EP0704942A2 - Bloc de connexion électrique - Google Patents

Bloc de connexion électrique Download PDF

Info

Publication number
EP0704942A2
EP0704942A2 EP95115104A EP95115104A EP0704942A2 EP 0704942 A2 EP0704942 A2 EP 0704942A2 EP 95115104 A EP95115104 A EP 95115104A EP 95115104 A EP95115104 A EP 95115104A EP 0704942 A2 EP0704942 A2 EP 0704942A2
Authority
EP
European Patent Office
Prior art keywords
contact
conductor
terminal
connection
terminal block
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.)
Granted
Application number
EP95115104A
Other languages
German (de)
English (en)
Other versions
EP0704942A3 (fr
EP0704942B1 (fr
Inventor
Holger Dipl.-Ing.(Fh) Strack
Gerhard Kubernus
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.)
Wieland Electric GmbH
Original Assignee
F Wieland Elektrische Industrie 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 F Wieland Elektrische Industrie GmbH filed Critical F Wieland Elektrische Industrie GmbH
Publication of EP0704942A2 publication Critical patent/EP0704942A2/fr
Publication of EP0704942A3 publication Critical patent/EP0704942A3/fr
Application granted granted Critical
Publication of EP0704942B1 publication Critical patent/EP0704942B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • H01R9/2483—Terminal blocks specially adapted for ground connection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/515—Terminal blocks providing connections to wires or cables

Definitions

  • the invention relates to an electrical terminal block with the features of the preamble of claim 1.
  • Such a terminal block for connection to printed circuit boards is known from DE 42 28 025 A1 .
  • the insulating terminal housing contains a single row of connection contacts.
  • the row of contact contacts consists of a large number of contact connections.
  • Each contact connection is assigned a solder pin that protrudes from the terminal box.
  • a conductor inserted into the terminal housing from the outside can be electrically connected to each contact connection.
  • the conductor is inserted into the receiving space of a conductor clamping element which acts as a pulling sleeve and is clamped between a bow-like conductor protection element and the conductor clamping element.
  • the conductor protection element is also located in the receiving space of the conductor clamping element and is connected in one piece to the solder connection pin. The clamped conductor is therefore electrically conductively connected to the associated solder pin.
  • a connecting rail running in the row direction of the contact connections is provided, which is pushed onto the soldering connection pins from the outside and engages behind the latter with electrically contacting clamping pressure.
  • a disadvantage of the connecting rail is that it has to be subsequently placed on the terminal housing as a separate component and thus causes an additional assembly outlay for the terminal block. It is pushed onto the solder pins from the outside and is also unprotected against external influences in the final assembly state. It can therefore easily be mechanically damaged.
  • the outer area of the connecting rail can accidentally come into contact with a live conductor come and cause short circuits or other destruction of components on the circuit board. This type of potential multiplication is therefore questionable in terms of safety.
  • Another disadvantage is the complicated geometric shape of the connecting bar in order to produce a sufficient electrically contacting clamping pressure between the connecting bar and the soldering connection pins. Thus, the manufacturing cost of the entire terminal block is high.
  • connection terminal strip for the electrical connection of actuators, sensors, initiators or the like. With printed circuit boards of a PLC insert is known.
  • This terminal block contains several rows of contact contacts. The contact connections of a row of contact contacts can be connected for potential multiplication by bridges concealed inside the terminal housing.
  • the invention has for its object to create the potential multiplication in a connection terminal block of the type mentioned in the safety-technical and manufacturing technology simple.
  • the contact rail can be easily manufactured in terms of production technology.
  • contact resistance between the conductor protection elements and the comb bracket is avoided. The electrical contacting of the lined up conductor protection elements is reliably maintained.
  • the contact rail Due to its comb-like configuration, the contact rail can be easily manufactured from a metal strip in terms of production technology.
  • the shape of the contact rail can practically be punched out of the raw form as an endless strip will.
  • the endless strip is simply cut to length accordingly. The same punching tool or another manufacturing tool can therefore always be used for multiplying the potential with a different number of contact connections.
  • Contact rails produced in this way also simplify their storage.
  • the contact rail according to the invention can be used in terminal strips with a single row of contact contacts or with several rows of contact contacts.
  • a potential multiplication is then provided for the two connection contact rows assigned to the plus and minus connections and, if appropriate, also for the connection contact row assigned to the protective conductors.
  • the connection contact row assigned to the sensor-specific signals usually does not receive any potential multiplication.
  • the contact rail has an L-shape in cross section. This allows the contact rail to be installed in a very space-saving manner in the terminal housing. The required bending process is easy to implement in terms of production technology.
  • a terminal pin is integrally connected to the contact rail, that is to say mechanically stable. Any contact resistance between the connector pin and a conductor protection element is avoided. The electrical contact between the pin and a pinched conductor can therefore not be accidentally interrupted. This ensures the reliable operation of the terminal block according to the invention.
  • the contact rail In principle, it is sufficient to multiply the contact rail with only a single connecting pin, for example a soldering pin for a printed circuit board, since the plus or minus voltage is only present a single conductor track of the circuit board must be tapped and is distributed to the appropriate number of conductor protection elements by multiplying the potential.
  • the production with several pins is advantageous because then the contact rail has at least one pin regardless of its required length.
  • a potential multiplication for the protective conductor it is even necessary that a pin is assigned to all contact connections, since the protective conductor cannot be looped through the conductor tracks of the printed circuit board. With a contact rail designed according to claim 4, all types of terminal strips or printed circuit boards can therefore be covered with a single production tool.
  • Claim 5 also takes into account the space-saving installation and the simple manufacture of a contact rail equipped with connecting pins.
  • the contact rail is inserted inside the terminal housing from the inside into the receiving spaces of the conductor clamping elements.
  • the contact rail is therefore not accessible from the outside and is well protected against mechanical damage and accidental electrical contacts. Only the connecting pins formed on the contact rail protrude from the terminal housing.
  • the contact rail is mechanically stably fixed in its inserted state within the terminal housing. This avoids inadvertent changes in the position of the contact rail and thus also accidental interruptions in the electrical contact between the contact rail and the conductor inserted into the contact connection.
  • a motage-friendly latching is provided as a mechanical fixation.
  • the locking recesses provided for the locking according to claim 8 in the comb bracket of the contact rail do not require any further manufacturing step, since they can be produced, for example, by punching with the same work step with which the comb shape of the contact rail is already produced from a raw metal strip. For a uniform stable fixation of the contact rail along the entire row of contact contacts, two adjacent notches in the row direction are at the same distance.
  • Clamping housing made of insulating plastic can be expanded and shortened in a modular manner in the row direction.
  • the terminal block with a small number of terminal housing types - in the case of claim 10 even with a single terminal housing type - can be adapted to different types of printed circuit boards and / or mating connector strips.
  • the storage and procurement of spare parts for the terminal box is also simplified.
  • the assembly of the individual layers of a terminal box is also easy for laymen.
  • the housing layers are e.g. simply put together by a tongue and groove connection.
  • the electrical terminal block 1 has a clamping housing 2 made of insulating plastic. 1 has a rectangular outline shape.
  • Four terminal contact rows 3, 4, 5, 6 are inserted into the terminal box. They run parallel to each other in the row direction 7.
  • Each row of connection contacts has a plurality of contact connections 8 lined up in the row direction 7.
  • a solder pin 9 is associated with each contact terminal 8.
  • the solder pins 9 are all aligned in parallel and protrude from the terminal housing 2 in the direction of insertion 10. In this direction, the terminal block 1 plugged onto a printed circuit board and inserted with their solder connection pins 9 into the metallized solder eyes of the printed circuit board.
  • Each contact connection 8 consists of a clamping screw 11, a conductor clamping element 12 screwed to the clamping screw 11 and a bow-like conductor protection element 13.
  • the conductor clamping element 12 delimits a receiving space 14 which is open in the direction of insertion 15 which extends transversely to the row direction 7 and transversely to the plugging direction 10.
  • a conductor 24 is first inserted in the insertion direction 15 into a funnel-like insertion opening 16 of the terminal housing 2 and then into the receiving space 14.
  • the clamping screw 11 By actuating the clamping screw 11, the conductor is clamped between the conductor protection element 13, which extends approximately in the direction of insertion 15, and the conductor clamping element 12 in an electrically contacting manner.
  • the construction and operation of the contact terminal 8 is described in detail in DE 42 28 025 A1. The contact terminal 8 is therefore not discussed in detail here.
  • the cross section of the terminal housing 2 is stepped. Each stage is assigned to a row of contact contacts 3, 4, 5, 6.
  • the solder connection pins 9 and the respectively assigned conductor protection elements 13 of the connection contact rows 3, 4, 5 are integrally connected to one another by a metallic connecting web 17 which extends essentially in the plug-in direction 10.
  • the connecting webs 17 are positively inserted into corresponding slots in the terminal housing 2. With a bent free end, the conductor protection elements 13 of the composite webs 17 are attached to the insertion opening 16. Due to the form-fitting insert of the composite webs 17, the solder connection pins 9 and the conductor protection elements 13 of the connection contact rows 3, 4, 5 are already mechanically fixed in the terminal housing 2.
  • connection contact rows 3, 4, 5 the solder connection pins 9 and the conductor protection elements 13 of the connection contact row 6 are connected to one another in an exactly L-shaped manner, that is to say the conductor protection elements 13 and the solder connection pins 9 are bent at 90 ° to one another with a bending axis running in the row direction 7 ( Fig. 2, Fig. 4).
  • all conductor protection elements 13 of the terminal contact row 6 are integrally connected to one another by a comb bracket 18 running in the row direction 7.
  • the conductor protection elements 13 and the comb bracket 18 together form a comb-like contact rail 19 (FIG. 5).
  • solder connection pins 9 are integrally formed on the side of the comb strap 18 opposite the conductor protection elements 13 in the plug-in direction 10 (FIG. 3).
  • a soldering pin 9 is assigned to a conductor protection element 13.
  • the solder pins 9 therefore also form a comb-like component with the comb bracket 18, the solder pins 9 acting as prongs (FIG. 3).
  • the solder connection pins 9 and the comb bracket 18 lie in a single plane spanned by the plug-in direction 10 and row direction 7.
  • the contact rail 19 is first inserted into the terminal housing 2 from below in approximately the direction of insertion 10. This state is indicated in FIG. 2 by the broken line of the contact rail 19.
  • the contact rail 19 with its conductor protection elements 13 is then inserted into the receiving spaces 14 from the inside in the direction of insertion 15.
  • the contact rail 19 latches with latching projections 20 integrally formed on the terminal housing 2.
  • the latching projection 20 is approximately U-shaped in cross section (FIG. 2) with two spring bars 21 running approximately in the direction of insertion 15 as U-legs.
  • the comb bracket 18 is penetrated in the insertion direction 15 by rectangular locking recesses 22 (FIG. 3).
  • a locking recess 22 is assigned to each conductor protection element 13. In this way, the contact rail 19 is mechanically stably fixed in its inserted state (FIG. 3).
  • Fig. 2 it can be seen that the receiving spaces 14 of the terminal contact row 6 are larger than the receiving spaces 14 of the other terminal contact rows 3, 4, 5.
  • the contact rail 19 is provided for the terminal contacting of protective conductors (cross section, for example, 2.5 mm2), while the The remaining connection contact rows 3, 4, 5 are assigned to the two supply lines and the signal line (cross section, for example, 1.5 mm2) of a sensor or the like.
  • the terminal box is built up in layers in the row direction 7. Adjacent housing layers are put together in the manner of a tongue and groove connection.
  • cylindrical plug pins 23 (FIG. 2) are formed on one side of each housing layer in the row direction 7, while recesses complementary to the plug pins 23 are provided on the side of the housing layer opposite the plug pins 23 in the row direction 7 and not shown in the figures .
  • a housing layer is used for each contact connection 8 along the row direction 7.
  • the construction of the connecting webs 17 and the conductor protection elements 13 assigned to them deviates from the L-shaped construction of the contact rail 19.
  • the conductor protection elements 13 of the plus connecting lines and / or the minus connecting lines are likewise part of an L-shaped contact rail.
  • the composite webs 17 lined up in the row direction 7 are then also connected to one another in one piece.
  • the composite webs 17 of the connection contact rows 3, 4, 5 are locked in the same way as the comb bracket 18 with the terminal housing 2.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
EP95115104A 1994-10-01 1995-09-26 Bloc de connexion électrique Expired - Lifetime EP0704942B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9415801U DE9415801U1 (de) 1994-10-01 1994-10-01 Elektrische Anschlußklemmleiste
DE9415801U 1994-10-01

Publications (3)

Publication Number Publication Date
EP0704942A2 true EP0704942A2 (fr) 1996-04-03
EP0704942A3 EP0704942A3 (fr) 1997-03-26
EP0704942B1 EP0704942B1 (fr) 1999-04-21

Family

ID=6914340

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95115104A Expired - Lifetime EP0704942B1 (fr) 1994-10-01 1995-09-26 Bloc de connexion électrique

Country Status (3)

Country Link
US (1) US5662499A (fr)
EP (1) EP0704942B1 (fr)
DE (2) DE9415801U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7927156B2 (en) 2006-11-06 2011-04-19 Siemens Ag Oesterreich Electrical connector element

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19512221A1 (de) * 1995-03-22 1996-09-26 Wago Verwaltungs Gmbh Elektr. Klemmenleiste für Leiterplatten
FR2862442B1 (fr) * 2003-11-13 2006-05-12 Abb Entrelec Sas Shunt electrique
US7074054B2 (en) * 2004-08-06 2006-07-11 Honeywell International Inc. SMT terminal block
DE102006016354A1 (de) * 2006-04-05 2007-10-18 Mc Technology Gmbh Klemmenblock zum Anschließen von elektrischen Leitern
DE102006016364B4 (de) * 2006-04-05 2012-10-31 Mc Technology Gmbh Klemmenblock zum Anschließen von elektrischen Leitern
GB2472086A (en) * 2009-07-24 2011-01-26 Christopher Mark Hodgskin Electrical junction box unit having integral pyramid formation connections
US10498053B1 (en) * 2019-02-19 2019-12-03 Stephen Sawzin Electrical wiring junction box

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4228025A1 (de) 1992-08-24 1994-03-03 Wieland Elektrische Industrie Elektrische Anschlußklemmleiste
DE4207402C2 (de) 1992-03-09 1994-05-19 Wieland Elektrische Industrie Steckverbinder für speicherprogrammierbare Steuerungen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2833313C2 (de) * 1978-07-29 1980-06-19 C. A. Weidmueller Kg, 4930 Detmold Klemmenblock für gedruckte Schaltungen
DE8712296U1 (de) * 1987-03-25 1988-02-25 WSK Werkzeuge und Sondermaschinen GmbH, 6923 Waibstadt Modul für elektrischen Signalaustausch
DE4001025C1 (en) * 1990-01-16 1991-05-08 Murrelektronik Gmbh, 7155 Oppenweiler, De Terminal block connector coupling cable to components - has PCB base and stepped supports for cable terminals
DE4303717C2 (de) * 1993-02-09 1996-02-08 Phoenix Contact Gmbh & Co Modul zum Anschluß elektrischer Leitungen und zur Verarbeitung und/oder Bearbeitung elektrischer Signale
DE4325614C2 (de) * 1993-07-30 1995-08-31 Weidmueller Interface Reihenklemmenanordnung mit Überspannungsschutzorganen
US5407367A (en) * 1993-09-27 1995-04-18 Vernitron Corporation Barrier terminal strip assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4207402C2 (de) 1992-03-09 1994-05-19 Wieland Elektrische Industrie Steckverbinder für speicherprogrammierbare Steuerungen
DE4228025A1 (de) 1992-08-24 1994-03-03 Wieland Elektrische Industrie Elektrische Anschlußklemmleiste

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7927156B2 (en) 2006-11-06 2011-04-19 Siemens Ag Oesterreich Electrical connector element

Also Published As

Publication number Publication date
EP0704942A3 (fr) 1997-03-26
DE9415801U1 (de) 1994-12-15
EP0704942B1 (fr) 1999-04-21
DE59505695D1 (de) 1999-05-27
US5662499A (en) 1997-09-02

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