EP0739055A1 - Device for locking connecting means, in particular of welding machines - Google Patents

Device for locking connecting means, in particular of welding machines Download PDF

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Publication number
EP0739055A1
EP0739055A1 EP96106111A EP96106111A EP0739055A1 EP 0739055 A1 EP0739055 A1 EP 0739055A1 EP 96106111 A EP96106111 A EP 96106111A EP 96106111 A EP96106111 A EP 96106111A EP 0739055 A1 EP0739055 A1 EP 0739055A1
Authority
EP
European Patent Office
Prior art keywords
ring
nut
nut ring
extension
rotation
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.)
Withdrawn
Application number
EP96106111A
Other languages
German (de)
English (en)
French (fr)
Inventor
Raffaele Mongiorgi
Roberto Albertini
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 EP0739055A1 publication Critical patent/EP0739055A1/en
Withdrawn legal-status Critical Current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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/622—Screw-ring or screw-casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/621—Bolt, set screw or screw clamp
    • H01R13/6215—Bolt, set screw or screw clamp using one or more bolts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
    • H01R13/6395—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap for wall or panel outlets

Definitions

  • the present invention relates to locking of connecting means, in particular of welding machines.
  • this cable features a connecting member equipped with a plug that is engaged with a socket of the generator.
  • the connecting member usually includes a tubular body, with which the plug is made integral; a ring nut, is rotatably mounted on this body for screw engagement with a threaded projection of the generator socket, so as to fasten the connecting member to the socket.
  • the ring nut is screwed onto the threaded projection of the socket after the plug of the connecting member has been plugged into the same socket; coupling between the nut ring and the threaded projection of the socket prevents the connecting member from being detached therefrom. Conversely, in order to free this connecting member, it is necessary to release first the nut ring that locks the connecting member to the generator socket.
  • the object of the present invention is to propose a device for locking connecting means that allows to comply with the security regulations in a simple and effective way.
  • the locking device 1 of a connecting member 2 serves for connection of the torch of a welding machine with a respective electric generator 3.
  • the connecting member 2 features, in accordance with a known technique, a tubular body 4 with an electric cable 5 passing therethrough and connecting it with the torch, not shown.
  • a plug 7, integral with a head 6 of the tubular body 4, is designed for screw engagement with a socket 8 of the generator 3; the plug 7 is connected with the cable 5 for electric feeding of the torch.
  • the socket 8 features a threaded projection 9, provided for engagement with the locking device 1.
  • the locking device 1 includes nut ring 10 rotatably mounted on the connecting means 2, in correspondence with the head 6; at its front, the nut ring 10 features a threaded portion 11 for screw engagement with the threaded projection 9 of the socket 8.
  • a ring 12 surrounding and sliding on the nut ring 10, is fixed axially thereto.
  • This extension 14 follows an annular cam profile 15 made on the outer circumference surface of the nut ring 10.
  • the cam profile 15 has enlarged recesses 16,17 for rotation of the extension 14 of the pin 13 until it takes a position transversal to the same cam profile 15, respectively in the positions of screwing and unscrewing of the nut ring 10, that is in the positions of locking and unlocking of the device.
  • These enlarged recesses 16,17 feature symmetrically a bottom shoulder 16a,17a, against which the extension 14 of the pin 13 is to strike in the above mentioned positions; and inclined tracks 16b,17b on which the same extension 14 slides during the reverse rotation.
  • the pin 13 is rotated by a traditional socket head screw 21 or another tool performing the same function, aimed at engaging a hexagonal or another hole 22 made axially with respect to the pin 13.
  • the ring 12 can freely rotate, in two directions, on the nut ring 10 and therefore, neither unscrewing nor further screwing takes place.
  • the pointer 20 of the ring 12 is in alignment with the notch 19 of the nut ring 10. It is to be noted that the notches 18, 19 have a double pointer, so as to indicate initial and the final positions of the rotating pin 13.
  • the locking device subject of the present invention, fulfils the object of complying, in a simple and effective way, with the security regulations concerning connecting means used for feeding of welding machines.
  • the coupling of the torch connecting member 2 with the electric generator 3 is controlled by a previous enabling operation, i.e. by rotation of the pin 13 to place it in the connecting position, this rotation being performed activated by means of the tool 21 or another tool performing the same function.
  • Figures from 7 to 10 illustrate a different embodiment of the subject locking device, in which the ring 12, rotatably mounted on the nut ring 12 features, on two transversal plans suitably spaced apart, a couple of radial holes 23, suitably staggered angularly, at e.g. 90°.
  • the nut ring 10 has respective cams 24, formed by a groove extending substantially through an arc of 90° and having a variable depth, increasing according to opposite directions, so as to define a relative stop 25 at one end.
  • the holes 23 and the relative cams 24 allow screwing and unscrewing, respectively, of the nut ring 10.
  • Figures from 11 to 14 show another embodiment of the locking device, in which the ring 12 is mounted on the nut ring 10 in such a way as to slide axially thereon.
  • the nut ring 10 and the ring 12 feature respective additional saw-toothed profiles 27, 28, that face each other for frontal mesh engagement one into the other.
  • the ring 12 is axially pressed by a helical spring 29, housed in a recess defined by the nut ring 10 and stopping against a shoulder formed by the rear part of the same nut ring 10; the spring 29 is designed to elastically maintain the toothed profiles 27,28 of the nut ring 10 and the ring 12 in insertion position.
  • the subject device allows to lock the connecting member of the torch to the electric generator in the welding machines, in a simple and quick way, in compliance with the security regulations.

Landscapes

  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
EP96106111A 1995-04-21 1996-04-18 Device for locking connecting means, in particular of welding machines Withdrawn EP0739055A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT95BO000181A IT1281777B1 (it) 1995-04-21 1995-04-21 Dispositivo per il bloccaggio di organi di connessione, in particolare per apparecchi di saldatura
ITBO950181 1995-04-21

Publications (1)

Publication Number Publication Date
EP0739055A1 true EP0739055A1 (en) 1996-10-23

Family

ID=11340546

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96106111A Withdrawn EP0739055A1 (en) 1995-04-21 1996-04-18 Device for locking connecting means, in particular of welding machines

Country Status (2)

Country Link
EP (1) EP0739055A1 (it)
IT (1) IT1281777B1 (it)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0923177A2 (de) * 1997-12-13 1999-06-16 PHOENIX CONTACT GmbH & Co. Kabeleinführung mit Überwurfmutter
WO2014193598A1 (en) * 2013-05-29 2014-12-04 Illinois Tool Works Inc. Hand-turnable welding cable connection

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2136500A1 (de) * 1971-07-21 1973-02-01 Siemens Ag Hf-koaxialsteckverbindung
FR2448794A1 (fr) * 1979-02-06 1980-09-05 Bunker Ramo Connecteur electrique en deux parties accouplees par vissage

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2136500A1 (de) * 1971-07-21 1973-02-01 Siemens Ag Hf-koaxialsteckverbindung
FR2448794A1 (fr) * 1979-02-06 1980-09-05 Bunker Ramo Connecteur electrique en deux parties accouplees par vissage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0923177A2 (de) * 1997-12-13 1999-06-16 PHOENIX CONTACT GmbH & Co. Kabeleinführung mit Überwurfmutter
EP0923177A3 (de) * 1997-12-13 2001-01-10 PHOENIX CONTACT GmbH & Co. Kabeleinführung mit Überwurfmutter
WO2014193598A1 (en) * 2013-05-29 2014-12-04 Illinois Tool Works Inc. Hand-turnable welding cable connection

Also Published As

Publication number Publication date
ITBO950181A0 (it) 1995-04-21
IT1281777B1 (it) 1998-03-03
ITBO950181A1 (it) 1996-10-21

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