WO2008152659A1 - Support de montage pour coffret électrique - Google Patents

Support de montage pour coffret électrique Download PDF

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Publication number
WO2008152659A1
WO2008152659A1 PCT/IT2007/000414 IT2007000414W WO2008152659A1 WO 2008152659 A1 WO2008152659 A1 WO 2008152659A1 IT 2007000414 W IT2007000414 W IT 2007000414W WO 2008152659 A1 WO2008152659 A1 WO 2008152659A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal
anchoring
profiles
longitudinal element
support element
Prior art date
Application number
PCT/IT2007/000414
Other languages
English (en)
Inventor
Pierangelo Rota
Original Assignee
Pierangelo Rota
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 Pierangelo Rota filed Critical Pierangelo Rota
Priority to PCT/IT2007/000414 priority Critical patent/WO2008152659A1/fr
Publication of WO2008152659A1 publication Critical patent/WO2008152659A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
    • H02B1/32—Mounting of devices therein

Definitions

  • the present invention concerns ⁇ support element that can be combined with equipment for electrical switchboards and relative manufacturing process.
  • the support element according to the present invention is suitable for use as an accessory in the assembly of metal cabinets for electrical switchboards.
  • said support elements develop mainly lengthways and are of modular type, i.e. they have standard dimensions for coupling with metal cabinets which also have standardised dimensions.
  • these types of support element are called "modular guides".
  • the modular guides can be used in various sectors, for example in the sector of metal furnishings, but the typical field of application is that of electrical systems, and in particular the sector relative to assembly of cabinets for domestic and industrial electrical system switchboards.
  • Common electrical systems consist of various electrotechnical components such as, for example, cables, distribution panels, circuit breakers, remote switches, relays, voltmeters, ammeters, transformers, resistances etc., which distribute the electricity, in a controlled manner, to the user equipment, for example motors, electronic machines, household electrical appliances, etc.
  • the electrotechnical and electronic components are often housed in metal cabinets. It must be possible to organise the space inside said cabinets according to requirements, or according to the dimensions of the electrotechnical components, for example transformers, circuit breakers and relays.
  • the modular guides can be coupled to the structure of a cabinet in various positions, thus permitting optimisation of the space inside the cabinet according to the dimensions of the devices to be housed, or according to the path of the electrical cables.
  • the traditional modular guides comprise a longitudinal metal element, for example a section bar, and at least one bracket (also called "plate") coupled to the longitudinal element at one end.
  • the modular guides comprise two brackets, each connected at one end of the longitudinal element. The brackets have the function of anchoring the longitudinal element to the structure of the metal cabinet.
  • the longitudinal element can be an aluminium section bar, obtained by extrusion, having a generic C- shaped section, and the anchoring brackets (plates) can be obtained by pressing of a galvanised iron sheet.
  • the brackets Once coupled to the longitudinal element, the brackets extend in a direction substantially perpendicular to the length of the longitudinal element.
  • each bracket can be fixed to an upright of a cabinet, setting the longitudinal element to a horizontal position, or the brackets can be fixed to the same upright of the cabinet, setting the longitudinal element to a vertical position.
  • coupling of the brackets to the longitudinal element requires at least one fixed joint.
  • each bracket is forced into a recess provided at the relative end of the longitudinal element.
  • the anchoring brackets are coupled to the longitudinal element by means of a fit coupling without play.
  • the insertion of a bracket into the recess of the sheet metal element can be performed manually or automatically by means of appropriate machines.
  • the brackets can be glued, screwed etc. to the longitudinal element.
  • a disadvantage of the traditional modular guide assembly method is that it requires time and this negatively affects production costs. Coupling between a bracket and one of the free ends of the longitudinal element requires correct alignment of the parts, locking of the longitudinal element and the application of a pre-defined force on the bracket. The need to minimise assembly times has been felt for some time now.
  • a further disadvantage of the solutions used so far is the fact that the stability of the forced coupling between the lateral brackets and the longitudinal element can be insufficient in the worst operating conditions to which the modular guide may be subject.
  • the bracket-longitudinal element coupling may partially yield under the prolonged action of cyclic thermal stress, giving rise to undesired mechanical play between the parts.
  • the object of the present invention is to make available a support element for equipment of domestic and/or industrial systems, and relative manufacturing process, which simply and effectively solve the drawbacks of the traditional solutions.
  • a further object of the present invention is to make available a support element for equipment of domestic and/or industrial systems, in particular a support guide for the electrical/electromechanical, electronic etc. components housed in electrical switchboard cabinets, which is easy to assemble and resistant to thermal and mechanical stress.
  • a further object of the present invention is to make available a process for the manufacture of support elements for the electrical/electromechanical, electronic etc. components of electrical switchboard cabinets, which minimises assembly/production times and costs, at the same time guaranteeing high quality of the finished support elements.
  • the support element comprises at least one longitudinal element and at least one bracket which extends from one end of the longitudinal element for anchoring to the structure of a cabinet.
  • the longitudinal element in turn comprises at least two metal profiles mechanically coupled to each other, for example two halves which, once joined in their lengthways direction, constitute the longitudinal element, and the anchoring bracket is integral with one of said metal profiles.
  • the anchoring bracket is not a component separate from the longitudinal element and coupled to it during assembly of the support element; on the contrary, the bracket is integral with one of the metal profiles.
  • the longitudinal element comprises a first metal profile and a second metal profile made permanently integral with each another.
  • the support element comprises two anchoring brackets, each of which is integral with the first metal profile, i.e. it is made in one piece with it, and extends from one of its ends in a transverse direction with respect to the length of the longitudinal element.
  • a second embodiment of the support element provides for a first anchoring bracket integral with the first metal profile and a second anchoring bracket integral with the second metal profile.
  • the anchoring brackets extend from one end of the respective metal profile in a transverse direction with respect to its length.
  • the anchoring brackets extend crosswise to said element, on opposite sides with respect to it or on the same side.
  • the coupling between the metal profiles, both for the first and the second embodiment of the present invention is preferably chosen on the basis of low cost and practicality. For example, it must be possible to perform the coupling rapidly, simply and at minimum cost.
  • the metal profiles are coupled by means of the "Tox" system, i.e. by overlapping one profile on the other and lowering a punch onto them which plastically deforms the two profiles, obtaining "seal" buttons.
  • the metal profiles and the anchoring brackets are obtained by pressing and/or bending metal sheets, for example by means of successive pressing phases.
  • the coupling between the metal profiles can be performed during two successive pressing phases.
  • the anchoring brackets can be obtained by bending the relative end portion of one of the metal profiles.
  • the coupling between the metal profiles can be performed after the production of each profile.
  • the support element can be produced with different metal materials, for example aluminium, galvanised iron, steel.
  • the profiles that make up the longitudinal element are made of a metal suitable for pressing or bending and which, at the same time, can be welded, riveted, clinched, seamed, glued, buttoned etc.
  • the present invention furthermore concerns a process according to claim 6 for the manufacture of support elements that can be connected ⁇ o the structure of electrical switchboard cabinets.
  • the process comprises the phase of mechanically coupling at least two metal profiles, lengthways, to form a longitudinal element, and the phase of bending at least one end portion of at least one of the profiles to form a bracket for anchoring to external structures.
  • the process provides for a phase of bending an end portion of each metal profile, obtaining two profiles, each provided with an anchoring bracket that extends in an L shape from one end.
  • the process provides for a phase of bending both the end portions of only one of the two metal profiles. In this way a single profile will be provided with two anchoring brackets and the second profile serves to reinforce the first one. Bending of the anchoring brackets is preferably performed before coupling of the metal profiles to each other.
  • the support element according to the present invention is applied, in general, in equipment for electrical switchboards for the support of electrical, electronic, electromechanical and electrotechnical elements.
  • the support element can be used as a modular guide for electrical cables in electrical switchboards of domestic and/or industrial systems.
  • the length of the metal profiles corresponds to the modularity standard established for metal cabinets of electrical switchboards. In other words, the metal profiles are cut according to lengths corresponding to the standards in use for said equipment.
  • the anchoring brackets are obtained by bending one end of a profile, the length of said profile takes account of the final overall dimensions of the brackets.
  • the modular guide can be arranged inside an electrical switchboard connecting the anchoring brackets to the structure of the cabinet for example by tightening said brackets to the uprights of the cabinet.
  • the support element according to the present invention has a plurality of advantages with respect to the traditional solutions. Firstly, the support element is assembled more quickly than the traditional solutions. The reciprocal coupling of the metal profiles requires much less time than coupling of the brackets to the longitudinal element of a traditional modular guide. Secondarily, the manufacturing costs of the support element according to the present invention are lower than in the traditional solutions, in which the anchoring brackets have to be slotted into the longitudinal element, negatively affecting costs.
  • a further advantage is represented by the fact that the structural rigidity of the support element according to the present invention is greater than that of the modular guides available on the market. Due to the fact that the anchoring brackets are integral with the relative metal profile and not slotted into the longitudinal element, the resistance of the assembly to mechanical and/or thermal stress is maximised. BRIEF DESCRIPTION OF THE FIGURES
  • FIG. 1 is a lateral view of a traditional support element, in a pre-assembled configuration
  • figure 2 is a lateral view of a traditional support element, assembled
  • figure 3 is a frontal view of the support element shown in figure 2
  • - figure 4 is a lateral view of a first embodiment of a support element according to the present invention, in a pre-assembled configuration
  • figure 5 is a lateral view of the first embodiment of the support element according to the present invention, assembled
  • - figure 6 is a lateral view of a second embodiment of a support element according to the present invention, in a pre-assembled configuration
  • figure 7 is a lateral view of the second embodiment of the support element according to the present invention, assembled.
  • Figure 1 shows a traditional modular guide T which can be connected to the structure of equipment for electrical switchboards.
  • the guide T comprises a longitudinal element I T, the length of which corresponds to the modularity standard established for electrical switchboard cabinets, and two lateral anchoring brackets 12' and 13'.
  • figure 1 shows the guide T in a pre-assembled configuration, with the brackets 12' and 13' separate from the longitudinal element I T.
  • the longitudinal element I T is an aluminium section bar and the brackets 12' and 13' are made of galvanised iron.
  • Figure 2 shows the modular guide in an assembled configuration, with the brackets 12' and 13' coupled to the longitudinal element I T which develops in direction X.
  • the coupling between the brackets 12', 13' and the element I T is obtained during assembly of the guide T, forcing said brackets 12', 13' into grooves obtained at the ends of the element I T.
  • Figure 3 is a frontal view of the guide V, with the anchoring bracket 12' slotted into the longitudinal element 11'.
  • the brackets 12' and 13' permit fixing of the modular guide T to the structure of equipment for electrical switchboards.
  • the brackets 12' and 13' can be screwed to two uprights of an electrical switchboard cabinet.
  • the forced coupling of the brackets 12' and 13' to the longitudinal element I T is costly, impractical and time consuming.
  • FIGS 4 and 5 show a support element 1 according to an embodiment of the present . invention, for arrangement in the supporting structures of electrical switchboards for domestic and/or industrial use, for example as modular guide for supporting electrical, electronic, electrotechnical and electromechanical components and electrical cables.
  • the supporting element 1 comprises a longitudinal element 11 which in turn is formed of at least two metal profiles 11A and H B connected permanently one to the other to form one single longitudinal structure, i.e. which develops mainly in direction X.
  • At least one of the metal profiles HA and H B is provided with an anchoring bracket 12 or 13 made in one piece.
  • the support element 1 is provided with at least one anchoring bracket 12 or 13 integral with one of the metal profiles 11 A or 11 B which form the longitudinal element 11.
  • the support element 1 comprises two anchoring brackets 12 and 13, which each extend from one end of the relative metal profile 11A and H B and are preferably obtained by pressing or bending of a portion of the relative profile.
  • the bracket 12 is integral with the profile H B and the bracket 13 is integral with the profile HA.
  • the brackets 12 and 13 shown are arranged at right angles with respect to the respective profile HA, 11 B, but in general the direction of the brackets is transverse with respect to the direction X with angles and forms varying according to requirements.
  • the profiles HA and HB are shown in figure 4 separate, in a pre- assembly configuration of the support element 1. Said profiles HA and H B are shown coupled in figure 5. The coupling of the profiles HA and 11 B allows said overlapped components to be joined permanently, so as to form one single longitudinal structure 11.
  • Figures 6 and 7 show an alternative embodiment of the support element 2 according to the present invention, in which one single metal profile 21 B is provided with two brackets 22, 23 each of which extends from one end.
  • figure 6 shows the first metal profile 21 B and the second metal profile 21 A separate, in pre-assembly configuration of the support element 2.
  • Figure 7 shows the profiles 21 A and 21 B coupled, i.e. overlapped and joined to form one single longitudinal element 21.
  • the profiles 11 A, H B, 21 A, 21 B are made of aluminium or galvanised iron, resistant to corrosion. In general, however, they can be used with other metal materials, for example sheet metal of the type used for the production of electrical components.
  • the profiles HA, H B, 21 A, 21 B can be obtained from extruded parts or from sheet metal that has been appropriately machined, for example pressed. According to the preferred embodiment of the present invention, the profiles HA, H B, 21 A, 21 B are obtained from metal sheets which undergo pressing in dies. Unlike the known technique, the brackets 12, 13, 22, 23 are not separate from the longitudinal element, but are part of one of the profiles that form the longitudinal element 11 or 21. During machining of the sheet metal for manufacture of the profiles HA, HB, 21 A, 21B, the anchoring brackets 12, 13, 22, 23 are also produced. In a subsequent pressing and/or bending phase, the brackets 12, 13, 22, 23 are positioned as shown in figures 4-7.
  • Coupling between the profiles 11 A-I I B and 21A-21 B is advantageously performed rapidly and at minimum cost.
  • the technique for coupling said profiles is chosen from welding, riveting, clinching, seaming, gluing, buttoning or a combination thereof.
  • the metal profiles 11 A-I I B and 21A-21B are coupled by means of the Tox system, or by overlapping the profile 11 B with the profile HA, and profile 21 B with the profile 21 A, and punching both profiles, causing plastic deformation of the respective surfaces which penetrate each other at least partly.
  • Said phase can be performed during pressing of the profiles, HA, H B, 21 A, 21 B, with evident positive effects in terms of manufacturing and assembly costs and times of the element 1 or 2.
  • the Tox system therefore produces a sort of "button" between the metal sheets of two overlapped profiles.
  • coupling of the profiles HA-I l B and 21A-21 B can be performed separately from the pressing process, after each profile has been produced.
  • Figure 5 and figure 7 show the profiles HA-I lB and 21A-21B respectively, securely coupled by means of three TOX points.
  • the number of TOX points can be different, for example two or four, and will depend on the length of the profiles 11 A-11 B and 21 A-21 B and on the stress they have to withstand.
  • the profiles 11 A-I l B and 21A-21 B can be glued, riveted, seamed etc. at several points.
  • the seal of the TOX points is sufficient to guarantee optimal mechanical resistance to the static loads and thermal cycles.
  • the support element 1 , 2 as shown in figures 5 and 6 is ready for use as a structural element for electrical switchboards, in particular for the support of electrical, electronic and electromechanical elements, and as modular guide for electrical cables in structures used as electrical switchboards, for example in domestic and/or industrial systems.
  • the brackets 12, 13, 22, 23 permit anchoring of the assembly to an external structure, for example to the structure of a metal cabinet of the type commonly used to house electrical/electromechanical and electronic components of electrical switchboards.
  • the brackets 12, 13, 22, 23 permit anchoring of the longitudinal element 11, 21 in both the vertical and horizontal position.
  • the support element (modular guide) 1 , 2 can be produced much more quickly than the traditional solutions.
  • the coupling of the profiles 11 A-I I B and 21A-21 B to each another is performed during production of the profiles and the brackets 12, 13, 22, 23 are integral with the respective profiles.
  • the advantages in terms of time also permit minimisation of the production costs of the modular guides 1, 2, while maintaining high quality standards.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Patch Boards (AREA)

Abstract

La présente invention concerne un élément de support qui peut être connecté à la structure de coffrets de distributeur d'alimentation électrique, en particulier un guide modulaire pour le support d'éléments électriques, électroniques, électrotechniques et électromécaniques et de câbles électriques dans les coffres de distributeur d'alimentation électrique faisant partie d'installations domestiques et/ou industrielles. L'élément de support comprend au moins un élément longitudinal et au moins une fixation qui sort d'une extrémité de l'élément longitudinal pour se fixer à la structure d'un coffret. Cet élément longitudinal a pour avantage de comprendre à son tour au moins deux profils métalliques mécaniquement couplés l'un à l'autre, par exemple, par le biais d'une soudure, d'un rivetage, d'un clinchage, d'une couture, d'un collage ou de combinaisons de ces procédés. Les fixations d'ancrage font partie intégrante d'un des profils métalliques et elles sont obtenues en pliant/pressant le profil relatif.
PCT/IT2007/000414 2007-06-12 2007-06-12 Support de montage pour coffret électrique WO2008152659A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IT2007/000414 WO2008152659A1 (fr) 2007-06-12 2007-06-12 Support de montage pour coffret électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2007/000414 WO2008152659A1 (fr) 2007-06-12 2007-06-12 Support de montage pour coffret électrique

Publications (1)

Publication Number Publication Date
WO2008152659A1 true WO2008152659A1 (fr) 2008-12-18

Family

ID=39092168

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2007/000414 WO2008152659A1 (fr) 2007-06-12 2007-06-12 Support de montage pour coffret électrique

Country Status (1)

Country Link
WO (1) WO2008152659A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5386959A (en) * 1988-12-14 1995-02-07 Erico International Corporation Box support
DE29605230U1 (de) * 1996-03-20 1996-08-22 Siemens AG, 80333 München Montagevorrichtung für einen Schaltschrank
US20010037894A1 (en) * 2000-01-14 2001-11-08 Jurgen Zachrai Device for fastening a support rail on frame legs of a rack of a switchgear cabinet
US20050121558A1 (en) * 2003-12-03 2005-06-09 Universal Formations, Inc. Bracket assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5386959A (en) * 1988-12-14 1995-02-07 Erico International Corporation Box support
DE29605230U1 (de) * 1996-03-20 1996-08-22 Siemens AG, 80333 München Montagevorrichtung für einen Schaltschrank
US20010037894A1 (en) * 2000-01-14 2001-11-08 Jurgen Zachrai Device for fastening a support rail on frame legs of a rack of a switchgear cabinet
US20050121558A1 (en) * 2003-12-03 2005-06-09 Universal Formations, Inc. Bracket assembly

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