EP2987205B1 - Élément de serrage à force élastique doté d'un levier pivotant - Google Patents

Élément de serrage à force élastique doté d'un levier pivotant Download PDF

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Publication number
EP2987205B1
EP2987205B1 EP14716868.6A EP14716868A EP2987205B1 EP 2987205 B1 EP2987205 B1 EP 2987205B1 EP 14716868 A EP14716868 A EP 14716868A EP 2987205 B1 EP2987205 B1 EP 2987205B1
Authority
EP
European Patent Office
Prior art keywords
spring
clamping
clamping element
force
leg
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
EP14716868.6A
Other languages
German (de)
English (en)
Other versions
EP2987205A1 (fr
Inventor
Stefan Aporius
Constantin Classen
Dirk Hanke
Sascha Nolte
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.)
Weidmueller Interface GmbH and Co KG
Original Assignee
Weidmueller Interface GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Weidmueller Interface GmbH and Co KG filed Critical Weidmueller Interface GmbH and Co KG
Publication of EP2987205A1 publication Critical patent/EP2987205A1/fr
Application granted granted Critical
Publication of EP2987205B1 publication Critical patent/EP2987205B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4828—Spring-activating arrangements mounted on or integrally formed with the spring housing
    • H01R4/48365—Spring-activating arrangements mounted on or integrally formed with the spring housing with integral release means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/633—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for disengagement only

Definitions

  • the present invention relates to a spring-force clamping element which has a pivot lever for opening a clamping point, so that an electrical conductor can easily be plugged into and / or detached from the spring-force clamping element, according to the preamble of claim 1.
  • Spring-force clamping elements have clamping springs which are provided for clamping the electrical conductor inserted in the spring clamp.
  • the electrical conductors are, for example, solid wire conductors, stranded conductors or sleeves in which stranded conductors are clamped in order to protect the strands from damage.
  • the wires of the conductors are mostly made of a copper-containing metal or copper and are soft compared to the spring steel used for clamping springs.
  • Spring force elements according to the preamble of claim 1 disclose the US 2002/074218 A1 and the US 2010/167573 A1 .
  • the pamphlet US 8,262,422 B1 discloses a spring-loaded clamping element in which an electrical conductor is clamped at a clamping point in a spring housing between a busbar and a spring leg.
  • the spring leg can be pivoted about an axis.
  • the spring leg has an extension, on the outer edge of which a web is provided which engages in a groove of a lever pivotable about the same axis.
  • the extension of the spring leg requires a relatively wide spring and thus a large overall depth. Very precise guidance of the lever is required so that the web does not slip out of the groove. And due to the introduction of force on the outer edge of the extension, there is a risk that the spring will move when it is actuated of the lever bends towards the outer edge and the actuating force acts unevenly on the spring.
  • the object of the invention is to create an alternative spring force clamping element that ensures that an electrical conductor is clamped well and that the clamping point can be opened easily.
  • a spring force clamping element is created for this, which has a spring housing which has an insertion area for inserting an electrical conductor, a busbar and a clamping spring being arranged in the spring housing, so that an electrical conductor inserted through the insertion area into the spring housing at a clamping point between the The clamping spring and the busbar can be clamped, the spring-force clamping element also having a pivoting lever which can be pivoted about a pivot axis to open the clamping point in a pivoting direction, and which has a contact geometry that presses the clamping spring in the pivoting direction when the clamping point is opened.
  • Such a spring force clamping element is preferably used as a circuit board terminal.
  • the contact geometry is arranged between an insertion area of the spring housing and the clamping spring.
  • the contact geometry is arranged in the interior of the spring housing.
  • the clamping spring therefore does not have to be made wider than is necessary for the conductor diameter of the electrical conductor that can be clamped in the spring-force clamping element.
  • the overall depth of the spring-loaded clamping element can be adapted to the conductor diameter.
  • a guide contour is provided on the pivot lever which, in an assembled state of the spring-force clamping element is arranged between the clamping leg and a support leg of the clamping spring.
  • the guide contour is therefore arranged in the interior of the spring housing and does not increase the overall depth.
  • a guide groove for the clamping spring is formed between the contact geometry and the guide contour.
  • the insertion area is preferably funnel-shaped or cylindrical.
  • the contact geometry is preferably designed as a contact surface.
  • other shapes of the insertion area and / or the contact geometry are also preferred.
  • the clamping spring has a clamping leg which is provided such that it can pivot about the pivot axis.
  • it also has a support leg which is supported on the spring housing and / or on a clamping cage when the clamping leg is pivoted.
  • the clamping spring is particularly preferably designed as a leaf spring. It is very particularly preferably made from a spring steel.
  • the contact geometry lies at least partially flat on the clamping leg, at least when the clamping point is opened. In the area of the contact geometry, the force acting on the clamping leg is thus evenly distributed over it.
  • the pivot lever preferably has an axle side and an actuation side, the contact geometry being arranged between the axle side and the actuation side. It is advantageously approximately U-shaped so that it can be easily and compactly integrated into the construction.
  • the pivot lever is preferably mounted on its axle side.
  • it has a steering knuckle. He also preferably points to his Actuating side on an actuating leg. Alternatively, it is semicircular. As a result, actuation running approximately in a straight line over the actuation angle is possible.
  • the contact geometry is arranged between the axle side and the actuation side.
  • the pivot lever is preferably mounted on the steering knuckle so that it can rotate about the pivot axis. Furthermore, an actuating surface is preferably provided on the actuating leg. As a result, the lever path is designed to be as large as possible and the force required to actuate the clamping leg is low. It is preferred that the actuation surface is designed for tool-free actuation and / or for actuation with an actuating tool.
  • the clamping leg preferably has a first kink at the open end and a second kink in the area of the contact geometry. Due to the second bend, the clamping leg extends between the first bend and the second bend almost transversely to a jammed electrical conductor or a conductor insertion direction. This enables a lower overall height. As a result of the first kink, an angle between the clamping leg and the electrical conductor is also formed butt and the jammed electrical conductor cannot be pulled out of the spring-force clamping element and is securely clamped. In addition, the open end of the clamping leg points through the first bend in the conductor insertion direction. As a result, the electrical conductor can be inserted and clamped into the spring housing without damage.
  • the spring-force clamping element 1 has a spring housing 2 with an interior space 20 in which a clamping cage 3 is arranged.
  • the invention also includes spring-loaded clamping elements (not shown) that have no clamping cage 3 but only a separate busbar (not shown).
  • the clamping cage 3 is accessible through an insertion area 21 which is provided in the spring housing 2.
  • the spring housing 2 is preferably made of an electrically insulating material, preferably a plastic, and can be formed as part of a higher-level housing, for example a terminal block.
  • the terminal cage 3 is preferably made of a metal with good electrical conductivity, preferably made of a copper-containing metal or copper.
  • a retaining contour 26 for a clamping spring 4 is provided.
  • the clamping spring 4 is designed here as a leaf spring. It has a clamping leg 41 and a support leg 42, which by an approximately semicircular Cross legs 46 are connected to one another.
  • the clamping spring 4 is preferably made from a spring steel.
  • the clamping spring 4 is guided around the holding contour 26.
  • a web 60 is formed approximately in the center of the transverse limb 46, which extends concentrically around a pivot axis 6 and forms a pivot shaft.
  • the clamping leg 41 can be pivoted about the pivot axis 6.
  • web 60 and pivot shaft are used synonymously.
  • the preferably U-shaped terminal cage 3 has a busbar 33 which is arranged transversely to a rear wall 35 of the terminal cage 3. Opposite the busbar 33, a side wall 32 is formed transversely to the rear wall 35, on which a support web 321 is provided.
  • connection web 31 is also provided on the terminal cage 3, on which four connection pins 311 are provided here for connecting electrical conductors (not shown).
  • the connection pins 311 shown here are designed as solder pins. However, other connections are also possible, for example a contact spring or a contact tulip or differently designed connections that allow soldering, clamping, plugging or the like.
  • the arrangement of the connecting web 31, the connecting pin 311 or other connections can be selected depending on the available space.
  • the clamping cage 3 can be pushed into the interior 20 of the spring-force clamping element 1 above a transverse web 22 of the spring housing 2.
  • the connecting pins 311 are led outwards, so that the interior space 20 for the clamping spring 4 and an electrical conductor 7 inserted into the spring housing 2 (see Fig. Fig. 2 ) remains free.
  • the connection pins 311 are thereby accessible from the outside.
  • the electrical conductor 7 can be pushed into a conductor insertion direction 8 in this direction and between the clamping leg 41 and the busbar 33.
  • a mounting position M s. Fig. 2 , 3
  • it is pressed against the pivoting direction 61 against the busbar 33 by the clamping leg 41 at a clamping point 40, which is shown here by an arrow.
  • a sleeve is shown here as an example, into which a stranded conductor is usually inserted.
  • the spring force clamping element can also be used for a stranded conductor without a sleeve and for a solid wire conductor.
  • a pivot lever 5 is provided. With the pivot lever 5, not only the electrical conductor 7 can be detached from the spring-loaded clamping element 1. Instead, the pivot lever 5 is provided for opening the clamping point 40. It therefore also enables the clamping point 40 to be opened before an electrical conductor 7, in particular a fine-wire electrical conductor 7, is intended to be clamped in the spring-force clamping element 1. When the terminal point 40 is open, the introduction of the electrical conductor 7 into the terminal point 40 is very easy.
  • the pivot lever 5 has an axle side 560 and an actuation side 570, which are connected via a base leg 580 ( Figure 4a ).
  • the base leg of the pivot lever 5 is approximately U-shaped here.
  • Figures 4b and d illustrate that the U-shaped clamping cage 3 of the pivot levers are advantageously opposite one another in such a way that they form a kind of closed contour that includes an inserted conductor, the pivot lever 5 remaining or being pivotable.
  • the pivot lever 5 has a steering knuckle 56 on its axle side 560. At the end 58 of the steering knuckle 56, it is arranged on the pivot shaft 60 and rotatably mounted about the pivot axis 6. A through hole 51 is provided for this, which extends concentrically around the pivot axis 6 and which is rotatably arranged on the pivot shaft 60.
  • pivot levers 5 for example a semicircular or a V-shaped pivot lever 5, conceivable.
  • the pivot lever 5 on its actuation side 570 has an actuation leg 57 at the end opposite the stub axle 56.
  • an actuation surface 53 here an actuation handle 53
  • the terms actuation surface 53 and actuation handle are used synonymously below.
  • the pivot lever 5 can be actuated manually on the actuating handle 53.
  • a recess 54 for an actuating tool (not shown) is provided at the open end 59 of the actuating leg 57, so that the pivot lever 5 can also be actuated there with the actuating tool, for example a screwdriver.
  • a more compact actuating surface 53 is also preferred, which only allows actuation with an actuating tool.
  • the contact geometry 52 is flat and at least partially lies flat on the clamping leg 41 when the clamping point 40 is opened, that is, when the pivot lever 5 is pivoted in the pivoting direction 61. As a result, the force in the area of the contact geometry 52 is evenly distributed over the clamping leg 41. In addition, it does not break when the pivot lever is actuated.
  • the clamping leg 41 Due to the restoring force of the clamping spring 4, the clamping leg 41 is automatically pivoted back against the pivoting direction 61 when the electrical conductor 7 is removed from the spring force clamping element 1 and no actuating force acts on the pivot lever 5 any more.
  • the clamping leg 41 is at least partially in contact with the contact geometry 52 and presses against the pivoting direction 61 on the contact geometry 52, so that the pivot lever 5 is pivoted back with the clamping spring 4.
  • a guide contour 55 is also provided on the pivot lever 5, which is arranged between the clamping leg 41 and the support leg 42 in the assembled state of the spring-force clamping element 1.
  • the pivot lever 5 is arranged between the clamping leg 41 and the support leg 42 in the assembled state of the spring-force clamping element 1.
  • a lever guide 23 is provided on the spring cage 2.
  • the lever guide 23 prevents the pivot lever 5 from pivoting freely when the electrical conductor 7 is connected.
  • the clamping leg 41 has a first bend 43 and a second bend 45.
  • the first kink 43 is provided at an open end 44 of the clamping leg 41.
  • the second bend 45 is provided in the area of the contact geometry 52. Through the second bend 45, the clamping leg 41 extends between the first bend 43 and the second bend 45 almost transversely to the jammed electrical conductor 7 or the conductor insertion direction 8. The overall height is therefore low.
  • the first bend 43 creates an angle between the clamping leg 41 and the electrical conductor 7, which is securely clamped in the spring-force clamping element 1.
  • the direction of the overall depth 81, the overall width 82 and the overall height 83 are in the Figures 2 and 3 shown.
  • the Fig. 3 shows in (b) a side view of the spring-force clamping element and in (a), (c) and (d) each perspective views of the spring-force clamping element, one of the front from Fig. 2 opposite rear side of the spring-loaded clamping element Fig. 1 map, wherein a rear wall of a clamping cage of the spring force clamping element is not shown in (a), in (b) and (c) by dashed lines, and in (d).
  • Fig. 4 (a) and (c) show a basic position G of the clamping spring 4, in which no electrical conductor 7 is inserted into the spring housing 2. In this basic position, the clamping leg 41 extends approximately transversely to the conductor insertion direction 8.
  • the Fig. 4 (b) shows a mounting position M of the clamping spring 4, in which an electrical conductor 7 is inserted into the spring housing 2 and is clamped in this between the open end 44 of the clamping leg 41 and the busbar 33.
  • the electrically conductive end of the sleeve 7 is denoted here by the reference numeral 71.
  • FIG. 4 (d) an open position O of the clamping spring 4 is shown, in which the clamping leg 41 and the pivot lever 5 are pivoted as far as possible in the pivoting direction 61.
  • This open position O is only possible if the actuating force acts on the pivot lever 5 in the conductor insertion direction 8.
  • the actuation force is shown here by an arrow 9.
  • latching means (not shown) in the spring-force clamping element 1, so that the pivot lever 5 latches in the open position O.

Landscapes

  • Clamps And Clips (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Claims (8)

  1. Élément de serrage à force élastique (1) comprenant un boîtier de ressort (2) qui présente une zone d'insertion (21) pour l'insertion d'un conducteur électrique (7) et dans lequel sont disposés une barre collectrice (33) ainsi qu'un ressort de serrage (4), de telle sorte qu'un conducteur électrique (7) inséré dans le boîtier de ressort (2) peut être serré à un point de serrage (40) entre le ressort de serrage (4) et la barre collectrice (33), dans lequel l'élément de serrage à force élastique (1) présente un levier pivotant (5) qui peut pivoter autour d'un axe de pivotement (6) dans une direction de pivotement (61) pour ouvrir le point de serrage (40), et qui présente une géométrie de contact (52) qui presse le ressort de serrage (4) dans la direction de pivotement (61) lors de l'ouverture du point de serrage (40), et dans lequel le levier pivotant (5) présente un côté axe (560) et un côté actionnement (570), et dans lequel la géométrie de contact (52) est disposée entre le côté axe (560) et le côté actionnement (570),
    caractérisé en ce que
    - la géométrie de contact (52) est disposée entre une zone d'insertion (21) du boîtier de ressort (2) et le ressort de serrage (4) ; et
    - un contour de guidage (55), qui est disposé entre la branche de serrage (41) et une branche d'appui (42) du ressort de serrage (4) dans un état monté de l'élément de serrage à force élastique (1), est prévu sur le levier pivotant (5).
  2. Élément de serrage à force élastique (1) selon la revendication 1, caractérisé en ce que la géométrie de contact (52) est en contact au moins partiellement plan avec la branche de serrage (41) et presse cette dernière dans la direction de pivotement (61) lors de la libération.
  3. Élément de serrage à force élastique (1) selon l'une des revendications précédentes, caractérisé en ce que le ressort de serrage (4) présente une branche de serrage (41) qui est prévue pivotante autour de l'axe de pivotement (6).
  4. Élément de serrage à force élastique (1) selon l'une des revendications précédentes, caractérisé en ce que le levier pivotant (5) présente sur son côté axe (560) une branche d'axe (56) sur laquelle il est monté rotatif autour de l'axe de pivotement (6).
  5. Élément de serrage à force élastique (1) selon l'une des revendications précédentes, caractérisé en ce que le levier pivotant (5) présente sur son côté actionnement (570) une branche d'actionnement (57) sur laquelle une surface d'actionnement (53) est prévue.
  6. Élément de serrage à force élastique (1) selon l'une des revendications précédentes, caractérisé en ce que la surface d'actionnement (53) est prévue aussi bien pour un actionnement sans outil que pour un actionnement avec un outil d'actionnement.
  7. Élément de serrage à force élastique (1) selon l'une des revendications précédentes, caractérisé en ce que la géométrie de contact (52) est disposée à l'intérieur (20) du boîtier de ressort (2).
  8. Élément de serrage à force élastique (1) selon l'une des revendications précédentes, caractérisé en ce que la cage de serrage en forme de U (3) et le levier pivotant forment ensemble une sorte de contour fermé qui entoure un conducteur inséré (7).
EP14716868.6A 2013-04-15 2014-04-14 Élément de serrage à force élastique doté d'un levier pivotant Active EP2987205B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202013101582.2U DE202013101582U1 (de) 2013-04-15 2013-04-15 Federkraftklemmelement mit Schwenkhebel
PCT/EP2014/057531 WO2014170273A1 (fr) 2013-04-15 2014-04-14 Élément de serrage à force élastique doté d'un levier pivotant

Publications (2)

Publication Number Publication Date
EP2987205A1 EP2987205A1 (fr) 2016-02-24
EP2987205B1 true EP2987205B1 (fr) 2020-12-02

Family

ID=50478871

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14716868.6A Active EP2987205B1 (fr) 2013-04-15 2014-04-14 Élément de serrage à force élastique doté d'un levier pivotant

Country Status (6)

Country Link
US (1) US9680237B2 (fr)
EP (1) EP2987205B1 (fr)
JP (1) JP6440684B2 (fr)
CN (1) CN105122550B (fr)
DE (1) DE202013101582U1 (fr)
WO (1) WO2014170273A1 (fr)

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Also Published As

Publication number Publication date
DE202013101582U1 (de) 2014-07-16
EP2987205A1 (fr) 2016-02-24
US9680237B2 (en) 2017-06-13
JP6440684B2 (ja) 2018-12-19
JP2016519404A (ja) 2016-06-30
US20160049737A1 (en) 2016-02-18
WO2014170273A1 (fr) 2014-10-23
CN105122550A (zh) 2015-12-02
CN105122550B (zh) 2019-02-12

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