US3703700A - Terminal block for slot connection of insulated conductors - Google Patents

Terminal block for slot connection of insulated conductors Download PDF

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Publication number
US3703700A
US3703700A US125301A US3703700DA US3703700A US 3703700 A US3703700 A US 3703700A US 125301 A US125301 A US 125301A US 3703700D A US3703700D A US 3703700DA US 3703700 A US3703700 A US 3703700A
Authority
US
United States
Prior art keywords
terminal
holder
terminal holder
recesses
recess
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
US125301A
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English (en)
Inventor
Sune Sigurd Sixten Hasselbohm
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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
Priority claimed from SE04766/70A external-priority patent/SE340645B/xx
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Application granted granted Critical
Publication of US3703700A publication Critical patent/US3703700A/en
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
    • 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
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
    • H01R4/2445—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives
    • H01R4/2462—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives the contact members being in a slotted bent configuration, e.g. slotted bight
    • 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
    • H01R9/226—Bases, e.g. strip, block, panel comprising a plurality of conductive flat strips providing connection between wires or components

Definitions

  • Each terminal is bent 180 around a transverse line dividing the terminal into a longer and a shorter part, the longer part being inserted in a through passage of the holder and the shorter part in blind recess.
  • the insulated conductor is connected to a terminal of the terminal block by pressing it into a pair of slots which are running parallelly from a hole in the bent end of the terminal towards the ends of each of the parts.
  • an embossed stop in the longer part which stop snaps against a bottom edge of a cut-out in the holder when the terminal has been inserted in the holder.
  • This invention relates to a terminal block for slot connection of insulated conductors comprising a number of terminals fixed in a holder.
  • terminal blocks for example for telephone cables, which are designed in such a way that the conductors of the cables can be connected without first removing the insulation and without the use of tightening screws.
  • the terminals are provided with a slot extending from a hole, the diameter of the hole being somewhat larger than the diameter of the insulated conductor and the width of the slot being somewhat narrower than the diameter of a bared conductor.
  • the connection is carried out by threading the conductor through the hole and forcing it down into the slot whereby the edges cut through the insulation. In this way two contact surfaces are obtained and the conductor is retained.
  • the disadvantage of a terminal of this kind is, among other things, that the diameter of the bared conductor varies somewhat, thus causing difficulties in getting the proper width of the slot and the conductor firmly retained. Furthermore the terminal cannot be made too thin or it will affect the mechanical stability.
  • An object of this invention is to provide a terminal block having terminals made for slot connection, which give better contacts and are less sensitive to variations of the conductor diameters than is the case of earlier constructions and this new terminal furthermore gives lower costs of material.
  • FIGS. 1-3 show a terminal block according to the invention seen from the front, from the side and from above respectively;
  • FIGS. 4 and 5 show two different embodiments of the terminals being included in the terminal block according to the invention before the bending;
  • FIG. 6 shows the same terminal from an edge bent ready for use
  • FIG. 7 shows in perspective the lower part of the terminal and FIGS. 8-10 show a modified form of a terminal block according to the invention in a front view, a side view and in a top view respectively.
  • FIGS. 1-3 1 indicates a holder which suitably can be moulded in one piece from an insulating material.
  • the holder is intended for mounting a number of terminals 2, of which, for the. sake of simplicity, only one is shown.
  • the holder is for each terminal provided with two T-shaped recesses 3 and 4 located opposite each other, the recess 3 running through the holder while the recess 4 is blind, i.e., running only a part way into the holder.
  • the recesses are designed in the form of grooves but they can as well be designed as cavities in their whole length or part of it.
  • the terminals for example designed according to FIG.
  • the lower part of the terminal is designed in the known manner with a slot 9 extending from a hole 8 for slot connection of conductors from the lower part of the terminal block.
  • the terminal 2 is further provided with two slots 7a and 7b extending from the hole 6.
  • the holder is provided with a cutting-out 5 passing through the wall between the recesses 3 and 4.
  • FIG. 5 a further embodiment of the terminal 2 is shown.
  • the slots 7a and 7b are extending from two separate holes 6a and 6b which after bending.will be located opposite each other. In this way a greater mechanical strength of the terminal will be obtained which in certain cases can be desirable even if the conductor then has to be threaded.
  • the terminal in order to prevent the terminal from sliding in its recess, for example upon removing an earlier connected conductor, and thus no longer taking the right position in the holder, the terminal, as is apparent from the FIGS. 4,5,6 and 7 can suitably in its lower part be provided with an embossed stop 12 having a surface which is rising in the direction from the end of the longer part of the terminal in order to facilitate the inserting of it into the holder which is made possible by the resilient construction of the holder. As it appears from FIG. 1 the stop rests against the bottom edge of a cutting-out 11 in the lower part of the holder when the terminal has been fixed in the holder.
  • FIGS. 8-10 show a modified form of the terminal block according to the invention, in a front view, in a side view and in a top view respectively.
  • the terminals are placed in their position and are bent one more time
  • the terminals can suitably be modified relatively to the examples shown in the FIGS. 4-6 so that, for example, the form of the hole and the holes respectively in the two ends of the terminal is identical.
  • a terminal block according to the last mentioned example has, of course, not as long leakage current paths between the terminals as the preceding one but for the use indoors the insulation resistance is in normal cases satisfactory.
  • a terminal block assemblage comprising: a flat shaped terminal holder of insulating material, said terminal holder being provided with a plurality of pairs of oppositely facing terminal recesses which are separated by insulating material, a first recess of each pair passing completely through said terminal holder to provide a through channel, the second recess of each pair extending only part way through said terminal holder to provide a blind channel, and cut-outs provided in said terminal holder at a first edge thereof and opposite corresponding portions of said recesses whereby portions of said channels are exposed; and a plurality of terminals, each associated with a different one of the pairs of terminal recesses, each of said terminals comprising a flat strip of conductive material bent at least 180 at a bend line perpendicular to the longitudinal axis of the strip to provide a longer leg and a shorter leg, said shorter leg being disposed in said second recess, said longer leg being disposed in said first recess with the end thereof extending beyond a second edge of said terminal holder, the portion
  • each of said longer legs is bent back along another bend line perpendicular to said longitudinal axis and is provided with a further opening means in the region of said bend line for accepting a conductor.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
US125301A 1970-04-08 1971-03-17 Terminal block for slot connection of insulated conductors Expired - Lifetime US3703700A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE04766/70A SE340645B (enrdf_load_stackoverflow) 1970-04-08 1970-04-08
SE1623070 1970-12-01

Publications (1)

Publication Number Publication Date
US3703700A true US3703700A (en) 1972-11-21

Family

ID=26654555

Family Applications (1)

Application Number Title Priority Date Filing Date
US125301A Expired - Lifetime US3703700A (en) 1970-04-08 1971-03-17 Terminal block for slot connection of insulated conductors

Country Status (9)

Country Link
US (1) US3703700A (enrdf_load_stackoverflow)
JP (1) JPS547952B1 (enrdf_load_stackoverflow)
CA (1) CA919788A (enrdf_load_stackoverflow)
CS (1) CS156492B2 (enrdf_load_stackoverflow)
DK (1) DK137779B (enrdf_load_stackoverflow)
ES (1) ES198365Y (enrdf_load_stackoverflow)
FI (1) FI53903C (enrdf_load_stackoverflow)
NO (1) NO128353B (enrdf_load_stackoverflow)
SU (1) SU485610A3 (enrdf_load_stackoverflow)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778750A (en) * 1972-02-10 1973-12-11 Panduit Corp Wire termination and splicing system
US3854114A (en) * 1972-08-10 1974-12-10 J Kloth Notched plate clasp apparatus
JPS5048487A (enrdf_load_stackoverflow) * 1973-05-30 1975-04-30
US3910671A (en) * 1974-01-02 1975-10-07 Amp Inc Printed circuit board terminal receptacle
US3960436A (en) * 1973-09-10 1976-06-01 International Standard Electric Corporation Electrical connector
JPS5225283A (en) * 1975-08-20 1977-02-25 Hitachi Ltd Contact maker of connector for flat cable and its connector
EP0002099A1 (en) * 1977-09-15 1979-05-30 AMP INCORPORATED (a New Jersey corporation) Slotted plate electrical terminal
US5423694A (en) * 1993-04-12 1995-06-13 Raychem Corporation Telecommunications terminal block
US5557250A (en) * 1991-10-11 1996-09-17 Raychem Corporation Telecommunications terminal block
US5588859A (en) * 1993-09-20 1996-12-31 Alcatel Cable Interface Hermaphrodite contact and a connection defined by a pair of such contacts
US5742223A (en) * 1995-12-07 1998-04-21 Raychem Corporation Laminar non-linear device with magnetically aligned particles
EP0871242A1 (en) * 1991-10-11 1998-10-14 Raychem Corporation Telecommunications terminal block
US6302723B1 (en) 1991-10-11 2001-10-16 Tyco Electronics Corporation Telecommunications terminal block

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3258733A (en) * 1959-03-19 1966-06-28 Wire connector
US3394454A (en) * 1962-03-26 1968-07-30 Western Electric Co Methods of making insulationpenetrating clip-type electrical connectors
FR2002058A1 (enrdf_load_stackoverflow) * 1968-02-16 1969-10-03 Northern Electric Co
US3594712A (en) * 1968-11-07 1971-07-20 Minnesota Mining & Mfg Connector
US3605072A (en) * 1969-02-28 1971-09-14 Minnesota Mining & Mfg Solderless wire connector

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3258733A (en) * 1959-03-19 1966-06-28 Wire connector
US3394454A (en) * 1962-03-26 1968-07-30 Western Electric Co Methods of making insulationpenetrating clip-type electrical connectors
FR2002058A1 (enrdf_load_stackoverflow) * 1968-02-16 1969-10-03 Northern Electric Co
US3594712A (en) * 1968-11-07 1971-07-20 Minnesota Mining & Mfg Connector
US3605072A (en) * 1969-02-28 1971-09-14 Minnesota Mining & Mfg Solderless wire connector

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778750A (en) * 1972-02-10 1973-12-11 Panduit Corp Wire termination and splicing system
US3854114A (en) * 1972-08-10 1974-12-10 J Kloth Notched plate clasp apparatus
JPS5048487A (enrdf_load_stackoverflow) * 1973-05-30 1975-04-30
US3960436A (en) * 1973-09-10 1976-06-01 International Standard Electric Corporation Electrical connector
US3910671A (en) * 1974-01-02 1975-10-07 Amp Inc Printed circuit board terminal receptacle
JPS5225283A (en) * 1975-08-20 1977-02-25 Hitachi Ltd Contact maker of connector for flat cable and its connector
EP0002099A1 (en) * 1977-09-15 1979-05-30 AMP INCORPORATED (a New Jersey corporation) Slotted plate electrical terminal
US5557250A (en) * 1991-10-11 1996-09-17 Raychem Corporation Telecommunications terminal block
EP0871242A1 (en) * 1991-10-11 1998-10-14 Raychem Corporation Telecommunications terminal block
US6093050A (en) * 1991-10-11 2000-07-25 Baum; Thomas Matthew Telecommunications terminal block
US6302723B1 (en) 1991-10-11 2001-10-16 Tyco Electronics Corporation Telecommunications terminal block
US5423694A (en) * 1993-04-12 1995-06-13 Raychem Corporation Telecommunications terminal block
US5588869A (en) * 1993-04-12 1996-12-31 Raychem Corporation Telecommunications terminal block
US5588859A (en) * 1993-09-20 1996-12-31 Alcatel Cable Interface Hermaphrodite contact and a connection defined by a pair of such contacts
US5742223A (en) * 1995-12-07 1998-04-21 Raychem Corporation Laminar non-linear device with magnetically aligned particles

Also Published As

Publication number Publication date
NO128353B (enrdf_load_stackoverflow) 1973-10-29
DK137779C (enrdf_load_stackoverflow) 1978-10-09
FI53903C (fi) 1978-08-10
FI53903B (fi) 1978-05-02
SU485610A3 (ru) 1975-09-25
DK137779B (da) 1978-05-01
DE2114708A1 (de) 1971-12-02
ES198365U (es) 1975-06-01
DE2114708B2 (de) 1976-11-18
JPS547952B1 (enrdf_load_stackoverflow) 1979-04-11
CS156492B2 (enrdf_load_stackoverflow) 1974-07-24
ES198365Y (es) 1975-11-01
CA919788A (en) 1973-01-23

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