WO2020240471A1 - Ensemble contact pour boîte de jonction - Google Patents

Ensemble contact pour boîte de jonction Download PDF

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Publication number
WO2020240471A1
WO2020240471A1 PCT/IB2020/055082 IB2020055082W WO2020240471A1 WO 2020240471 A1 WO2020240471 A1 WO 2020240471A1 IB 2020055082 W IB2020055082 W IB 2020055082W WO 2020240471 A1 WO2020240471 A1 WO 2020240471A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
functional element
contact assembly
flap
box
Prior art date
Application number
PCT/IB2020/055082
Other languages
English (en)
Inventor
Flavio Regosa
Mattia REGOSA
Original Assignee
IAM Industrial Asset Management S.r.l.
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 IAM Industrial Asset Management S.r.l. filed Critical IAM Industrial Asset Management S.r.l.
Publication of WO2020240471A1 publication Critical patent/WO2020240471A1/fr

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Classifications

    • 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
    • H02G5/00—Installations of bus-bars
    • H02G5/06—Totally-enclosed installations, e.g. in metal casings
    • H02G5/08—Connection boxes therefor

Definitions

  • the present invention relates to a contact assembly suitable for use in a junction box for electrical installations of the type with prefabricated electric ducts including one or more conductive bars.
  • the invention also relates to a box suitable for use as a junction box for electrical installations of the type with prefabricated electric ducts including one or more conductive bars.
  • the invention further relates to a method of connecting a contact assembly to a prefabricated electric duct including one or more conductive bars and a method of disconnecting a contact assembly from a prefabricated electric duct including one or more conductive bars.
  • Prefabricated electric ducts are modular electrical lines that develop in space following predetermined paths obtained by appropriately arranging rectilinear and curvilinear elements in succession (for example elements that allow a deviation of the right angle path).
  • the elements whether straight or curved, generally include: a housing provided with a compartment open to the outside, a plurality of conductive bars, including for example a phase conductor bar, a neutral conductor bar, and a protective earth bar; a door fixed to the housing to close the compartment.
  • the prefabricated electric ducts are associated with accessory components, including the junction box, which is used to draw the electric current at a point where a utility is installed which must be supplied by such a current.
  • the assembly of the junction box to the prefabricated electric duct allows you to draw current from the conductive bars placed inside the prefabricated electric duct.
  • the junction box has a box-shaped body and functional elements that can translate with respect to the box shaped body.
  • the junction box with draws electric current from the conductive bars by means of the functional elements, each of which is adapted to be connected to a respective conductive bar.
  • the known functional elements are connected to an electrical conductor which allows bringing the electric current withdrawn through the functional elements out of the inner volume of the box.
  • the electrical conductor which is usually a cable, is integral with the respective functional element and may consequently be moved with respect to the box-like body of the junction box.
  • the movement of the cables with respect to the containment body involves some problems. For example, by moving the cables, these may be damaged and may consequently lead to breakdowns or malfunctions or service interruptions of the junction box. Possible damage to the cables may derive from the fact that, during handling, the cables slide on surfaces of the box-like body of the junction box and therefore are subject to wear. Furthermore, the movement of the cables subjects the cables themselves to mechanical tensions which, repeated cyclically over time, determine the occurrence of the phenomenon of fatigue. Fatigue can lead to damage or breakage of the cables, which compromises the electrical performance of the cables and therefore of the junction box. Further causes of damage to the cables may derive from the fact that, when they are subjected to mechanical tensions, they may undergo unwanted bending or changes in bending. Bending or changes in cable bending are phenomena that can occur at a portion of attachment of the cables to the respective functional elements; these phenomena can lead to a disconnection, even if only partial, of the cables from the respective functional elements, with consequent malfunctions of the junction box.
  • the main object of the present invention is to provide a contact assembly and a junction box for electrical installations of the prefabricated electric duct type capable of overcoming one or more of the drawbacks previously described in relation to the prior art.
  • a further object of the present invention is to provide a contact assembly and a junction box which can reduce the downtime of installations of the type with prefabricated electric ducts.
  • An additional object of the present invention is to provide a contact assembly and a junction box which can also reduce the maintenance costs of installations of the type with prefabricated electric ducts.
  • a contact assembly by a method of making a contact assembly, by a use of a contact assembly, by a method of connecting or disconnecting a contact assembly to or from a prefabricated electric duct including one or more conductive bars, by a junction box for electrical installations of the type with prefabricated electric ducts, by a use of a junction box, by a process for making a junction box, by a method of connection or disconnection of a junction box to or from a prefabricated electric duct including one or more conductive bars according to the appended claims and/or to the following aspects, which can be taken independently of each other or in combination with the individual technical features described in the detailed description or in combination with any of the appended claims.
  • a contact assembly suitable to be used in a junction box for electrical installations of the type with prefabricated electric ducts including one or more conductive bars and adapted to come into contact with at least one conductive bar to withdraw electric current, comprising: a containment body having at least one through opening,
  • At least one functional element housed at least partially in the containment body and suitable for withdrawing electric current from one of said conductive bars
  • At least a first terminal optionally carried by said at least one functional element and configured for implementing the connection of said at least one functional element to the respective conductive bar, at least a second terminal optionally engaged to the containment body and adapted to house, or to be connected to, an electrical conductor intended to carry the electric current withdrawn through said at least one functional element away from the contact assembly, wherein said at least one functional element is movable with respect to the second terminal or vice versa, between a connection position in which the first terminal is operatively connected to the second terminal and a disconnection position in which the first terminal is operatively disconnected from the second terminal.
  • the first terminal is reversibly movable with respect to the second terminal between the connection position and the disconnection position.
  • said at least one functional element is configured to operate at least between a retracted position and an advanced position, in the advanced position the first terminal being at least partially extracted from the containment body through said at least one through opening so as to be connected to the respective conductive bar, the connected position being an advanced position of said at least one functional element and the disconnected position being a backward position of said at least one functional element.
  • the contact assembly comprises a control member configured to cooperate with said at least one functional element so as to guide the positioning of said at least one functional element with respect to the containment body at least between the retracted position and the advanced position and/or vice versa, said at least one functional element comprising a seat or an abutment surface, intended to cooperate with said control member, the first terminal being integral with the control member at least upon the transition of said at least one functional element from the retracted position to the advanced position.
  • said at least one functional element comprises a seat, the first terminal being integral with the control member both upon the transition of said at least one functional element from the retracted position to the advanced and upon the transition of said at least one functional element from the advanced position to the retracted position.
  • said at least a second terminal is integral with the containment body and/or is fixed in a predetermined position with respect to the containment body.
  • said at least one second terminal is static with respect to the containment body and takes the same position with respect to the containment body both in the connection position of said at least one functional element and in the disconnection position of said at least one functional element.
  • said at least one functional element comprises a connection portion integral with the first terminal and configured to be connected with said at least one second terminal, in the connected position of said at least one functional element the connection portion operating in contact with said at least one second terminal and in the disconnected position of said at least one functional element the connection portion being spaced from said at least one second terminal.
  • connection portion is engaged to the first terminal, for example to the first end of the first terminal.
  • said at least a second terminal comprises a clamp at least partially elastically deformable.
  • the clamp comprises a first flap and a second flap configured to spread elastically so as to take an at least partially spread position.
  • the first flap and the second flap define an internal space of the clamp suitable for at least partially accommodating said connection portion.
  • the first flap and the second flap of the clamp are operable between an at least partially spread position and an approached position and are elastically movable between said positions, in the corresponding approached position ends of the flaps being close and/or facing each other and in the spread position corresponding ends of the flaps being spaced apart.
  • the clamp has an internal space, the connection portion being configured to be at least partially inserted in the internal space of the clamp in the connection position of said at least a functional element in which the first flap and the second flap assume the spread position.
  • the first flap and the second flap in the transition of the first flap and the second flap from the approached position to the spread position, define or widen an access mouth to the internal space where the connection portion can be inserted.
  • the clamp comprises a fulcrum portion, the first flap and the second flap being engaged to the fulcrum portion and emerging from the same side of the fulcrum portion, each flap developing between a first end and a second end mutually opposite each other, the first end of the first flap and the first end of the second flap being engaged to the fulcrum portion so as to emerge from respective opposite sides of the fulcrum portion, the second end of the first flap and the second end of the second flap being facing each other.
  • the first flap and the second flap are configured to rotate with respect to the fulcrum portion upon the elastic transition between an at least partially spread position and an approached position.
  • the first flap and the second flap are configured to rotate with respect to the fulcrum portion by an angular excursion between 0° and 45°, optionally between 0° and 20°.
  • the first flap and the second flap are configured to rotate with respect to the fulcrum portion in a mutually opposite direction.
  • the first flap is configured to rotate with respect to the fulcrum portion clockwise and the second flap is configured to rotate with respect to the fulcrum portion counterclockwise, or vice versa.
  • the first flap and the second flap have respective lips suitable to act as a recess for the insertion of the connection portion in the internal space of the clamp.
  • each flap has a first end and a second end and a prevailing development body interposed between the first end and the second end, the lip of each flap developing transversely with respect to the prevailing development body in such a way as to define a recess for insertion of the connection portion in the internal space of the clamp and/or directing the connection portion in the internal space of the clamp.
  • the lip of the first flap develops at the second end of the first flap and the lip of the second flap develops at the second end of the second flap.
  • the second terminal comprises at least one reinforcing element engaged to the clamp and configured to limit, or act in contrast to, a movement, for example an angular excursion, of at least one flap of the clamp in the transition of said at least one functional element from the disconnection position to the connection position and/or configured to fix a first end of at least one flap of the clamp to a fulcrum portion.
  • the second terminal comprises a first reinforcing element engaged to the clamp externally with respect to the first flap and a second reinforcing element opposed to the first reinforcing element and engaged to the clamp externally with respect to the second flap, the first reinforcing element being configured to limit, or act in contrast to, a movement, for example an angular excursion, of the first flap of the clamp in the transition of said at least one functional element from the disconnection position to the connection position and/or configured to fix a first end of the first flap of the clamp to a fulcrum portion, the second reinforcing element being configured to limit, or act in contrast to, a movement, for example an angular excursion, of the second flap of the clamp in the transition of said at least one functional element from the disconnection position to the connection position and/or configured to fix a first end of the second flap of the clamp to a fulcrum portion.
  • the first reinforcing element and the second reinforcing element surround at least partially, respectively, the first flap and the second flap.
  • the first reinforcing element and the second reinforcing element develop laterally, respectively, to the first flap and the second flap.
  • the first reinforcing element and the second reinforcing element develop externally with respect to the internal space of the clamp.
  • said at least one reinforcing element has an arched profile.
  • said at least one reinforcing element comprises a first section and a second section consecutive to the first section and transversal with respect to the first section, the first section being engaged to the fulcrum portion.
  • the first section and the second section have respective prevailing development directions transversal to each other, the prevailing development directions of the first section and the second section intersecting at a vertex portion of said at least one reinforcing element, the first section and the second section defining at least one angle comprised between 90° and 180°, optionally comprised between 120° and 180°, the apex of said at least one angle being defined at said vertex portion.
  • said at least one angle of said at least one reinforcing element is directly facing a flap of the clamp.
  • the first section and the second section define a first angle, or internal angle, and a second angle, or external angle, which are mutually explementary and have the same vertex defined at said vertex portion, said at least one angle being the smaller angle between the first angle and the second angle.
  • the first reinforcing element and the second reinforcing element comprise respective first sections and second sections, the first sections of the first reinforcing element and the second reinforcing element being facing and extending away from each other and the second sections of the first reinforcing element and of the second reinforcing element being facing and extending in approach to each other.
  • the first sections of the first reinforcing element and of the second reinforcing element define a rounded portion of the second terminal and the second sections of the first reinforcing element and of the second reinforcing element define a tapered portion of the second terminal.
  • connection portion comprises an electrically conductive contact plate configured to be at least partially inserted in said second terminal, optionally to be at least partially interposed between corresponding facing ends of flaps of a clamp of the second terminal.
  • connection portion is configured to wedge at least partially into an internal space of the second terminal, optionally in interposition between the first flap and the second flap of the clamp.
  • connection portion comprises an interposition end configured to fit at least partially into an internal space of the second terminal.
  • interposition end is an end of the contact plate configured to be at least partially inserted in interposition between the first flap and the second flap of the clamp.
  • the interposition end is configured to spread the clamp when it is inserted into the internal space of the clamp.
  • the interposition end is configured to spread the first flap and the second flap of the clamp when it is inserted in interposition between the first flap and the second flap of the clamp.
  • the interposition end is wedge-shaped and is configured to wedge at least partially into an internal space of the second terminal, optionally in interposition between the first flap and the second flap of the clamp.
  • the wedge-shaped interposition end is tapered.
  • the interposition end has a first thrust surface and a second thrust surface transversal to each other, upon insertion of the end of interposition in the internal space of the clamp the first thrust surface pushing on the first flap and the second thrust surface pushing on the second flap in such a way as to fit into the internal space of the clamp, spreading the first and second flaps, upon extraction of the end of interposition from the internal space of the clamp the first thrust surface sliding relative to, and away from, the first flap and the second thrust surface sliding relatively to, and away from, the second flap so as to free the space inside the clamp and consequently bring the first flap and the second flap together.
  • the first thrust surface is configured to slide with respect to the lip of the first flap both when inserting the interposition end in the internal space of the clamp and when extracting the interposition end from the internal space of the clamp and wherein the second thrust surface is configured to slide with respect to the lip of the second flap both when inserting the interposition end in the internal space of the clamp and when extracting the interposition end from the internal space of the clamp.
  • the contact assembly further comprises an actuation element operatively connected to the control member and configured to operate the control member between a rest condition, wherein the control member keeps said at least one functional element in the retracted or advanced position, and a guiding condition, in which the control member guides said at least one functional element between a retracted position and an advanced position and/or vice versa.
  • a process for manufacturing a contact assembly suitable for use in a junction box for electrical installations of the type with prefabricated electric ducts including one or more conductive bars and suitable for contacting at least one conductive bar for withdrawing electric current, optionally the contact assembly being according to any one of the preceding aspects and/or any of the appended claims, the process comprising the following steps:
  • a containment body having at least one through opening, optionally the containment body comprising a base and the through opening being defined on the base,
  • arranging at least one functional element suitable for withdrawing electric current from one of said conductive bars comprises arranging a first terminal configured to carry out the connection of said at least one functional element to the respective conductive bar
  • housing said at least one functional element at least partially in the containment body so that said at least one functional element is movable with respect to the second terminal or vice versa, between a connection position in which the first terminal is operatively connected to the second terminal and a disconnection position in which the first terminal is operatively disconnected from the second terminal.
  • housing said at least one functional element at least partially in the containment body comprises slidingly engaging said at least one functional element to the containment body.
  • engaging the second terminal to the containment body comprises fixing the second terminal in a predetermined position with respect to the containment body.
  • fixing the second terminal in a predetermined position with respect to the containment body comprises fixing the second terminal to the jacket, for example at a compartment of the jacket.
  • the step of housing said at least one functional element at least partially in the containment body is carried out in such a way that said at least one functional element is configured to operate at least between a retracted position and an advanced position, in the advanced position the first terminal being at least partially extracted from the containment body through said at least one through opening so that it can be connected to the respective conductive bar and being operatively connected to the second terminal.
  • contact assembly is provided, according to any one of the aspects from 1st to 48th and/or any one of the appended claims and/or made according to the method according to any one of the aspects from 49th to 53rd, in a junction box for electrical installations of the type with prefabricated electric ducts including one or more conductive bars.
  • contact assembly is provided, according to any one of the aspects from 1st to 48th and/or any one of the appended claims and/or made according to the method according to any one of the aspects from 49th to 53rd, to derive electric current withdrawn through said at least one functional element away from said contact assembly.
  • a method is provided of connecting or disconnecting a contact assembly to or from a prefabricated electric duct comprising at least the following steps:
  • arranging a contact assembly optionally according to any one of the aspects from 1st to 48th and/or to any one of the appended claims and/or made according to the method according to any one of the aspects from 49th to 53rd,
  • said movement at least one functional element with respect to the second terminal, or vice versa, between the disconnection position and the connection position comprises reversibly moving said at least one functional element with respect to the second terminal, or vice versa, between the disconnection position and the connection position.
  • the method is a method of connecting a contact assembly to a prefabricated electric duct, the step of moving said at least one functional element with respect to the second terminal providing for moving said at least one functional element with respect to the second terminal between a disconnection position, in which the first terminal is operatively disconnected from the second terminal and a connection position, in which the first terminal is operatively connected to the second terminal.
  • the second terminal comprises a clamp at least partially elastically deformable
  • moving said at least one functional element with respect to the second terminal, between a disconnected position in which the first terminal is operatively disconnected from the second terminal and a connected position in which the first terminal is operatively connected to the second terminal comprises:
  • the step of spreading the first flap and the second flap of the clamp is prior or simultaneous to the step of inserting at least partially the connection portion in the internal space of the clamp.
  • inserting at least partially a connection portion of said at least one functional element in an internal space of the clamp defined between the first flap and the second flap comprises wedging at least partially an interposition end of the connection portion between the first flap and the second flap of the clamp.
  • the method of connecting a contact assembly to a prefabricated electric duct comprises a step of arranging a prefabricated electric duct including one or more conductive bars, and wherein moving said at least one functional element with respect to the second terminal between a disconnection position, in which the first terminal is operatively disconnected from the second terminal and a connection position, in which the first terminal is operatively connected to the second terminal comprises contacting, by means of the first terminal, a respective conductive bar.
  • the method of connecting a contact assembly to a prefabricated electric duct comprises a step of positioning the contact assembly with respect to the prefabricated electric duct at a junction point, said step of positioning the contact assembly being prior to the movement of said at least one functional element with respect to the second terminal between a disconnection position, in which the first terminal is operatively disconnected from the second terminal and a connection position, in which the first terminal is operatively connected to the second terminal.
  • the method of connecting a contact assembly to a prefabricated electric duct comprises a step of constraining the contact assembly to a containment housing of conductive bars, said step of constraining the contact assembly being subsequent to the step of positioning the contact assembly.
  • the method is a method of disconnecting a contact assembly from a prefabricated electric duct, the step of moving said at least one functional element with respect to the second terminal providing for moving said at least one functional element with respect to the second terminal between a connection position, in which the first terminal is operatively connected to the second terminal and a disconnection position, in which the first terminal is operatively disconnected from the second terminal.
  • the second terminal comprises a clamp at least partially elastically deformable
  • moving said at least one functional element with respect to the second terminal, between a connected position in which the first terminal is operatively connected to the second terminal and a disconnected position in which the first terminal is operatively disconnected from the second terminal comprises:
  • the step of extracting at least partially a connection portion of said at least one functional element from an internal space of the clamp defined between the first flap and the second flap is prior to or simultaneous with approaching a first flap and a second flap of the clamp.
  • extracting at least partially a connection portion of said at least one functional element from an internal space of the clamp defined between the first flap and the second flap comprises:
  • the method of disconnecting a contact assembly from a prefabricated electric duct comprises a step of arranging a prefabricated electric duct including one or more conductive bars, and wherein moving said at least one functional element with respect to the second terminal between a connection position, in which the first terminal is operatively connected to the second terminal and a disconnection position, in which the first terminal is operatively disconnected from the second terminal comprises spacing the first terminal from a respective conductive bar.
  • the method of disconnecting a contact assembly from a prefabricated electric duct comprises a step of releasing the contact assembly from a containment housing of conductive bars, said step of releasing the contact assembly being subsequent to the movement of said at least one functional element with respect to the second terminal between a connection position, in which the first terminal is operatively connected to the second terminal and a disconnection position, in which the first terminal is operationally disconnected from the second terminal.
  • the method of disconnecting a contact assembly from a prefabricated electric duct comprises a step of disengaging the contact assembly from the containment housing of conductive bars, said step of disengaging the contact assembly being subsequent to the step of releasing the contact assembly.
  • a box suitable for use as a junction box for electrical installations of the type with prefabricated electric ducts including one or more conductive bars, comprising:
  • a box-like body comprising a plurality of walls assembled together so as to define a volume inside the box
  • a contact assembly according to any one of the aspects from 1 st to 48th and/or to any one of the appended claims and/or made according to the method according to any one of the aspects from 49th to 53rd, the containment body being housed in the internal volume of the box.
  • the second terminal is housed in the internal volume of the box.
  • the second terminal is fixed in a predetermined position with respect to said plurality of walls.
  • the second terminal is housed in the containment body both in the connection position of said at least one functional element and in the disconnection position of said at least one functional element .
  • said at least one functional element is configured to operate at least between a retracted position and an advanced position, in the advanced position the first terminal being at least partially extracted from the containment body through said at least one through opening so as to be connected to the respective conductive bar, the connected position being an advanced position of said at least one functional element and the disconnected position being a backward position of said at least one functional element.
  • a process for the manufacture of a box suitable for use as a junction box for electrical installations of the prefabricated electric duct type including one or more conductive bars, optionally the box being according to any one of the aspects from 72nd to 76th and/or to any one of the appended claims, the process comprising at least the following steps:
  • the process for making a box provides for making a contact assembly according to the method according to any one of the aspects from 49th to 53rd.
  • the process of making a box comprises one or more steps of the process of making a contact assembly according to the process according to any one of the aspects from 49 th to 53rd.
  • engaging the contact assembly to the box-like body comprises engaging the containment body to the box-like body, optionally to a first wall of said walls.
  • engaging the containment body to the box-like body comprises engaging a base of the containment body to the box-like body, optionally to a first wall of said walls.
  • engaging the containment body to the box-like body comprises fixing the second terminal in a predetermined position with respect to said plurality of walls.
  • the method comprises a step of housing the contact assembly in the box-like body, the step of housing the contact assembly in the box-like body being prior the step of engaging the contact assembly to the box-like body.
  • housing the contact assembly in the box-like body comprises housing the containment body in the box-like body.
  • the box-like body comprises a first opening formed on a first wall of said walls, the step of housing the contact assembly in the box-like body being made in such a way that said first opening faces said through opening.
  • the box-like body comprises a second opening formed on a second wall of said walls opposite to a first wall of said walls, said second opening being suitable to allow access to said at least one functional element
  • the method comprising a step of engaging the box-like body with a closing door of said second opening adapted to operate between a closed position, in which the second opening is occluded and an open position, in which it allows access to said at least one functional element.
  • arranging a plurality of walls assembled together so as to form a box-like body suitable for defining a volume inside the box comprises:
  • box is provided, according to any one of the aspects from 72nd to 76th and/or to any one of the appended claims and/or made according to the method according to any one of the aspects from 77th to 87th, as a junction box for electrical installations of the type with prefabricated electric ducts including one or more conductive bars.
  • a method is provided of connecting or disconnecting a box to or from a prefabricated electric duct comprising at least the following steps: arranging a box, optionally according to any one of the aspects from 72nd to 76th and/or to any one of the appended claims and/or made according to the method according to any one of the aspects from 77th to 87th,
  • said movement at least one functional element with respect to the second terminal, or vice versa, between the disconnection position and the connection position comprises reversibly moving said at least one functional element with respect to the second terminal, or vice versa, between the disconnection position and the connection position.
  • the method of connecting or disconnecting a box to or from a prefabricated electric duct provides for connecting or disconnecting a contact assembly to or from a prefabricated electric duct according to method according to any one of the aspects from 56th to 71 st and/or to any of the appended claims.
  • the method of connecting or disconnecting a box to or from a prefabricated electric duct comprises one or more steps of the method of connecting or disconnecting a contact assembly to or from a prefabricated electric duct according to the method according to any one of the aspects from 56th to 71 st and/or to any one of the appended claims.
  • the method is a method of connecting a box to a prefabricated electric duct, the step of moving said at least one functional element with respect to the second terminal providing for moving said at least one functional element with respect to the second terminal between a disconnection position, in which the first terminal is operatively disconnected from the second terminal and a connection position, in which the first terminal is operatively connected to the second terminal.
  • the method of connecting a box to a prefabricated electric duct comprises a step of arranging a prefabricated electric duct including one or more conductive bars, and wherein moving said at least one functional element with respect to the second terminal between a disconnection position, in which the first terminal is operatively disconnected from the second terminal and a connection position, in which the first terminal is operatively connected to the second terminal comprises contacting, by means of the first terminal, a respective conductive bar.
  • the method of connecting a box to a prefabricated electric duct comprises a step of positioning the box with respect to the prefabricated electric duct at a junction point, said step of positioning the box being prior to the movement of said at least one functional element with respect to the second terminal between a disconnection position, in which the first terminal is operatively disconnected from the second terminal and a connection position, in which the first terminal is operatively connected to the second terminal.
  • the method of connecting a box to a prefabricated electric duct comprises a step of constraining the box to a containment housing of conductive bars, said step of constraining the contact assembly being subsequent to the step of positioning the box.
  • the method is a method of disconnecting a box from a prefabricated electric duct, the step of moving said at least one functional element with respect to the second terminal providing for moving said at least one functional element with respect to the second terminal between a connection position, in which the first terminal is operatively connected to the second terminal and a disconnection position, in which the first terminal is operatively disconnected from the second terminal.
  • the method of disconnecting a box from a prefabricated electric duct comprises a step of arranging a prefabricated electric duct including one or more conductive bars, and wherein moving said at least one functional element with respect to the second terminal between a connection position, in which the first terminal is operatively connected to the second terminal and a disconnection position, in which the first terminal is operatively disconnected from the second terminal comprises spacing the first terminal from a respective conductive bar.
  • the method of disconnecting a box from a prefabricated electric duct comprises a step of releasing the box from a containment housing of conductive bars, said step of releasing the box being subsequent to the movement of said at least one functional element with respect to the second terminal between a connection position, in which the first terminal is operatively connected to the second terminal and a disconnection position, in which the first terminal is operationally disconnected from the second terminal.
  • the method of disconnecting a box from a prefabricated electric duct comprises a step of disengaging the box from the containment housing of conductive bars, said step of disengaging the box being subsequent to the step of releasing the box.
  • figure 1 is a top perspective view of a contact assembly according to an embodiment of the present invention, illustrating an actuation element in a rest condition
  • figure 2 is a front perspective view of the contact assembly of figure 1 , from which some components have been removed in order to simplify the figure and in order to show the connection portions of the functional elements in a position of disconnection from the second terminals
  • figure 3 is a top perspective view of a contact assembly according to an embodiment of the present invention, illustrating an actuation element in an operative condition
  • figure 4 is a front view of the contact assembly of figure 3, from which some components have been removed in order to simplify the figure and in order to show the connection portions of the functional elements in a position of connection to the second terminals,
  • figure 5 is a sectional side view of the contact assembly according to an embodiment of the present invention, illustrating the functional elements in an advanced position
  • figure 6 is an exploded view of a second terminal of a contact assembly according to an embodiment of the present invention.
  • figure 7 is an exploded view of a functional element of a contact assembly according to an embodiment of the present invention.
  • figure 8 is an exploded view of a contact assembly according to an embodiment of the present invention.
  • figure 9 is a front view of a junction box in a condition of engagement with a containment housing of conductive bars; the junction box and the contact assembly have been sectioned in such a way as to illustrate the functional elements of the contact assembly, which are in a disconnected position in which they are spaced from the respective conductive bars,
  • figure 10 is a front view of a junction box in operative condition; the junction box and the contact assembly have been sectioned so as to illustrate the functional elements of the contact assembly, which are in a connection position in which they are connected to the respective conductive bars.
  • terminal is to be understood as “electrical terminal”, that is as at least partially electrically conductive element configured to withdraw and/or transmit electric current and/or to be connected to electrical conductors, such as conductive bars, configured to withdraw and/or transmit electric current
  • connect refers, where applicable and unless otherwise specified, to an electrical connection between the subject components.
  • the reference numeral 1 indicates a contact assembly as a whole according to the present invention.
  • the contact assembly 1 is adapted to be used or installed in a junction box 50 for electrical installations of the type with prefabricated electric ducts 100 including one or more conductive bars 101.
  • the contact assembly 1 is also adapted to come into contact with at least one conductive bar 101 to withdraw electric current.
  • the contact assembly 1 comprises a containment body 2, which basically constitutes a frame of the contact assembly 1.
  • the containment body 2 comprises a base 3, a jacket 4 and a head 5.
  • the base 2, the jacket 4 and the head 5 are illustrated in an assembled condition, for example, in figures 1, 3 and 5 and in an exploded condition in figure 8, while in figure 2, the base 2, the jacket 4 and the head 5 are not illustrated (have been removed) in order to illustrate some components, which will be detailed below, which are at least partially housed in the containment body 2.
  • the jacket 4 the head 5 have been removed from the contact assembly 1 of figure 4, and are therefore not illustrated, while the base 3 is shown.
  • the base 3 may constitute a lower portion of the containment body 2. As illustrated in figures 5 and 8, the base 3 has a through opening 6. The base 3 also has a passage 7, which may be in the form of a circular profile through hole. From a geometric point of view, the base 3 has a substantially parallelepiped shape.
  • the accompanying figures show a base 3 substantially having a rectangular base parallelepiped shape; in possible variants, the base 3 may have a different geometry.
  • the base 4 is engaged with the jacket 4, which has a substantially hollow or tubular shape defining a cavity therein.
  • the jacket 4 comprises a main development body provided with a plurality of walls 8a, 8b, 8c, 8d delimiting the cavity laterally.
  • a jacket having a first, a second, a third and a fourth wall 8a, 8b, 8c, 8d is illustrated in the accompanying figures; it is understood that, in possible variants, the number of walls of the main development body may differ from four.
  • the first and fourth walls 8a, 8d may be opposite and parallel to each other and the second and third walls 8b, 8c may be opposite and parallel to each other and may also be transversal to the first and fourth walls 8a, 8d and interposed between of them.
  • the first wall 8a is a front wall of the main development body
  • the fourth wall 8d is a rear wall of the main development body
  • the second and fourth walls 8b, 8d are sides of the main development body interposed between the first and fourth walls 8a, 8d and orthogonal thereto.
  • the jacket 4 has a first and a second access opening 8', 8" to the opposite cavity with reference to a development direction of the main development body.
  • the first access opening 8' may constitute an upper opening of the jacket 4 (see figure 1 and figure 8)
  • the second access opening 8" may constitute a lower opening of the jacket 4 (see figure 5).
  • the jacket 4 may also have a pedestal 9 transversal to the main development body.
  • the pedestal 9 is adapted to allow engagement between jacket 4 and base 3.
  • the pedestal 9 may be in one piece with the main development body (see for example figure 9), it may develop higher than the base 3 and it may be defined in the proximity of the second access opening 8".
  • the contact assembly 1 may comprise a pedestal 9 made in one piece with the base 3.
  • the pedestal 9 develops at least partially peripherally with respect to the main development body around the second access opening 8".
  • the pedestal 9 emerges from the second, third and fourth walls 8b, 8c, 8d orthogonally with respect to them.
  • the pedestal 9 has a passage 9a, which may for example be in the form of a circular profile through hole.
  • the passage 9a of the pedestal 9 faces the passage 7 of the base 3 and may be defined above it with respect to it (see figure 8).
  • the base 3 may provide a single passage, which may be in the form of a circular profile through hole.
  • the jacket 4 may also have a plurality of compartments 10, which may act as a guide; for this purpose, each compartment 10 may have a guide 10a (see figure 8).
  • the compartments 10 may be defined outside the volume of the jacket 4, for example on the side or frontally with respect to a wall 8a, 8b, 8c, 8d of the main development body.
  • the accompanying figures show a contact assembly 1 whose compartments 10 are defined frontally with respect to the first wall 8a.
  • the jacket 4 is engaged to the base 3 so that the second access opening 8" of the jacket 4 faces the through opening 6 of the base 3.
  • the jacket 4 is engaged, by means of the pedestal 9, above the base 3.
  • the head 5 is engaged to the jacket 4. With reference to the spatial orientation of the contact assembly 1 illustrated in the accompanying figures, the head 5 is engaged above the jacket 4 in the proximity of the first access opening 8'. The head 5 is engaged to the jacket 4 so as not to occlude the first access opening 8' of the jacket 4. In a variant, the head 5 is engaged to the jacket 4 so as to partially occlude the first access opening 8' in order to leave a passage section of the first access opening 8' free.
  • the head 5 may comprise a plurality of guides 1 1 each of which defines an end-of-travel 1 1 a. As shown in figure 8, the end-of-travels 1 1 a may be defined by an upper portion or wall of the guides 1 1.
  • base 3, jacket 4 and head 5 may be made in a known way, for example by means of threaded elements 12, such as screws, nuts, bolts or the like.
  • the base 3, the jacket 4 and the head 5 are made up of three separate pieces; however, in alternative embodiments, at least two between the base 3, the jacket 4 and the head 5 may be in one piece and the other between the base 3, the jacket 4 and the head 5 may consist of a separate piece.
  • the jacket 4 and the base 5 may be in one piece or the jacket 4 and the head 5 may be in one piece or the base 3 and the head 5 may be in one piece.
  • the entire containment body 2 may be in one piece and therefore the base 3, the jacket 4 and the head 5 may be monolithic.
  • the contact assembly 1 may also have at least one positioning element 13', 13".
  • the positioning element 13', 13" is configured to suitably position the contact assembly 1 with respect to the prefabricated electric duct 100 and the conductive bars 101 contained therein.
  • the positioning element 13', 13" is configured to position the box 50 with respect to the prefabricated electric duct 100 and the conductive bars 101 contained therein.
  • the contact assembly 1 comprises a first positioning element 13' and a second positioning element 13" configured to position the contact assembly 1 or the box 50.
  • the first positioning element 13' and the second positioning element 13" may be arranged in the proximity of respective longitudinal ends of one side of the base 3 delimiting the through opening 6 (see figure 5).
  • the first positioning element 13' and the second positioning element 13" may emerge from the same surface of the base 3, for example from a lower surface of the base 3, so as to be facing, when positioning the contact assembly 1 or the box 50 with respect to the prefabricated electric duct 100, a containment housing 102 of conductive bars 101.
  • the positioning elements 13', 13" constitute protrusions projecting from the lower surface of the base 3; projecting from the lower surface of the base 3, the positioning elements 13', 13" may be inserted in suitable housings, such as windows, defined on the containment housing 102 so as to abut the lower surface of the base 3 to a surface of the containment housing 102.
  • each positioning element 13', 13" is in the form of a fixed arm.
  • the fixed arms 13', 13" are configured to maintain the same position with respect to the base 3.
  • the contact assembly 1 further comprises a plurality of functional elements 14, each of which is suitable for withdrawing the electric current from a respective conductive bar 101 of a prefabricated electric duct 100.
  • Each functional element 14 may be substantially in the form of, or comprise, a contact, or bulb, configured to withdraw a single electrical phase from a respective conductive bar 101.
  • the functional elements 14 are housed at least partially inside the containment body 2. As illustrated in the accompanying figures, all the functional elements 14 share the same containment body 2 and are mainly housed in the cavity of the jacket 4 of the containment body 2; in other words, prevailing portions of the functional elements 14 are housed in the cavity of the jacket 4 of the containment body 2.
  • Each functional element 14 is engaged in the cavity of the jacket 4 so as to partially develop inside the cavity of the jacket 4 and partially outside the cavity of the jacket 4, for example at the compartments 10 of the jacket 4.
  • a portion of each functional element 14 may be slidably housed at respective guides 10a of the compartments 10 of the jacket 4; each guide 10a guides a respective functional element 14 during a movement of the functional element 14 with respect to the base 3 and to the jacket 4 itself.
  • the end-of-travels 11a of the head 5 are configured to limit the movement of said portion of each functional element 14.
  • the end-of-travel for the functional elements 14 may be defined at the jacket 4.
  • each functional element 14 is adapted to determine the transition of the functional element 14 between an advanced position and a retracted position, which will be detailed below.
  • the functional elements 14 are configured to translate between the advanced and retracted positions and vice versa. From an operational point of view, each functional element 14 is capable of assuming the advanced and retracted positions; these positions may be defined with reference to a portion of the containment body 2; for example, the advanced position and the retracted position may be defined with reference to the base 3.
  • the advanced position and the retracted position of the functional elements 14 may be defined with reference to the through opening 6 of the base 3; even more in detail, the advanced position and the retracted position of the functional elements 14 may be defined with reference to the lower surface of the base 3, intended to face or abut on the containment housing 102, at which the through opening 6 is defined.
  • each functional element 14 is able to be connected to the respective conductive bar 101;
  • figure 10 illustrates functional elements 14 in the advanced position connected to a respective conductive bar 101.
  • each functional element 14 is unable to be connected to the respective conductive bar 101.
  • the retracted position of the functional elements 14 corresponds to a rest condition of the functional elements 14; the functional elements 14 assume, in the rest condition, the retracted position.
  • the retracted position may be a retracted position of the functional element 14 and the advanced position may be an extracted position of the functional element 14; the retracted position, the retraction action, the extracted position and the extraction action of the functional elements 14 may be defined with respect to the lower surface or the through opening 6 of the base 3.
  • each functional element 14 does not protrude from the base 3.
  • each functional element 14 protrudes at least partially from the base 3 through the through opening 6; as shown in figure 6, in the extracted position at least a terminal portion of the functional element 14 protrudes from the base 3 through the through opening 6.
  • the passage from the retracted position to the extracted position, and optionally vice versa, may be allowed by the sliding of a portion of each functional element 14 with respect to the respective guide 11 of the head 5 and, in addition or alternatively, with respect to the guide defined by the respective compartment 10 of the jacket 4.
  • each functional element 14 comprises a first terminal 15.
  • the first terminal 15 is suitable to cooperate with a respective second terminal 16 of the contact assembly 1.
  • the first terminal 15 is configured to spread elastically to implement the connection of the functional element 14 to the respective conductive bar 101.
  • the first terminal 15 may develop along a main development direction and comprises a first end 15a and a second end 15b mutually opposite to the main development direction.
  • the first end 15a is housed at least partially inside the jacket 4 or the head 5, while the second end 15b protrudes from the jacket 4 at the second access opening 8" of the main development body of the jacket 4.
  • the first end 15a is partially housed by the head 5 and the second end 15b protrudes from the lower opening 8" of the jacket 4.
  • the second end 15b passes through the through opening 6 and also protrudes from the base 3.
  • the first terminal 15 is configured to spread elastically at least at the second end 15b.
  • the first terminal 15 comprises at least one electrically conductive sheet 17', 17", optionally at least two electrically conductive sheets 17', 17", which are elastically deformable at the second end 15b of the first terminal 15.
  • the electrically conductive sheets 17', 17" are configured to approach and move elastically away from each other.
  • each electrically conductive sheet 17', 17" may comprise a first conductive sheet and a second conductive sheet substantially having a corresponding profile.
  • each functional element 14 further comprises a casing 18, housing at least the first end 15a of the first terminal 15, while the second end 15b of the first terminal 15 protrudes from the casing 18.
  • each casing 18 comprises two half-shells 18a, 18b which may be assembled together (see figure 7).
  • the accompanying figures show the two half-shells 18a, 18b of a casing 18 in an assembled condition in which they cooperate to form a compartment in which at least the second end 15b of the first terminal 15 is housed.
  • the casing 18 further comprises a window 18c arranged on a side wall of the casing 18, for example on a side of the casing 18.
  • the window 18c may have a closed path.
  • a respective part of the path of the window 18c may develop at each half-shell 18a, 18b (see figure 7) so as to define, in the assembled condition of the casing 18, the closed path of the window 18c.
  • the functional elements 14 comprise a seat 19, which may for example substantially consist of a through hole.
  • the seat 19 of each functional element 14 is defined at the casing 18.
  • each half-shell 18a, 18b has a respective through hole, which may be defined at a respective end portion of the half-shells 18a, 18b; in the assembled condition of the casing 18, the through holes face each other and the seat 19 of each functional element 14 is defined by the two through holes.
  • the seat 19 makes the functional element 14 susceptible of receiving control stresses coming from two opposite directions.
  • the accompanying figures show five functional elements 14, each of which has a respective casing 18 provided with a respective seat 19; however, the functional elements 14 may be provided in different numbers according to the specific needs and/or intended uses of the contact assembly 1.
  • the functional elements 14 may be substantially of two types; a first typology of functional elements 14 having the above seat 19 and a second typology of functional elements 14 having an abutment surface.
  • the difference between the first typology and the second typology of functional elements 14 consists in the fact that the first typology, as previously said, makes the functional element 14 susceptible to receive control stresses coming from two opposite directions, while the second typology makes the functional element 14 capable of receiving control stresses coming from a single direction; the control stresses coming from the opposite direction have no effect on the functional elements 14 of the second type.
  • the contact assembly 1 may comprise a plurality of functional elements 14 belonging to the first typology, and a single functional element 14 belonging to the second typology.
  • the single functional element 14 belonging to the second type is intended to be connected to an earth conductive bar 101.
  • Each functional element 14 comprises a connection portion 20.
  • the connection portion 20 is made of electrically conductive material and is engaged to the first terminal 15 in such a way as to be integral therewith. As illustrated by way of example in figure 7, the connection portion 20 is engaged at the first end 15a of the first terminal 15. The connection portion 20 is engaged to the first end 15a of the first terminal 15 and develops at least partially outside the casing 18.
  • the connection portion 20 is slidably housed in a respective guide 1 1 of the head 5. The positioning of the connection portion 21 at the guide 1 1 allows directing, according to the direction of movement imposed on the functional element 14, the translatory movement of the functional element 14 from the extracted position to the retracted position or vice versa.
  • connection portion 20 comprises an interposition end 21.
  • the interposition end 21 may be wedge-shaped and may be tapered. With reference to the spatial orientation of the connection portion 20 illustrated in the accompanying figures, the interposition end 21 is a lower end of the connection portion 20.
  • the connection portion 20 comprises an electrically conductive contact plate having a tapered and wedge- shaped interposition end 21.
  • each functional element 14 may be moved with respect to the second terminal 16 between a connection position and a disconnection position. In the connection position, the first terminal 15 is operatively connected to the second terminal 16, while in the disconnection position the first terminal 15 is spaced and operatively disconnected from the second terminal 16. The movement of the functional element 14 determines the movement of the first terminal 15 and of the connection portion 20 with respect to the second terminal 16.
  • the contact assembly 1 further comprises at least a second terminal 16.
  • the contact assembly 1 preferably comprises a plurality of second terminals 16; as shown in the accompanying figures, the second terminals 16 may be equal in number to the number of functional elements 14 of the contact assembly 1. Providing that the second terminals 16 are equal in number to the number of functional elements 14 of the contact assembly 1 allows having a second terminal dedicated and configured to cooperate with a respective first terminal 15.
  • a second terminal 16 is described below; it is understood that the features described below with reference to a second terminal 16 may be applied to each second terminal 16 of the contact assembly 1 provided with a plurality of second terminals 16, such as that shown in the accompanying figures.
  • the second terminal 16 is configured to cooperate with the first terminal 15 to derive electric current withdrawn from at least one functional element 14 away from the contact assembly 1 and, in the condition of installation of the contact assembly 1 in a box 50, outside of an internal volume of the box 50.
  • the second terminal 16 is adapted to house or be connected to an electrical conductor, such as a cable, intended to carry the electrical current withdrawn through the functional element 14 away from the contact assembly 1 and, in the condition of installation of the contact assembly 1 in a box 50, outside an internal volume of the box 50.
  • the second terminal 16 is integral with the containment body 2 and is fixed in a predetermined position with respect to the containment body 2.
  • the second terminal 16 is static with respect to the containment body 2; in order to allow the operational connection between the first and second terminals 15, 16 aimed at bringing the electrical current withdrawn through the functional element 14 away from the contact assembly 1 or in order to allow the operational disconnection between the first and second terminals 15, 16 aimed at interrupting the withdrawal of electric current by the functional element 14, the functional element 14, and therefore the first terminal 15 carried by it, is moved respectively towards the second terminal 16 (to determine the operational connection between first and second terminals 15, 16) or away from the second terminal 16 (to determine the operational disconnection between first and second terminals 15, 16).
  • the second terminal 16 is housed at a respective compartment 10 of the containment body 2 and at least partially by the head 5.
  • each second terminal is arranged in front of the first wall 8a and is interposed between the respective compartment 10 and the head 5, which is engaged with the jacket 4 above the compartments 10.
  • the second terminal 16 comprises a clamp 22 provided with a first flap 23, a second flap 24 and a fulcrum portion 25 configured to constrain the first and second flaps 23, 24.
  • the fulcrum portion 25 comprises a base portion 25a configured to be engaged to the containment body 2.
  • the accompanying figures show a base portion 25a configured to be engaged to the containment body 2 at a respective compartment 10 of the jacket 4; the base portion 25a is provided with a through hole, which may be crossed by a threaded element 12 of a known type which allows the engagement thereof with the jacket 4.
  • the fulcrum portion 25 further comprises a flange 25b transverse to the base portion 25a and configured to allow engagement of the first and second flaps 23, 24.
  • the flange 25b may have at least one through hole, which may be crossed by a constraint element 12' of a known type, for example a threaded element or a rivet, which allows the engagement to at least one between the first and the second flap 23, 24.
  • the accompanying figures show a flange 25b which develops orthogonally to the base portion 25a and is provided with two through holes, each of which may be crossed by a constraint element 12' of a known type, for example a threaded element, which allows the engagement thereof on the first and second flaps 23, 24.
  • the first flap 23 and the second flap 24 are engaged to the fulcrum portion 25, which emerge from the same side of the fulcrum portion 25.
  • Each flap 23, 24 has a first end 23a, 24a and a second end 23b, 24b mutually opposite to each other and a respective prevailing development body 23c, 24c interposed between the respective first ends 23a, 24a and second ends 23b, 24b (see figure 6).
  • the first end 23a of the first flap 23 and the first end 24a of the second flap 24 may be engaged to the fulcrum portion 25, for example at the flange 25b and by means of the aforesaid constraint elements 12' of a known type, so as to emerge from respective opposite sides of the fulcrum portion 25.
  • the second end 23b of the first flap 23 and the second end 24b of the second flap 24 face each other and are configured to define an access mouth of the clamp 22.
  • the first flap 23 and the second flap 24 are configured to operate between an approached position and an at least partially spread position; in the approached position, the first and second flaps 23, 24 are close and directly facing each other, while in the at least partially spread position the first and second flaps 23, 24 are spaced apart to define an internal space of the clamp 22 suitable for accommodating at least partially the connection portion 20.
  • the internal space of the clamp 22 is also defined in the approached position of the first and second flaps 23, 24 and the first and second flaps 23, 24, passing from the approached position to the spread position, widen the access mouth to the internal space where the connection portion 20 can be inserted.
  • the first and second flaps 23, 24 are elastically and reversibly movable between the approached position and the at least partially spread position. Starting from the approached position, the first flap 23 and the second flap 24 are configured to spread elastically so as to assume the at least partially spread position.
  • Figure 4 shows clamps 22 of respective second terminals 16 in which the first and second flaps 23, 24 are in a spread position engaging the connection portion 20 of respective functional elements 14; the connection portion 20 is arranged in the internal space of the clamp 22 and the first and second flaps 23, 24 contact and surround opposite sides of the connection portion 20.
  • the first flap 23 and the second flap 24 are configured to rotate with respect to the fulcrum portion to elastically pass between the approached position and the at least partially spread position, and vice versa.
  • the first flap 23 and the second flap 24 may rotate with respect to the fulcrum portion 25 by an angular excursion which may be, by way of example, between 0° and 45°.
  • the angular excursion may be between 0° and 20°.
  • the angular excursion may be defined between a vertical direction through the flange 25b and a direction defined by the prevailing development body 23c, 24c of each flap 23, 24.
  • the first flap 23 and the second flap 24 are configured to rotate with respect to the fulcrum portion 25 in a mutually opposite direction.
  • the first flap 23 is configured to rotate with respect to the fulcrum portion 25 in a clockwise direction and the second flap 24 is configured to rotate with respect to the fulcrum portion 25 in a counterclockwise direction.
  • the rotation of the flaps 23, 24 is triggered by the insertion of the interposition end 21 of the connection portion 20 into the access mouth of the clamp 22.
  • the first thrust surface 21 a is configured to push on the first flap 23 and the second thrust surface 21 b is configured to push on the second flap 24, causing the spreading thereof.
  • the interposition end 21 is further configured to be extracted from the internal space of the clamp 22 so as to approach the first and second flaps 23, 24 to each other.
  • first and second flaps 23, 24 also comprise respective lips defined at the second end 23b, 24b of each flap 23, 24 and suitable to act as a recess for the insertion of the connection portion 20 into the internal space of the clamp 22.
  • the lips of each flap 23, 24 develop transversely with respect to the prevailing development body 23c, 24c of the flap 23, 24 so as to direct the insertion of the connection portion 20 into the internal space of the clamp 22. In the approached position of the first and second flaps 23, 24, the lips are directly facing and approached.
  • the second terminal 16 may further comprise at least one reinforcing element 26', 26" engaged to the clamp 22.
  • the reinforcing element 26', 26” may be configured to limit a movement, for example an angular excursion, of at least a flap 23, 24 of the clamp 22 when inserting the connection portion 20 into the internal space of the clamp 22.
  • the reinforcing element 26', 26" may also have at least one through hole and be engaged to the fulcrum portion 25, for example at the flange 25b, by means of at least one constraint element 12' of known type crossing the through hole.
  • the second terminal 16 may have a first reinforcing element 26' operating on the first flap 23 and a second reinforcing element 26" operating on the second flap 24 (see figure 6).
  • the first reinforcing element 26' is engaged to the clamp 22 externally with respect to the first flap 23 and the second reinforcing element 26' is engaged to the clamp 22 externally with respect to the second flap 24.
  • first reinforcing element 26' is engaged to the first flap 23 and the flange 25b and the second reinforcing element 26" is engaged to the second flap 24 and to the flange 25b on the opposite side with respect to the first reinforcing element 26'.
  • the first reinforcing element 26' is configured to limit the movement of the first flap 24 and the second reinforcing element 26” is configured to limit the movement of the second flap 24.
  • the first reinforcing element 26' may have two through holes, each of which is aligned with a respective through hole of the first flap 23 and of the flange 25b to allow the engagement of the first flap to the flange 25b and, likewise, the second reinforcing element 26" may have two through holes, each of which is aligned with a respective through hole of the second flap 23 and of the flange 25b to allow engagement of the second flap to the flange 25b.
  • each through hole of the first reinforcing element 26' may be facing a respective through hole of the second reinforcing element 26” in such a way as to allow the engagement of the reinforcing elements 26', 26" and of the flaps 23, 24 to the flange 25b by means of two constraint elements 12', one for each series of through holes facing each other.
  • the contact assembly 1 further comprises a control member 27.
  • the control member 27 is configured to cooperate with at least one functional element 14 so as to guide the positioning thereof with respect to the containment body 2 at least between the retracted position and the advanced position or vice versa.
  • the control member 27 may assume a rest condition and an operative condition.
  • control member 27 In the rest condition, the control member 27 maintains at least one functional element 14 in the retracted position, while in the operative condition the control member 27 maintains at least one functional element 14 in the advanced position.
  • the control member 27 may also assume a guiding condition, in which the control member 27 guides at least one functional element 14 between the retracted position and the advanced position or vice versa.
  • the guiding condition is a condition of the control member 27 intermediate between the rest condition and the operative condition.
  • the control member 27 shown in the accompanying figures is configured to cooperate with all the functional elements 14 in such a way as to guide their positioning with respect to the containment body 2 by means of a single movement of the control member 27.
  • control member 27 is configured to cooperate with all the functional elements 14 to allow the transition thereof from the retracted position to the advanced position and is configured to cooperate with all the functional elements 14 except the functional element 14 of the second type in the transition from the advanced position to the retracted position; in other words, at the end of the transition from the advanced position to the retracted position guided by the control member 27, the functional element 14 of the second type remains in the advanced position.
  • control element 27 is engaged at the seat 19 of each functional element 14 and is therefore configured to cooperate with all the functional elements 14 so as to simultaneously guide the positioning of all the functional elements 14 with respect to the containment body 2.
  • control member is associated with the functional elements 14 and is configured to impart stresses thereon and cause the relevant effects thereof.
  • the control member 27 is inserted in the seat 19 of each functional element 14 so as to obtain a bilateral constraint between the control member 27 and the functional elements 14, so that a suitable movement of the control element 27 causes the movement of each functional element 14 between the retracted position and the advanced position or vice versa, according to the movement imparted to the control member 27.
  • control member 27 is shaped to cooperate with the abutment surface, or vice versa, to determine the transition of the functional element 14 between the retracted position and the advanced position.
  • the interfacing between the control member 27 and the abutment surface is similar to a monolateral constraint and makes the movement of the control member 27 in a specific direction cause the movement of the functional element 14 from the retracted position to the advanced position and instead the movement of the control member 27 in an opposite direction does not cause effects on the functional element 14 provided with an abutment surface and the functional element 14 of the second type is consequently completely immune to receiving thrusts in conjunction with this movement of the control member 27.
  • the control member 27 extends along a main development direction and has a first and a second longitudinal end 27a, 27b opposite each other with reference to the main development direction.
  • the control member 27 is a pin, which is engaged to the functional elements 14 at the respective seats 19.
  • the pin 27 has a circular profile and a substantially cylindrical shape.
  • the pin 27 may be counter-shaped to the seats 19, or vice versa, so that the pin 27 may easily cross the seats 19; the accompanying figures show a circular profile pin 27 and seats 19 also with a circular profile.
  • the contact assembly 1 further comprises an actuation element 28 configured to operate on the control member 27.
  • the actuation element 28 is operatively connected to the control member 27 and is configured to actuate the control member 27 between the rest condition, the operative condition and the guiding condition.
  • the actuation element 28 is configured to be suitably moved; the movement of the actuation element 28 allows moving the control member 27 between the rest condition and the operative condition, passing through the guiding condition, or vice versa, according to the direction of movement imparted to the actuation element 28.
  • the actuation element 28 is configured to be moved by rotation and is configured to in turn move the control member 27 from the rest condition to the operative condition or vice versa, depending on the direction of rotation imparted to the actuation element 28.
  • the actuation element 28 determines the transition of the control member 27 from the rest condition to the operative condition, or vice versa, guiding it into the guiding condition.
  • the actuation element comprises at least one seat 28a, 28b configured to house the control member 27 at least partially.
  • the seat 22, 23 is configured to house a portion of the control member 27, such as an end 27a, 20b of the control member 27.
  • the control member 1 comprises a first seat 28a and a second seat 28b spaced from each other and housing respectively the first end 27a and the second end 27b of the control member 27 (see figure 1 ).
  • the actuation element 28 may further comprise at least one lockable portion 28c.
  • the actuation element 28 may be moved manually and the direction of movement or the direction of rotation may be imparted manually to the actuation element 28.
  • the direction of movement or the direction of rotation imparted by the actuation element 28 to the control member 27 may correspond substantially to the direction of movement or the direction of rotation imparted to the actuation element 28.
  • the direction of movement or the direction of rotation of the control member 27 may differ from the direction of movement or from the direction of rotation imparted to the actuation element 28; for example, the direction of movement or the direction of rotation of the control member 27 may be transversal or substantially opposite to the direction of movement or the direction of rotation imparted to the actuation element 28.
  • a suitable kinematic mechanism may be provided.
  • the actuation element 28 is in the form of a handle and, as said above, the control member 27 is in the form of a pin.
  • the handle 28 comprises a gripping portion and is configured to rotate with respect to the containment body 2 so as to determine, by means of the control member 27, the transition of the functional elements 14 between the retracted position and the advanced position or vice versa, according to the direction of rotation imparted to the handle 28 itself by the handle portion.
  • the rotation direction may be imparted manually, for example by an operator, through the handle portion.
  • the handle 28 is configured to determine the transition of the functional elements 14 from the retracted position to the advanced position by rotating towards the jacket 4 and is also configured to determine the transition of the functional elements 14 from the advanced position to the retracted position by rotating away from the jacket 4.
  • the contact assembly 1 further comprises at least one selector 29', 29" adapted to manage the operative configuration of the actuation element 28.
  • the selector 29', 29" is also able to manage the operative configuration of the control element 27; this is possible because the control member 27 and the actuation element 28 are operatively connected to each other.
  • the selector 29', 29" is adapted to keep the control member 27 in the rest condition or to allow the actuation of the control member 27 in the guiding condition to allow the transition of the control member 27 between the rest condition and the operative condition, or vice versa.
  • the selector 29', 29" is configured to selectively operate on the actuation element 28 for example at least between an actuation element locking configuration, illustrated in figure 1, and an actuation element release configuration, illustrated for example in figures 3, 4, 9 and 10.
  • the selector 29', 29" prevents the actuation element 28 from actuating the control member 27, while in the actuation element release configuration the selector 29', 29" allows the actuation element to actuate the control member 27 to determine the advancement of at least one functional element 14 from the retracted position to the advanced position or to determine the retraction of at least one functional element 14 from the advanced position to the retracted position.
  • the selector 29', 29" may be movable, for example by rotation, between an actuation element locking position and an actuation element release position and vice versa.
  • the selector 29', 29" may be reversibly moved between the actuation element locking position and the actuation element release position. In the locking position of the actuation element the selector 29', 29" assumes the actuation element locking configuration, while in the release position of the actuation element the selector assumes the actuation element release configuration.
  • the selector 29', 29" allows the actuator element 28 to actuate the control member 27 to determine the advancement of all the functional elements 14 from the retracted position to the advanced position or to determine the retraction of all the functional elements 14, or all the functional elements 14 except one, from the advanced position to the retracted position.
  • the selector 29', 29” is configured to constrain the contact assembly 1, or the box 50 in which the contact assembly 1 is installed, to the containment housing 102.
  • the contact assembly 1 may comprise a first selector 29' and a second selector 29".
  • the first selector 29' and the second selector 29" operate respectively at the first end 27a and the second end 27b of the control member 27.
  • the first selector 29' and the second selector 29" may be moved, simultaneously or one after the other, mirror-like with each other and, upon reaching each operative configuration, the first selector 29' and the second selector 29" are arranged mirror-like with respect to each other.
  • the arrangement of both selectors 29', 29" in the same operative configuration allows the actuation element 28 to operate, as described in detail below, in release or locking on the functional elements 14.
  • the present invention relates to a use of the contact assembly 1 according to what described above and according to any one of the appended claims.
  • use of the contact assembly 1 in a junction box 50 for electrical installations of the prefabricated electric duct type 100 including one or more conductive bars 101 may be provided.
  • the use of the contact assembly 1 may be aimed at deriving electric current withdrawn through at least one functional element 14 or a plurality of functional elements 14 away from the contact assembly 1.
  • the present invention further relates to a method of connecting a contact assembly 1 to a prefabricated electric duct 100 including one or more conductive bars 101 and a method of disconnecting a contact assembly 1 from a prefabricated electric duct 100 including one or more conductive bars 101.
  • the contact assembly 1 may be of the type described above and, in addition or alternatively, it may be according to at least one of the preceding aspects and at least one of the appended claims.
  • connection method of a contact assembly 1 is described below.
  • the method provides for arranging a contact assembly 1 in which at least one functional element 14 is in a disconnection position, in which the first terminal 15 is operatively disconnected from the second terminal 16 and the connection portion 20 is spaced from the second terminal 16.
  • the method provides for moving at least one functional element 14 with respect to the second terminal 16 between the disconnection position and a connection position in which the first terminal 15 is operatively connected to the second terminal 16.
  • the step of moving at least one functional element 14 with respect to the second terminal 16 between the disconnection position and the position connection provides for spreading the first flap 23 and the second flap 24 of the clamp 22 and at least partially inserting the connection portion 20 of the functional element 14 in the internal space of the clamp 22 defined between the first flap 23 and the second flap 24.
  • the at least partial insertion of the connection portion 20 into the internal space of the clamp 22 providers for wedging at least partially the interposition end 21 of the connection portion 20 between the first flap 23 and the second flap 24 of the clamp 22, causing the spreading of the first and second flaps 23, 24.
  • the method may provide for positioning the contact assembly 1 with respect to the prefabricated electric duct 100, for example at a junction point.
  • the step of positioning the contact assembly 1 is prior to the movement of at least one functional element 14 with respect to the second terminal 16 between the disconnection position and the connection position.
  • the method may also provide for constraining the contact assembly 1 , after positioning it with respect to the prefabricated electric duct 100, to a containment housing 102 of conductive bars 101.
  • the step of moving at least one functional element 14 may provide for moving, for example simultaneously, all the functional elements 14 or all the functional elements 14 except one, so as to determine the insertion of all the connection portions 20 in the respective clamps 22 or of all the connection portions 20 except one in the respective clamps 22 and further determining the contact between all the second ends 15b of the first terminals 15 or all the second ends 15b except one to the respective conductive bars 101.
  • the method of disconnecting a contact assembly 1 from a prefabricated electric duct 100 is described below.
  • the method provides for arranging a contact assembly 1 in which at least one functional element 14 is in a connection position, in which the first terminal 15 is operatively connected to the second terminal 16 and the connection portion 20 is approached to and in contact with the second terminal 16.
  • the method provides for moving at least one functional element 14 with respect to the second terminal 16 between the connection position and the disconnection position so as to operatively disconnect the first terminal 15 from the second terminal 16.
  • the step of moving at least one functional element 14 with respect to the second terminal 16 provides for extracting at least partially the connection portion 20 of the functional element 14 from the internal space of the clamp 22 defined between the first flap 23 and the second flap 24 and approaching the first flap 23 and the second flap 24 of the clamp 22.
  • connection portion 20 from the clamp 22 allows the mutual approach between the first flap 23 and the second flap 24; as a result of the extraction of the connection portion 20, the first and second flaps 23, 24 automatically approach due to their elastic deformability.
  • the lips of the flaps 23, 24 may slide on or with respect to the sides of the connection portion 20; for example, the lips of the flaps 23, 24 may slide, respectively, on or with respect to the first and second thrust surface 21 a, 21 b of the interposition end 21.
  • the extraction of the connection portion 20 from the clamp 22 also allows freeing the internal space of the clamp 22 by removing the interposition end 21 outside the internal space of the clamp 22.
  • the step of movement of the functional element 14 with respect to the second terminal 16 is carried out by spacing the first terminal 15 from the respective conductive bar 101.
  • the method may further provide for releasing the contact assembly 1 from the containment housing 102 of conductive bars 101.
  • the release of the contact assembly 1 from the containment housing 102 is subsequent to the achievement, by the first terminal 15, of the disconnection position.
  • the release of the contact assembly 1 may be carried out by moving the selector 29', 29” from the actuation element release position to the actuation element locking position so as to free the previously constrained portion of the containment housing 102.
  • the method may provide for disengaging the contact assembly 1 from the containment housing 102; this step is subsequent to the step of release of the contact assembly 1.
  • the present invention relates to a use of a box 50 comprising a contact assembly 1 according to what described above and according to any one of the appended claims.
  • the box 50 may be adapted to be used as a junction box for electrical installations of the type with prefabricated electric ducts 100 including one or more conductive bars 101.
  • the box 50 comprises a box-like body 51 provided with a plurality of walls 51 a, 51 b, 51 c, 51 d, 51 e, 51f assembled together.
  • the box-like body 51 has an inner volume, inside which the contact assembly 1 is housed.
  • the inner volume of the box-like body 51 corresponds to the inner volume of the box 50.
  • the contact assembly 1 is engaged to the box-like body 51 so that the actuation element 28 develops at least partially outside the inner volume of the box 50.
  • the walls 51 a, 51 b, 51c, 51 d, 51 e, 51f comprise side walls 51 a, 51 b, 51 c, 51 d and bottom walls 51 e, 51f.
  • the side walls 51 a, 51 b, 51 c, 51 d comprise a first wall 51 a, a second wall 51 b, a third wall 51c and a fourth wall 51 d, which laterally delimit the inner volume of the box 50.
  • the first wall 51 a and the second wall 51 b are opposite and parallel to each other; in the same way, the third wall 51 c and the fourth wall 51 d are opposite and parallel to each other.
  • the third wall 51 c is interposed and transverse to the first and second walls 51 a, 51 b
  • the fourth wall 51 d is opposite to the third wall 51 c and is also interposed and transverse to the first and second walls 51 a, 51 b.
  • the third and fourth walls 51 c, 51 d have respective through holes which, in the assembled condition of the contact assembly 1 to the box 50 (see figures 9 and 10), allow the actuation element 28 to develop astride these walls 51c, 51 d.
  • the handle 28 develops partially inside the internal volume of the box 50 and partially (mainly) outside the internal volume of the box 50.
  • the bottom walls 51 e, 51 f comprise a first bottom wall 51 e and a second bottom wall 51f.
  • the first bottom wall 51 e and the second bottom wall 51f are respectively opposite to each other and transversely interposed, on opposite sides of the box-like body 51 , between the third and fourth walls 51 c, 51 d.
  • the first wall 51 a has a first opening 52.
  • the box-like body 51 also has a second opening 53.
  • the second opening 53 may be defined by the second wall 51 b or in the proximity of the second wall 51 b.
  • the contact assembly 1 and the box-like body 50 are assembled in such a way that the first opening 52 faces the through opening 6 of the base 3 to allow the connection of at least one functional element 14, in the advanced position, to the respective conductive bar 101.
  • the first opening 52 and the through opening 6 face each other so as to allow at least partial extraction of at least one functional element 14 from the inner volume of the box 50; in the advanced position of at least one functional element 14, the first opening 52 and the through opening 6 are crossed by the functional element 14 so that the second end 15b is arranged outside the box 50 (see figure 10) and inside the containment housing 102.
  • the box 50 also has a door 54 configured, according to its position, to close the second opening 53 or to make the second opening 53 accessible.
  • the door 54 is substantially configured to operate between a closed position, in which the second opening 53 occludes and prevents accessibility thereof, and an open position in which it allows accessibility to the second opening 53 and therefore to the inner volume of the box 50.
  • the closed position of the door 54 is shown for example in figure 10, while the open position of the door 54 is shown in figure 9.
  • the door 54 when arranged in the closed position, is configured to make the inner volume of the box 50 inaccessible from the outside of the box 50 itself. This inaccessibility of the inner volume of the box 50 with the door 54 closed is particularly advantageous in terms of the safety of the box 50 itself.
  • the door 54 is also configured to operate between a plurality of intermediate positions between the open position and the closed position; the door 54 assumes these intermediate positions in the transition between the open position and the closed position, and vice versa.
  • the door 54 is hinged to the fourth wall 51 d and the opening and closing of the door 54 takes place by rotation of the door 54 itself.
  • the door 54 when transitioning between the closed position and the open position, and vice versa, makes an angular excursion.
  • the door 54 may be configured to be moved by translation or by rotary-translation to make the second opening 53 accessible or occluded.
  • the door 54 may constitute, in the closed position, the second wall 51 b of the box-like body 51 of the box 50.
  • the door 54 may consist of a portion of the second wall 51 b, or of an additional wall, configured to be moved with respect to a fixed main portion of the second wall 51 b, or with respect to the second wall 51 b itself, to make the second opening 53 accessible or closed.
  • the box 50 further comprises a lockable flange 55.
  • the lockable flange 55 is adapted to allow the door 54 to be locked to the actuation element 28.
  • the locking of the door 54 is possible because, both in the closed position and in the open position of the door 54, the actuation element 28 develops outside the inner volume of the box 50.
  • the locking of the door 54 to the actuation element 28 allows the box 50 to be secured.
  • the lockable flange 55 is carried by the door 54 and is arranged in such a way that, in the closed position of the door 54, it faces a lockable portion 28c of the actuation element 28; in this regard, figure 10 shows a lockable flange 55 facing the lockable portion 28c.
  • the lockable flange 55 may have a through hole.
  • the through holes face each other to allow the locking of the door 54 to the actuation element 28.
  • the through hole of the lockable flange 55 may have a passage section comparable or equal to or smaller than the passage section of the through hole of the lockable portion 28c.
  • the box 50 further comprises a safety device 56.
  • the safety device 56 is configured to prevent movement of the actuation element 28 when the door 54 is in the open position. In the open position of the door 54, the safety device 56 is at least partially interposed between the actuation element 28 and the second opening 53 along a trajectory of movement of the actuation element 28. In this way, it is possible to prevent, with the door 54 open, the connection of the functional elements 14 to the respective conductive bars 101.
  • the safety device 56 is carried by the door 54 (see figure 10).
  • the safety device 56 is arranged outside the inner volume of the box 50 both in the closed position and in the open position of the door 54.
  • the safety device 56 is also configured to limit the opening angular excursion of the door 54 and to keep the door 54 in a predetermined open position.
  • the safety device 56 may be in the form of an interference tab movable integrally with the door 54 between an interference position and a release position; the release position is shown in figure 10.
  • the interference tab 56 prevents, by interference, in the open position of the door 54, the movement of the actuation element 28, while in the release position the interference tab 56 allows, in the closed position of the door 54, the movement of the actuation element 28.
  • the interference tab 56 then controls the transition of the functional elements 14 from the retracted position to the advanced position, making it possible, by releasing the actuation element 28, only in a desired condition, i.e. when the door 54 is in the closed position.
  • the interference tab 56 has a first section carried by the door 54 and a second section consecutive and transversal with respect to the first section. In the open position of the door 54, at least the second section may be interposed between the actuation element 28 and the second opening 53 along the trajectory of movement of the actuation element 28.
  • the box 50 may further comprise a slide configured to suitably position the box-like body 51 with respect to the containment housing 102 of a prefabricated electric duct 100.
  • the slide may be configured to determine a correct positioning of the box-like body 50 with respect to the containment housing 102 in a predetermined position, for example at a junction point.
  • the slide contributes with the positioning elements 13', 13” of the contact assembly 1 to position the contact assembly 1 with respect to the containment housing 102 and to the conductive bars 101 contained therein.
  • the present invention relates to the use of the box 50 according to what described above and according to the appended claims.
  • use of the box 50 as a junction box for electrical installations of the prefabricated electric duct type 100 including one or more conductive bars 101 may be provided.
  • the use of the box 50 may be aimed at deriving electric current withdrawn through at least one functional element 14 or a plurality of functional elements 14 outside the inner volume of the box 50.
  • the present invention allows obtaining a contact assembly which allows canceling, or at least minimizing, the malfunctions and faults to which the terminals 16 of a contact assembly are subject, suitable for housing or being connected to an electrical conductor, such as a cable.
  • the invention allows canceling the occurrence of fatigue phenomena and undesired mechanical stresses on the terminals 16 of a contact assembly 1 suitable for housing or being connected to an electrical conductor. This is possible by moving the first terminals 15, while the second terminals 16 are kept fixed in a predetermined position with respect to the containment body 2.
  • the invention allows considerably reducing the downtimes of installations of the type with prefabricated electric ducts 100.
  • the contact assembly 1 according to the present invention allows significantly reducing the maintenance costs of installations of the type with prefabricated electric ducts 100. These advantages are also applicable to the box 50 comprising the contact assembly 1 according to the invention.
  • the invention also provides a method for connecting the contact assembly 1 to a prefabricated electric duct 100, which is advantageous in that it makes it possible to connect the contact assembly 1 to conductive bars 101 avoiding undesired fatigue and mechanical stress phenomena on the terminals 16 of the contact assembly
  • the method for connecting the contact assembly 1 to a prefabricated electric duct 100 therefore allows a contact assembly 1 to be connected reliably, safely and repeatably to conductive bars 101 housed inside the containment housing 102.
  • the invention also provides a method for disconnecting the contact assembly 1 from a prefabricated electric duct 100, which is advantageous in that it makes it possible to disconnect the contact assembly 1 from conductive bars 101 avoiding undesired fatigue and mechanical stress phenomena on the terminals 16 of the contact assembly 1 suitable for housing or being connected to an electrical conductor.

Landscapes

  • Connection Or Junction Boxes (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Manufacture Of Switches (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Abstract

La présente invention concerne un ensemble contact (1) comprenant un corps de confinement (2) et au moins un élément fonctionnel (14) approprié pour retirer un courant électrique d'une barre conductrice (101). L'ensemble de contact (1) comprend au moins une première borne (15) portée par l'élément fonctionnel (14) et configurée pour mettre en œuvre la connexion de l'élément fonctionnel (14) à la barre conductrice respective (101) et au moins une deuxième borne (16) mise en prise avec le corps de confinement (2) et apte à loger, ou à être connecté à, un conducteur électrique destiné à transporter le courant électrique retiré à travers l'élément fonctionnel (14) à l'opposé de l'ensemble de contact (1). L'élément fonctionnel (14) est mobile par rapport à la seconde borne (16) entre une position de connexion dans laquelle la première borne (15) est connectée fonctionnellement à la seconde borne (16) et une position de déconnexion dans laquelle la première borne (15) est déconnectée fonctionnellement de la seconde borne (16).
PCT/IB2020/055082 2019-05-29 2020-05-28 Ensemble contact pour boîte de jonction WO2020240471A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102019000007524A IT201900007524A1 (it) 2019-05-29 2019-05-29 Assieme di contatto per cassetta di derivazione
IT102019000007524 2019-05-29

Publications (1)

Publication Number Publication Date
WO2020240471A1 true WO2020240471A1 (fr) 2020-12-03

Family

ID=67998630

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2020/055082 WO2020240471A1 (fr) 2019-05-29 2020-05-28 Ensemble contact pour boîte de jonction

Country Status (2)

Country Link
IT (1) IT201900007524A1 (fr)
WO (1) WO2020240471A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2059987A (en) * 1935-03-25 1936-11-03 William H Frank Electrical distribution system
FR1166395A (fr) * 1957-02-18 1958-11-05 Telemecanique Electrique Coffret de branchement pour canalisations électriques
WO2019008462A1 (fr) * 2017-07-04 2019-01-10 IAM Industrial Asset Management S.r.l. Boîte de jonction pour installations électriques du type à conduits électriques préfabriqués

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2059987A (en) * 1935-03-25 1936-11-03 William H Frank Electrical distribution system
FR1166395A (fr) * 1957-02-18 1958-11-05 Telemecanique Electrique Coffret de branchement pour canalisations électriques
WO2019008462A1 (fr) * 2017-07-04 2019-01-10 IAM Industrial Asset Management S.r.l. Boîte de jonction pour installations électriques du type à conduits électriques préfabriqués

Also Published As

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