EP2614556B1 - Dispositif de raccordement - Google Patents

Dispositif de raccordement Download PDF

Info

Publication number
EP2614556B1
EP2614556B1 EP11757818.7A EP11757818A EP2614556B1 EP 2614556 B1 EP2614556 B1 EP 2614556B1 EP 11757818 A EP11757818 A EP 11757818A EP 2614556 B1 EP2614556 B1 EP 2614556B1
Authority
EP
European Patent Office
Prior art keywords
spring
clamping
section
conductor
spring unit
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.)
Not-in-force
Application number
EP11757818.7A
Other languages
German (de)
English (en)
Other versions
EP2614556A1 (fr
Inventor
Constantin Classen
Stephan Fehling
Herbert Fricke
Walter Hanning
Michael Herrmann
Dietmar Horn
Paulo Russo
Karlo Stjepanovic
Siegfried Storm
Jürgen Ziemke
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 EP2614556A1 publication Critical patent/EP2614556A1/fr
Application granted granted Critical
Publication of EP2614556B1 publication Critical patent/EP2614556B1/fr
Not-in-force 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
    • H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
    • H01R4/48275—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end with an opening in the housing for insertion of a release tool

Definitions

  • the invention relates to a connection device according to the preamble of claim 1.
  • connection device as for example from the GB 2 298 973 A is known, is used for connection or a contact of an electrical conductor.
  • a stripped or bare electrical conductor is brought into a electrically conductive connection with a contact section.
  • the conductor end to be connected is inserted into the connection device.
  • the connecting device can be opened by an actuator for easy insertion of the conductor and also for pulling it out.
  • connection devices e.g. in automation areas
  • the object of the present invention is therefore to provide an improved connection device.
  • connection device with the features of claim 1.
  • connection device allows an increased contact force on an electrical conductor by a spring unit with at least two spring sections clamps the electrical conductor and at the same time increases the contact force by a compression spring.
  • a connection device comprises: a body having an inner space and an insertion opening for introducing the electrical conductor in an insertion direction into the inner space; a spring unit arranged in the interior for clamping and contacting the electrical conductor; and an actuating device for releasing the spring unit from a clamping position.
  • the spring unit has at least two spring sections, of which at least one is designed as a clamping spring.
  • clamping spring has a self-locking function, which effectively prevents withdrawal of the conductor from the connection device. Furthermore, a so-called tumbling of the conductor is resolved or largely reduced.
  • the clamping spring may be V-shaped, wherein a holding portion allows a simple fixing in the body, an associated arc section is provided a spring action and a clamping section attached thereto with clamping edge for clamping.
  • the clamping edge can also be adapted to a diameter of the conductor to be clamped or connected by appropriate rounding.
  • the contact force can also be increased if one of the at least two spring sections of the spring unit is a clamping spring with a clamping edge for clamping the electrical conductor and another of the at least two spring sections of the spring unit is a reinforcing spring for enhancing the action of the clamping spring.
  • the reinforcing spring may at least partially have the shape of the clamping spring and be arranged directly on it.
  • a spring unit with double V-shaped clamping spring is formed.
  • the spring unit is integrally formed, wherein it has a sigma shape and thereby results in a space-saving design.
  • a clamping spring and a compression spring are connected via a common holding section, which fixes them to the body.
  • the at least two spring sections can also be provided individually. As a result, a large variation of different spring forces is possible.
  • a side plate is arranged in the interior and forms with edges a spring receptacle for the spring unit.
  • one of the edges of the side plate can form a contact portion, against which the electrical conductor can be contacted in the clamping position.
  • an edge of the side plate can form a retaining wall for the spring unit.
  • the spring unit can be loosely or firmly attached to the retaining wall.
  • the holding sections can serve.
  • the actuating device may comprise a plunger with a pressure edge, which is arranged displaceably in the body.
  • the plunger can with the cooperate formed as a clamping spring spring portion of the spring unit.
  • the actuating device and the insertion opening for the conductor to be connected are arranged on the same side of the connecting device, wherein an insertion direction is substantially parallel to a longitudinal axis of the plunger.
  • a baying terminal has at least one connection device described above.
  • FIG. 1 is a schematic perspective side view of a first embodiment of a connecting device 1 according to the invention shown.
  • the connection device 1 here comprises a body 2, an actuating device 7, a spring unit 10 and at least one contact section 13.
  • the connecting device 1 is here shown in an unactuated position, which is also called clamping position, with no electrical conductor is connected. In an actuated position, a conductor can be inserted or removed in an insertion direction 6. In an unactuated position and an inserted conductor of the conductor is connected to the connecting device 1 in the clamping position, wherein an electrical connection between a contact portion of the connecting device 1 and the conductor is made. Rigid conductors can also be inserted directly without actuation.
  • the body 2 is a kind of flat cuboid with a height whose length is about twice as large as its width.
  • the height runs in the FIG. 1 in the insertion direction 6 from top to bottom, the width at right angles to it from left to slightly obliquely bottom right.
  • a depth of the body 2 extends from bottom left to top right and has a length which may be about one fifth of the width.
  • the body 2 is made of an insulating material, such as a suitable plastic, and is on a side 2a, in FIG. 1 the back, closed. At the front side, approximately the upper half is closed as an upper portion 2g having a side 2b, whereas the lower half is exposed and exposing an inner space 3 defined by a lower side 2f, the upper portion 2g and a respective end face 2c, 2d , The upper portion 2g has a top 2e.
  • the sides 2a and 2b are parallel to each other and the end faces 2c, 2d are perpendicular to the sides 2a and 2b.
  • the right end face 2c slightly protrudes at the top 2e, with a portion in the right end portion of the top 2e extending obliquely upward to the higher edge of the right end face 2c.
  • the lower edge of the right end face 2c is separated by an opening 9 over its entire width from the bottom 2f. Through this opening 9 in a shape as a slot, for example, a contact strip with contacts in the interior 3 may be connected.
  • the introduction opening 4 is cylindrical and communicates on its underside with the interior 3 via a passage 5, which is also cylindrical.
  • the insertion opening 4 and the passage 5 serve to receive a conductor 16 (see, for example FIG. 4 ), which in the interior 3 by the spring unit 10 in the connecting device 1 can be connected, which will be explained in more detail below.
  • an actuator 7 is provided, which in a receptacle 7a (see FIG. 5 ) receives a displaceable plunger, which at its upper end an actuating portion 8a and at its lower end, which projects into the inner space 3, a pressure edge 8b for cooperation with the spring unit 10.
  • the plunger 8 is arranged displaceably in the insertion direction 6 and opposite to this in the receptacle 7a. Its function will be described in detail below.
  • the actuator 7 is also accessible and operable in the direction of insertion 6.
  • the located in the interior 3 of the body 2 spring unit 10 is in the in FIG. 1 illustrated first embodiment of two springs or spring sections, namely an upper spring portion, an upper spring clip 11 and a lower spring portion, a compression spring arranged below 12.
  • This spring unit 10 is here made in one piece, wherein the two spring portions clamping spring 11 and compression spring 12 connected to each other are or merge into each other.
  • the spring unit 10 is referred to herein as a "sigma spring” with a “sigma shape”.
  • a width of the spring unit 10 extends perpendicular to the surface of the side 2a, being slightly smaller than the depth of the inner space 3.
  • Both springs 11 and 12 are connected via their holding portions 11a and 12a. These holding portions 11a and 12a extend in a certain section parallel to the right end face 2c.
  • the clamping spring 11 is V-shaped, wherein one leg of the holding portion 11a and another leg is a clamping portion 11c, which are both connected via an arc portion 11b. From the holding portion 11a, the semicircular arc portion 11b extends leftward counterclockwise in the inner space 3. The arc portion 11b then goes into the straight clamping portion directed downward at an angle of about 45 ° 11c, which ends in a clamping edge 11d.
  • the clamping edge 11d extends across the width of the spring unit 10.
  • the clamping edge 11d may also be arcuate.
  • the arranged on the holding portion 11 a and connected thereto holding portion 12 a of the compression spring goes down in an arc portion 12 b clockwise about the same radius continues upward in a clockwise direction in a sheet section 12 c in the interior 3 and approximately below the center of Clamping portion 11c of the clamping spring ends.
  • a contact section 13 with a clamping region 13a and an underlying pressure region 13b is arranged on the inner surface of the left end side 2d parallel thereto.
  • a retaining wall 14 is arranged parallel to this on the inner surface of the right end face 2c parallel to this.
  • a bottom 15a lies on the inner surface of the lower surface 2f parallel thereto.
  • the contact portion 13, retaining wall 14 and bottom 15 a are formed integrally with a side plate 15, wherein they are folded edges of this side plate 15.
  • the side plate 15 forms with these edges a kind of spring receptacle for the spring unit 10 and is located on the inner surface of the side 2a within the interior 3.
  • the side plate 15 surrounds together with these edges, the spring unit 10 on four sides.
  • the retaining wall 14 can be connected to the holding portions 11 a and 12 a (see also FIG. 5 ) be loose or firmly connected.
  • the holding sections 11a and 12a are supported on the retaining wall 14 on the end face 2c of the body 2. At the bottom 15a, the arc section 12b of the compression spring 12 is supported.
  • the printed sheet section 12c has a convex printing section 12d on its outer surface facing the contact section 13.
  • This pressure section 12d is here spaced apart from the pressure region 13b of the contact section 13, but can also rest against the pressure region 13b of the contact section 13 in this unactuated position of the connection device 1 shown.
  • the clamping edge 11d is in this shown unactuated position of the connection device 1 at a small distance to the clamping region 13a of the contact portion 13 or is applied to this.
  • FIG. 2 shows the first embodiment FIG. 1 before introducing a leader.
  • a tool 17, here a screwdriver is about to be inserted into the operating portion 8a of the plunger 8, to push it in the insertion direction 6 down into the upper portion 2b of the body 2.
  • the operating portion 8a may have a corresponding slot or the like for a corresponding tool.
  • FIG. 3 shows the first embodiment FIG. 2 when introducing a conductor 16.
  • the conductor 16 has an electrical conductor element 16a, which is freed from an insulation 16b of the conductor 16 over a certain length.
  • the conductor element 16a may be a rigid wire or a stranded wire.
  • the tool 17 is inserted in the insertion direction 6 in the operating portion 8a of the plunger 8 and has pushed by actuation of the plunger 8 in the interior 3 of the body 2.
  • the pressure edge 8b of the lower end of the plunger 8 cooperates with the surface of the arc portion 11b of the clamp spring 11 of the spring unit 10 so that the clamp portion 11c is bent downward against a spring force of the arc portion 11b and simultaneously on the surface of the press sheet portion 12c of the compression spring 12 rests and this against the spring force of the sheet section 12c and the sheet portion 12b of the compression spring 12 is compressed.
  • the distances of the clamping edge 11d of the clamping spring 11 and the pressure section 12d of the compression spring 12 are enlarged to the contact portion 13 so that insertion of the conductor 16 with the stripped conductor element 16a through the insertion opening 4 and the passage 5 in the interior 3 is made possible.
  • FIG. 4 An end position of the conductor 16 thus inserted into the terminal device 1 is shown in FIG FIG. 4 in a side view and in FIG. 5 shown in a sectional view.
  • the conductor 16 is inserted with its stripped conductor element 16a in the interior 3, abuts with a longitudinal side of the contact portion 13 and abuts with its end against the bottom 15a.
  • the tool 17 is removed, the downwardly pressed sheet portion 11b of the clamping spring 11 springs back and pushes the plunger 8 back up.
  • the conductor element 16a is pressed against the contact section 13 via the clamping edge 11d of the clamping spring 11 by its spring force or the spring force of the arc section 11b.
  • the clamping portion 11c of the clamping spring 11 is at an angle to the insertion direction 6, in which the longitudinal axis of the conductor element 16a extends.
  • This angle depends on the thickness, eg of the diameter, of the conductor element 16a and is in the range of approximately 40 ... 45 °. If, in this connected position of the conductor element 16a in the connection device 1, attempts are then made to pull the conductor element 16a out of the connection device 1 against the insertion direction 6, a function of the self-locking of the clamping spring 11 counteracts withdrawal and prevents this by the clamping edge 11d with the spring force of the clamping spring 11 acts on the conductor element 16a.
  • the curved portion 11 with its convex outer region abut against the pressure edge 8b of the plunger 8 and be held, wherein the plunger 8 on an inner surface of the upper portion 2b of the body 2 with a plunger projection 8d into abutment and on a further upward movement is prevented against the insertion direction 6.
  • a contact force between the inserted and connected conductor element 16a is enhanced by the pressure of the convex pressure portion 12d of the press sheet portion 12c of the compression spring 12.
  • the pressing portion 12d is pressed against the conductor member 16a in a substantially perpendicular direction to the insertion direction 6 by the spring force of the press sheet portion 12c, and presses this in addition to the clamp spring 11 against the press portion 13b of the contact portion 13, with the press portion 13b below the clamp portion 13a.
  • the latter presses in a line-shaped or planar manner against the conductor element 16a.
  • the receptacle 7a of the actuating device 7 is shown, which is formed in the upper area in the body 2 wider than in the underlying area to the interior 3 with a stop 7b.
  • the stopper 7b forms a stop for a shoulder 8c of the plunger 8 displaceably arranged in the receptacle 7a in the insertion direction 6, in order to limit a movement in the insertion direction 6.
  • the plunger has the plunger projection 8d which limits movement of the plunger 8 against the insertion direction 6 by coming into abutment with a portion of the inner surface of the upper portion 2d, which is shown here.
  • This section is here an edge of opening 7a opening into the interior 3.
  • the holding portions 11a and 12a of the spring unit 10 have a recess 19, in which a nose 14a of the retaining wall 14 engages.
  • the spring unit 10 is fixed.
  • Recess 19 and nose 14a can form a positive connection.
  • the spring unit 10 is fixedly connected to the retaining wall 14 at one or more points, for example by riveting.
  • FIG. 6 illustrates a second embodiment of the connecting device 1 according to the invention in a sectional view with a connected conductor 16.
  • the spring unit 10 of two individual springs namely the clamping spring 11 and the compression spring 12 is constructed.
  • the clamping spring 11 is arranged with its holding portion 11a on the holding portion 12a of the compression spring 12, wherein between the holding portions 11a and 12a, a separation region 20 is located.
  • the holding portions 11a and 12a are respectively attached to the holding wall 14 as described above.
  • the arc portion 11b of the clamping spring 11 is arranged in this second embodiment with its convex, overhead outer side of a correspondingly shaped contact portion 3a of the inner surface of the upper portion 2b in the interior 3 fitting.
  • a third embodiment shows FIG. 7 in a schematic perspective side view of the connecting device 1 according to the invention.
  • the spring unit 10 consists of the V-shaped clamping spring 11 and a reinforcing spring 18, which is also V-shaped, and below the clamping spring 11 is arranged directly adjacent to this.
  • the holding portion 11a of the clamping spring 11 extends along the entire length of the retaining wall 14 in the insertion direction 6, wherein a holding portion 18a of the reinforcing spring 18 has approximately two thirds of the length of the retaining wall 14 and is disposed lying on the holding portion 11a of the clamping spring 11.
  • the holding portion 18a of the reinforcing spring 18 is further in the interior 3 as the holding portion 11a of the clamping spring 11.
  • An arc portion 18b of the reinforcing spring 18 nestles from the interior 3 down to the arc portion 11b of the clamping spring 11 and continues on the underside of the clamping spring eleventh lying with a pressure section 18 c, which ends approximately in the last quarter of the clamping portion 11 c of the clamping spring 11.
  • the reinforcing spring 18 has a particularly reinforcing effect with larger wire diameters of a conductor element 16a, for which purpose the length of the pressure section 18c of the reinforcing spring 18 can be adapted to different diameters of conductor elements 16a.
  • FIG. 8 shows the third embodiment similar FIG. 3 at the introduction of the conductor 16 in a schematic perspective view.
  • the arc portion 11b of the clamping spring 11 abuts against the abutment portion 3a of the upper portion 2b of the body 2 as in the second embodiment.
  • the actuating device 7 is also actuated as already described above and acts on the spring unit 10 by means of the plunger 8, that the conductor element 16 a between the clamping edge 11 d of the clamping spring 11 and the clamping portion 13 a of the contact portion 13 can be inserted through the insertion opening 4 and the passage 5 in the interior 3.
  • the conductor element 16a is connected in the connecting device 1, such as FIGS. 9 and 10 similar to FIG. 4 and 5 in a side view and in a sectional view. Except for the compression spring 12, the description applies to FIG. 4 and 5 also for FIGS. 9 and 10 and should not be repeated here.
  • the holding portions 11a and 18a of the spring unit 10 are each provided with a recess 15 which cooperates with a nose 14a of the retaining wall 14.
  • the spring unit 10 may consist of a clamping spring 11, a compression spring 12 and a reinforcing spring 18.
  • connection devices 1 can be designed as a series terminal.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Claims (6)

  1. Dispositif de raccordement (1) pour conducteurs électriques (16), comprenant
    - un corps (2) avec un espace intérieur (3) et une ouverture d'introduction (4) pour introduire le conducteur électrique (16) dans l'espace intérieur (3) dans une direction d'introduction (6) ;
    - une unité de ressort (10) disposée dans l'espace intérieur (3) pour serrer et contacter le conducteur électrique (16) ;
    - un dispositif d'actionnement (7) pour libérer l'unité de ressort (10) d'une position de serrage ;
    - dans lequel le dispositif d'actionnement (7) comprend un poussoir (8) avec un bord de pression (8b) qui est disposé coulissant dans le corps (2) ;
    - dans lequel l'unité de ressort (10) présente au moins deux parties de ressort dont au moins une est conçue comme ressort de serrage (11) ;
    - dans lequel l'une desdites au moins deux parties de ressort de l'unité de ressort (10) est un ressort de serrage (11) avec un bord de serrage (11d) pour serrer le conducteur (16) et l'autre desdites au moins deux parties de ressort de l'unité de ressort (10) est un ressort de pression (12) avec une partie de pression (12d) pour agir sur le conducteur (16) ;
    - dans lequel le poussoir (8) du dispositif d'actionnement (7) coopère avec la partie de ressort de l'unité de ressort (10) conçue comme ressort de serrage (11) ;
    caractérisé en ce que
    - l'unité de ressort (10) présente une forme de sigma, de sorte que l'unité de ressort (10) est réalisée d'une seule pièce, les deux parties de ressort formant ressort de serrage (11) et ressort de pression (12) étant reliées entre elles ou se prolongeant l'une l'autre ; et
    - dans lequel le bord de pression (8b) d'une extrémité inférieure du poussoir (8) coopère avec une surface d'une partie coudée (11b) du ressort de serrage (11) de l'unité de ressort (10) de telle sorte qu'une partie de serrage (11c) est pliée vers le bas contre une force élastique de la partie coudée (11b) et repose en même temps sur une partie coudée de pression (12c) du ressort de pression (12) et comprime celle-ci contre la force élastique de la partie coudée de pression (12c) et de la partie coudée (12b) du ressort de pression (12).
  2. Dispositif de raccordement (1) selon la revendication 1, caractérisé en ce qu'une plaque latérale (15) est disposée dans l'espace intérieur (3) et forme avec des bords (13, 14, 15a) un logement de ressort pour l'unité de ressort (10).
  3. Dispositif de raccordement (1) selon la revendication 2, caractérisé en ce que l'un des bords (13, 14, 15a) de la plaque latérale (15) forme une partie de contact (13) contre laquelle le conducteur électrique (16) peut être mis en contact dans la position de serrage.
  4. Dispositif de raccordement (1) selon la revendication 2 ou 3, caractérisé en ce que lesdites au moins deux parties de ressort de l'unité de ressort (10) sont fixées ensemble ou séparément à une paroi de retenue (14) qui est un des bords (13, 14, 15a) de la plaque latérale (15).
  5. Dispositif de raccordement (1) selon l'une des revendications précédentes, caractérisé en ce que le dispositif d'actionnement (7) et l'ouverture d'introduction (4) pour le conducteur électrique (16) sont disposés du même côté du dispositif de raccordement (1), le dispositif d'actionnement (7) pouvant être actionné dans la direction d'introduction (6) .
  6. Barrette à bornes dotée d'au moins un dispositif de raccordement (1) selon l'une des revendications précédentes.
EP11757818.7A 2010-09-08 2011-09-07 Dispositif de raccordement Not-in-force EP2614556B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202010008485U DE202010008485U1 (de) 2010-09-08 2010-09-08 Anschlussvorrichtung
PCT/EP2011/065500 WO2012032097A1 (fr) 2010-09-08 2011-09-07 Dispositif de raccordement

Publications (2)

Publication Number Publication Date
EP2614556A1 EP2614556A1 (fr) 2013-07-17
EP2614556B1 true EP2614556B1 (fr) 2019-01-09

Family

ID=44653295

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11757818.7A Not-in-force EP2614556B1 (fr) 2010-09-08 2011-09-07 Dispositif de raccordement

Country Status (3)

Country Link
EP (1) EP2614556B1 (fr)
DE (1) DE202010008485U1 (fr)
WO (1) WO2012032097A1 (fr)

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DE102013104394B4 (de) 2013-04-30 2021-06-10 Wago Verwaltungsgesellschaft Mbh Leiteranschlussklemme
DE102014002054A1 (de) * 2014-02-18 2015-09-03 Wieland Electric Gmbh Leiteranschluss für einen Steckverbinder
DE202014101915U1 (de) * 2014-04-23 2015-07-24 Wago Verwaltungsgesellschaft Mbh Leiteranschlussklemme
DE102016111536A1 (de) * 2016-06-23 2017-12-28 Wago Verwaltungsgesellschaft Mbh Kontakteinsatz einer Federkraftanschlussklemme sowie damit ausgebildete Federkraftanschlussklemme
GB2575317B (en) * 2018-07-06 2022-06-08 Johnson Electric Int Ag Actuator
DE202018106242U1 (de) 2018-11-01 2020-02-14 Wago Verwaltungsgesellschaft Mbh Leiteranschlussklemme

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FR2566967B1 (fr) * 1984-06-28 1989-04-07 Pouyet Henri Borne pour connexion de conducteur electrique par ressort de pressage
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Also Published As

Publication number Publication date
WO2012032097A1 (fr) 2012-03-15
DE202010008485U1 (de) 2011-12-13
EP2614556A1 (fr) 2013-07-17

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