EP0326848A2 - Verschluss zum Befestigen einer elektrischen Leitung an einem glockenförmigen Stützkörper und Werkzeug dafür - Google Patents

Verschluss zum Befestigen einer elektrischen Leitung an einem glockenförmigen Stützkörper und Werkzeug dafür Download PDF

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Publication number
EP0326848A2
EP0326848A2 EP89100715A EP89100715A EP0326848A2 EP 0326848 A2 EP0326848 A2 EP 0326848A2 EP 89100715 A EP89100715 A EP 89100715A EP 89100715 A EP89100715 A EP 89100715A EP 0326848 A2 EP0326848 A2 EP 0326848A2
Authority
EP
European Patent Office
Prior art keywords
jaw
walls
clasp
wire
pair
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
EP89100715A
Other languages
English (en)
French (fr)
Other versions
EP0326848B1 (de
EP0326848A3 (de
Inventor
Pierre R. Giroux
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.)
Gbf Securicap Inc
Original Assignee
Gbf Securicap Inc
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 Gbf Securicap Inc filed Critical Gbf Securicap Inc
Publication of EP0326848A2 publication Critical patent/EP0326848A2/de
Publication of EP0326848A3 publication Critical patent/EP0326848A3/de
Application granted granted Critical
Publication of EP0326848B1 publication Critical patent/EP0326848B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/20—Pin insulators
    • H01B17/22—Fastening of conductors to insulator
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53796—Puller or pusher means, contained force multiplying operator
    • Y10T29/5383—Puller or pusher means, contained force multiplying operator having fluid operator

Definitions

  • This invention relates to a clasp for attaching an electrical wire to a pin-type support bucket and to a method for connecting an electrical wire to a pin-type support bucket by means of the clasp.
  • Support buckets are used on utility poles and turrets to prevent the electricity passing through these wires, which is often of very high potential, from being discharged into the ground or into other wires.
  • a conventional pin support bucket is attached to a strut of a post or turret and has an upper saddle portion on which the wire rests.
  • a wire has most often been connected to its support bucket by manually winding and twisting a wire of small diameter around the electric wire and the saddle portion.
  • a first object of the invention is to provide a clasp and a method for attaching a wire to a support bucket, which circumvents the above-mentioned disadvantages.
  • Another object of the present invention is to provide a clasp and a method as described above, which is simple to construct and which comprises simple steps for installing it on a support bucket.
  • Yet another object of the present invention is to provide a clasp as above, which does not cost much to build.
  • a clasp comprising a clamping jaw made of a rigid but foldable material and of a gripping member.
  • the jaw has a flat upper portion and means at each end for firmly gripping the saddle portion of a support bucket, as will be explained.
  • the jaw is intended to be placed directly above the bucket and to be clamped on it.
  • a wire gripping member made of a material deformable under stress, such as a suitable elastomer.
  • the organ consists of a main body portion including an upper surface generally flat. The lower surface of the body portion has an elongated first groove.
  • the two sides of the gripping member are preferably formed of attachment means for attaching the gripping member to the clamping jaw.
  • Both sides of the gripping member additionally have first elongated walls preferably projecting slightly outwards. Each of these first walls merges with the body portion. Second downward facing walls also protrude from the body portion.
  • each second wall has a second elongated groove.
  • the two second walls are deformed inward from their initial configuration into a completely permanent folded configuration, where the three grooves define an opening of circular section, intended to firmly grip an electric wire there.
  • Such deformation of the second walls is assisted by the first initially straight walls which abut against the underside of the clamping jaw.
  • the jaw is rigidly attached to the bucket.
  • the present invention extends to providing for the realization of such an attachment of an electric wire to a saddle portion of a bucket by means of a manual tool connected to an arrangement of mechanical parts intended to perform a series of steps.
  • the mechanical parts comprise a pair of spaced apart legs interconnected by an elongated yoke member, the latter in turn being connected to an expandable jack mechanism.
  • Each leg has first lower hook means intended to grip the lower edge of a support bucket and has, moreover, second means of hook for gripping and lifting an electric wire passing over the saddle portion of the bucket.
  • Pressure means are attached to the expandable cylinder mechanism and intended to push down against the clamping jaw and cause the lifting action of the second hook means and the locking action of the first hook means.
  • FIG. 1 If we first look at Figure 1, we see a typical conventional bucket 1, made from an electrically insulating material, e.g. porcelain.
  • the bucket 1 has a flared lower portion 2, of generally truncated shape, including a pair of concentric base portions 3, 4, the smallest of which is rigidly fixed to a support post 5, the latter in turn being connected to a spacer 6 (as shown in Figure 5) of a utility pole or turret (not shown).
  • the upper portion of the bucket 1 has the general shape of a transverse saddle including a curved central stirrup 7 and projecting parts 8.
  • the saddle is intended to support an elongated electric cable or wire (9).
  • FIGS 1,2 and 4 show a clamping jaw 10 according to the invention. It preferably consists of an aluminum profile sectioned into sections and cut by machine. It includes a flat portion 10 ′ merging with curved portions down 10 ⁇ at its two ends. Each portion 10 ⁇ is folded horizontally inward at its lower end to define a flange 11, having an innermost semi-circular offset 12. The portion 10 ⁇ , the flanges 11, and the offset 12 constitute the means of grip. Each offset 12 has a central notch 12a.
  • the jaw 10 has an elongated outer ridge 13 at the junction of the curved portions 10 ⁇ with the flat portion 10 ′.
  • the inner surface of the jaw 10 comprises a pair of elongated L-shaped flanges, 14, which are closer together than the ridges 13.
  • a wire gripping member, 15, is intended to be used with the jaw 10 in a complementary manner.
  • the member 15 is made of an elastomeric material deformable under stress, essentially partially electrically conductive, such as rubber with a carbon content.
  • the initial shape of the member 15 is preferably formed by an extrusion process after which a piece of desired length can easily be cut.
  • the member 15 has a main body portion 15 ′, the upper surface of which has a pair of transversely spaced L-shaped grooves 16, as clearly shown in Figures 2 and 3.
  • the grooves 16 constitute means of attachment intended to receive the flanges 14, so that the gripping member 15 can be fixed to the clamping jaw 10, as shown.
  • Each groove 16 defines a first contiguous wall 17 projecting outward and angularly.
  • the walls 17 merge with the body portion 15 ′.
  • a pair of second walls 18 merge also with the body portion 15 ′.
  • Each wall 18 is located under each first adjacent wall 17 and generally opposite it.
  • the middle of the lower surface of the body portion 15 ′ is formed by a first elongated groove 19, of a generally semicircular shape in section.
  • the groove 19 is bordered on each side by a V-shaped notch, 19a.
  • the inner lower ends of the two second walls 18 are provided with a second groove 20 whose general shape is the quarter of a circle.
  • the clip 15a of the second embodiment is similar, except in terms of dimensions, including a smaller groove 19 ′ and grooves 20 ′ and a portion of thicker body 15 ⁇ .
  • the two walls 18 are intended to be folded inwards from an initial configuration, shown in FIGS. 2 and 3 , up to a permanent folding installation configuration, as shown in Figures 4 and 4a.
  • the first groove 19 or 19 ′ and the two second grooves 20 or 20 'form an orifice 21, 22, respectively, of circular cross section and of a dimension making it possible to retain a wire 9 by gripping by friction.
  • the wire 9 can of course be of different diameter, as suggested in the figures.
  • the external curvature surface of the exterior of the two second walls 18 is identical to the arc of curvature of the curved stirrup 7 on the two sides of the latter, as shown.
  • FIGS. 5 and 6 show force means consisting of a piston 23 and cylinder with spring return cylinder, which is fixed permanently to a manual handle 24 by means of a universal joint 24a.
  • the handle 24 is held by an operator in the bucket of a truck or the like (not shown).
  • An expansion force such as hydraulic pressure, can be delivered to the jack 23 through a tube passing through or along the handle 24 with control levers thereon.
  • the jack 23 is integral with a horizontal transverse yoke member, 25.
  • Each of the opposite ends of the yoke 25 carries a tab 26 projecting downwards.
  • the lower ends of the legs 26 carry a hook 27 facing inwards, constituting first hook means, as clearly shown in FIG. 5.
  • the hooks 27 are intended to catch the lower edge of the flare or "skirt" 2 of bucket 1.
  • portions 26 ′ folded outwards and transversely and having the lowest hook supports, 28, these constituting second hook means.
  • each tab 26 can be made of an enlarged hollow portion 26 ⁇ .
  • the portions 26 ⁇ are internally threaded so that the upper ends threaded in a manner complementary to the lower portions of the legs 26 can be adjusted in length by screwing such lower portions of the legs into the portions 26 ⁇ . Therefore, the distance between the hooks 27 and 28 of each leg 26 can be adjusted to accommodate different sizes of bucket.
  • the tool is completed by a means of compression comprising a rigid compression plate 29, having a flat intermediate portion 30, which is rigidly fixed to the remote end of the piston rod 31 of the jack, the latter being intended for vertical movement, as suggested by the arrows 32 in Figure 6.
  • a means of compression comprising a rigid compression plate 29, having a flat intermediate portion 30, which is rigidly fixed to the remote end of the piston rod 31 of the jack, the latter being intended for vertical movement, as suggested by the arrows 32 in Figure 6.
  • On both sides of the intermediate region 30 merge the portions 33 protruding transversely outward and downward, which merge with the end shoulders 34 protruding transversely outward.
  • the shoulders 34 are intended to come into contact with the respective ridges 13 of the clamping jaw 10 and to compress them.
  • the compression plate 29 incorporates, at its two ends, a flange 35 for guiding and retaining the clasp, having a lower end flaring outwards, at 35 ′.
  • any of the notches 12a can be used for the insertion of a tool (not shown), which is used to force the jaw 10 in case it is necessary to replace the clasp.

Landscapes

  • Clamps And Clips (AREA)
  • Insulators (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)
  • Installation Of Indoor Wiring (AREA)
EP89100715A 1988-02-02 1989-01-17 Verschluss zum Befestigen einer elektrischen Leitung an einem glockenförmigen Stützkörper und Werkzeug dafür Expired - Lifetime EP0326848B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US151649 1988-02-02
US07/151,649 US4810837A (en) 1988-02-02 1988-02-02 Clasp for fixing an electrical wire to an insulator and method of fixation

Publications (3)

Publication Number Publication Date
EP0326848A2 true EP0326848A2 (de) 1989-08-09
EP0326848A3 EP0326848A3 (de) 1991-07-03
EP0326848B1 EP0326848B1 (de) 1994-10-12

Family

ID=22539667

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89100715A Expired - Lifetime EP0326848B1 (de) 1988-02-02 1989-01-17 Verschluss zum Befestigen einer elektrischen Leitung an einem glockenförmigen Stützkörper und Werkzeug dafür

Country Status (5)

Country Link
US (1) US4810837A (de)
EP (1) EP0326848B1 (de)
JP (1) JPH01289023A (de)
BR (1) BR8900437A (de)
DE (1) DE68918717T2 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4940857A (en) * 1989-08-15 1990-07-10 Giroux Pierre R Insulator for overhead electric wires
US5282302A (en) * 1992-11-16 1994-02-01 Starks Jimmy A Sucker rod guide clamping devices
US7432449B2 (en) * 2006-10-06 2008-10-07 Bong Joo Kim Electrical power line insulator with end clamp
KR100821827B1 (ko) * 2007-03-14 2008-04-14 김현철 애자용 전력케이블 고정장치
US7674982B2 (en) * 2008-01-29 2010-03-09 Bmc Innovation Inc. Electric cable and insulator self-locking system, and method of installation thereof
CN101847472B (zh) * 2009-03-26 2011-11-02 上海市电力公司 安全护线夹
JP5953227B2 (ja) * 2012-12-27 2016-07-20 株式会社永木精機 掴線器
CA2861914C (en) * 2013-10-04 2020-03-10 Thomas & Betts International Llc Compression wire joints
US9362733B2 (en) * 2013-10-29 2016-06-07 Eco Electrical Systems Insulator cover for electrical distribution systems
US9472325B2 (en) * 2014-01-21 2016-10-18 Eco Electrical Systems Insulator cover with securing clip for electrical distribution systems
BR102019027436A2 (pt) * 2019-12-20 2020-08-25 Ppc Santana Equipamentos Eletricos Ltda grampo de fixação de cabos para isolador pilar
CN115459151B (zh) * 2022-10-27 2024-05-03 国网山东省电力公司菏泽供电公司 一种可不停电作业的支柱绝缘子导线固定装置及使用方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US448956A (en) * 1891-03-24 Electric insulator
DE2319546A1 (de) * 1973-04-17 1974-11-07 Georg Karl Stuetzenisolator mit einer isolatorkopfmittelrinne fuer den leiter und einer loesbaren, das heraustreten des leiters aus der rinne verhindernden sperrvorrichtung
FI54662C (fi) * 1977-07-11 1979-01-10 Miettinen E K Y Rullhaengdon
DE7831492U1 (de) * 1978-10-23 1979-02-08 Noke Waermebau Gmbh & Co Kg, 2842 Lohne Rohrschelle aus kunststoff

Also Published As

Publication number Publication date
JPH01289023A (ja) 1989-11-21
EP0326848B1 (de) 1994-10-12
DE68918717T2 (de) 1995-03-16
EP0326848A3 (de) 1991-07-03
BR8900437A (pt) 1989-09-26
DE68918717D1 (de) 1994-11-17
US4810837A (en) 1989-03-07

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