US3614294A - Device for rapidly interconnecting two insulated electrical conductors - Google Patents

Device for rapidly interconnecting two insulated electrical conductors Download PDF

Info

Publication number
US3614294A
US3614294A US20325A US3614294DA US3614294A US 3614294 A US3614294 A US 3614294A US 20325 A US20325 A US 20325A US 3614294D A US3614294D A US 3614294DA US 3614294 A US3614294 A US 3614294A
Authority
US
United States
Prior art keywords
cylinder
wires
piston
hollow
diameter
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
US20325A
Other languages
English (en)
Inventor
Jean Lerouzic
Guy J Mascarin
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3614294A publication Critical patent/US3614294A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H01R4/2491—Connections using contact members penetrating or cutting insulation or cable strands the contact members penetrating the insulation being actuated by conductive cams or wedges

Definitions

  • Saffitz ABSTRACT An article of manufacture for the rapid connection of insulated conductive wires without requiring previous preparation or stripping of the insulation to bare of the wires, the wires being clamped between a hollow metal cylinder and a piston slidable in the hollow metal cylinder; the hollow metal cylinder being'formed with a radial slot extending substantially over half its diameter and this slot receiving the wires to be connected.
  • the piston is moved to bend the wires and simultaneously tear the insulation thereof and thereby bring the wires into contact with one another.
  • a hollow plastic cylinder surrounds the back portion of the cylinder and the piston and serves as insulation for the connection.
  • This invention relates to an article of manufacture for rapidly interconnecting two insulated electrical conductors, the article of manufacture using simple means enabling the connection to be made without the wires having to be previously bared and without any other form of preparation beforehand. Also, the connections thus made are free from welds.
  • connection described is of use in all cases in which it is required to join two conductors, more particularly for telephone lines having a large number of pairs where it is useful to be able to make connections automatically and rapidly.
  • Various connectors based on a clamping principle are known and these use a metal gripper in the form of a divided slat or strip.
  • the slot or aperture is generally Y-shaped to guide the wire when the device is used and to clamp the cable core at the end of its travel after the insulation of the wire has been cut as the wire passes through the aperture; since the aperture is narrower than diameter of the wire and since the metal of the connection where the aperture is disposed is resilient, an electrical contact is made.
  • various means can be used to apply various pressure contacts to a single wire.
  • a single sheet-metal plate or sheet is pierced at a number of places by punching so that the material displaced from the apertures forms projections which pierce the insulation of the wires to be connected and provide the required contact by pressing on the system formed by the plate and the wires wound therearound.
  • wires are connected by a small sheet-metal connector having a sinuously extending socket whose sides provide sharp edges formed by sheet-metal parts bent towards the inside.
  • the member is deformed so that the wires are immobilized therein and the projecting parts of the member penetrate into the insulation to make contact.
  • the method according to the invention comprises clamping the wires to be connected between a cylinderlike member and a pistonlike member slidable therein to pierce and remove the insulation when the members are positioned. Clamping is effected by jamming of the wires between the cylinder and piston and is maintained by the resilience of the metals used, any relative movement being prevented by static friction on the familiar principles of force fits.
  • a feature of the invention is therefore that electrical contact is made not by contacts bearing on sharp edges but by rubbing contacts, so that electrical resistance is reduced yet there is no appreciable reduction in the ability of the wires to withstand mechanical pulling.
  • the connector according to the invention is smaller than the known connectors. Its ease of use and the fact that it can be positioned by means of a pair of flat-nosed pliers mean that the connector according to the invention can be used in a simple automatic machine, an advantage more particularly for joining up two telephone cables having a large number of in which D denotes cylinder diameter, d denotes the diameter of the conductor together with its insulation, and e denotes cylinder thickness.
  • the connector according to the invention can also be used with multistrand wires, although the large number of types of multistrand wires available makes it necessary to test before determining optimum connector dimensions.
  • FIG. 1 is a sectioned plan view of a loading strip or tape or the like on which a number of connectors are disposed;
  • FIG. 2 is a view in side elevation of a loading strip, the wires which it is required to connect having been placed in a connector;
  • FIG. 3 is a plan view of a connector with the wires which it is required to connect in position
  • FIGS. 4 and 5 are views, in section and in plan respectively, of a connector in use.
  • FIGS. 1 and 2 are views, in sectioned plan and side elevation respectively, of part of a loading facility.
  • Connectors awaiting assembly are disposed in a thin flexible plastic strip formed by a number of hollow insulating plastic cylinders 100 which are interconnected by way of bridging sections as 101.
  • a strip 100 resembles a hunter's cartridge belt.
  • Each hollow insulating plastic cylinder 100 contains a connector comprising two rigid members 110, 120, member 1 10 being a hollow cylindrical tube formed with a radial aperture or slot 1 11 over half its diameter, while member 120 is a piston whose large-diameter part 121 slides with considerable friction within the walls of cylindrical member 110.
  • the larger diameter part 121 of piston 120 is tapered by the circular fillet 123 to form a v reduced-diameter part 122 of the piston and the face of the reduced part serves as the tool for manipulating the connecting device.
  • Aperture 111 is adapted to receive two electrically conductive wires, as 112, 113, whose outer diameter is equal to the width of aperture 111 and which requires no baring nor any other preparation beforehand.
  • plastic cylinders I00 constitute the first hollow cylinders and metal cylinders I10 constitute the second hollow cylinders, cylinders having a radial slot 111.
  • Metal piston fitting in tight engagement within metal cylinder 110 provides good electrical contact between the bared and bent ends of conductors I12 and 113 shown in FIGS. 1 and 5.
  • stripping, bending, connecting and locking are carried out simply by the movement of the piston within the metal cylinder in the plastic insulating cylindrical enclosure I00.
  • FIGS. 2 and 3 also show the position of the wires I12, 113 relatively to the connector before any positioning operation.
  • the connector has been detached from the adjacent connectors to which it was stuck by parts, as 101, left by incomplete cutting of the plastic insulating material.
  • the parts 101 are frangible to facilitate separation.
  • FIGS. 4 and 5 show the same connector after bringing into operation.
  • the step of bringing the connector into operation mainly comprises applying pressure to the piston 120 to move the same in cylinder 110.
  • the piston moves, its part 122 engages and moves the wires I12, 113.
  • the wire 113 has been bent at right angles into a rectangular shape, and the wire 112, which was moved along by the piston in the same movement, has taken up a triangular shape.
  • d denotes the diameter of part 122
  • D denotes the As the piston moves, the insulating sleeve 100 is also moved in the same direction and bends the two wires 112, 113 along the connector. The contact area is therefore insulated from the environment.
  • the connector described is of use with plastics and paper insulated wires. Connector diameter depends of course on wire diameters. To improve contact quality, the connector surfaces are tinned, tin also serving as an antifriction material.
  • the contacting parts of the wires can be protected against oxidation by applications of silicone greases.
  • vibration and impact tests at different frequencies in conditions similar to the practical working conditions of an energized cable show no impairment of the contacts, and no impairment is found either in accelerated aging tests in a hot wet atmosphere.
  • An article of manufacture for quick interconnection of two insulated electrical conductors comprising:
  • a second metallic hollow cylinder smaller in diameter than the first cylinder and formed with a radial slot over about half of the diameter, said second cylinder being frictionally retained and lying partly within the first cylinder to expose said radial slot;
  • a metallic piston having a large-diameter part and a smalldiameter part, said large-diameter part being frictionally retained and sliding within said second hollow cylinder with the small-diameter part projecting toward the radial slot of said second cylinder when making the connection to thereby bend and strip the conductors;
  • the slot of said second cylinder being adapted to receive two insulated electrical conductors next to each other so that, upon applying pressure to move said piston within said second cylinder, the top of the smaller diameter part is brought against the two wires and bends the wires at right angles relative to the remaining lengths of said two wires behind the bent portions, said bending forming a rectangular and triangular-shaped crimp in the wire while tearing the insulation.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Multi-Conductor Connections (AREA)
  • Insulated Conductors (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
US20325A 1969-03-20 1970-03-17 Device for rapidly interconnecting two insulated electrical conductors Expired - Lifetime US3614294A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6908037A FR2038617A5 (enrdf_load_stackoverflow) 1969-03-20 1969-03-20

Publications (1)

Publication Number Publication Date
US3614294A true US3614294A (en) 1971-10-19

Family

ID=9030953

Family Applications (1)

Application Number Title Priority Date Filing Date
US20325A Expired - Lifetime US3614294A (en) 1969-03-20 1970-03-17 Device for rapidly interconnecting two insulated electrical conductors

Country Status (4)

Country Link
US (1) US3614294A (enrdf_load_stackoverflow)
DE (1) DE2012594B2 (enrdf_load_stackoverflow)
FR (1) FR2038617A5 (enrdf_load_stackoverflow)
GB (1) GB1242377A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883804A (en) * 1973-04-16 1975-05-13 Dare Products Inc Electrical fence-tester having a plurality of connectors for connecting the tester components
US3983312A (en) * 1970-09-23 1976-09-28 Faulconer Harry A Electrical wire connector
US4049334A (en) * 1976-01-28 1977-09-20 Raychem Corporation Wire preparation and termination means and method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3040150A (en) * 1958-09-05 1962-06-19 Hamilton Watch Co Watch contact post
US3129048A (en) * 1961-06-15 1964-04-14 Frederick J Broch Electrical connector
US3221096A (en) * 1963-01-28 1965-11-30 Thomas & Betts Corp Electrical splicer block for ribbon type cables
US3443683A (en) * 1968-04-17 1969-05-13 Amp Inc Package facilitating assembly of connector elements onto cable

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3040150A (en) * 1958-09-05 1962-06-19 Hamilton Watch Co Watch contact post
US3129048A (en) * 1961-06-15 1964-04-14 Frederick J Broch Electrical connector
US3221096A (en) * 1963-01-28 1965-11-30 Thomas & Betts Corp Electrical splicer block for ribbon type cables
US3443683A (en) * 1968-04-17 1969-05-13 Amp Inc Package facilitating assembly of connector elements onto cable

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983312A (en) * 1970-09-23 1976-09-28 Faulconer Harry A Electrical wire connector
US3883804A (en) * 1973-04-16 1975-05-13 Dare Products Inc Electrical fence-tester having a plurality of connectors for connecting the tester components
US4049334A (en) * 1976-01-28 1977-09-20 Raychem Corporation Wire preparation and termination means and method

Also Published As

Publication number Publication date
FR2038617A5 (enrdf_load_stackoverflow) 1971-01-08
DE2012594B2 (de) 1971-06-16
DE2012594A1 (de) 1970-12-17
GB1242377A (en) 1971-08-11

Similar Documents

Publication Publication Date Title
US5685072A (en) Cable clamp apparatus and method
US1706005A (en) Method of making cord tips
US3320354A (en) Insulation piercing electrical connection
US5393932A (en) Wire connector
US2429585A (en) Pressed insulated connector
US4492815A (en) Shielded jacketed flat cable and grounding clip for use therewith
US3891293A (en) Flat cable terminating
US4897040A (en) Cutting and clamp sleeve contact and method of connecting insulated electrical wire conductors
US5369225A (en) Wire connector
US3826861A (en) Terminal connectors for insulated conductors
US3394454A (en) Methods of making insulationpenetrating clip-type electrical connectors
JPH0432509B2 (enrdf_load_stackoverflow)
US4179964A (en) Ribbon cable splitting device
US3436820A (en) Method of making electrical connections
EP0626101B1 (en) Wire connector
US3614294A (en) Device for rapidly interconnecting two insulated electrical conductors
US3662089A (en) Modifications of wire connectors
GB1522326A (en) Electrical connector
US2389255A (en) Connector
JP5229544B2 (ja) 被覆電線の被覆剥き装置
GB801715A (en) Improvements in or relating to electrical terminal assemblies
US3350679A (en) Electrical connections
JPS5246488A (en) Electric connector
US3405385A (en) Quick connect solderless wire connector
US4725247A (en) Cable splicing assembly