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DE9202445U1 - Screwless clamp - Google Patents

Screwless clamp

Info

Publication number
DE9202445U1
DE9202445U1 DE9202445U DE9202445U DE9202445U1 DE 9202445 U1 DE9202445 U1 DE 9202445U1 DE 9202445 U DE9202445 U DE 9202445U DE 9202445 U DE9202445 U DE 9202445U DE 9202445 U1 DE9202445 U1 DE 9202445U1
Authority
DE
Germany
Prior art keywords
clamping
contact
edge
tongues
tabs
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.)
Expired - Lifetime
Application number
DE9202445U
Other languages
German (de)
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.)
Electro-Terminal Innsbruck At GmbH
Original Assignee
Electro-Terminal Innsbruck At GmbH
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 Electro-Terminal Innsbruck At GmbH filed Critical Electro-Terminal Innsbruck At GmbH
Priority to DE9202445U priority Critical patent/DE9202445U1/en
Publication of DE9202445U1 publication Critical patent/DE9202445U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H01R4/4811Spring details
    • H01R4/4816Spring details the spring shape preventing insertion of the conductor end when the spring is unbiased
    • 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
    • H01R4/4852Means for improving the contact with the conductor, e.g. uneven wire-receiving surface

Landscapes

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

Description

Schraubenlose KlemmeScrewless clamp

Die Neuerung betrifft eine schraubenlose Klemme mit einem Klemmkörper und einer Klemmfeder, wobei der Klemmkörper zwei zueinander parallele Kontaktlaschen und die Klemmfeder zwei gegen die Kontaktlaschen drückende Zungen aufweist, an denen je eine Klemmkante vorgesehen ist.The innovation concerns a screwless terminal with a clamping body and a clamping spring, whereby the clamping body has two contact tabs that are parallel to one another and the clamping spring has two tongues that press against the contact tabs, each of which has a clamping edge.

Eine derartige Klemme ist beispielsweise der GB-A 2 095 925, der EP-A 339 172 oder den DE-U 87 10 331 und 19 06 79 zu entnehmen und dient zum Anschließen oder Verbinden starrer elektrischer Leiter, die unter Verdrängung der Federzungen in die Klemme eingeschoben und von der Klemmkante an die Kontaktlasche angepreßt werden. Zum Entfernen des Leiters sind die Federzungen über eine öffnung im Klemmkörper und dem Gehäuse von außen zugänglich, und können beispielsweise mittels eines Schraubendrehers niedergedrückt werden. Sollen flexible Leiter, insbesondere Litzen aus feinen Drähten angeschlossen werden, so sind diese zu wenig steif, um die Federzungen verdrängen zu können, sodaß für Litzen eine äußere Betätigung der Zungen notwendig ist. Damit sind jedoch nicht alle durch Litzen bedingte Probleme gelöst. Die verdrillten Litzendrähte werden natürlich von der Klemmkante flachgedrückt und teilweise entdrillt, wobei sie über die Breite der Federzunge aufgefächert werden und seitlich ausweichen. Dies verringert den Flächendruck, erhöht den übergangswiderstand und verschlechtert die elektrischen Eigenschaften. Eine Erhöhung der Federkraft bringt keine Verbesserung, da die einzelnen Drähte verstärkt ausweichen.Such a terminal can be found, for example, in GB-A 2 095 925, EP-A 339 172 or DE-U 87 10 331 and 19 06 79 and is used to connect or connect rigid electrical conductors, which are pushed into the terminal by displacing the spring tongues and are pressed against the contact tab by the clamping edge. To remove the conductor, the spring tongues are accessible from the outside via an opening in the clamp body and the housing and can be pressed down using a screwdriver, for example. If flexible conductors, particularly strands made of fine wires, are to be connected, they are not stiff enough to displace the spring tongues, so that external actuation of the tongues is necessary for strands. However, this does not solve all the problems caused by strands. The twisted stranded wires are of course pressed flat by the clamping edge and partially untwisted, whereby they are spread out over the width of the spring tongue and move out to the side. This reduces the surface pressure, increases the contact resistance and worsens the electrical properties. Increasing the spring force does not bring any improvement, as the individual wires move out more.

Die Neuerung hat es sich zur Aufgabe gestellt, eine Klemme der eingangs genannten Art so auszubilden, daßThe innovation has set itself the task of designing a clamp of the type mentioned above in such a way that

auch flexible Leiter, insbesondere Litzen einwandfrei geklemmt werden.Even flexible conductors, especially stranded wires, can be clamped perfectly.

Neuerungsgemäß wird dies dadurch gelöst, daß die Klemmkante zwiwschen zwei Randstreifen der Zunge angeordnet ist, und die Randstreifen über die Kontaktlasche vorstehen. According to the innovation, this is solved by arranging the clamping edge between two edge strips of the tongue, and the edge strips protrude over the contact tab.

Die sich flachdrückenden, seitlich ausweichenden flexiblen Leiter werden in ihrem Auffacherungsbestreben eingeschränkt, da sie durch die seitlichen, die Zungen verlängernden Randstreifen eingefaßt sind. Die Länge der Klemmkante braucht nur dem Durchmesser des größten einzusetzenden flexiblen Leiters entsprechen, sodaß sein Querschnitt von der annähernden Kreisform auf eine annähernde Rechteckform verändert wird. Die Federzunge kann durch den seitlichen Halt eine definierbare Flächenpressung erzielen, die einwandfreie elektrische Eigenschaften sicherstellt.The flexible conductors that flatten and move out to the side are limited in their tendency to fan out, as they are enclosed by the side edge strips that extend the tongues. The length of the clamping edge only needs to correspond to the diameter of the largest flexible conductor to be used, so that its cross-section is changed from an almost circular shape to an almost rectangular shape. The spring tongue can achieve a definable surface pressure through the lateral hold, which ensures perfect electrical properties.

Eine Ausführung sieht vor, daß die Enden der Randstreifen unter Ausbildung einer von der Kontaktlasche durchsetzten öffnung durch einen Quersteg verbunden sind. Diese Anordnung der Stützlaschen führt zu einem losen Halt der Klemmfeder, ohne den für das Einsetzen der Leiter notwendigen Bewegungsraum zu begrenzen.One design provides that the ends of the edge strips are connected by a crossbar, forming an opening through which the contact tab passes. This arrangement of the support tabs results in a loose hold of the clamping spring without limiting the movement space required for inserting the conductor.

Nachstehend wird nun die Neuerung an Hand der Figuren der beiliegenden Zeichnung näher beschrieben, ohne darauf beschränkt zu sein.The innovation is now described in more detail below using the figures in the attached drawing, without being limited to them.

Es zeigen:Show it:

Fig.l eine Längsseitenansicht einer neuerungsgemäßen Klemme mit einem eingesetzten flexiblen Leiter,Fig.l a longitudinal side view of a terminal according to the innovation with an inserted flexible conductor,

Fig. 2 die Längsseitenansicht mit einem eingesetzten starren Leiter,Fig. 2 the longitudinal side view with an inserted rigid conductor,

Fig. 3 eine Draufsicht auf die Klemme, und Fig. 4 die leitereinschubseitige Stirnansicht der Klemme.Fig. 3 is a top view of the terminal, and Fig. 4 is the front view of the terminal on the conductor insertion side.

Die schraubenlose Klemme weist einen im Querschnitt etwa U-förmigen, insbesondere in einem Isoliergehäuse anordenbaren Klemmkörper auf, von dessen Seitenwand 1 mehrere Laschen abstehen. So sind an der gegenüberliegenden Längsseite zwei zueinander parallele Kontaktlaschen 2 vorgesehen, von denen je eine Endlasche 3 einwärts abgebogen ist, und die einen leicht nach innen gewölbten Anlageabschnitt 4 für die zu klemmenden Leiter 13,14 aufweisen, deren Einschubtiefe durch die Endlaschen 3 begrenzt ist. An der Einschubseite der Leiter 13,14 sind an der Seitenwand 2 mittig eine Stützlasche 5 und symmetrisch dazu zwei weitere Stützlaschen 6 vorgesehen. Diese dienen der Führung bzw. Halterung einer Klemmfeder, die einen etwa U-förmig bzw. halbkreisförmig gebogenen Mittelabschnitt 7 und zwei davon sich schräg nach außen zu den Kontaktlaschen 2 erstreckende Zungen 8 aufweist. Die Zungen 8 sind am Ende mit einer öffnung 10 versehen, die vom Anlageabschnitt 4 der jeweiligen Kontaktlasche 2 durchsetzt wird. Die Öffnung 10 ist von zwei Randstreifen 11 und einem endseitigen Quersteg 12 begrenzt, an dem ein nicht gezeigtes Betätigungselement angreifen kann. Die vierte, innere Seite der Öffnung 10 begrenzt eine Klemmkante 9, die am Anlageabschnitt 4 innen anliegt.The screwless terminal has a clamping body that is approximately U-shaped in cross-section and can be arranged in particular in an insulating housing, from whose side wall 1 several tabs protrude. For example, on the opposite long side there are two contact tabs 2 that are parallel to one another, one end tab 3 of which is bent inwards and which have a slightly inwardly curved contact section 4 for the conductors 13, 14 to be clamped, the insertion depth of which is limited by the end tabs 3. On the insertion side of the conductors 13, 14 there is a support tab 5 in the middle of the side wall 2 and two further support tabs 6 symmetrically thereto. These serve to guide or hold a clamping spring that has an approximately U-shaped or semi-circularly bent middle section 7 and two tongues 8 that extend obliquely outwards towards the contact tabs 2. The tongues 8 are provided at the end with an opening 10 through which the contact section 4 of the respective contact tab 2 passes. The opening 10 is delimited by two edge strips 11 and a crossbar 12 at the end, to which an actuating element (not shown) can engage. The fourth, inner side of the opening 10 delimits a clamping edge 9, which rests on the inside of the contact section 4.

Fig. 1 zeigt die Klemme mit einem eingesetzten flexiblen Leiter 13. Um diesen einschieben zu können, wird die Zunge 8 mittels des beispielsweise in einem Isoliergehäuse der Klemme gelagerten Betätigungselementes nach innen gedrückt, worauf der Leiter 13 eingeschobenFig. 1 shows the terminal with a flexible conductor 13 inserted. In order to be able to insert this, the tongue 8 is pressed inwards by means of the actuating element, which is for example mounted in an insulating housing of the terminal, whereupon the conductor 13 is inserted.

werden kann. Die Klemmkante 9 preßt den Leiter 13 gegen den Anlageabschnitt 4, wobei das Auffächern und seitliche Ausweichen der feinen Litzendrähte durch die Randstreifen 11 verhindert wird. Wie aus Fig. 1 ersichtlich, verlagert sich durch die Öffnung der Klemme von außen die Klemmfeder etwas in Richtung des Leiters 13, wobei sich der Mittelabschnitt 7 von der mittleren Stützlasche 5 entfernt, und die Klemmfeder nur von den äußeren Stützlaschen 6 geführt wird, an denen die Zungen 8 anliegen.The clamping edge 9 presses the conductor 13 against the contact section 4, whereby the fanning out and lateral deflection of the fine stranded wires is prevented by the edge strips 11. As can be seen from Fig. 1, the clamping spring is displaced slightly in the direction of the conductor 13 by opening the clamp from the outside, whereby the middle section 7 moves away from the middle support tab 5 and the clamping spring is only guided by the outer support tabs 6, against which the tongues 8 rest.

Wird hingegen wie Fig. 2 zeigt, ein starrer Leiter 14 in die Klemme eingesetzt, so ist dieser in der Lage, die Zunge 8 zu verdrängen. Der Mittelabschnitt 7 stützt sich an der mittleren Stützlasche 5 ab, und verbleibt also an dieser anliegend, entfernt sich aber, da er zusammengedrückt wird, von den äußeren Stützlaschen 6.If, however, as shown in Fig. 2, a rigid conductor 14 is inserted into the terminal, it is able to displace the tongue 8. The middle section 7 rests on the middle support tab 5 and therefore remains in contact with it, but moves away from the outer support tabs 6 as it is pressed together.

Claims (3)

Schutzansprüche :Protection claims: 1. Schraubenlose Klemme mit einem Klemmkörper und einer Klemmfeder, wobei der Klemmkörper zwei zueinander parallele Kontaktlaschen und die Klemmfeder zwei gegen die Kontaktlaschen drückende Zungen aufweist, an denen je eine Klemmkante vorgesehen ist, dadurch gekennzeichnet, daß die Klemmkante (9) zwischen zwei Randstreifen (11) der Zunge (8) angeordnet ist, und die Randstreifen (11) über die Kontaktlasche (2) vorstehen.1. Screwless terminal with a clamping body and a clamping spring, the clamping body having two mutually parallel contact tabs and the clamping spring having two tongues pressing against the contact tabs, on each of which a clamping edge is provided, characterized in that the clamping edge (9) is arranged between two edge strips (11) of the tongue (8), and the edge strips (11) protrude beyond the contact tab (2). 2. Klemme nach Anspruch 1, dadurch gekennzeichnet, daß die Enden der Randstreifen (11) unter Ausbildung einer von der Kontaktlasche (2) durchsetzten Öffnung (10) durch einen Quersteg (12) verbunden sind.2. Terminal according to claim 1, characterized in that the ends of the edge strips (11) are connected by a crosspiece (12) to form an opening (10) through which the contact tab (2) passes. 3. Klemme nach Anspruch 1, dadurch gekennzeichnet, daß die Zungen (8) von einem etwa U-förmig gebogenen Mittelabschnitt (7) der Klemmfeder abstehen, der um eine mittlere innenliegende und zwei seitlich außenliegende Stützlaschen (5,6) des Klemmkörpers geführt ist.3. Clamp according to claim 1, characterized in that the tongues (8) protrude from an approximately U-shaped central section (7) of the clamping spring, which is guided around a central inner and two laterally outer support tabs (5, 6) of the clamping body.
DE9202445U 1992-02-26 1992-02-26 Screwless clamp Expired - Lifetime DE9202445U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE9202445U DE9202445U1 (en) 1992-02-26 1992-02-26 Screwless clamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE9202445U DE9202445U1 (en) 1992-02-26 1992-02-26 Screwless clamp

Publications (1)

Publication Number Publication Date
DE9202445U1 true DE9202445U1 (en) 1992-04-16

Family

ID=6876530

Family Applications (1)

Application Number Title Priority Date Filing Date
DE9202445U Expired - Lifetime DE9202445U1 (en) 1992-02-26 1992-02-26 Screwless clamp

Country Status (1)

Country Link
DE (1) DE9202445U1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1004008C2 (en) * 1996-09-11 1998-03-19 Capax B V Operating switch for motor controller e.g. of hand-operated appliance
DE10222514C1 (en) * 2002-05-22 2003-11-13 Geyer Ag Plug-in clamp for stripped electrical conductor has U-shaped contact spring fitted between opposing contact arms of contact piece
DE102006053352B3 (en) * 2006-11-10 2008-04-17 Phoenix Contact Gmbh & Co. Kg Insert, has two spring legs which are components of leg springs connected to each other by bent joint and stayed together at obtuse angle, where one spring leg is inactive and extends inside region of mounting units
DE102007006645A1 (en) * 2007-02-06 2008-08-07 Wieland Electric Gmbh Electrical plug connector, has spring element held in partial electrically conductive retainer frame to form spring clamping point for conductor together with frame, where plug contact or bush contact is connected with frame
DE202009001488U1 (en) * 2009-02-06 2010-06-24 Weidmüller Interface GmbH & Co. KG Terminal for connecting conductor ends
DE102011011080B4 (en) * 2011-02-11 2013-04-11 Wago Verwaltungsgesellschaft Mbh Spring clamp connection and conductor connection unit

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1004008C2 (en) * 1996-09-11 1998-03-19 Capax B V Operating switch for motor controller e.g. of hand-operated appliance
DE10222514C1 (en) * 2002-05-22 2003-11-13 Geyer Ag Plug-in clamp for stripped electrical conductor has U-shaped contact spring fitted between opposing contact arms of contact piece
DE102006053352B3 (en) * 2006-11-10 2008-04-17 Phoenix Contact Gmbh & Co. Kg Insert, has two spring legs which are components of leg springs connected to each other by bent joint and stayed together at obtuse angle, where one spring leg is inactive and extends inside region of mounting units
DE102007006645A1 (en) * 2007-02-06 2008-08-07 Wieland Electric Gmbh Electrical plug connector, has spring element held in partial electrically conductive retainer frame to form spring clamping point for conductor together with frame, where plug contact or bush contact is connected with frame
DE202009001488U1 (en) * 2009-02-06 2010-06-24 Weidmüller Interface GmbH & Co. KG Terminal for connecting conductor ends
DE102011011080B4 (en) * 2011-02-11 2013-04-11 Wago Verwaltungsgesellschaft Mbh Spring clamp connection and conductor connection unit
US8632355B2 (en) 2011-02-11 2014-01-21 WAGO Verwaltungsgesellscaft mbH Spring-loaded connection and conductor connection unit

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