EP1407518A1 - Cord clamp - Google Patents

Cord clamp

Info

Publication number
EP1407518A1
EP1407518A1 EP02751315A EP02751315A EP1407518A1 EP 1407518 A1 EP1407518 A1 EP 1407518A1 EP 02751315 A EP02751315 A EP 02751315A EP 02751315 A EP02751315 A EP 02751315A EP 1407518 A1 EP1407518 A1 EP 1407518A1
Authority
EP
European Patent Office
Prior art keywords
cable
path
steps
ridges
grip
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Withdrawn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
EP02751315A
Other languages
German (de)
English (en)
French (fr)
Inventor
Dunford Carl
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.)
Eaton Electric Ltd
Original Assignee
Delta Electrical Ltd
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 GB0117656A external-priority patent/GB2377826B/en
Application filed by Delta Electrical Ltd filed Critical Delta Electrical Ltd
Publication of EP1407518A1 publication Critical patent/EP1407518A1/en
Withdrawn legal-status Critical Current

Links

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
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/585—Grip increasing with strain force
    • 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
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/5841—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable allowing different orientations of the cable with respect to the coupling direction
    • 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
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/595—Bolts operating in a direction transverse to the cable or wire

Definitions

  • This invention relates to electrical cable or cord grip devices for mains plugs, sockets, or other electrical appliances, and in particular, to a clamping device which is capable of securely gripping cables of different diameters.
  • the present invention seeks to provide a cord grip which is capable of securely clamping cables having a wide range of diameters, whilst still allowing them to be easily inserted into the plug for assembly purposes.
  • the present invention provides a cord grip for an electrical appliance comprising a cable entry path having a first, fixed abutment member on one side of the path, and a second, flexible arm member on the opposite side of the path, which is provided with an adjustable clamping means, to urge it in a direction towards the fixed member, so as to clamp a cable between them.
  • the flexible member comprises an arm which extends generally parallel to the path of the cable, and has one end fixed in the appliance, whilst the other end is free, but can be engaged by a clamping screw, to urge it towards the fixed member.
  • the fixed member has a ridged or stepped surface, with the ridges extending at right angles to the path of the cable, whilst the flexible member has a ridged or stepped surface on which the ridges or steps extend parallel to the path of the cable In the way, it is possible to ensure that the cable is not only held securely against being pulled directly out of the plug or appliance, or pushed in, but is also secured against twisting, which could otherwise cause the conductors to become detached from their terminals
  • the ridges may be provided on the flexible member and the steps on the fixed member, or one or both members may carry an arrangement of steps each of which has a surface which is also transversely ridged
  • Figures 1 to 5 are examples of various known types of electrical cord grips
  • Figure 6 is a plan view of a cord grip arrangement according to the present invention
  • Figure 7 is a cross-section taken on the line A-A of Figure 6
  • Figure 8 is a perspective view of the cord grip of Figure 6 and 7
  • Figure 9 is a partial perspective view of an alternative embodiment of the invention
  • Figures 1 to 5 are diagrammatic views of various known types of cord grip designs, it will be seen that these generally fall into two categories the types shown in Figures 1 and 2, in which the cable is clamped into position by means of screws, and the type shown in Figures 3 to 5, in which the clamping effect depends on resilient arms of various configurations
  • screws 2 and 4 as shown in Figure 1 are used to tighten a semi-rigid bar 6 down onto the cable 8, to clamp it into the entry channel, while Figure 2 shows an arrangement with a single clamping screw 10 which carries an enlarged head 12, to bear directly on the cable
  • the cable is typically held in position by means of shaped flexible arms 14, 16 having ridged surfaces 18, 20 These engage the cable in such a way that any attempt to pull the cable
  • cord grips of the first type including screws
  • cord grips of the second type have the advantage that they hold the cable very securely
  • assembly is simpler but, generally speaking, the cable is then not quite so well secured
  • the cord grip of the present invention combines the ease of assembly of a "flexible arm” type of clamp, with the security of a screw fixing clamp
  • a fixed abutment member 30 is fitted on one side of the cable entry path, and has a ridged surface 32 facing the adjacent side of the cable 34 The ridges extend at right angles to the direction of the cable entry path, so as to resist any tendency for the cable to be pulled out of the appliance
  • a flexible arm 36 extends generally parallel to the path of the cable, with its inner end 38 fixed to the interior of the appliance
  • a clamping screw 40 is threaded into a fixed mounting block 42 in the appliance, and its inner end 44 bears against the outer end of arm 36, so that when the screw is tightened, the outer end of the arm moves to the dashed position 46 indicated in Figure 6, where it engages the side of the cable
  • the facing surface 48 of the arm 36 carries a stepped formation, with the steps extending parallel to the cable direction, so that when the arm is moved to the engaged position as shown in Figure 6, the upper edge 50 overlaps the cable somewhat, so that the cable is held firmly in position against the opposing ridged surface 32.
  • the exemplary embodiments show the arm 36 as extending outwardly relative to the cable entry, it could alternatively extend inwardly.

Landscapes

  • Installation Of Indoor Wiring (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Insertion, Bundling And Securing Of Wires For Electric Apparatuses (AREA)
EP02751315A 2001-07-19 2002-07-16 Cord clamp Withdrawn EP1407518A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0117656 2001-07-19
GB0117656A GB2377826B (en) 2000-07-18 2001-07-19 Cord clamp
PCT/GB2002/003266 WO2003009428A1 (en) 2001-07-19 2002-07-16 Cord clamp

Publications (1)

Publication Number Publication Date
EP1407518A1 true EP1407518A1 (en) 2004-04-14

Family

ID=9918833

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02751315A Withdrawn EP1407518A1 (en) 2001-07-19 2002-07-16 Cord clamp

Country Status (5)

Country Link
EP (1) EP1407518A1 (zh)
CN (1) CN100536247C (zh)
BG (1) BG65730B1 (zh)
WO (1) WO2003009428A1 (zh)
ZA (1) ZA200401039B (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1835666B (zh) * 2006-02-20 2010-06-30 常熟市天银机电有限公司 电器装置的压线卡
CN101179183B (zh) * 2006-11-08 2010-05-26 鸿富锦精密工业（深圳）有限公司 线夹
CN104659634B (zh) * 2013-11-25 2017-11-21 珠海格力电器股份有限公司 耦合器与电源线自动拔插的装置
LU93198B1 (de) * 2016-09-06 2018-04-05 Phoenix Contact E Mobility Gmbh Steckverbinderteil mit einer Zugentlastung
JP6689469B1 (ja) * 2019-04-10 2020-04-28 三菱電機株式会社 電磁接触器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2432234A1 (fr) * 1978-07-26 1980-02-22 Legrand Sa Appareil electrique a serre-cable
GB2193389A (en) * 1985-07-24 1988-02-03 Meritlink Ltd Cable clamp
US5052643A (en) * 1990-03-26 1991-10-01 Heyco Molded Products, Inc. Screw and screw releasable strain relief bushing with a non-fall out screw
GB2366920B (en) * 2000-07-18 2004-09-08 Delta Electrical Ltd Cord clamp

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03009428A1 *

Also Published As

Publication number Publication date
WO2003009428A1 (en) 2003-01-30
BG108580A (en) 2005-03-31
CN100536247C (zh) 2009-09-02
BG65730B1 (bg) 2009-08-31
CN1543695A (zh) 2004-11-03
ZA200401039B (en) 2005-05-30

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20040127

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: EATON ELECTRIC LIMITED

17Q First examination report despatched

Effective date: 20100217

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20100629