anlageschenkel anschließenden Federbogen und einen sich an den Federbogen anschließenden und mit einem freien Klemmende in Richtung Stromschiene weisenden Klemmschenkel hat.The invention relates to a spring-loaded clamping connection with at least one loop-shaped bent clamping spring and a busbar, the clamping spring having a contact leg adjacent to the busbar, a spring arch adjoining the contact leg and a clamping leg adjoining the spring arch and with a free clamping end pointing in the direction of the busbar .

Die Erfindung betrifft weiterhin eine Leiteranschlussklemme mit einem Isolierstoffgehäuse.The invention further relates to a conductor connection terminal with an insulating material housing.

Solche Federkraftklemmanschlüsse werden zum Anklemmen elektrischer Leiter z.B. in Reihenklemmen, Dosenklemmen, Leiterplattensteckverbindern, Gerätesteckverbindern oder ähnlichem eingesetzt.Such spring-loaded terminal connections are used to connect electrical conductors, e.g. in terminal blocks, box terminals, circuit board connectors, device connectors or the like.

DE 10 2004 045 026 B3 offenbart eine elektrische Anschluss- oder Verbindungsklemme mit einer schlaufenförmigen Klemmfeder, die einen U-förmig gebogenen Anlageschenkel, eine sich hieran anschließenden Federbogen und einen sich an den Federbogen anschließenden Klemmschenkel hat. Der Anlageschenkel hat im freien Endbereich eine Ausnehmung, durch die ein Stromschienenstück hindurchgeführt ist, um auf einem aus der Ausnehmung freigestanzten Halterabschnitt und einer die Ausnehmung begrenzenden Querkante aufzuliegen. Das freie Klemmende des Klemmschenkels weist in Richtung Stromschiene und bildet zusammen mit der Stromschiene eine Klemmstelle für einen anzuschließenden elektrischen Leiter. DE 10 2004 045 026 B3 discloses an electrical connection or connecting terminal with a loop-shaped clamping spring which has a U-shaped bent contact leg, an adjoining spring bow and a clamping leg adjoining the spring bow. In the free end region, the contact leg has a recess through which a busbar piece is passed in order to rest on a holder section punched out of the recess and on a transverse edge delimiting the recess. The free clamping end of the clamping leg points in the direction of the busbar and, together with the busbar, forms a clamping point for an electrical conductor to be connected.

WO 2012/000639 A1 zeigt eine Anschlussklemme mit einer schlaufenförmigen Klemmfeder, die am freien Klemmende des Klemmschenkels seitlich vorstehende Betätigungslaschen hat. Ein linear verschiebbarer Betätigungsdrücker wirkt mit den Betätigungslaschen zusammen, um eine durch den Klemmschenkel und die eine Stromschiene gebildete Klemmstelle und/oder Entnehmen eines elektrischen Leiters zu öffnen. Die Klemmfeder weist zwei freie Drehpunkte auf, um die der Klemmschenkel bei der Öffnungs- und Schließbewegung jeweils frei drehbar gelagert ist. WO 2012/000639 A1 shows a connection terminal with a loop-shaped clamping spring, which has laterally protruding actuating tabs on the free clamping end of the clamping leg. A linearly displaceable actuating lever cooperates with the actuating tabs to a through to open the clamping leg and the clamping point formed by a busbar and / or to remove an electrical conductor. The clamping spring has two free pivot points about which the clamping leg is freely rotatably mounted during the opening and closing movements.

Aus DE 10 2005 048 972 A1 ist bekannt, den Klemmschenkel einer schlaufenförmigen Klemmfeder ausgehend vom Federbogen sich verjüngend und zum freien Klemmende hin sich wieder verbreiternd auszubilden. Der Anlageschenkel ist über eine wesentliche Länge angrenzend an die Stromschiene ebenfalls schmaler als in dem sich an den Federbogen anschließenden Abschnitt ausgeführt.Out DE 10 2005 048 972 A1 It is known to form the clamping leg of a loop-shaped clamping spring tapering from the spring arch and widening again towards the free clamping end. The contact leg is also designed to be narrower over a substantial length adjacent to the busbar than in the section adjoining the spring arch.

DE 75 37 982 U1 offenbart einen Federkraftklemmanschluss mit einer schlaufenförmig gebogenen Klemmfeder und einer Stromschiene. Diese Stromschiene ist im Übergang zum Federbogen durch eine Ausnehmung des Anlageschenkels bzw. des Federbogens geführt. Auch das freie Klemmende des Klemmschenkels hat eine zentrale Ausnehmung, aus der ein Materiallappen zur Bildung einer freien Klemmkante zum Einklemmen eines elektrischen Leiters herausgebogen ist. DE 75 37 982 U1 discloses a spring-loaded terminal connection with a loop-shaped bent clamping spring and a busbar. This busbar is guided in the transition to the spring arch through a recess in the contact leg or the spring arch. The free clamping end of the clamping leg also has a central recess from which a flap of material is bent out to form a free clamping edge for clamping an electrical conductor.

Ausgehend hiervon ist es Aufgabe der vorliegenden Erfindung einen verbesserten Federkraftklemmkontakt und eine verbesserte Leiteranschlussklemme zu schaffen, die einen das Isolierstoffgehäuse entlastenden Einbau in das Isolierstoffgehäuse ermöglicht.On the basis of this, the object of the present invention is to create an improved spring-loaded terminal contact and an improved conductor connection terminal which enables installation in the insulating material housing to relieve the pressure on the insulating material housing.

Die Aufgabe wird durch den Federkraftklemmanschluss mit den Merkmalen des Anspruchs 1 und die Leiteranschlussklemme mit den Merkmalen des Anspruchs 8 gelöst. Vorteilhafte Ausführungsformen sind in den Unteransprüchen beschrieben.The object is achieved by the spring-loaded terminal connection with the features of claim 1 and the conductor connection terminal with the features of claim 8. Advantageous embodiments are described in the subclaims.

Durch die mindestens eine Einbuchtung wird ein kurzer im Vergleich zum daran anschließenden Abschnitt des Anlageschenkels schmalerer Steg geschaffen. Ein solcher Steg bildet ein flexibles Gelenk oder Scharnier. Eine auf über den Klemmschenkel und den Federbogen auf die Klemmfeder wirkende Kraft wird über das flexible Gelenk, d.h. den Steg, derart abgefangen, dass sich die Klemmfeder ohne Ausübung übermäßiger Kräfte auf ein anschließendes Isolierstoffgehäuse so optimal verformt, dass die Kraft zum anschließenden Anlageschenkel und auf die daran angeordnete Stromschiene abgeleitet wird. Damit ist der Kraftanschluss der Klemmfeder auf ein Isolierstoffgehäuse reduziert. Mit Hilfe der mindestens einen Einbuchtung im Anlageschenkel sind somit Freischnitte zur Kraftentlastung des Isolierstoffgehäuses bereitgestellt.The at least one indentation creates a short web, which is narrower compared to the adjoining section of the contact leg. Such a web forms a flexible joint or hinge. One on the clamp leg and the spring bow on the clamp spring Acting force is intercepted via the flexible joint, ie the web, in such a way that the clamping spring is deformed so optimally without exerting excessive forces on an adjoining insulating material housing that the force is diverted to the adjoining contact leg and the busbar attached to it. The force connection of the clamping spring is thus reduced to an insulating material housing. With the help of the at least one indentation in the contact leg, cutouts for relieving the force of the insulating material housing are thus provided.

Durch das Vorsehen mindestens einer Einbuchtung, d.h. einer Ausnehmung begrenzter Länge an Randbereich eines Anlageschenkels zur Bildung einer Bucht wird weiterhin erreicht, dass ein Freiraum im Anlageschenkel zur Aufnahme von Abschnitten eines den Federkraftklemmanschluss umgebenden Isolierstoffgehäuses oder unter Umständen auch von Abschnitten eines Betätigungselementes, das in das Isolierstoffgehäuse eingebaut ist, geschaffen wird, wenn der Federkraftklemmanschluss zur Bildung einer Leiteranschlussklemme bestimmungsgemäß in das Isolierstoffgehäuse eingebaut ist.By providing at least one indentation, ie a recess of limited length at the edge area of a contact leg to form a bay, it is further achieved that a free space in the contact leg for receiving sections of an insulating material housing surrounding the spring-loaded terminal connection or, under certain circumstances, sections of an actuating element that is inserted into the Insulating housing is installed, is created when the spring-loaded terminal connection is properly installed in the insulating material housing to form a conductor connection terminal.

Unter Einbuchtung im Sinne der vorliegenden Erfindung wird somit eine relativ kurze Ausnehmung am Randbereich des Anlageschenkels verstanden, der im Bereich der Einbuchtung zu einem Steg mit im Vergleich zu den sich daran anschließenden Abschnitten des Anlageschenkels verringerter Breite führt, wobei der Steg im Verhältnis zu den übrigen Abschnitten des Anlageschenkels eine geringere Länge hat.Indentation in the sense of the present invention is understood to mean a relatively short recess at the edge area of the contact leg, which in the area of the indentation leads to a web with a reduced width compared to the adjoining sections of the contact arm, the web in relation to the rest Sections of the contact leg has a shorter length.

Besonders vorteilhaft ist es, wenn beidseits eines Anlageschenkels ein Paar einander gegenüberliegende Einbuchtungen vorhanden sind und der Anlageschenkel im Bereich der Einbuchtungen einen Steg mit im Vergleich zu den zum Federbogen und zur Stromschiene hin gerichteten Abschnitten des Anlageschenkels verringerte Breite hat. Damit wird ein beidseits durch Einbuchtungen relativ zu den Seitenkanten des Anlageschenkels nach innen versetzter Steg geschaffen. Dies hat den Vorteil, dass Abschnitte des Isolierstoffgehäuses in einen Raum eintauchen können, der durch die sich an den Steg anschließenden Seitenkanten des Anlageschenkels begrenzt ist.It is particularly advantageous if a pair of opposing indentations are present on both sides of a contact leg and the contact leg in the area of the indentations has a web with a reduced width compared to the sections of the contact leg directed towards the spring arch and the busbar. In this way, indentations on both sides are made relative to the side edges of the contact leg inwardly offset bridge created. This has the advantage that sections of the insulating material housing can dip into a space which is delimited by the side edges of the contact leg adjoining the web.

Die mindestens eine Einbuchtung ist vorzugsweise in einem Raum oberhalb der Stromschiene angeordnet. Damit wird gegenüberliegend der Klemmstelle für das Anschließen eines elektrischen Leiters ein Scharnier zwischen dem mit der Stromschiene verbundenen Abschnitt des Anlageschenkels und dem über den Federbogen mit dem Klemmschenkel verbundenen Abschnitts des Anlageschenkels geschaffen, der zu einer Kraftentlastung des den Federkraftklemmanschluss umgebenen Isolierstoffgehäuses führt.The at least one indentation is preferably arranged in a space above the busbar. This creates a hinge opposite the terminal point for connecting an electrical conductor between the section of the contact leg connected to the busbar and the section of the contact leg connected to the clamping leg via the spring arch, which relieves the force of the insulating material housing surrounding the spring-loaded terminal connection.

Die mindestens eine Einbuchtung befindet sich vorzugsweise in einem Raum oberhalb des freien Klemmendes des Klemmschenkels im Ruhezustand der Klemmfeder, indem der Klemmschenkel auf der Stromschiene aufliegt. Das durch die Einbuchtungen mit dem Steg verringerter Breite geschaffene Scharnier der Klemmfeder wirkt damit im Bezug auf das freie Klemmende des Klemmschenkels und ein die Klemmfeder umgebendes Isolierstoffgehäuse an einer optimalen Position.The at least one indentation is preferably located in a space above the free clamping end of the clamping leg in the rest state of the clamping spring in that the clamping leg rests on the busbar. The hinge of the clamping spring created by the indentations with the web of reduced width thus acts in an optimal position in relation to the free clamping end of the clamping leg and an insulating material housing surrounding the clamping spring.

Besonders vorteilhaft ist es, wenn die Stromschiene kippbeweglich an dem Anlageschenkel gelagert ist. Damit wird eine nachgiebige, sich an den Leiter anpassende Auflaufschräge der Stromschiene bereitgestellt, die durch die eine auf das Isolierstoffgehäuse wirkende Kraft beim Einstecken und Anklemmen eines elektrischen Leiters an den Federkraftklemmanschluss vorteilhaft verringert werden kann. Die kippbewegliche Lagerung der Stromschiene an dem Anlageschenkel ist im Prinzip unabhängig von der oben beschriebenen speziellen Ausführungsform des Federkraftklemmanschlusses mit einer Einbuchtung und kann auch bei Klemmfedern ohne eine solche Einbuchtung seine vorteilhafte Wirkung erzielen. Bei einer schlaufenförmig gebogenen Klemmfeder mit einer Stromschiene, wobei die Klemmfeder einen an der Stromschiene anliegenden Anlageschenkel, einen sich an den Anlageschenkel anschließenden Federbogen und einen sich an den Federbogen anschließenden und mit einem freien Klemmende in Richtung Stromschiene weisenden Klemmschenkel hat, ist es somit vorteilhaft, dass die Stromschiene kippbeweglich an dem Anlageschenkel gelagert ist.It is particularly advantageous if the busbar is mounted on the contact leg so as to be tiltable. This provides a flexible run-up slope of the busbar that adapts to the conductor and can advantageously be reduced by the force acting on the insulating material housing when an electrical conductor is inserted and clamped to the spring-loaded terminal connection. The tiltable mounting of the busbar on the contact leg is in principle independent of the above-described special embodiment of the spring-loaded terminal connection with an indentation and can also achieve its advantageous effect with clamping springs without such an indentation. At a Loop-shaped bent clamping spring with a busbar, the clamping spring having a contact leg resting on the busbar, a spring bow adjoining the contact leg and a clamping leg adjoining the spring bow and with a free clamping end pointing in the direction of the busbar, it is therefore advantageous that the Busbar is tiltably mounted on the contact leg.

Besonders vorteilhaft ist es, wenn der Anlageschenkel an seinem freien Endabschnitt Lageröffnungen oder Lagermulden aufweist. Die Stromschiene hat dann vorstehende Lagernasen, die zur kippbeweglichen Lagerung der Stromschiene an dem Anlageschenkel jeweils in eine zugeordnete Lageröffnung oder Lagermulde eintauchen.It when the contact leg has bearing openings or bearing depressions on its free end section is particularly advantageous. The busbar then has protruding bearing lugs which, for the tiltable mounting of the busbar on the contact leg, each dip into an associated bearing opening or bearing recess.

Die Stromschiene ist damit nicht durch Verschweißen oder Vernieten unbeweglich an dem Anlageschenkel angebracht, sondern in den Anlageschenkel eingehängt und kippbeweglich auf dem Anlageschenkel gelagert. Durch die Verrastung der Stromschiene an dem Anlageschenkel mittels Lagernasen wird die Stromschiene relativ zu der mindestens einen Klemmfeder lagefixiert.The busbar is therefore not attached immovably to the contact limb by welding or riveting, but is suspended in the contact limb and mounted on the contact limb such that it can be tilted. By latching the busbar on the contact leg by means of bearing lugs, the busbar is fixed in position relative to the at least one clamping spring.

Die Lageröffnungen oder Lagermulden können entweder allseits von freien Endabschnitten des Anlageschenkels umgeben sein. Denkbar ist aber auch, dass Lageröffnungen an den freien Endabschnitt des Anlageschenkels als Einbuchtungen an den Randbereichen des freien Endabschnitts ausgebildet sind. Solche Einbuchtungen sind dann nur teilweise von dem freien Endabschnitt des Anlageschenkels umgeben und über einen Teil des Umfangs nach Außen geöffnet.The bearing openings or bearing troughs can either be surrounded on all sides by free end sections of the contact leg. However, it is also conceivable that bearing openings on the free end section of the contact leg are designed as indentations on the edge regions of the free end section. Such indentations are then only partially surrounded by the free end section of the contact leg and open to the outside over part of the circumference.

Besonders vorteilhaft ist es, wenn eine Mehrzahl von Klemmfedern im Abstand zueinander nebeneinander aufgereiht ist und eine gemeinsame, sich in Aufreihrichtung der Klemmfedern erstreckende Stromschiene haben. Auf diese Weise kann z.B. eine Dosenklemme realisiert werden, bei der elektrische Leiter, die an die nebeneinander angeordneten Klemmfedern angeschlossen sind, elektrisch leitend über die Stromschiene miteinander verbunden werden können.It is particularly advantageous if a plurality of clamping springs are lined up next to one another at a distance from one another and have a common busbar extending in the direction of lacing up the clamping springs. In this way, for example, a box terminal can be implemented in which electrical conductors that are connected to the clamping springs arranged next to one another can be connected to one another in an electrically conductive manner via the busbar.

Die Mehrzahl von Klemmfedern hat vorzugsweise einen gemeinsamen, sich in Anreihrichtung der Klemmfedern erstreckenden freien Endbereich der Anlageschenkel. Die Klemmfedern sind dabei integral, d.h. einstückig, mit dem freien Endbereich geformt. Damit wird erreicht, dass die Klemmfedern über den gemeinsamen freien Endabschnitt lagestabil zueinander angeordnet sind und eine gute flächige Auflage für die Stromschiene bereitgestellt wird.The plurality of clamping springs preferably has a common free end region of the contact legs that extends in the direction in which the clamping springs are arranged. The clamping springs are formed integrally, ie in one piece, with the free end region. This ensures that the clamping springs are arranged in a stable position with respect to one another via the common free end section and that a good flat support is provided for the busbar.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels mit den beigefügten Zeichnungen näher erläutert. Es zeigen:

Figur 1
- Perspektivische Ansicht einer ersten Ausführungsform eines Federkraftklemmanschlusses mit drei nebeneinander angeordneten Klemmfedern und einer gemeinsamen Stromschiene;
Figur 2
- Perspektivische Ansicht der Klemmfedern des Federkraftklemmanschlusses aus Figur 1;
Figur 3
- Seitenansicht des Federkraftklemmanschlusses aus Figur 1;
Figur 4
- Perspektivische Ansicht des Federkraftklemmanschlusses aus Figur 1 und 3 von unten;
Figur 5
- Draufsicht auf den Federkraftklemmanschluss aus Figur 1;
Figur 6
- Draufsicht auf den Federkraftklemmanschluss aus Figur 1 von unten;
Figur 7
- Perspektivische Ansicht einer zweiten Ausführungsform eines Federkraftklemmanschlusses;
Figur 8
- Seitenansicht des Federkraftklemmanschlusses aus Figur 7;
Figur 9
- Perspektivische Ansicht einer Klemmfeder des Federkraftklemmanschlusses aus Figur 7;
Figur 10
- Draufsicht auf den Federkraftklemmanschluss aus Figur 7;
Figur 11
- Ansicht des Federkraftklemmanschlusses aus Figur 7 von unten;
Figur 12
- Perspektivische Ansicht einer Leiteranschlussklemme mit Betätigungshebel;
Figur 13
- Draufsicht auf die Leiteranschlussklemme aus Figur 12;
Figur 14
- Seiten-Schnittansicht durch die Leiteranschlussklemme aus Figuren 12 und 13 im Schnitt B-B bei geöffneten Betätigungshebel;
Figur 15
- Seiten-Schnittansicht durch die Leiteranschlussklemme aus Figuren 12 und 13 im Schnitt A-A bei geschlossenen Betätigungshebel;
Figur 16
- Perspektivische Ansicht einer zweiten Ausführungsform einer Leiteranschlussklemme;
Figur 17
- Draufsicht auf die Leiteranschlussklemme aus Figur 16;
Figur 18
- Seiten-Schnittansicht durch die Leiteranschlussklemme aus Figuren 16 und 17 im Schnitt B-B bei geöffneten Betätigungshebel;
Figur 19
- Seiten-Schnittansicht durch die Leiteranschlussklemme der Figuren 16 und 17 im Schnitt A-A bei geschlossenen Betätigungshebel.
The invention is explained in more detail below using an exemplary embodiment with the accompanying drawings. Show it:
Figure 1
- Perspective view of a first embodiment of a spring-loaded terminal connection with three clamping springs arranged next to one another and a common busbar;
Figure 2
- Perspective view of the clamping springs of the spring clamp connection from Figure 1 ;
Figure 3
- Side view of the spring-loaded terminal connection Figure 1 ;
Figure 4
- Perspective view of the spring clamp connection from Figure 1 and 3 from underneath;
Figure 5
- Top view of the spring-loaded terminal connection Figure 1 ;
Figure 6
- Top view of the spring-loaded terminal connection Figure 1 from underneath;
Figure 7
- Perspective view of a second embodiment of a spring-loaded terminal connection;
Figure 8
- Side view of the spring-loaded terminal connection Figure 7 ;
Figure 9
- Perspective view of a clamping spring of the spring-loaded terminal connection from Figure 7 ;
Figure 10
- Top view of the spring-loaded terminal connection Figure 7 ;
Figure 11
- View of the spring-loaded terminal connection Figure 7 from underneath;
Figure 12
- Perspective view of a conductor connection terminal with operating lever;
Figure 13
- Top view of the conductor connection terminal Figure 12 ;
Figure 14
- Side sectional view through the conductor connection terminal Figures 12 and 13 in section BB with the operating lever open;
Figure 15
- Side sectional view through the conductor connection terminal Figures 12 and 13 in section AA with the actuating lever closed;
Figure 16
- Perspective view of a second embodiment of a conductor connection terminal;
Figure 17
- Top view of the conductor connection terminal Figure 16 ;
Figure 18
- Side sectional view through the conductor connection terminal Figures 16 and 17 in section BB with the operating lever open;
Figure 19
- Side sectional view through the conductor connection terminal of the Figures 16 and 17 in section AA with the operating lever closed.

Figur 1 lässt eine perspektivische Ansicht einer ersten Ausführungsform eines Federkraftklemmanschlusses 1 erkennen, der drei nebeneinander angeordnete, schlaufenförmig gebogene Klemmfedern 2 hat. Jede Klemmfeder 2 hat einen Klemmschenkel 3 mit einem freien Klemmende 4. Der Klemmschenkel 3 geht in einen Federbogen 5 über, an den sich ein Anlageschenkel 6 anschließt. Der Anlageschenkel 6 ist unter Bildung einer Leiteraufnahmetasche 7 zur Aufnahme eines abisolierten freien Endes eines an den Federkraftklemmanschluss angeklemmten elektrischen Leiters U-förmig umgebogen. Am freien Ende des Anlageschenkels 6 bildet der freie Endabschnitt 8 der Anlageschenkel 6 ein Auflager für eine gemeinsame Stromschiene 9. Die Stromschiene 9 erstreckt sich dabei in Anreihrichtung A der nebeneinander angeordneten Klemmfedern 2 und quer zur Leitereinsteckrichtung L. Figure 1 shows a perspective view of a first embodiment of a spring-loaded terminal connection 1 which has three clamping springs 2 which are arranged next to one another and are bent in the shape of a loop. Each clamping spring 2 has a clamping leg 3 with a free clamping end 4. The clamping leg 3 merges into a spring arch 5, to which a contact leg 6 is connected. The contact leg 6 is bent over in a U-shape to form a conductor receiving pocket 7 for receiving a stripped free end of an electrical conductor clamped to the spring-loaded terminal connection. At the free end of the contact leg 6, the free end section 8 of the contact leg 6 forms a support for a common busbar 9. The busbar 9 extends in the direction A of the juxtaposed clamping springs 2 and transversely to the conductor insertion direction L.

Deutlich wird, dass die Stromschiene 9 auf dem freien Endabschnitt 8 der Anlageschenkel 6 aufgelagert ist. Erkennbar ist weiterhin, dass die Anlageschenkel 6 einstückig, integral mit dem freien Endbereich 8 geformt sind und die nebeneinander angeordneten im Abstand zueinander angeordneten Klemmfedern 2 somit über den gemeinsamen freien Endabschnitt 8 miteinander verbunden sind.It becomes clear that the busbar 9 is supported on the free end section 8 of the contact leg 6. It can also be seen that the contact legs 6 are formed in one piece, integrally with the free end region 8 and the clamping springs 2 arranged next to one another and arranged at a distance from one another are thus connected to one another via the common free end section 8.

In der dargestellten Ruheposition liegt das freie Klemmende 4 des Klemmschenkels 3 auf der Stromschiene 9 auf. Bei Einklemmen eines elektrischen Leiters zwischen dem freien Klemmende 4 und der Stromschiene 9 wird eine Klemmstelle zwischen einer Klemmkante 10 am freien Klemmende 4 und einer Kontaktkante 11 an der Stromschiene 9 geschaffen, um den elektrischen Leiter mit der Stromschiene 9 elektrisch zu kontaktieren. Das freie Klemmende 4 ist gegenüber dem Klemmschenkel 3 in Richtung der Stromschiene 9 abgebogen.In the rest position shown, the free clamping end 4 of the clamping leg is located 3 on the busbar 9. When an electrical conductor is clamped between the free clamping end 4 and the busbar 9, a clamping point is created between a clamping edge 10 on the free clamping end 4 and a contact edge 11 on the busbar 9 in order to make electrical contact between the electrical conductor and the busbar 9. The free clamping end 4 is bent in relation to the clamping leg 3 in the direction of the busbar 9.

Deutlich wird, dass die Anlageschenkel 6 in einem Abschnitt oberhalb der Stromschiene 9 und des freien Klemmendes 4 im Ruhezustand jeweils zwei einander gegenüberliegende Einbuchtungen 12 haben. Hierdurch wird ein Steg 13 geschaffen, der eine im Vergleich zu den angrenzenden Abschnitten des Anlageschenkels 6 verringerte Breite hat. Deutlich wird auch, dass der Steg 13 und die Einbuchtungen 12 eine im Vergleich zu der sich daran anschließenden Länge des Anlageschenkels 6 bis zur Stromschiene 9 sehr geringe Länge hat. Die Einbuchtung erstreckt sich dabei über eine Länge, die weniger als ein Viertel der gesamten Länge des Anlageschenkels 6 beträgt.It becomes clear that the contact legs 6 each have two opposite indentations 12 in a section above the busbar 9 and the free clamping end 4 in the rest state. In this way, a web 13 is created which has a width that is reduced in comparison to the adjoining sections of the contact leg 6. It is also clear that the web 13 and the indentations 12 have a very short length compared to the adjoining length of the contact leg 6 up to the busbar 9. The indentation extends over a length that is less than a quarter of the total length of the contact leg 6.

Durch die Einbuchtungen 12 und hiermit realisierten Stege 13 wird eine Art Scharnier zwischen dem sich an den Steg 13 anschließenden Federbogen 5 mit dem Klemmschenkel 3 und dem sich an den Steg 13 anschließenden restlichen Bereich des Anlageschenkels 6 bis zur Stromschiene 9 geschaffen. Eine bei Betätigung des Klemmschenkels 3 z.B. durch einen Betätigungshebel, einen Betätigungsschieber oder einen Schraubendreher ausgeübte Kraft und eine beim Anklemmen eines elektrischen Leiters auf den Anlageschenkel 6 übertragene Kraft wird durch den Steg 13 durch leichte Verformung (Verbiegen) des Steges 13 unter Reduzierung der auf ein angrenzendes Isolierstoffgehäuse ausgeübten Kraft aufgefangen und zur Stromschiene 9 hin abgeleitet. Mit Hilfe der Einbuchtung 12 wird somit ein an den Federbogen 5 angrenzender flexibler Abschnitt des Anlageschenkels 6 geschaffen, mit dem der Krafteinfluss auf ein Isolierstoffgehäuse verringert werden kann.The indentations 12 and webs 13 implemented with them create a type of hinge between the spring arch 5 adjoining the web 13 with the clamping leg 3 and the remaining area of the contact leg 6 up to the busbar 9 adjoining the web 13. A force exerted upon actuation of the clamping leg 3, for example by an actuating lever, an actuating slide or a screwdriver, and a force transmitted to the contact leg 6 when an electrical conductor is clamped, is reduced by the web 13 by slight deformation (bending) of the web 13, reducing the to a force exerted in the adjacent insulating material housing and diverted to the busbar 9. With the aid of the indentation 12, a flexible section of the contact leg 6 adjoining the spring bow 5 is created with which the force can be exerted can be reduced to an insulating housing.

Zur weiteren Stabilisierung des Isolierstoffgehäuses ist dabei zusätzlich denkbar, dass Abschnitte des Isolierstoffgehäuses in die Einbuchtungen 12 eintauchen und somit dieser Raum der Einbuchtungen 12 zur Verstärkung des Isolierstoffgehäuses mitgenutzt wird.To further stabilize the insulating material housing, it is also conceivable that sections of the insulating material housing dip into the indentations 12 and thus this space of the indentations 12 is also used to reinforce the insulating material housing.

Figur 2 lässt eine perspektivische Ansicht der Klemmfedern 2 des Federkraftklemmanschlusses 1 aus Figur 1 erkennen. Hierbei wird deutlich, dass die U-förmig gebogenen Anlageschenkel 6 integral miteinander über einen gemeinsamen freien Endabschnitt 8 verbunden sind, der sich in Anreihrichtung A und quer zur Leitereinsteckrichtung L über die drei Klemmfedern 2 hinweg erstreckt. Weiterhin wird deutlich, dass der freie Endabschnitt 8 mindestens eine Lageröffnung 14 zur Aufnahme einer Lagernase der Stromschiene 9 hat. Auf diese Weise kann die Stromschiene 9 an dem freien Endabschnitt 8 aufgelagert und lagefixiert werden. Die Stromschiene 9 ist dabei nicht so fest wie mit dem freien Endabschnitt 8 verbunden, dass dies nicht eine Kippbewegung ausführen kann. Der Federkraftklemmanschluss 1 ist passt sich damit flexibel an den jeweils angeklemmten elektrischen Leiter an. Figure 2 omits a perspective view of the clamping springs 2 of the spring-loaded terminal connection 1 Figure 1 detect. It is clear here that the U-shaped bent contact legs 6 are integrally connected to one another via a common free end section 8, which extends in the rowing direction A and transversely to the conductor insertion direction L over the three clamping springs 2. It is also clear that the free end section 8 has at least one bearing opening 14 for receiving a bearing nose of the busbar 9. In this way, the busbar 9 can be supported on the free end section 8 and fixed in position. The busbar 9 is not so firmly connected as it is to the free end section 8 that it cannot perform a tilting movement. The spring-loaded terminal connection 1 is thus flexibly adapted to the respective clamped-on electrical conductor.

Figur 3 lässt eine Seitenansicht des Federkraftklemmanschlusses 1 aus Figur 1 erkennen. Hierbei wird deutlich, dass die Stromschiene 9 auf dem freien Endabschnitt 8 der Anlageschenkel 6 aufgelagert ist. Erkennbar ist auch, dass eine Klemmkante 10 des freien Klemmendes 4 des Klemmschenkels 3 in dem Ruhezustand auf der Stromschiene 9 aufliegt. Der durch die Einbuchtungen 12 gebildete Steg 13 liegt dabei in einer Blickrichtung quer zur Leitereinsteckrichtung L gesehen oberhalb der Stromschiene 9 und des freien Klemmendes 4. Mit Hilfe der Stege 12 wird ein flexibles Gelenk zwischen dem durch den Federbogen 5 und den Klemmschenkeln 3 gebildeten Abschnitt und dem zwischen der Stromschiene 9 und dem sich daran anschließenden Abschnitt des Anlageschenkels 6 geschaffen. Die Klemmkraft des freien Klemmendes 4 auf einen elektrischen Leiter wird dabei im Wesentlichen durch den Federbogen 5 aufgebracht. Das durch die Stege 13 gebildete flexible Gelenk führt dazu, dass weitere Verformungskräfte flexibel abgefangen werden und nicht im großen Umfang auf das Isolierstoffgehäuse übertragen werden. Figure 3 omits a side view of the spring-loaded terminal connection 1 Figure 1 detect. It becomes clear here that the busbar 9 is supported on the free end section 8 of the contact legs 6. It can also be seen that a clamping edge 10 of the free clamping end 4 of the clamping leg 3 rests on the busbar 9 in the idle state. The web 13 formed by the indentations 12 is seen in a direction transverse to the conductor insertion direction L above the busbar 9 and the free terminal end 4. With the help of the webs 12, a flexible joint between the section formed by the spring bow 5 and the clamping legs 3 and that between the busbar 9 and the adjoining section of the contact leg 6 created. The clamping force of the free clamping end 4 on an electrical conductor is applied essentially by the spring bow 5. The flexible joint formed by the webs 13 means that further deformation forces are flexibly absorbed and are not transferred to the insulating material housing to a large extent.

Figur 4 lässt eine perspektivische Ansicht auf den Federkraftklemmanschluss 1 aus Figur 1 von unten erkennen. Hierbei wird deutlich, dass der freie Endabschnitt 8 der Anlageschenkel 6 Lageröffnungen 14 hat, in die von der Unterseite der Stromschiene 9 vorstehende Lagernasen 15 hineinragen. Die Stromschiene 9 ist damit nicht derart fest mit dem freien Endabschnitt 8 verbunden, dass die Stromschiene 9 sich gegenüber dem freien Endabschnitt 8 nicht verkippen lässt. Sie ist allerdings in Anreihrichtung A und quer mit Hilfe der Lagernasen 15 und der Lageröffnung 14 lagefixiert. Im Unterschied zu einer Befestigung der Stromschiene 9 mit dem freien Endabschnitt 8 durch Vernieten, Verschweißen, Verschrauben oder ähnlichem ist eine Kippbewegung der Stromschiene 9 möglich, so dass sich die Lage der Stromschiene 9 an die Lage eines angeklemmten elektrischen Leiters hinreichend anpassen kann. Figure 4 leaves out a perspective view of the spring-loaded terminal connection 1 Figure 1 recognize from below. It becomes clear here that the free end section 8 of the contact legs 6 has bearing openings 14 into which bearing lugs 15 protruding from the underside of the busbar 9 protrude. The busbar 9 is therefore not so firmly connected to the free end section 8 that the busbar 9 cannot be tilted with respect to the free end section 8. However, it is fixed in position in the direction A and transversely with the aid of the bearing lugs 15 and the bearing opening 14. In contrast to an attachment of the busbar 9 to the free end section 8 by riveting, welding, screwing or the like, a tilting movement of the busbar 9 is possible so that the position of the busbar 9 can adequately adapt to the position of a clamped electrical conductor.

Figur 5 lässt eine Draufsicht auf den Federkraftklemmanschluss aus Figur 1 erkennen. Hierbei wird deutlich, dass durch die einander gegenüberliegenden Einbuchtungen 12 an den Randbereichen der Anlageschenkel 6 angrenzend im Übergang zum Federbogen 5 Stege 13 gebildet sind. Deutlich wird, dass die Einbuchtungen 12 und Stege 13 in der Draufsicht oberhalb der Stromschiene 9 und des freien Klemmendes 4 der Klemmfedern 2 in der Ruhelage angeordnet sind. Figure 5 omits a top view of the spring-loaded terminal connection Figure 1 detect. It is clear here that the opposing indentations 12 on the edge regions of the contact legs 6 adjoin the transition to the spring arch 5 form webs 13. It becomes clear that the indentations 12 and webs 13 are arranged in the plan view above the busbar 9 and the free clamping end 4 of the clamping springs 2 in the rest position.

Erkennbar ist auch, dass die Stege 13 eine geringere Breite haben, als die Breite des sich daran anschließenden Abschnitts des Anlageschenkels 6 sowie des Federbogens 5.It can also be seen that the webs 13 have a smaller width than the width of the adjoining section of the contact leg 6 and of the spring bow 5.

Auf der Stromschiene sind Einsenkungen erkennbar, die zu den nach unten vorstehenden Lagernasen 15 gehören. Diese Lagernasen 15 sind im Umformvorgang aus dem Material der Stromschiene 9 nach unten gepresst.Depressions can be seen on the busbar, which belong to the bearing lugs 15 protruding downwards. These bearing lugs 15 are pressed down from the material of the busbar 9 in the forming process.

Deutlich wird auch, dass die Stromschiene 9 eine schräg verlaufende Auflauframpe 16 in Leitereinführungsrichtung L gesehen vor dem freien Klemmende 4 der Klemmfeder 2 und der Kontaktkante 11 haben. Hierdurch wird das Einführen eines elektrischen Leiters zur Klemmstelle erleichtert.It is also clear that the busbar 9 has an inclined ramp 16 in front of the free clamping end 4 of the clamping spring 2 and the contact edge 11, as seen in the conductor insertion direction L. This facilitates the introduction of an electrical conductor to the terminal point.

Figur 6 lässt eine Ansicht auf den Federkraftklemmanschluss 1 aus Figur 1 von unten erkennen. Die von der Unterseite der Stromschiene 9 hervorragenden Lagernasen 15 tauchen dabei in die Lageröffnung 14 des freien Endabschnitts 8 der Anlageschenkel 6 ein. Figure 6 leaves out a view of the spring-loaded terminal connection 1 Figure 1 recognize from below. The bearing lugs 15 protruding from the underside of the busbar 9 plunge into the bearing opening 14 of the free end section 8 of the contact legs 6.

Figur 7 lässt eine zweite Ausführungsform eines Federkraftklemmanschlusses 1 in der perspektivischen Ansicht erkennen. Auch hier haben die Anlageschenkel 6 durch einander gegenüberliegende Einbuchtungen 12 in einem an den Federbogen 5 angrenzenden Bereich ausgebildete Stege 13. Insoweit kann auf das oben beschriebene erste Ausführungsbeispiel des Federkraftklemmanschlusses 1 verwiesen werden. Figure 7 shows a second embodiment of a spring-loaded terminal connection 1 in the perspective view. Here, too, the contact legs 6 have webs 13 formed by opposing indentations 12 in an area adjoining the spring arch 5. In this respect, reference can be made to the first exemplary embodiment of the spring-loaded terminal connection 1 described above.

Die Ausführungsformen unterscheiden sich einerseits in der Lagerung der Stromschiene 9 an den Anlageschenkeln 6 und andererseits in der Ausgestaltung des Klemmschenkels 3.The embodiments differ, on the one hand, in the mounting of the busbar 9 on the contact legs 6 and, on the other hand, in the design of the clamping leg 3.

Deutlich wird, dass von der Oberseite der Stromschiene 9 zur Unterseite innen eingeprägt und von der Ebene der Unterseite der Stromschiene 9 vorstehende Lagernasen 15 an der Stromschiene 9 ausgebildet sind. Weiterhin wird deutlich, dass die Stromschiene in Leitereinführungsrichtung L gesehen vor dem Anlagepunkt des freien Klemmendes 4 über die Erstreckungslänge der Stromschiene 9 eine U-förmige Biegung 17 hat. Die sich in Anreihrichtung A erstreckende Oberseite der U-förmigen Biegung 17 bildet eine Kontaktkante 11 für einen anzuklemmenden elektrischen Leiter. Zudem ist das freie Ende 18 des freien Endabschnitts 8 der Anlageschenkel 6 nach oben in Richtung Stromschiene 9 hin abgebogen, so dass die Stromschiene in Verbindung mit den in die Lageröffnungen 14 eintauchenden Lagernasen 15 lagefixiert ist.It is clear that embossed on the inside from the top of the busbar 9 to the bottom and that bearing lugs 15 protruding from the plane of the underside of the busbar 9 are formed on the busbar 9. It is also clear that the busbar, seen in the conductor insertion direction L, is in front of the contact point of the free terminal end 4 over the extension length the busbar 9 has a U-shaped bend 17. The upper side of the U-shaped bend 17, which extends in the direction of arrangement A, forms a contact edge 11 for an electrical conductor to be clamped. In addition, the free end 18 of the free end section 8 of the contact legs 6 is bent upwards in the direction of the busbar 9, so that the busbar is fixed in position in connection with the bearing lugs 15 that dip into the bearing openings 14.

Weiterhin ist erkennbar, dass an den Randbereichen des Klemmschenkels 3 Betätigungslaschen 19 hervorstehen. Die Betätigungslaschen 19 sind leicht nach oben in Richtung Anlageschenkel 6 hin gebogen und bilden ein Betätigungsauflager, an dem ein Betätigungselement, wie beispielsweise ein Schwenkhebel, eine Betätigungskraft zum Öffnen einer Klemmstelle durch Anheben des Klemmschenkels 3 in Richtung darüberliegendem Abschnitt des Anlageschenkels 6 aufbringen kann. Im Bereich der Betätigungslaschen 19 ist das freie Klemmende 4 gegenüber dem Klemmschenkel 3 in Richtung Stromschiene 9 hin abgebogen.It can also be seen that actuating tabs 19 protrude from the edge regions of the clamping leg 3. The actuating tabs 19 are bent slightly upwards in the direction of the contact limb 6 and form an actuation support on which an actuating element, such as a pivot lever, can apply an actuating force to open a clamping point by lifting the clamping limb 3 in the direction of the section of the contact limb 6 located above it. In the area of the actuating tabs 19, the free clamping end 4 is bent in relation to the clamping leg 3 in the direction of the busbar 9.

In dem dargestellten Ausführungsbeispiel sind an den beiden gegenüberliegenden Randbereichen des Klemmschenkels 3 zwei Betätigungslaschen 19 für eine Klemmfeder 2 vorhanden. Denkbar ist aber auch, dass nur eine Betätigungslasche 19 pro Klemmfeder 2 vorgesehen ist.In the exemplary embodiment shown, two actuating tabs 19 for a clamping spring 2 are provided on the two opposite edge regions of the clamping leg 3. However, it is also conceivable that only one actuating tab 19 is provided per clamping spring 2.

Figur 8 lässt eine Seitenansicht des Federkraftklemmanschlusses aus Figur 7 erkennen. Hierbei wird nochmals deutlich, dass die Stromschiene durch die U-förmige Biegung 17 in dem nach oben in Richtung Stromschiene 9 abgebogenen freien Ende des Anlageschenkels ruht und durch die dahinter liegenden Lagernasen 15, die in die Lageröffnungen 14 des Abschnitts der Anlageschenkel 6 eintauchen, zusätzlich lagefixiert werden. Figure 8 shows a side view of the spring-loaded terminal connection from FIG. It becomes clear once again that the busbar rests in the free end of the contact leg bent upwards in the direction of the busbar 9 through the U-shaped bend 17 and additionally with the bearing lugs 15 located behind it, which dip into the bearing openings 14 of the section of the contact leg 6 be fixed in position.

Figur 9 lässt eine perspektivische Ansicht der Klemmfeder 2 für den Federkraftklemmanschluss aus Figuren 7 und 8 erkennen. Deutlich wird, dass nunmehr die einzelnen nebeneinander angeordneten Klemmfedern 2 separat voneinander sind. Die Lageröffnungen 14 sind bei dieser Ausführungsform durch Einbuchtungen am Randbereich des Anlageschenkels 6 im freien Endabschnitt gebildet und damit nicht umfangsseitig vollumfänglich geschlossen. Deutlich wird auch, dass das freie Ende 18 des freien Endabschnitts 8 von der Ebene des freien Endabschnitts 8 nach oben in Richtung Steg 13 bzw. in Richtung des etwa darüberliegenden freien Klemmendes 4 des Klemmschenkels abgebogen ist. Erkennbar ist weiterhin, dass die Betätigungslaschen 19 beidseits an den Randbereichen des Klemmschenkels 3 durch Freischneiden oder Freistanzen des Klemmendes 4 und Herunterfalten des selben in Richtung freien Endabschnitts 8 gebildet sind. Figure 9 omits a perspective view of the clamping spring 2 for the spring-loaded terminal connection Figures 7 and 8 detect. It becomes clear that now the individual clamping springs 2 arranged next to one another are separate from one another. In this embodiment, the bearing openings 14 are formed by indentations in the edge region of the contact leg 6 in the free end section and are therefore not completely closed on the circumference. It is also clear that the free end 18 of the free end section 8 is bent upwards from the plane of the free end section 8 in the direction of the web 13 or in the direction of the free clamping end 4 of the clamping leg located approximately above it. It can also be seen that the actuating tabs 19 are formed on both sides at the edge regions of the clamping leg 3 by cutting or punching free the clamping end 4 and folding it down in the direction of the free end section 8.

Figur 10 lässt eine Draufsicht auf den Federkraftklemmanschluss 1 aus Figur 7 erkennen. Hierbei wird deutlich, dass die Betätigungslaschen 19 in der Draufsicht in dem Raum unterhalb der Stege 13 und der diese bildenden Einbuchtungen 12 liegen. Das freie Klemmende 4 des Klemmschenkels 3, die Betätigungslaschen 19 und die Einbuchtungen 12 zur Bildung der Stege 13 liegen somit in etwa in einer Flucht übereinander. Figure 10 omits a plan view of the spring-loaded terminal connection 1 Figure 7 detect. It is clear here that the actuating tabs 19 are in the top view in the space below the webs 13 and the indentations 12 forming them. The free clamping end 4 of the clamping leg 3, the actuating tabs 19 and the indentations 12 for forming the webs 13 are thus approximately one above the other in alignment.

Figur 11 lässt eine Ansicht des Federkraftklemmanschlusses 1 aus Figur 7 von unten auf die Stromschiene 9 erkennen. Hierbei wird deutlich, dass die vorstehenden Lagernasen 15 in die aus Einbuchtungen gebildeten Lageröffnungen 14 am freien Endabschnitt 8 der Anlageschenkel 6 eintauchen. Figure 11 omits a view of the spring-loaded terminal connection 1 Figure 7 Recognize the busbar 9 from below. It becomes clear here that the protruding bearing lugs 15 dip into the bearing openings 14 formed from indentations on the free end section 8 of the contact legs 6.

Figur 12 lässt eine perspektivische Ansicht einer Leiteranschlussklemme 20 erkennen. Die Leiteranschlussklemme 20 hat ein Isolierstoffgehäuse 21, in das einer der oben beschriebenen Federkraftklemmanschlüsse 1 mit drei nebeneinander angeordneten Klemmfedern 2 eingebaut ist (nicht sichtbar). Zur Betätigung der Federkraftklemmanschlüsse 1, d.h. zum Öffnen der hierdurch gebildeten Klemmstellen zum Anschließen eines elektrischen Leiters sind Betätigungshebel 22 schwenkbar in dem Isolierstoffgehäuse 21 aufgenommen. Weiterhin hat das Isolierstoffgehäuse frontseitig Leitereinführungsöffnungen 23 zum Einführen von elektrischen Leitern zu einer zugeordneten Klemmstelle einer Klemmfeder 2. Diese Leitereinführungsöffnungen 23 erstrecken sich in Leitereinführungsöffnung L in den Innenraum des Isolierstoffgehäuses 21 hinein. Figure 12 shows a perspective view of a conductor connection terminal 20. The conductor connection terminal 20 has an insulating material housing 21 into which one of the spring-loaded terminal connections 1 described above is installed with three clamping springs 2 arranged next to one another (not visible). To actuate the spring-loaded terminal connections 1, ie to open the terminal points formed in this way for connecting an electrical one Actuating levers 22 are accommodated pivotably in the insulating material housing 21. Furthermore, the insulating material housing has conductor insertion openings 23 on the front side for inserting electrical conductors to an associated terminal point of a clamping spring 2. These conductor insertion openings 23 extend into conductor insertion opening L into the interior of the insulating material housing 21.

Weiterhin ist erkennbar, dass oberhalb der mittleren Leitereinführungsöffnung 23 eine sich in Leitereinführungsrichtung L erstreckte Prüföffnung 24 vorhanden ist. Die Prüföffnung 24 ist stirnseitig und zum angrenzenden Federkraftklemmanschluss 1 in dem Innenraum hin geöffnet, so dass mit Hilfe eines eingeführten Prüfwerkzeuges festgestellt werden kann, ob an dem Federkraftklemmanschluss 1 ein Spannungspotential anliegt. Alternativ oder zusätzlich hierzu ist auch denkbar, dass im hinteren, den Leitereinführungsöffnungen 23 gegenüberliegenden Bereich an der Oberseite oder Rückseite eine Prüföffnung 24' vorhanden ist.It can also be seen that a test opening 24 extending in the conductor insertion direction L is present above the central conductor insertion opening 23. The test opening 24 is open at the front and towards the adjoining spring-force terminal connection 1 in the interior, so that with the aid of an inserted test tool it can be determined whether there is a voltage potential at the spring-force terminal connection 1. As an alternative or in addition to this, it is also conceivable for a test opening 24 'to be present in the rear area opposite the conductor entry openings 23 on the top or rear.

Figur 13 lässt eine Draufsicht der Leiteranschlussklemme 20 mit den Schnittlinien A-A und B-B erkennen. Der obere, in Figur 12 linke, Betätigungshebel ist in der Offenstellung und ist vom Isolierstoffgehäuses weg verschwenkt. Damit ist die Klemmstelle der zugeordneten Klemmfeder geöffnet. Die anderen beiden Betätigungshebel 22 sind in Schließstellung in Richtung des Isolierstoffgehäuses 21 heruntergeklappt, so dass die Klemmstelle geschlossen ist und die zugeordnete Klemmfeder über den freien Klemmabschnitt 4 eine Klemmkraft auf die darunterliegende Stromschiene und einen ggf. zwischenliegenden elektrischen Leiter (nicht dargestellt) ausübt. Figure 13 shows a top view of the conductor connection terminal 20 with the section lines AA and BB. The upper, in Figure 12 left, operating lever is in the open position and is pivoted away from the insulating housing. This opens the clamping point of the associated clamping spring. The other two actuating levers 22 are folded down in the closed position in the direction of the insulating material housing 21 so that the clamping point is closed and the associated clamping spring exerts a clamping force via the free clamping section 4 on the busbar underneath and any electrical conductor (not shown) lying therebetween.

Figur 14 lässt eine Seiten-Schnittansicht im Schnitt B-B durch die Leiteranschlussklemme 21 aus Figuren 12 und 13 erkennen. Hierbei wird deutlich, dass ein oben beschriebener Federkraftklemmanschluss 1 in den Innenraum des Isolierstoffgehäuses 21 eingebaut ist. Das Isolierstoffgehäuse 21 ist hierbei zweiteilig ausgeführt und hat ein Klemmgehäuseteil 25 und ein dieses rückseitig verschließende Deckelteil 26. Erkennbar ist, dass der schwenkbar im Isolierstoffgehäuse 21 gelagerte Betätigungshebel 22 im Innenraum zwischen der Stromschiene 9 und dem Steg 13 einen Schwenklagerzapfen 27 mit einem V-förmigen Ausschnitt 28 von etwa 80 bis 120° (in dem dargestellten Ausführungsbeispiel etwa 110°) hat. Mit dem V-förmigen Ausschnitt 28 wird eine Betätigungskontur 29 geschaffen, die auf eine zugeordnete Betätigungslasche 19 wirkt, um den Klemmschenkel 3 zum Öffnen der Klemmstelle in Richtung darüberliegendem Steg 13 zu verlagern. Figure 14 omits a side sectional view in section BB through the conductor connection terminal 21 Figures 12 and 13 detect. It becomes clear here that a spring-loaded terminal connection 1 described above is built into the interior of the insulating material housing 21. The insulated housing 21 is designed in two parts and has a clamping housing part 25 and a cover part 26 that closes this at the rear. It can be seen that the actuating lever 22, which is pivotably mounted in the insulating material housing 21, has a pivot bearing pin 27 with a V-shaped cutout 28 in the interior between the busbar 9 and the web 13 of about 80 to 120 ° (in the illustrated embodiment, about 110 °). With the V-shaped cutout 28, an actuating contour 29 is created which acts on an associated actuating tab 19 in order to displace the clamping leg 3 in the direction of the web 13 located above it in order to open the clamping point.

Figur 15 lässt eine Seiten-Schnittansicht der Leiteranschlussklemme 20 bei geschlossenem Betätigungshebel 22 im Schnitt A-A der Figur 13 erkennen. Hierbei wird deutlich, dass die Klemmstelle nunmehr geschlossen ist. Dies wird dadurch erreicht, dass der Schwenkzapfen 27 um etwa 90° gedreht ist. Dabei ist die Betätigungslasche 19 freigegeben und der Klemmschenkel 3 kann unter der durch den Federbogen 5 aufgebrachten Federkraft sich frei bewegen und eine Klemmkraft auf die Stromschiene und einen ggf. zwischen Stromschiene und freiem Klemmende 4 angeordneten elektrischen Leiter ausüben. Figure 15 shows a side sectional view of the conductor connection terminal 20 with the actuating lever 22 closed in section AA of Figure 13 detect. It becomes clear here that the clamping point is now closed. This is achieved in that the pivot pin 27 is rotated by approximately 90 °. The actuating tab 19 is released and the clamping leg 3 can move freely under the spring force applied by the spring bow 5 and exert a clamping force on the busbar and an electrical conductor possibly arranged between the busbar and the free clamping end 4.

Durch den Steg 13 wird eine Art Federgelenk oder Scharnier gebildet, so dass eine über den Klemmschenkel 3 und den Federbogen wirkende Kraft flexibel von der Klemmfeder 2 selbst aufgenommen wird, ohne wesentliche Kraft auf das Isolierstoffgehäuse zu übertragen.A type of spring joint or hinge is formed by the web 13, so that a force acting via the clamping leg 3 and the spring bow is flexibly absorbed by the clamping spring 2 itself without transferring significant force to the insulating material housing.

Im Vergleich zu Figur 15 wird aus Figur 14 deutlich, dass der obere Abschnitt des Anlageschenkels 6 im Bereich des Steges 13 in der Offenstellung nach oben verlagert ist. Dies wird durch den flexiblen Steg 13 erreicht, der durch seine reduzierte Breite elastischer als die angrenzenden Abschnitt des Anlageschenkel 6 ist.Compared to Figure 15 will be off Figure 14 It is clear that the upper section of the contact leg 6 is shifted upwards in the area of the web 13 in the open position. This is achieved by the flexible web 13 which, due to its reduced width, is more elastic than the adjacent section of the contact leg 6.

In dem dargestellten Schnitt A-A ist auch die vordere Prüföffnung 24 oberhalb der mittleren Leitereinführungsöffnung 23 sowie eine von oben zugängliche rückseitige Prüföffnung 24' erkennbar.In the illustrated section A-A, the front test opening 24 above the central conductor insertion opening 23 and a rear test opening 24 'accessible from above can also be seen.

Figur 16 lässt eine zweite Ausführungsform einer Leiteranschlussklemme 20 erkennen. Hierbei kann zunächst einmal auf die Beschreibung der ersten Ausführungsform verwiesen werden. Im Unterscheid zur ersten Ausführungsform ist keine vordere Prüföffnung, sondern nur eine rückseitige Prüföffnung 24' vorhanden. Auch die Betätigungshebel 22 und das dazwischen liegende Isolierstoffgehäuse 21 sind leicht unterschiedlich ausgeführt. Figure 16 shows a second embodiment of a conductor connection terminal 20. In this regard, reference can first of all be made to the description of the first embodiment. In contrast to the first embodiment, there is no front test opening, but only a rear test opening 24 '. The actuating lever 22 and the insulating housing 21 located between them are also designed to be slightly different.

Figur 17 lässt eine Draufsicht auf die zweite Ausführungsform der Leiteranschlussklemme 20 aus Figur 16 mit den Schnittlinien A-A und B-B erkennen. Figure 17 omits a top view of the second embodiment of the conductor connection terminal 20 Figure 16 recognize with the cutting lines AA and BB.

Figur 18 zeigt die Leiteranschlussklemme 20 aus Figuren 16 und 17 im Schnitt B-B des geöffneten Betätigungshebels 22 bei geöffneter Klemmstelle. Auch hier ist ein teilkreisförmiger Schwenkzapfen 27 auf der Höhe oberhalb der Stromschiene 9 und unterhalb des Stegs 13 angeordnet und im Isolierstoffgehäuse schwenkbar gelagert. Die Stromschiene 9 ist dabei mit einer U-förmigen Biegung 17 vergleichbar mit dem zweiten Ausführungsbeispiel eines Federkraftklemmanschlusses 1 gemäß Figuren 7 bis 11 ausgeführt. Die an dem Schwenkzapfen 27 ausgebildete Betätigungskontur 29 ist etwas anders als in der ersten Ausführungsform gemäß Figuren 14 und 15 ausgeführt, funktional aber vergleichbar. Im Wesentlichen kann daher auf die Ausführung zum ersten Ausführungsbeispiel verwiesen werden. Figure 18 shows the conductor connection terminal 20 Figures 16 and 17 in section BB of the open actuating lever 22 with the terminal point open. Here, too, a part-circular pivot pin 27 is arranged at the level above the busbar 9 and below the web 13 and is pivotably mounted in the insulating material housing. The busbar 9 with a U-shaped bend 17 is comparable to the second exemplary embodiment of a spring-loaded terminal connection 1 according to FIG Figures 7 to 11 executed. The actuating contour 29 formed on the pivot pin 27 is somewhat different than in the first embodiment shown in FIG Figures 14 and 15 executed, functionally but comparable. Essentially, reference can therefore be made to the description relating to the first exemplary embodiment.

Figur 19 lässt eine Seiten-Schnittansicht der Leiteranschlussklemme 20 aus Figuren 16 und 17 im Schnitt A-A beim geschlossenen Betätigungshebel 22 erkennen. Dabei ist die Klemmstelle geschlossen, indem das freie Klemmende 4 des Klemmschenkels 3 in Richtung Stromschiene 9 durch die Federkraft der Klemmfeder 5 heruntergedrückt wird. Ohne eingeführten elektrischen Leiter wie dargestellt ruht das freie Klemmende 4 dann auf der Stromschiene. Figure 19 omits a side sectional view of the conductor connection terminal 20 Figures 16 and 17 Recognize in section AA with the actuating lever 22 closed. The terminal point is closed by the free terminal end 4 of the clamping leg 3 is pressed down in the direction of the busbar 9 by the spring force of the clamping spring 5. Without an inserted electrical conductor as shown, the free terminal end 4 then rests on the busbar.

Claims (8)

  1. Spring-loaded terminal connection (1) comprising at least one clamping spring (2) bent in the form of a loop and comprising a busbar (9), wherein the clamping spring (2) has a resting limb (6), which rests against the busbar (9), a spring bend (5), which adjoins the resting limb (6), and a clamping limb (3), which adjoins the spring bend (5) and points with a free clamping end (4) in the direction of the busbar (9), wherein the resting limb (6) is bent back in the form of a U so as to form a conductor-receiving pocket (7) for receiving a free end, stripped of insulation, of an electrical conductor which can be connected to the spring-loaded terminal connection (1), characterized in that the resting limb (6) has a flexible joint, which is formed by at least one notch (12), in the section opposite the busbar (9), wherein the flexible joint is arranged between the spring bend (5) and the conductor-receiving pocket (7).
  2. Spring-loaded terminal connection (1) according to Claim 1, characterized in that a pair of mutually opposite notches (12) is provided on both sides of a resting limb (6), and the resting limb (6) has, in the region of the notches (12), a web (13) having a reduced width in comparison with those sections of the resting limb (6) which are directed towards the spring bend (5) and the busbar (9).
  3. Spring-loaded terminal connection (1) according to either of the preceding claims, characterized in that the busbar (9) is mounted on the resting limb (6) so as to be capable of performing a tipping movement.
  4. Spring-loaded terminal connection (1) according to one of the preceding claims, characterized in that the resting limb (6) has, at its free end section (8), bearing openings (14) or bearing depressions and bearing lugs (15) protruding beyond the busbar (9), wherein the bearing lugs (15) each dip into an assigned bearing opening (14) or bearing depression.
  5. Spring-loaded terminal connection (1) according to Claim 4, characterized in that bearing openings (14) at the free end section (8) of the resting limb (6) are in the form of notches in the peripheral regions of the free end section (8).
  6. Spring-loaded terminal connection (1) according to one of the preceding claims, characterized in that a plurality of clamping springs (2) are arranged in a row next to one another and spaced apart from one another and have a common busbar (9), which extends in the row arrangement direction (A) of the clamping springs (2).
  7. Spring-loaded terminal connection (1) according to Claim 6, characterized in that the plurality of clamping springs (2) have a common free end region (8) of the resting limbs (6), which free end region extends in the row arrangement direction (A) of the clamping springs (2), wherein the clamping springs (2) are formed integrally with the free end region (8).
  8. Conductor connection terminal (20) comprising an insulating housing (21), characterized by at least one spring-loaded terminal connection (1) according to one of the preceding claims in the insulating housing (21).
EP14704144.6A 2013-02-13 2014-02-12 Spring-loaded connection terminal and conductor connection terminal Active EP2956994B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP18205463.5A EP3460919B1 (en) 2013-02-13 2014-02-12 Cable connection clamp
PL14704144T PL2956994T3 (en) 2013-02-13 2014-02-12 Spring-loaded connection terminal and conductor connection terminal
EP21155507.3A EP3836306A1 (en) 2013-02-13 2014-02-12 Lead terminal clamp

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013101411.9A DE102013101411B4 (en) 2013-02-13 2013-02-13 Spring terminal connection and conductor terminal
PCT/EP2014/052720 WO2014124962A1 (en) 2013-02-13 2014-02-12 Spring-loaded connection terminal and conductor connection terminal

Related Child Applications (4)

Application Number Title Priority Date Filing Date
EP18205463.5A Division EP3460919B1 (en) 2013-02-13 2014-02-12 Cable connection clamp
EP18205463.5A Division-Into EP3460919B1 (en) 2013-02-13 2014-02-12 Cable connection clamp
EP21155507.3A Division-Into EP3836306A1 (en) 2013-02-13 2014-02-12 Lead terminal clamp
EP21155507.3A Division EP3836306A1 (en) 2013-02-13 2014-02-12 Lead terminal clamp

Publications (2)

Publication Number Publication Date
EP2956994A1 EP2956994A1 (en) 2015-12-23
EP2956994B1 true EP2956994B1 (en) 2021-04-07

Family

ID=50097688

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Application Number Title Priority Date Filing Date
EP21155507.3A Pending EP3836306A1 (en) 2013-02-13 2014-02-12 Lead terminal clamp
EP18205463.5A Active EP3460919B1 (en) 2013-02-13 2014-02-12 Cable connection clamp
EP14704144.6A Active EP2956994B1 (en) 2013-02-13 2014-02-12 Spring-loaded connection terminal and conductor connection terminal

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP21155507.3A Pending EP3836306A1 (en) 2013-02-13 2014-02-12 Lead terminal clamp
EP18205463.5A Active EP3460919B1 (en) 2013-02-13 2014-02-12 Cable connection clamp

Country Status (9)

Country Link
US (1) US9478874B2 (en)
EP (3) EP3836306A1 (en)
JP (1) JP6396334B2 (en)
KR (1) KR102149849B1 (en)
CN (2) CN109524802B (en)
DE (2) DE102013101411B4 (en)
PL (1) PL2956994T3 (en)
RU (1) RU2652780C2 (en)
WO (1) WO2014124962A1 (en)

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Also Published As

Publication number Publication date
KR102149849B1 (en) 2020-09-01
JP2016507148A (en) 2016-03-07
US9478874B2 (en) 2016-10-25
CN104995800B (en) 2018-12-25
EP3460919A1 (en) 2019-03-27
PL2956994T3 (en) 2021-10-25
RU2015138698A (en) 2017-03-20
DE202014011262U1 (en) 2018-11-21
CN104995800A (en) 2015-10-21
EP3460919B1 (en) 2019-11-27
EP3836306A1 (en) 2021-06-16
RU2652780C2 (en) 2018-05-08
KR20150119856A (en) 2015-10-26
DE102013101411A1 (en) 2014-08-14
US20150372401A1 (en) 2015-12-24
CN109524802A (en) 2019-03-26
CN109524802B (en) 2021-02-19
JP6396334B2 (en) 2018-09-26
EP2956994A1 (en) 2015-12-23
DE102013101411B4 (en) 2018-03-22
WO2014124962A1 (en) 2014-08-21

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