GB2459000A - Preparing a wire for an electrical plug - Google Patents

Preparing a wire for an electrical plug Download PDF

Info

Publication number
GB2459000A
GB2459000A GB0822975A GB0822975A GB2459000A GB 2459000 A GB2459000 A GB 2459000A GB 0822975 A GB0822975 A GB 0822975A GB 0822975 A GB0822975 A GB 0822975A GB 2459000 A GB2459000 A GB 2459000A
Authority
GB
United Kingdom
Prior art keywords
wire
blade
preparation device
pair
plug
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
GB0822975A
Other versions
GB0822975D0 (en
GB2459000B (en
Inventor
David Alexander Duff
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
Publication of GB0822975D0 publication Critical patent/GB0822975D0/en
Publication of GB2459000A publication Critical patent/GB2459000A/en
Application granted granted Critical
Publication of GB2459000B publication Critical patent/GB2459000B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • B25B11/02—Assembly jigs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/28—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for wire processing before connecting to contact members, not provided for in groups H01R43/02 - H01R43/26
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/005—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for cutting cables or wires, or splicing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/12—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof
    • H02G1/1202—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof by cutting and withdrawing insulation
    • H02G1/1204—Hand-held tools
    • H02G1/1207—Hand-held tools the cutting element not rotating about the wire or cable
    • H02G1/1209—Hand-held tools the cutting element not rotating about the wire or cable making a transverse cut
    • H02G1/1212—Hand-held tools the cutting element not rotating about the wire or cable making a transverse cut using wire or cable clamping means

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Removal Of Insulation Or Armoring From Wires Or Cables (AREA)

Abstract

A wire preparation device for preparing wires for connection within an electrical plug comprises a wire stop 17a, 17b and cutting means spaced from the wire stop by a distancesubstantially corresponding to the spacing of terminals of the plug from a cable holder of the plug. The cutting means may include three blades 14a, 15a and 16a to cut three wires to the correct length, and three further notched blades 14b, 15b and 16b to remove the insulation from the end of these wires. Plates 19a, 19b, 19c push the wires against these cutters when the device is closed. Accordingly, the device is arranged to cut wires of a cable to a length suitable for extending to the respective terminal of the plug.

Description

Wire Preparation Device The present invention relates to a wire preparation device and particularly, but not exclusively to a wire preparation device for preparing a wire for connection within an electrical plug.
In order to suitably wire an electrical plug to an electrical cable it is first necessary to prepare the cable. This is achieved by firstly removing an outer sheath of cable insulation to expose a number of inner wires. It is necessary to subsequently prepare each wire by first cutting the wire to the appropriate length and then exposing a core of each wire by removing an outer sheath of wire insulation.
The removal of the insulation from around each wire is often difficult to achieve as it is easy to cut the wire core while attempting to only cut the insulation. In anticipation of this problem, it is found that the wires are often cut to a length which exceeds that required for connection within a plug. In any event, it is often difficult to estimate the length of each wire that is required to suitably extend to respective wire connections within a plug.
When wiring a 3-pin British plug for example, it is necessary to suitably prepare a live, neutral and earth wire for connection to a live, neutral and earth pin respectively, of the plug. In the event that the cable is pulled or otherwise removed from the plug unexpectedly, then in order to suitably insulate the plug, it is necessary that the earth connection is the last to be removed. If the live and neutral wires are excessively long, then it is possible that the earth wire will be removed before the live or neutral wires, which could compromise the safety of the plug.
I have now devised a wire preparation device which alleviates the above-mentioned problems.
In accordance with the present invention as seen from a third aspect, there is provided a wire preparation device for preparing wires for connection within an electrical plug, the device comprising cutting means spaced upon the device from a wire stop by a distance substantially corresponding to the spacing of terminals of the plug with which the wires are to be connected, from a cable holder of the plug, such that the device is arranged to cut wires of a cable to a length suitable for extending to the respective terminal of the plug.
Preferably, the cutting means is further arranged to remove a section of an outer sheath of insulation of each wire to expose a wire core.
The cutting means preferably comprises at least one pair of cutting blades disposed with a blade holder and means for pressing a wire onto the at least one pair of cutting blades.
Preferably, the at least one pair of cutting blades comprises a first blade and second blade.
The first blade is preferably arranged to cut a wire core and an insulating sheath that surrounds the core, whereas the second blade is preferably arranged to only cut the insulating sheath.
The cutting portion of the second blade preferably comprises a cutting notch for receiving the wire such that upon pressing a wire onto the first and second blades, the wire is further pressed onto a cutting portion of the first blade than onto a cutting portion of the second blade.
Preferably, the first blade and the second blade are spaced longitudinally of the wire.
Preferably, the second blade of the at least one pair of cutting blades is disposed longitudinally of the wire between the wire stop and the first blade.
The means for pressing the wire against the at least one pair of cutting blades preferably comprises at least one plate. The plate is preferably disposed within a plate holder that is hingedly coupled to the blade holder such that the plate holder can rotate about the coupling to move the plate substantially adjacent the at least one pair of cutting blades.
Preferably, the preparation device comprises three pairs of cutting blades disposed within the blade holder, each pair comprising a first blade and a second blade.
Preferably, the pairs of cutting blades are arranged in a predefined arrangement within the blade holder.
The means for pressing a wire preferably comprises three plates disposed within the plate holder in the predefined arrangement.
The predefined arrangement preferably corresponds with an arrangement of electrical terminals within an electrical plug, for example a Type G or British 3-pin mains electrical plug.
Preferably, the spacing of the first blade of a first pair of cutting blades from the wire stop substantially corresponds to the spacing of a neutral terminal within an electrical plug, from the cable holder of the plug.
Preferably, the spacing of the first blade of a second pair of cutting blades from the wire stop substantially corresponds to the spacing of a live terminal within an electrical plug, from the cable holder of the plug.
Preferably, the spacing of the first blade of a third pair of cutting blades from the wire stop substantially corresponds to the spacing of an earth terminal within an electrical plug, from the cable holder of the plug.
Preferably, the spacing of the first blade of the third pair of cutting blades from the wire stop, is greater than the spacing of the first blade of either of the first or second pair of cutting blades from the wire stop.
In accordance with the present invention as seen from a second aspect, there is provided a method of preparing wires of an electrical cable for connection with an electrical plug, the method comprising the use of a wire preparation device of the first aspect, the method comprising the steps of: 1. arranging the cable upon the wire preparation device such that the wires extend over the cutting means; and 2. cutting the wires using the cutting means.
Preferably, the preparation of the wires is actuated by pulling the cable from the device.
An embodiment of the present invention will now be described by way of example only and with reference to the accompanying drawings, in which: Figure 1 is a plan view of the wire preparation device according to an embodiment of the present invention; Figure 2 is a plan view of the wire preparation device of figure 1 with an electrical cable suitably positioned for cutting within the device; and, Figure 3 is a schematic illustration of the electrical cable of figure 2 after the wires have been cut using the preparation device and after the cable has been suitably removed from the preparation device.
Referring to figure 1 of the drawings there is shown a wire preparation device 10 according to an embodiment of the present invention. The preparation device comprises a blade holder 11 and a plate holder 12 that are hingedly coupled via a hinge 13 and which may be formed of a rigid plastic material, for example.
The blade holder 11 comprises three pairs of cutting blades 14, 15, 16 arranged within the holder 11 in an arrangement substantially corresponding with the arrangement of electrical contact pins within a Type G or 3-pin mains electrical plug (not shown). The skilled reader will appreciate however, that other arrangements of the cutting blades 14, 15, 16 which match other arrangements of pins within different plugs or electrical connectors, may also be used. The pairs of cutting blades 14, 15, 16 are spaced from each other and from a cable stop 17 that is also arranged upon the blade holder 11, by an amount that substantially corresponds to the spacing between the pins within a Type G plug and between the pins and a cable holder (not shown) on the plug, respectively. The stop 17 may comprise a first 17a and second wall 17b for example, that are spaced apart by an amount which enables inner wires 20 of a cable 21 to pass through but which prevents the cable 21 from passing.
The plate holder 12 comprises three plates 19a-c arranged within the holder in an arrangement which substantially matches the arrangement of the pairs of cutting blades 14, 15, 16 within the blade holder 11. Accordingly, as the plate holder 12 is rotated about the hinge 13, the plates 19a-c are separately arranged to move into a position that is substantially opposite a pair of cutting blades 14, 15, 16. However, it is also envisaged that a single plate (not shown) arranged upon the plate holder 12 that is sized to substantially cover each pair of cutting blades 14, 15, 16, would also suffice.
Each pair of cutting blades 14, 15, 16 arranged within the blade holder 11 comprises a first blade 14a, iSa, 16a and a second blade 14b, 15b, 16b, which extend away from the holder 11 substantially perpendicularly thereto, and which are arranged substantially opposite each other in a parallel arrangement. The first blade 14a, iSa, 16a of each pair 14, 15, 16 is arranged furthest from the cable stop 17, while the second blade 14b, 15b, 16b of each pair 14, 15, 16 is arranged between the first blade 14a, 15a, 16a of the pair and the cable stop 17. Each pair of cutting blades 14, 15, 16 is separately arranged to cut a live 20a, neutral 20b and earth wire 20c respectively, of a cable 21 that is to be connected to a Type G electrical plug (not shown).
The first blade 14a, iSa, 16a of each pair of cutting blades 14, 15, 16 comprises a cutting portion (not shown) arranged on an upper edge thereof. The second blade 14b, 15b, 16b of each pair comprises a cutting portion that is notched into the upper edge of the respective blade to form a substantially V-shape cutting portion 22.
In use, a user (not shown) removes a section of an outer insulation sheath 23 of a cable 21 to expose the live 20a, neutral 20b and earth cable 20c held within. The user then separately places the live 20a, neutral 20b and earth wire 20c over the respective pair of cutting blades 14, 15, 16 that are located at positions upon the holder 11 that correspond to the position of the live, neutral and earth pins within a Type G electrical plug (not shown). To help the user, it is envisaged that those regions of the blade holder 11 comprising the pairs of cutting blades 14, 15, 16 may be coloured to match the colour of the wire 20a-c to be cut thereon.
The user subsequently rotates the plate holder 12 about the hinge 13 to cause the plates 19a-c within the plate holder 12 to move into abutment with the wires 20a-c positioned over the pairs of cutting blades 14, 15, 16. As the user compresses the plate holder 12 and the blade holder ii together, the first blade 14a, 15a, 16a of each pair of cutting blades 14, 15, 16 becomes forced toward the adjacent plate 19a-c and thus cuts through the respective wire 20a-c. The first blade 14a, iSa, 16a thus serves to cut the wire 20a-c to the appropriate length with respect to the wire stop 17, for connection with the appropriate pin (not shown) within the plug (not shown). The notch 22a-c in the second blade 14b, 15b, 16b of each pair of blades is sized so that the wires 20a-c becomes compressed within the respective notch 22a-c by the respective plate 19a-c, but are not completely cut by the blade 14b, 15b, 16b. The cutting edge (not shown) within the notch 22a-c serves to partially cut an insulation sheath 24a-c surrounding the respective wire core 25a-c.
While holding the blade holder 11 and plate holder 12 firmly compressed together, the user then pulls on the cable 21. This movement causes the insulation sheath 24a-c on each wire 20a-c that is held between the first 14a, 15a, 16a and second blades 14b, 15b, 16b of each pair, to move off a core 25a-c of the wire 20a-c to expose the core 25a-c. The length of the core 25a-c exposed corresponds substantially with the separation of the first 14a, 15a, 16a and second blade 14b, 15b, 16b of the respective pair of blades 14, 15, 16.
The wire preparation device thus serves to cut the live, neutral and earth wires of a cable to a suitable length for connection within a Type G plug. In addition, the preparation device suitably removes a section of the insulation sheath at the end of each wire to enable an electrical connection to be made between the wire and the respective pin of the plug.

Claims (20)

  1. Claims 1. A wire preparation device for preparing wires for connection within an electrical plug, the device comprising cutting means spaced upon the device from a wire stop by a distance substantially corresponding to the spacing of terminals of the plug with which the wires are to be connected, from a cable holder of the plug, such that the device is arranged to cut wires of a cable to a length suitable for extending to the respective terminal of the plug.
  2. 2. A wire preparation device according to claim 1, wherein the cutting means is further arranged to remove a section of an outer sheath of insulation of each wire to expose a wire core.
  3. 3. A wire preparation device according to claim 1 or 2, wherein the cutting means comprises at least one pair of cutting blades disposed within a blade holder and means for pressing a wire onto the at least one pair of cutting blades.
  4. 4. A wire preparation device according to claim 3, wherein the at least one pair of cutting blades comprises a first blade and second blade.
  5. 5. A wire preparation device according to claim 4, wherein the first blade is arranged to cut a wire core and an insulating sheath that surrounds the core, whereas the second blade is arranged to only cut the insulating sheath.
  6. 6. A wire preparation device according to claim 4 or 5, wherein a cutting portion of the second blade comprises a cutting notch for receiving the wire such that upon pressing a wire onto the first and second blades, the wire is further pressed onto a cutting portion of the first blade than onto the cutting portion of the second blade.
  7. 7. A wire preparation device according to any of claims 3 to 6, wherein the first blade and the second blade are spaced longitudinally of the wire.
  8. 8. A wire preparation device according to claim 7, wherein the second blade of the at least one pair of cutting blades is disposed longitudinally of the wire between the wire stop and the first blade.
  9. 9. A wire preparation device according to any of claims 3 to 8, wherein the means for pressing the wire against the at least one pair of cutting blades comprises at least one plate.
  10. 10. A wire preparation device according to claim 9, wherein the plate is disposed within a plate holder that is hingedly coupled to the blade holder such that the plate holder can rotate about the coupling to move the plate substantially adjacent the at least one pair of cutting blades.
  11. 11. A wire preparation device according to any of claims 3 to 10, wherein the preparation device comprises three pairs of cutting blades disposed within the blade holder, each pair comprising a first blade and a second blade.
  12. 12. A wire preparation device according to claim 11, wherein the pairs of cutting blades are arranged in a predefined arrangement within the blade holder.
  13. 13. A wire preparation device according to claim 12, wherein the means for pressing a wire comprises three plates disposed within a plate holder in the predefined arrangement.
  14. 14. A wire preparation device according to claim 12 or 13, wherein the predefined arrangement corresponds with an arrangement of electrical terminals within an electrical plug, for example a Type G or British 3-pin mains electrical plug.
  15. 15. A wire preparation device according to any of claims 11 to 14, wherein the spacing of the first blade of a first pair of cutting blades from the wire stop substantially corresponds to the spacing of a neutral terminal within an electrical plug, from the cable holder of the plug.
  16. 16. A wire preparation device according to any of claims 11 to 14, wherein the spacing of the first blade of a second pair of cutting blades from the wire stop substantially corresponds to the spacing of a live terminal within an electrical plug, from the cable holder of the plug.
  17. 17. A wire preparation device according to any of claims 11 to 14, wherein the spacing of the first blade of a third pair of cutting blades from the wire stop substantially corresponds to the spacing of an earth terminal within an electrical plug, from the cable holder of the plug.
  18. 18. A wire preparation device according to claims 15 to 17, wherein the spacing of the first blade of the third pair of cutting blades from the wire stop, is greater than the spacing of the first blade of either of the first or second pair of cutting blades from the wire stop.
  19. 19. A method of preparing wires of an electrical cable for connection with an electrical plug, the method comprising the use of a wire preparation device of the first aspect, the method comprising the steps of: 1. arranging the cable upon the wire preparation device such that the wires extend over the cutting means; and 2. cutting the wires using the cutting means.
  20. 20. A method according to claim 19, wherein the preparation of the wires is actuated by pulling the cable from the device.
GB0822975.9A 2008-04-12 2008-12-17 Wire preparation device Expired - Fee Related GB2459000B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0806716A GB2459138A (en) 2008-04-12 2008-04-12 Wire preparation device

Publications (3)

Publication Number Publication Date
GB0822975D0 GB0822975D0 (en) 2009-01-21
GB2459000A true GB2459000A (en) 2009-10-14
GB2459000B GB2459000B (en) 2012-01-18

Family

ID=39433584

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0806716A Withdrawn GB2459138A (en) 2008-04-12 2008-04-12 Wire preparation device
GB0822975.9A Expired - Fee Related GB2459000B (en) 2008-04-12 2008-12-17 Wire preparation device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0806716A Withdrawn GB2459138A (en) 2008-04-12 2008-04-12 Wire preparation device

Country Status (1)

Country Link
GB (2) GB2459138A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4196510A (en) * 1978-09-25 1980-04-08 Artos Engineering Company Apparatus and method for production of wire leads
US6242699B1 (en) * 1999-03-18 2001-06-05 Alcatel Apparatus for processing the end of a coaxial high frequency cable

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2069247B (en) * 1979-06-18 1984-02-29 Barnes M G Electrical plugs
AU6192086A (en) * 1985-08-09 1987-03-05 Hugh Heathcote Gilbert Improvements in electrical plugs
GB9008682D0 (en) * 1990-04-18 1990-06-13 Rotacon Ltd Improved wire stripper
GB2284056A (en) * 1993-11-16 1995-05-24 John Henderson An electrical plug wiring jig
DE50303961D1 (en) * 2003-08-14 2006-08-03 Krampe Kg Stripping tool Uniplus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4196510A (en) * 1978-09-25 1980-04-08 Artos Engineering Company Apparatus and method for production of wire leads
US6242699B1 (en) * 1999-03-18 2001-06-05 Alcatel Apparatus for processing the end of a coaxial high frequency cable

Also Published As

Publication number Publication date
GB0822975D0 (en) 2009-01-21
GB2459000B (en) 2012-01-18
GB2459138A (en) 2009-10-14
GB0806716D0 (en) 2008-05-14

Similar Documents

Publication Publication Date Title
US4075758A (en) Method for terminating sheath covered cable and for providing a wiring system
US7144269B2 (en) Hinged electrical connector for insulated cable
AU2010246491B2 (en) Electrical connector
US7186132B2 (en) Electrical and electronic connector with blade closed by lever
AU2005236529A1 (en) A cap, a termination assembly and a housing assembly for a modular telecom connection jack
EP1769566B1 (en) Device for electrical connection of discontinuous conductors
CN105229860B (en) Power cable embedded-type electric supply socket
NO983289L (en) Stripping for stripping during cord fitting
CN110679042A (en) Wire-to-wire connector with shunt
CZ286587B6 (en) Connecting terminal for electrical conductors
US4976631A (en) Station bar
AU2020289801A1 (en) Patch panel arrangments, cable terminating devices & methods
GB2459000A (en) Preparing a wire for an electrical plug
US20180366840A1 (en) Insulation-displacement connection tool and insulation-displacement terminal
US8734180B2 (en) Connecting terminal with cutting means for an electric line
US20140027143A1 (en) Electrical Box Insert Device
US6351365B1 (en) Electrical wiring device and method
US4861279A (en) Electrical apparatus to be directly coupled to sheathed cable and to wall structures
US7040915B1 (en) Insulation displacement electrical plug assembly and method of making plug assembly
CN102427197A (en) Covered wire connector
AU2019101048A4 (en) An electrical connector
CN107408788A (en) Electrical equipment with terminal and wire stripping seat
CN101361242A (en) Wire stripping blades and associated tool
GB2086149A (en) Electrical fittings
GB2274210A (en) Electrical fitting or plug with casing joint, i.d.c. contact and cable clamp/stripper

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20141217