WO2021033206A1 - Dispositif de préhension de câble réglable et non conducteur - Google Patents

Dispositif de préhension de câble réglable et non conducteur Download PDF

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Publication number
WO2021033206A1
WO2021033206A1 PCT/IN2020/050725 IN2020050725W WO2021033206A1 WO 2021033206 A1 WO2021033206 A1 WO 2021033206A1 IN 2020050725 W IN2020050725 W IN 2020050725W WO 2021033206 A1 WO2021033206 A1 WO 2021033206A1
Authority
WO
WIPO (PCT)
Prior art keywords
plunger
gripper
gripping
cable wire
cable
Prior art date
Application number
PCT/IN2020/050725
Other languages
English (en)
Inventor
Rajan Kapoor
Original Assignee
Golden Peakock Overseas Limited
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 Golden Peakock Overseas Limited filed Critical Golden Peakock Overseas Limited
Publication of WO2021033206A1 publication Critical patent/WO2021033206A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
    • F16G11/04—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with wedging action, e.g. friction clamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/10—Pendants, arms, or standards; Fixing lighting devices to pendants, arms, or standards
    • F21V21/112—Fixing lighting devices to pendants

Definitions

  • the present invention is generally related to cable grippers. More particularly, the present invention relates to cable grippers for suspension lighting.
  • a Gripper is a sophisticated piece of hardware that allows an electrician to adjust the height of a fixture without utilizing tools.
  • a plunger and three balls within the gripper surround the outside diameter and catch the cable as it passes through the gripper.
  • the tension forces the balls to grab the cable in a pinching movement.
  • An objective of the present invention is to provide a gripper for a cable wire which can firmly hold a cable wire under tensile stress, without cutting or distorting them.
  • An objective of the present invention is to provide a gripper which can be used with a cable wire, reducing the chances of faults like, short circuiting, or breaking of wire.
  • An objective of the present invention is to provide a gripper of non-conductive material, which can hold a cable wires as firmly as a gripper of conductive material conventionally available.
  • An aspect of the present invention includes a gripper for holding cable wires under tension, comprising: a body acting as a housing; a spring-loaded tapered plunger, inside the body, having: a central through hole along length of the plunger to insert a cable wire through it, and plurality of holes, each hole holds at least one gripping ball for firmly gripping the cable wire, inserted through the central hole, under tensile stress, wherein gripping balls are made of non-conductive material; a spring, situated under the plunger, for supporting up and down movement of the plunger caused whenever a load is applied and released on the cable wire; a knurling nut, situated around outer of the body, for holding the body when the gripper is holding the cable wire; and a locking nut, situated around outer of the body and above the plunger, for locking the plunger at a locking position, when the cable wire is passed through the central hole of the plunger and a load is applied on the cable wire to bring the cable wire under tensile stress, wherein
  • Another aspect of the present invention includes the non-conductive material of the gripping balls is at least plastic or Teflon or rubber, or a combination of all.
  • the gripper further includes a washer, situated below the plunger and the spring at one end of the body, that locks the spring and the plunger inside the body.
  • An aspect of the present invention includes the plunger including plurality of gripping components instead of the ball shaped gripping balls, such that these gripping components are suitable to be fit into the holes of the plunger and are successful in firmly gripping a cable wire under tensile stress, and wherein the gripping components have shape of at least semi-spherical, or oval, or trapezoidal, or rectangular or square.
  • An aspect of the present invention includes the spring is tapered compression spring.
  • An aspect of the present invention includes the body is cylindrical in shape.
  • Another aspect of the present invention provides the gripper is moved along length of the cable wire by adjusting the plunger further by screwing and un-screwing the locking nut to release and secure the plunger at the locking position, thus preventing any accidental loosening of the grips.
  • plunger is an oval plunger for gripping cable wires, and wherein the cable wires are flat wires.
  • Another aspect of the present invention provides the plunger has 3-6 holes and 3- 6 gripping components, such as the gripping balls.
  • FIGs. 1-3 illustrate an exemplary environment showing an assembly of a gripper with two or three core wire, where FIG. 1 illustrates top view, FIG.2 illustrates sectional perspective view and FIG. 3 illustrates a perspective view, in accordance with an embodiment of the present invention;
  • FIGs. 4-11 illustrate individual parts of the gripper and the cable wire, in accordance with an embodiment of the present invention;
  • FIGs. 12-13 illustrate an exemplary environment showing an assembly of a gripper with two or three flat core wire, where FIG. 12 illustrates an assembled view, FIG. 13 illustrates an additional plunger that can be used with the gripper of FIG. 12, in accordance with an embodiment of the present invention.
  • the present invention provides a gripper for holding cable wires under suspension. At least one part of the gripper is made of non-conductive material. In an embodiment, balls of the gripper are made of non-conductive material. In an embodiment, the non-conductive material is plastic.
  • the non-conductive parts of the gripper does not damage the cable wires during locking and even if balls cut through the wire through insulation, the non-conductive parts do not cause any faults, such as short circuit etc. because of the non-conductive locking parts.
  • the gripper comprises a body having a single tapered bore inside, wherein runs a tapered spring loaded plunger with a central hole and with radial holes.
  • the body is cylindrical.
  • the radial holes are three-six in number. These radial holes hold plastic balls of appropriate size, when a cable wire moves along the tapered hole of the body under spring pressure, the balls grip the cable wire pushed through the central hole of the plunger.
  • three-six numbers of balls are generally employed with three-six radial holes.
  • the gripper may have less or more number of radial holes, or balls, than 6 holes or balls, depending on the design and requirement of the gripper, without deviating from the meaning and scope of the present invention.
  • the cable wire is firmly gripped under tension of the suspended cable. After assembly, the wire is easily released/ adjusted by pressing the plunger. Further, the plunger can be locked in that gripping position by screwing a locking ring on the plunger, where the locking ring is positioned outside the body, thus preventing any accidental loosening of the grips.
  • FIGs. 1-3 illustrate an exemplary environment showing an assembly of a gripper with two or three core wire, where FIG.
  • FIG. 1 illustrates top view of the assembly
  • FIG.2 illustrates sectional perspective view of the assembly
  • FIG. 3 illustrates a perspective view of the assembly, in accordance with an embodiment of the present invention.
  • the FIGs 1-3 shows a gripper for holding cable wires under tension, comprising: a body acting as a housing; a spring-loaded tapered plunger, inside the body, having: a central through hole along length of the plunger to insert a cable wire through it, and plurality of holes, each hole holds at least one gripping ball for firmly gripping the cable wire, inserted through the central hole, under tensile stress, wherein gripping balls are made of non-conductive material; a spring, situated under the plunger, for supporting up and down movement of the plunger caused whenever a load is applied and released on the cable wire; a knurling nut, situated around outer of the body, for holding the body when the gripper is holding the cable wire; and a locking nut, situated around outer of the body and above the plunger, for
  • the gripper 100 comprises a main body 102.
  • the main body 102 is a housing for sub parts or internal parts of the gripper 100.
  • the main body 102 plays a very important role for gripping a cable or a wire due to presence of tapered angle inside the body 102.
  • the gripper 100 further comprises a plunger 104, which carries gripping balls 112 for wire fixing.
  • the gripper 100 may have three-six balls.
  • the balls 112 are made of non-conductive material.
  • the non-conductive material is plastic.
  • the balls 112 are critical component of the gripper 100 acting as a grip lock for a wire and the wire doesn’t get slip under tension.
  • the gripping balls 112 firmly hold the cable wire under tensile stress.
  • the plunger 104 may have different shape of the gripping components instead of the balls 112, such that these gripping components are suitable to be fit into the holes of the plunger and are successful in firmly gripping cable wire under tensile stress for example may be semi-spherical, or oval, or trapezoidal, or rectangular or square, without deviating from the meaning and scope of the present invention.
  • the gripper 100 further comprises a spring 204, and the spring 204 is a type of tapered compression spring which helps for movement of plunger 104 up and down by applying little downward force on the plunger 104 and the spring 204 returns back after releasing the loaded force, on the cable, to get its initial position.
  • the gripper 100 includes a washer 208, and the washer 208 locks spring 204 and plunger 104 inside the main body 102.
  • the gripper 100 includes a knurling nut 206; the knurling nut 206 holds the main body 102 during usage of the gripper 100 with lighting parts, such as a pendant lighting.
  • the gripper 100 also includes a locking nut 202, which locks the plunger 104 at a locking position, when the wire is passed through the plunger 104 and return load is applied on the wire. At this time, position of the plunger 104 is tightened by the help of the locking nut 202.
  • the gripper 100 holds a two or three core electrical cable 106 which is covered with a non-conductive insulation.
  • the assembly of the gripper 100 and the cable 106 may also include an additional oval plunger 1300 for gripping cable wires 106.
  • the wires 106 are flat wires.
  • the gripper 100 shown in the FIGs. 1-13 has at least one internal component or part made of non-conductive material.
  • the balls 112 of the gripper are made of non-conductive material for gripping the electric cable/cord.
  • the gripper 100 is adjustable around the cables 106. Even if, the balls cut through the insulation of the cable wires under tensile stress, the balls 112 do not result in faults, such as short circuiting, because of non-conductive material of the balls 112.
  • the internal components, such as balls 112 of the gripper 100 may be made of other non-conductive material present in the market, than plastic, such as rubber, Teflon, and the like, without deviating from the meaning and scope of the present invention. It may also be obvious to a person skilled in the art that other or all the internal components of the gripper may be made of non-conductive material, without deviating from the meaning and scope of the present invention.
  • the gripper 100 includes the plunger 104 which is simple in design and adjustable using a screw for easily gripping the cable/cord/wire.
  • the oval plunger 1300 may be used for flat cable/cord with 2-4 balls for gripping the cable/cord.
  • the gripper of the present invention made of non-conductive material may be more particularly used for suspension lighting.
  • the gripper may be easily fitted in quick, easy, convenient and cost-effective way for various fitments of pendants lighting, thus save assembly time and associated costs.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)

Abstract

La présente invention concerne un dispositif de préhension permettant de retenir solidement un câble/fil sous suspension, ou contrainte de traction, sans provoquer de défauts, tels qu'une mise en court-circuit, en raison d'une prise tendue du câble/fil par des parties internes du dispositif de préhension. Le dispositif de préhension comprend au moins une partie interne, généralement des billes, en matériau non conducteur, tel que du plastique. Par conséquent, même si les billes coupent à travers l'isolation des câbles/fils sous contrainte, les billes, étant en plastique, ne provoquent pas des mises en court-circuit.
PCT/IN2020/050725 2019-08-20 2020-08-20 Dispositif de préhension de câble réglable et non conducteur WO2021033206A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201911019758 2019-08-20
IN201911019758 2019-08-20

Publications (1)

Publication Number Publication Date
WO2021033206A1 true WO2021033206A1 (fr) 2021-02-25

Family

ID=74659807

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2020/050725 WO2021033206A1 (fr) 2019-08-20 2020-08-20 Dispositif de préhension de câble réglable et non conducteur

Country Status (1)

Country Link
WO (1) WO2021033206A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10341550A1 (de) * 2003-09-09 2005-03-31 Zumtobel Staff Gmbh Befestigungsvorrichtung zurlösbaren Befestigung eines Gegenstandes an einem langgestreckten Aufhängungselement
US7335836B2 (en) * 2002-10-21 2008-02-26 A.G.K., Ltd. Power supply wire, wire grip, electric appliance suspending device, and electric appliance suspending method
US20130139358A1 (en) * 2011-12-06 2013-06-06 Erico International Corporation Cable locking device
US20130219669A1 (en) * 2011-12-23 2013-08-29 Chien-Chih Lin Loop Suspension System

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7335836B2 (en) * 2002-10-21 2008-02-26 A.G.K., Ltd. Power supply wire, wire grip, electric appliance suspending device, and electric appliance suspending method
DE10341550A1 (de) * 2003-09-09 2005-03-31 Zumtobel Staff Gmbh Befestigungsvorrichtung zurlösbaren Befestigung eines Gegenstandes an einem langgestreckten Aufhängungselement
US20130139358A1 (en) * 2011-12-06 2013-06-06 Erico International Corporation Cable locking device
US20130219669A1 (en) * 2011-12-23 2013-08-29 Chien-Chih Lin Loop Suspension System

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