GB1603297A - Electrical terminal system - Google Patents

Electrical terminal system Download PDF

Info

Publication number
GB1603297A
GB1603297A GB2806/80A GB280680A GB1603297A GB 1603297 A GB1603297 A GB 1603297A GB 2806/80 A GB2806/80 A GB 2806/80A GB 280680 A GB280680 A GB 280680A GB 1603297 A GB1603297 A GB 1603297A
Authority
GB
United Kingdom
Prior art keywords
contact bridge
terminal device
electrical terminal
clamping spring
clamping
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
Application number
GB2806/80A
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 GmbH and Co KG
Original Assignee
Wago Kontakttechnik 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 Wago Kontakttechnik GmbH and Co KG filed Critical Wago Kontakttechnik GmbH and Co KG
Publication of GB1603297A publication Critical patent/GB1603297A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4811—Spring details
    • H01R4/4816—Spring details the spring shape preventing insertion of the conductor end when the spring is unbiased
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/484—Spring housing details
    • H01R4/4842—Spring housing details the spring housing being provided with a single opening for insertion of a spring-activating tool
    • 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
    • H01R4/4846—Busbar details
    • H01R4/485—Single busbar common to multiple springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting

Landscapes

  • Installation Of Bus-Bars (AREA)
  • Multi-Conductor Connections (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)

Description

(54) AN ELECTRICAL TERMINAL SYSTEM (71) We, WAGO-KONTAKTTECHNIK GmbH, a German corporate body, of Goebenstrasse 52, 4950 Minden, Westf, West Germany, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed to be particularly described by the following statement :- ELEGrRlCAL TERICAL DEVICE This invention relates to an electrical terminal device.
In accordance with this invention there is provided an electrical terminal device, comprising a clamping spring having an elongate portion at one end thereof fixed against longi- tudinal displacement to one side of a contact bridge, the clamping spring extending in the form of a closed loop and having a portion at the other end thereof extending across said one end to the opposite side of the contact bridge, said portion at said other end of the clamping spring being formed with an aperture to receive an electrical conductor and said portion at said one end projecting through said aperture, the clamping spring then serving to clamp the electrical conductor between an edge of said aperture and said opposite side of the contact bridge.
An embodiment of the invention will now be described, by way of example only, with reference to the accompanying drawings, in which : Figure 1 is a side elevation, partially in section, of a terminal device comprising a contact bridge and clamping springs secured thereto; Figure 2 is an enlarged side elevation of the contact bridge and clamping springs ; Figure 3 is a perspective view of a clamping spring ; Figure 4 is a perspective partial view of a contact bridge; and Figure 5 is a perspective view of a modified clamping spring.
In Figure 1, an electrical terminal device comprises a housing 10 of insulating material, open at one side, and is provided with resiliently flexible feet 11 which engage round a rail 12 on which a number of these terminal devices can be disposed side-by-side.
These resilient feet 11 may also serve for connection of the terminal device to another corresponding terminal device, situated below, these feet engaging behind corresponding projections 13 at the upper end of the adjacent terminal device.
A contact device constructed in the form of a self-supporting structural unit is pushed laterally, from the open side, into the interior of the housing 11 of insulating material. Its contact bridge 14 is made U-shaped in cross-section (see Figure 4), its lateral arms being provided with holes 15 in which pins 16 are injectionmoulded on the side wall of the housing 10 of insulating material and project into the interior to locate the contact bridge in the housing 10 of insulating material.
The web 14a between the two arms 14b of this contact bridge 14 is bent at the end to form a depression 14c which is stamped out in the form of a tab and open at the top and in which an angled end 18a of a clamping spring 18 engages. This clamping 18 is bent substantially in the form of a loop and closed on itself in such a manner that one elongate end portion 18b, having the angled end 18a, bears against the web 14a of the contact bridge 14, parallel thereto, and is secured against displacement in the longitudinal and transverse direction by a collar rivet 17 (through a hole 19 in the spring portion 18b). This collar rivet 17 is formed out of the web 14a of the contact bridge 14.
The end portion or arm 18b of the clamping spring 18 is at an acute angle to an end portion or arm 18c at the opposite end of the spring, which arm 18c forms an open angle with the contact bridge 14. For this purpose, the intermediate portion (the web) of the clamping spring 18 is bent twice and offers a long travel to the clamping spring 18 through a central portion 18d bent in the opposite direction. As a result of these lateral bends merging into the arms 18b and 18c and the opposite bend 18d, the clamping spring has a high clamping force so that the arm 18c, through a contact-bridge aperture 18e of which the angled end 18a of the other arm 18b projects and engages, presses an inserted conductor 20 with high tension against the under side of the contact bridge 14.
In the course of this, the depression 14c forms a linear contact surface at its under side so that a clamping edge 18f of the arm 18c under tension grips the conductor 20 passed through the aperture 18e particularly firmly at the under side of the contact bridge 14.
For this purpose, it may be preferred for the arm 18c underneath the contact bridge 14 to be equipped with a spring tongue 18g, the free clamping edge of which, when a conductor 20 is inserted, together with the bent-under surface of the depression 14c grips the conductor 20 in such a manner that there is a certain spacing, in the longitudinal direction of the contact bridge 14, between the depression 14c and the clamping edge of the spring tongue 18g. This construction is suitable not only for rigid conductors but also, in particular, for conductors of fine wire because the fine wires then bend sub stantially in the form of an S round the under surface of the depression 14c and the clamping edge of the spring tongue 18g. As a result, accidental pulling out of the conductor 20 is prevented in an advantageous manner because the clamping force between clamping spring and contact bridge is very high. Only after the clamping spring 18 has been pressed down in its bent central region is it possible for the clamping edge 18f of the spring tongue 18g to be removed downwards from the contact bridge so that only then can the conductor 20 be pulled out. For this purpose, an aperture 21 is provided in the insulating housing 10, through which a pressing device such as a screwdriver can be introduced in order to press the clamping spring downwards.
The depression 14c and the spring tongue 18g form a funnel which facilitates the guiding of the inserted conductor 20.
In Figures I and 2, two clamping springs 18 are secured in mirror image to the common bridge 14.
Instead of a rivet connection between contact bridge 14 and the arm 18b of the clamping spring, it is also possible to mould pressure members 22 on the housing which project into the interior of each clamping spring, press the arm 18b against the contact bridge 14 in each case and prevent the clamping spring 18 from being pressed down too low.
This contact bridge 14 may, for example, comprise two slots 23 through which one arm of each of two adjacent straight or U-shaped jumpers or bridges (not illustrated) can be inserted in order to connect adjacent terminal devices electrically to one another. These bridges are pushed through an opening 24 in the insulating housing and, because of their U-shape, hold two adjacent insulating housings 10 against one another or in a straight line one above the other.
The closed-loop construction of the clamping spring 18 with interengaging spring arms 18b and 18c has the advantage that these support one another independently without additional securing. As a result of the interengagement and the associated support of the clamping spring, the tilting moment occurring on actuation of the clamping spring is reduced.
The generally M-shape of the intermediate portion of the clamping spring 18 causes a greater reserve of spring clamping force as a result of a flat characteristic curve.
As a result of the provision of a depression, the conductor inserted in the terminal device has a predetermined contact point or contact line which does not alter even in the event of a possible tumbling movement of the conductor.
Also the specific contact pressure remains comparatively high and constant at this contact point.

Claims (12)

WHAT WE CLAIM IS:
1. An electrical terminal device, comprising a clamping spring having an elongate portion at one end thereof fixed against longitudinal displacement to one side of a contact bridge, the clamping spring extending in the form of a closed loop and having a portion at the other end thereof extending across said one end to the opposite side of the contact bridge, said portion at said other end of the clamping spring being formed with an aperture to receive an electrical conductor and said portion at said one end projecting through said aperture the clamping spring then serving to clamp the electrical conductor between an edge of said aperture and said opposite side of the contact bridge.
2. An electrical terminal device as claimed in Claim 1, in which the projecting-through end of said portion at said one end is angled towards the contact bridge.
3. An electrical terminal device as claimed in Claim 2, in which the contact bridge comprises a portion which projects through said aperture, which portion is formed so as to provide a depression which receives said angled portion of the clamping spring.
4. An electrical terminal device as claimed in any preceding Claim, in which said other end portion of the clamping spring is formed with a spring tongue forming said clamping edge of said aperture.
5. An electrical terminal device as claimed in Claim 4, in which the clamping edge of the spring tongue is directed, with lateral spacing therefrom, towards the depression of the contact bridge.
6. An electrical terminal device as claimed in any preceding Claim, in which the clamping spring is bent generally into the form of an M in its portion intermediate said end portions.
7. An electrical terminal device as claimed in any preceding Claim, in which the contact bridge is made U-shaped in cross-section.
8. An electrical terminal device as claimed in any preceding Claim, in which said one end portion of the clamping spring is fixed to the contact bridge by means of a rivet.
9. An electrical terminal device as claimed in any one of Claims 1 to 7, in which said one end portion of the clamping spring is fixed to the contact bridge by means of a pressure member projecting from a housing of insulating material in which the contact bridge is disposed.
10. An electrical terminal device as claimed in any preceding Claim, in which the contact bridge is located relative to a housing of insulating material, in which it is disposed, by means of a pin projecting from a side wall of this housing.
11. An electrical terminal device as claimed in any preceding Claim, in which the contact bridge is equipped with slots for the insertion of electrical jumpers.
12. An electrical terminal device substan tially as herein described with reference to Figures 1 to 4 or 5 of the accompanying drawings.
GB2806/80A 1977-02-16 1977-08-16 Electrical terminal system Expired GB1603297A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2706482A DE2706482C2 (en) 1977-02-16 1977-02-16 Screwless connection and / or connecting clamp

Publications (1)

Publication Number Publication Date
GB1603297A true GB1603297A (en) 1981-11-25

Family

ID=6001305

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2806/80A Expired GB1603297A (en) 1977-02-16 1977-08-16 Electrical terminal system

Country Status (2)

Country Link
DE (1) DE2706482C2 (en)
GB (1) GB1603297A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5095178A (en) * 1990-12-21 1992-03-10 Minnesota Mining And Manufacturing Company Electrical connector and method
US5810625A (en) * 1994-09-16 1998-09-22 Siemens Aktiengesellschaft Electronic device, in particular in automatic-control device
CN105720388A (en) * 2014-12-22 2016-06-29 Wago经营有限责任公司 Spring wiring terminal

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3044133C2 (en) * 1980-11-24 1982-12-16 Siemens AG, 1000 Berlin und 8000 München Screwless clamp
DE3044134C2 (en) * 1980-11-24 1983-09-01 Siemens AG, 1000 Berlin und 8000 München Screwless clamp
DE3514097C2 (en) * 1985-04-16 1996-12-19 Wago Verwaltungs Gmbh Connection clamp for electrical conductors
CH667553A5 (en) * 1985-10-09 1988-10-14 Woertz Oskar SCREWLESS ELECTRICAL TERMINAL.
DE3621960A1 (en) * 1986-07-01 1988-01-14 Wagner Robert EXPLOSION-PROTECTED LAMP AND LAMP FOR DOUBLE-PIN BASE FLUORESCENT LAMPS
DE3638508A1 (en) * 1986-11-11 1988-05-19 Ceag Licht & Strom Explosion-proof or flameproof (explosion-protected) fluorescent lamp
DE3638507A1 (en) * 1986-11-11 1988-05-19 Ceag Licht & Strom Explosion-proof or flameproof (explosion-protected) fluorescent lamp
AT389402B (en) * 1987-05-27 1989-12-11 Siemens Ag Oesterreich CLAMP SPRING
DE4019130C2 (en) * 1990-06-13 2000-03-23 Wago Verwaltungs Gmbh Floor clamp for electrical conductors
DE4132407C2 (en) * 1991-09-26 2000-11-02 Wago Verwaltungs Gmbh Common connection for electr. Distribution systems
DE4235550B4 (en) * 1992-10-19 2006-04-27 Wago Verwaltungsgesellschaft Mbh Electrical connection or connection terminal
DE4237733C1 (en) * 1992-11-09 1993-12-23 Weidmueller Interface Screwless connector for electrical conductors
DE4425880A1 (en) * 1994-07-12 1996-01-18 Wago Verwaltungs Gmbh Connector clamp with SMD contact
DE4435781A1 (en) * 1994-10-06 1996-04-11 Siemens Ag Spring-force electrical wire clamp connector with protection from over-stress
FR2732518B1 (en) * 1995-03-29 1997-04-30 Entrelec Sa CONNECTION ARRANGEMENT FOR ELECTRICAL CONDUCTIVE WIRES AND MODULE, IN PARTICULAR OF THE JUNCTION BLOCK TYPE, EQUIPPED WITH SUCH AN ARRANGEMENT
GB9508153D0 (en) * 1995-04-21 1995-06-07 Amp Gmbh Spring clamp terminal
DE19626390C2 (en) * 1995-07-02 1999-10-14 Phoenix Contact Gmbh & Co Electrical terminal with busbar connection
DE19529028B4 (en) * 1995-07-28 2008-01-24 Wago Verwaltungsgesellschaft Mbh Electric spring-loaded terminal
DE19611854C1 (en) * 1996-03-26 1997-07-10 Kostal Leopold Gmbh & Co Kg Thread-less terminal for contacting electrical conductor
FR2761534B1 (en) * 1997-03-28 1999-05-28 Entrelec Sa ELECTRICAL CONNECTION ARRANGEMENT AND MODULE, IN PARTICULAR FOR CONNECTION, COMPRISING SUCH AN ARRANGEMENT
DE19741135A1 (en) * 1997-09-12 1999-04-01 Wago Verwaltungs Gmbh Electrical connector clamp
DE19756751C1 (en) * 1997-12-19 1999-04-29 Broekelmann Jaeger & Busse Automatic wiring apparatus for attaching wires to components
DE19810310C5 (en) * 1998-03-11 2004-11-25 Phoenix Contact Gmbh & Co. Kg Terminal for electrical conductors
DE29910181U1 (en) * 1999-06-11 2000-10-12 Weidmüller Interface GmbH & Co, 32760 Detmold Tension spring connection
DE29911123U1 (en) * 1999-06-25 2000-08-10 WECO Wester, Ebbinghaus GmbH & Co. KG, 63452 Hanau Connector
DE29911124U1 (en) * 1999-06-25 2000-08-10 WECO Wester, Ebbinghaus GmbH & Co. KG, 63452 Hanau Terminal with lever actuation
DE10052812C2 (en) * 2000-10-24 2002-11-21 Phoenix Contact Gmbh & Co Terminal for at least one optical fiber
DE10304493A1 (en) * 2003-02-05 2004-08-26 Phoenix Contact Gmbh & Co. Kg Extension spring for electrical clamps, has clamping leg with window through which end section of stop leg is inserted forming corner edge in middle area of face edge of stop leg end section
DE102004018904B4 (en) * 2004-04-15 2013-11-14 Wago Verwaltungsgesellschaft Mbh Screwless busbar connection for electrical terminals
ITMI20130200A1 (en) 2013-02-12 2014-08-13 Ilme Spa ELECTRICAL CONNECTION DEVICE WITH SPRING CONNECTION ELEMENT AND COMPACT ACTUATOR AND MULTIPOLAR CONNECTOR INCLUDING A PLURALITY OF THESE SPRING CONTACTS
US9553387B2 (en) 2014-07-15 2017-01-24 Industria Lombarda Materiale Elettrico—I.L.M.E. S.P.A. Electrical connecting device with spring connection element and compact actuator and multi-pole plug connector comprising a plurality of said spring contacts
DE102018101381A1 (en) 2018-01-23 2019-07-25 Harting Electric Gmbh & Co. Kg Connector with spring contact

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1887768U (en) * 1964-02-20
DE1105937B (en) * 1956-06-27 1961-05-04 Oberlind Veb Elektroinstall Electrical connection terminal
DE1196741B (en) * 1961-07-07 1965-07-15 Fleischmann Geb Connection terminal, in particular for electrically operated toys
DE6802185U (en) * 1968-10-14 1969-03-27 Wago Kontakttechnik Gmbh SCREWLESS TERMINAL AND CONNECTING CLAMP
DE2432084A1 (en) * 1974-07-04 1976-01-22 Wago Kontakttechnik Gmbh Screwless electric wire connector - has contact strip bent into rectangle and punched-out retaining and contact lugs

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5095178A (en) * 1990-12-21 1992-03-10 Minnesota Mining And Manufacturing Company Electrical connector and method
US5810625A (en) * 1994-09-16 1998-09-22 Siemens Aktiengesellschaft Electronic device, in particular in automatic-control device
CN105720388A (en) * 2014-12-22 2016-06-29 Wago经营有限责任公司 Spring wiring terminal
CN105720388B (en) * 2014-12-22 2019-05-17 Wago经营有限责任公司 Spring connecting terminal

Also Published As

Publication number Publication date
DE2706482A1 (en) 1978-08-17
DE2706482C2 (en) 1985-02-21

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19970815