US3796923A - Terminal strip and process for producing the same - Google Patents

Terminal strip and process for producing the same Download PDF

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Publication number
US3796923A
US3796923A US00287071A US3796923DA US3796923A US 3796923 A US3796923 A US 3796923A US 00287071 A US00287071 A US 00287071A US 3796923D A US3796923D A US 3796923DA US 3796923 A US3796923 A US 3796923A
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US
United States
Prior art keywords
terminal
rib
branch
strip
channel member
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
US00287071A
Inventor
G Johansson
B Jorgensen
F Mogestad
T Anders
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Telefonaktiebolaget LM Ericsson AB
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Telefonaktiebolaget LM Ericsson AB
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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
    • H05K3/20—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern by affixing prefabricated conductor pattern
    • H05K3/202—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern by affixing prefabricated conductor pattern using self-supporting metal foil pattern
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/02—Constructional details
    • H04Q1/16—Wiring arrangements for selector switches or relays in frames
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09009—Substrate related
    • H05K2201/09118—Moulded substrate
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09209—Shape and layout details of conductors
    • H05K2201/09218—Conductive traces
    • H05K2201/09236—Parallel layout
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/30—Details of processes not otherwise provided for in H05K2203/01 - H05K2203/17
    • H05K2203/302—Bending a rigid substrate; Breaking rigid substrates by bending
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
    • H05K3/4092—Integral conductive tabs, i.e. conductive parts partly detached from the substrate

Definitions

  • a terminal strip comprises a U-shaped bar of insulat- Sept. 10, 1971 Sweden 11549/71 material ha ing a and o branches with sol- 52 us.
  • the present invention relates to a terminal strip or the like of the type which is preferably intended for automatic telephone exchanges and more particularly for interconnections to be made from the multiple fields of group selectors and the like.
  • Terminal blocks in telephone exchanges are to a great extent made of terminal strips consisting of rectangular bars of insulating material, in which are provided soldering tags.
  • the terminal blocks also have different flutes and guides arranged between the terminal strips, so-called wire guides for assembling and guiding the wires which are connected to the soldering tags of the terminal strips.
  • These terminal blocks take up large space in the racks included in a telephone exchange, while at the same time they must be within reach from both side of the rack.
  • An object of the present invention is to provide a terminal strip which occupies relatively small space and which eliminates the demand for flutes and guides.
  • FIG. 1 shows a terminal strip in cross-section
  • FIG. 2 shows a part of the terminal strip in plan view while FIG. 3 shows the same part in side view
  • FIG. 4 shows a group of terminal members.
  • FIG. 1 which shows the terminal strip in crosssection
  • a bar of insulating material is indicated by reference 1, formed as a U-shaped flute comprising a rib and two branches.
  • a terminal member cast into the bar is indicated by reference 2, the end parts 3a and 3b of which are formed into soldering tags and are arranged on the outsides of the two branches.
  • FIG. 2 a part of the terminal strip is shown in plan view and with a part of the terminal members uncovered.
  • the terminal members are punched from metal ribbons and are connected to each other during the production in groups of six by means of bridges 4, which, when the terminal strip is completed, are punched or bored away through holes 5 in the strip.
  • FIG. 3 shows in side view the same part of the terminal strip as FIG. 2.
  • the soldering tags 3 of the terminal members are arranged in rows and columns. The columns form an angle with the edges of the strip, making it possible to use bare wire connections with straight conductors between the soldering tags belonging to the same row as well as between similar placed tags in strips arranged above each other.
  • notches 6 are arranged in the branches of the terminal strip in order to make it possible to connect the conductors which are drawn inside the cable-flute formed strip to the soldering tags.
  • the terminal members are punched from a metal band or ribbon, and form also after the punching, a band since they are connected with each other by means of bridges 4.
  • the terminal members in such a band are then divided in groups comprising six members.
  • FIG. 4 shows such a group. Before the casting into the strip, the group goes through two bending operations. The first bending occurs along the lines BB, the soldering tags 3 being bent at right angles from the observer. In the second bending along the lines A--A the end parts are bent at right angles towards the observer. After the two bending as is apparent in FIG.
  • each of the soldering tags within the group lies in a different level compared with the central parts of the terminal members in such a manner that the soldering tag which lies highest in the one branch of the strip is connected to the one which lies lowest in the opposite branch of the strip and vice versa.
  • This technique permits the use of only one type of terminal members.
  • the technique also permits the soldering tags at the initial punching to form an angle with the central parts of the members so that the soldering tags can have a width which is as large as or larger than the space graduat between the members.
  • the design of the strip can of course be varied within wide limits and still fall within the scope of the invention.
  • the strip instead of producing the strip with terminal members cast in the strip these can be put in grooves in the strip.
  • the strip is then cast preferably in the form of an oblong plate of thermoplastic with transverse grooves for the terminal members in which grooves openings for the soldering tags are arranged.
  • the terminal member groups are bent only along the lines B-B before they are put in the intended grooves.
  • the oblong plate is furthermore provided with line-formed notches at the transition between rib and branches of the strip, along which notches the plate as well as the terminal members are bent in the same operation at a suitable temperature with reference to the plastic material in the plate.
  • a terminal strip comprising a channel member of insulating material defining a channel for cables, said channel member having a rib and two branches such that the cross-section of the channel member is U- shaped, at least one group of parallel terminal conductors within said channel member, each of said conductors extending within each branch and the rib in a direction transverse to the axis of the channel member, and each of the ends of each of said terminal connectors being a soldering tag portion extending perpendicular to the branch and in a direction away from the channel defined by said channel member.
  • soldering tag portions extending from one branch are progressively positioned at different increasing distances from the rib whereas the soldering tag portions extending from the other branch are progressively positioned in the opposite order at different increasing distances from the rib.
  • each branch is provided with at least one opening per group of parallel terminal conductors to permit the passage of cable from within the defined channel to the soldering tags.
  • terminal strip of claim 1 further comprising bridges interconnecting the portions of the terminal conductors within said rib, and guide means in said rib for locating each of said bridges so that the bridges can be opened at a later time to electrically separate the parallel conductors from each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Multi-Conductor Connections (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Abstract

A terminal strip comprises a U-shaped bar of insulating material having a rib and two branches with soldering tags outwardly extending from the branches.

Description

United States Patent [1 1 A 1 96,923
Johansson et a]. Mar. 12, 1974 TERMINAL STRIP AND PROCESS FOR [51] Int. Cl. H02b 9/00 PRODUCING THE SAME [58] Field of Search 174/68.5, 72 A; 338/18 C,
[75] Inventors: Gustav Gunnar Johansson, 338/19; 317/118 122; 339/198 R Huddinge, Sweden; Birger Roat Jorgensen, Tikob, Denmark; Folke [56] References Cited Teodor Mogestad, Stockholm; UNITED STATES PATENTS Thysk Rune N115 Anders 3,002,177 9/1961 Bundy 174 72 A Skarholmen, both of Sweden 3,088,055 4/1963 Schwing 317/122 3,441,806 4/1969 Schwing 317/122 [73] Asslgnee' Telehnakt'ebdaget LM 3,362,005 l/1968 Corns 339 19 x Stockholm, Sweden [22] Filed: Sept- 7, 1972 Primary Examiner-Darrell L. Clay [2]] Appl No 287 071 Attorney, Agent, or Firm-Heme, Baxley and Spiecens 57 ABSTRACT [30] F orelgn Appllcatlon Prlonty Data A terminal strip comprises a U-shaped bar of insulat- Sept. 10, 1971 Sweden 11549/71 material ha ing a and o branches with sol- 52 us. 01 317/122, 174/72 A, 317/118, dermg tags utwardly lextendmg mm the branches 339/198 R 4 Claims, 4 Drawing Figures SHEET 1 [IF 2 PATENTEI] MAR l 2 I974 llIllIllIll TERMINAL STRIP AND PROCESS FOR PRODUCING THE SAME The present invention relates to a terminal strip or the like of the type which is preferably intended for automatic telephone exchanges and more particularly for interconnections to be made from the multiple fields of group selectors and the like.
Terminal blocks in telephone exchanges are to a great extent made of terminal strips consisting of rectangular bars of insulating material, in which are provided soldering tags. The terminal blocks also have different flutes and guides arranged between the terminal strips, so-called wire guides for assembling and guiding the wires which are connected to the soldering tags of the terminal strips. These terminal blocks take up large space in the racks included in a telephone exchange, while at the same time they must be within reach from both side of the rack. An object of the present invention is to provide a terminal strip which occupies relatively small space and which eliminates the demand for flutes and guides.
The invention will be described more fully in the following detailed description when read with the accompanying drawing, in which FIG. 1 shows a terminal strip in cross-section,
FIG. 2 shows a part of the terminal strip in plan view while FIG. 3 shows the same part in side view, and
FIG. 4 shows a group of terminal members.
In FIG. 1 which shows the terminal strip in crosssection, a bar of insulating material is indicated by reference 1, formed as a U-shaped flute comprising a rib and two branches. A terminal member cast into the bar is indicated by reference 2, the end parts 3a and 3b of which are formed into soldering tags and are arranged on the outsides of the two branches. In FIG. 2 a part of the terminal strip is shown in plan view and with a part of the terminal members uncovered. The terminal members are punched from metal ribbons and are connected to each other during the production in groups of six by means of bridges 4, which, when the terminal strip is completed, are punched or bored away through holes 5 in the strip.
FIG. 3 shows in side view the same part of the terminal strip as FIG. 2. The soldering tags 3 of the terminal members are arranged in rows and columns. The columns form an angle with the edges of the strip, making it possible to use bare wire connections with straight conductors between the soldering tags belonging to the same row as well as between similar placed tags in strips arranged above each other. Furthermore, notches 6 are arranged in the branches of the terminal strip in order to make it possible to connect the conductors which are drawn inside the cable-flute formed strip to the soldering tags.
As mentioned above the terminal members are punched from a metal band or ribbon, and form also after the punching, a band since they are connected with each other by means of bridges 4. The terminal members in such a band are then divided in groups comprising six members. FIG. 4 shows such a group. Before the casting into the strip, the group goes through two bending operations. The first bending occurs along the lines BB, the soldering tags 3 being bent at right angles from the observer. In the second bending along the lines A--A the end parts are bent at right angles towards the observer. After the two bending as is apparent in FIG. 1 and 3 each of the soldering tags within the group lies in a different level compared with the central parts of the terminal members in such a manner that the soldering tag which lies highest in the one branch of the strip is connected to the one which lies lowest in the opposite branch of the strip and vice versa. This technique permits the use of only one type of terminal members. The technique also permits the soldering tags at the initial punching to form an angle with the central parts of the members so that the soldering tags can have a width which is as large as or larger than the space graduat between the members.
The design of the strip can of course be varied within wide limits and still fall within the scope of the invention. Instead of producing the strip with terminal members cast in the strip these can be put in grooves in the strip. The strip is then cast preferably in the form of an oblong plate of thermoplastic with transverse grooves for the terminal members in which grooves openings for the soldering tags are arranged. The terminal member groups are bent only along the lines B-B before they are put in the intended grooves. The oblong plate is furthermore provided with line-formed notches at the transition between rib and branches of the strip, along which notches the plate as well as the terminal members are bent in the same operation at a suitable temperature with reference to the plastic material in the plate.
We claim:
1. A terminal strip comprising a channel member of insulating material defining a channel for cables, said channel member having a rib and two branches such that the cross-section of the channel member is U- shaped, at least one group of parallel terminal conductors within said channel member, each of said conductors extending within each branch and the rib in a direction transverse to the axis of the channel member, and each of the ends of each of said terminal connectors being a soldering tag portion extending perpendicular to the branch and in a direction away from the channel defined by said channel member.
2. The terminal strip of claim 1 wherein the soldering tag portions extending from one branch are progressively positioned at different increasing distances from the rib whereas the soldering tag portions extending from the other branch are progressively positioned in the opposite order at different increasing distances from the rib.
3. The terminal strip of claim 2 wherein each branch is provided with at least one opening per group of parallel terminal conductors to permit the passage of cable from within the defined channel to the soldering tags.
4. The terminal strip of claim 1 further comprising bridges interconnecting the portions of the terminal conductors within said rib, and guide means in said rib for locating each of said bridges so that the bridges can be opened at a later time to electrically separate the parallel conductors from each other.

Claims (4)

1. A terminal strip comprising a channel member of insulating material defining a channel for cables, said channel member having a rib and two branches such that the cross-section of the channel member is U-shaped, at least one group of parallel terminal conductors within said channel member, each of said conductors extending within each branch and the rib in a direction transverse to the axis of the channel member, and each of the ends of each of said terminal connectors being a soldering tag portion extending perpendicular to the branch and in a direction away from the channel defined by said channel member.
2. The terminal strip of claim 1 wherein the soldering tag portions extending from one branch are progressively positioned at different increasing distances from the rib whereas the soldering tag portions extending from the other branch are progressively positioned in the opposite order at different increasing distances from the rib.
3. The terminal strip of claim 2 wherein each branch is provided with at least one opening per group of parallel terminal conductors to permit the passage of cable from within the defined channel to the soldering tags.
4. The terminal strip of claim 1 further comprising bridges interconnecting the portions of the terminal conductors within said rib, and guide means in said rib for locating each of said bridges so that the bridges can be opened at a later time to electrically separate the parallel conductors from each other.
US00287071A 1971-09-10 1972-09-07 Terminal strip and process for producing the same Expired - Lifetime US3796923A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1154971 1971-09-10

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US3796923A true US3796923A (en) 1974-03-12

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US (1) US3796923A (en)
JP (1) JPS4876087A (en)
AU (1) AU470758B2 (en)
BE (1) BE788558A (en)
DE (1) DE2243970C3 (en)
ES (1) ES406544A1 (en)
FR (1) FR2152246A5 (en)
GB (1) GB1402310A (en)
IT (1) IT967332B (en)
NL (1) NL7212068A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US20170127551A1 (en) * 2014-05-20 2017-05-04 Patchbox Gmbh Insert Element for Frameworks
US11088066B2 (en) * 2018-03-19 2021-08-10 Tactotek Oy Multilayer structure and related method of manufacture for electronics

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US20170127551A1 (en) * 2014-05-20 2017-05-04 Patchbox Gmbh Insert Element for Frameworks
US9854699B2 (en) * 2014-05-20 2017-12-26 Patchbox Gmbh Insert element for frameworks
US11088066B2 (en) * 2018-03-19 2021-08-10 Tactotek Oy Multilayer structure and related method of manufacture for electronics
US11594482B2 (en) 2018-03-19 2023-02-28 Tactotek Oy Multilayer structure and related method of manufacture for electronics

Also Published As

Publication number Publication date
GB1402310A (en) 1975-08-06
AU4619972A (en) 1974-03-07
DE2243970A1 (en) 1973-03-22
IT967332B (en) 1974-02-28
FR2152246A5 (en) 1973-04-20
JPS4876087A (en) 1973-10-13
BE788558A (en) 1973-01-02
AU470758B2 (en) 1976-03-25
DE2243970B2 (en) 1975-03-13
NL7212068A (en) 1973-03-13
DE2243970C3 (en) 1975-10-30
ES406544A1 (en) 1976-01-01

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