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WO1988003700A1 - Procede de production de condensateurs et notamment d'un condensateur anti-explosion lie par une resine, avec plaque a bornes et organe de fixation externe - Google Patents

Procede de production de condensateurs et notamment d'un condensateur anti-explosion lie par une resine, avec plaque a bornes et organe de fixation externe Download PDF

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Publication number
WO1988003700A1
WO1988003700A1 PCT/IT1987/000031 IT8700031W WO8803700A1 WO 1988003700 A1 WO1988003700 A1 WO 1988003700A1 IT 8700031 W IT8700031 W IT 8700031W WO 8803700 A1 WO8803700 A1 WO 8803700A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal board
half shells
tangs
diaphragm
explosion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IT1987/000031
Other languages
English (en)
Inventor
Lucio Venturini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ducati Energia SpA
Original Assignee
Ducati Energia SpA
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 Ducati Energia SpA filed Critical Ducati Energia SpA
Publication of WO1988003700A1 publication Critical patent/WO1988003700A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/224—Housing; Encapsulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/14—Protection against electric or thermal overload

Definitions

  • the present invention relates to a method for producing capacitors and respective resin-bonded explosion-preventing capacitor with terminal board and eaxternal means of attachment.
  • the second type foresees instead a p rt which bends towards the outside (generally a respective cover) which has the respective electric connections fi ed to its centre in such a provokeay that its respective bending obtains the said Jerk.
  • the second solution is less complicated and less expensive and n ⁇ s it possible to realize the capacitors with a casing- entirely in plastic. Therefore the cost is even .ore conta.ned, and the capacitors are of excellent ,uality and certainly better insulated from the outside.
  • the last solution makes it impossible to resin-bond the capacitive body unless another containing shell is realized, except that a second containing shell becomes in any case an obstacle to the propagation of the pressure increase and the advantage of the hollow space such as the suggested air chamber becomes ineffective.
  • the scope of the invention is to eliminate the above-mentioned inconveniences and to conceive a capacitor which ' possesses all the optimal requisites for this specific use.
  • the present invention solves the problem by realizing a capacitor of the type having a shell in plastic material containing the capacitive body in solidified resin, ' having means of attachment to a support at the base and means of connection to a terminal board at the top, in which: the resin-bonding of the capacitive body is actuated separately, realizing a preassembly which has an inside container composed of flexible, yielding material which can be compressed in its thickness; - the casing shell is realized by welding two half shells of semicylindrical shape composed of a semi-base and a semi-cover thus realizing, by welding, a complete means of closure with said means of attachment to a support at the base and means of fixing and containing of the respective terminal board tangs at the top as the half shells are equipped internally with a corresponding semicircular rib;
  • the said internal casing shell of the capacitive body with the solidified resin is conveniently coc posed of an interspace.
  • Said diaphragm advantageously presents a bell shape with a deflecting, central portion which, on the capacitive body side, has a sliding means of coupling for at least one electric connection wire welded to the capacitive body and the respective connection wires are clamped and rigidly welded to the outside of this area during the welding of the half shells through the union line between the respective fixing rib for the said diaphragm.
  • Figure 1 shows an axial section on the union plane for welding of the respective half shells of a capacitor as per the invention with a sole capacitive body incorporated in it;
  • Figure 2 shows a top view of a cross section X - X above the diaphragm (3) of the version of the capacitor according to the previous figure;
  • Figure 3 shows an enlarged section of a portion of the covering material of the capacitive body and of the plastic covering sheath realized by welding the half shells.
  • the capacitor consists of a capacitive body (7) immersed in solidified resin (6) in an air chamber (5 1 ) made of a container of thin, flexible plastic material (5) to be inserted in a second container or external shell realized by welding two half shells in plastic material (4) so that the transmission of the overpressure due to short circuiting in the upper explosion-preventing chamber (C) is not obstacled.
  • the chamber (C) bears the explosion-preventing device realized by a diaphragm of yielding, plastic material (3) with a central part which deflects towards the outside (3') and is able to drag by means of a passing hole (3'") at least one respective wire (1) with it and thus break the circuit.
  • the air bubbles (5 1 ) of the first covering (5) determine an air chamber for points (8) between the outside surface of the resin container (5) and the outside containing shell (4).
  • the . transmission of the increase in pressure to the explosion-preventing chamber (c) is thus favoured.
  • the counter chamber (c 1 ) need not necessarily be sealed as it has the sole function of space for the bending of the diaphragm and to contain the terminal board connections.
  • the wires (1,2) have the covering sheath gripped between corresponding ribs (4' ) which keep it in a fixed position during the respective welding phase of the half shells and then along the respective union and welding line (s) of the half shells (4).
  • the said welding of the half shells is also able to weld the respective covering sheath of the electric wires (1,2).
  • the same internal rib (4* ) of the half shells (4) which grips the wires (1,2) also fixes the respective explosion-preventing diaphragm (3) thus realizing the seal in the respective circular fixing seat (4 1 ).
  • An explosion-preventing chamber (c) will then ob obtained at the side of the capacitive body (7) and an unsealed counter chamber (c 1 ) on the opposite side, under the corresponding terminal board (4", 10).
  • the terminal board seat (4") is obtained directly by molding on the respective half shells (4) so that the structure shown in the figures is obtained upon assembly.
  • the terminal tangs of the terminal board (10) are clamped in the apposite fixing seats foreseen in the respective semi-seat of the terminal board (4") of a corresponding half shell (4) and similar fixing seats for the welded wires are foreseen with inside fins (i).
  • thermoplastic material (4) are separately molded with respective semicircular ribs (4') in order to fix the diaphragm (3) with a notch to seat the wires (1,2), a semi-cover with semi-seat for the terminal board (4") and a semi-base with means of fastening (4'");
  • the respective discoid,bell-shaped diaphragm (3) is separately molded in flexible and/or yielding plastic material equipped with an anular edge with female fixing notch, and a central portion which deflects towards the outside (3' ) having beneath it a hole or hook (3") which receives one or more wires which are torn out during the deflecting movement by the respective contact of a capacitive body (7);
  • a preassembly which consists of: the capacitive body immersed in liquid resin (6) contained in an initial sheath of thin, flexible plastic material ( ' 5) of air bubbles (5') and left to polymerize while solidifying, it having been foreseen that the free ends of the wires are spot-welded to the respective tangs of the terminal board (10) with the expedient ⁇ that the wire of the upper connection (1) is passed through the corresponding means of clamping (3") of the deflectible portion (3 1 ) of said diaphragm (3);
  • this preassembly is clamped between the half shells (4) and care is taken to fix in the corresponding notches the respective terminal board tangs (10) and the corresponding wires to be locked (1,2) in the fixing rib (4') which will also clamp the respective diaphragm (3) by anular fixing;
  • the two half shells are ultra-sonic welded.
  • the finished capacitor is thus realized, complete with all the accessories rigidly fastened internally and without mobile parts on the outside.
  • said diaphragm (3) is conveniently equipped with juts pointing towards the capacitive body (3"') so as to fasten it and prevent eventual mobility.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

Le procédé décrit sert à produire des condensateurs et notamment un condensateur du type comportant un boîtier en matériau plastique (4), qui contient le corps capacitif (7) en résine solidifiée (6), et comprenant un organe de fixation servant à fixer ledit condensateur à un support (4''') au niveau de la base et un organe de connexion servant à le connecter à une plaque à bornes à l'aide de languettes (10) au niveau de la partie supérieure. Dans ledit procédé, la liaison du corps capacitif par la résine est effectuée de façon séparée, ce qui permet de réaliser un préassemblage ayant un récipient interne constitué d'un matériau flexible, élastique et compressible en épaisseur (5); le boîtier contenant le corps capacitif est obtenu par soudage de deux demi-enveloppes de forme cylindrique (4), dont l'une devient le couvercle (4'') et l'autre la base (4'''), ce qui permet d'obtenir par soudage un organe de fermeture complet comportant ledit organe de fixation, qui permet de fixer ledit condensateur à un support (4''') au niveau de la base, et un organe assurant la fixation et formant une enveloppe (4'') au niveau de la partie supérieure des languettes (10) qui se fixent à la plaque à bornes correspondante, étant donné que les demi-enveloppes sont pourvues à l'intérieur de cannelures semi-circulaires correspondantes (4'); ledit condensateur comprend en outre un diaphragme à fonction anti-explosion (3) qui est enfermé et fixé à l'intérieur entre lesdites demi-enveloppes (4) au moyen desdites cannelures semi-circulaires (4'), ce qui permet d'obtenir d'une part une chambre antiexplosion, qui est fermée hermétiquement par pression interne (c) sur le côté intérieur du boîtier du corps capacitif lié par la résine et au-dessus de celui-ci, et d'autre part une chambre opposée sur l'autre côté, laquelle n'est pas fermée hermétiquement (c').
PCT/IT1987/000031 1986-11-14 1987-04-09 Procede de production de condensateurs et notamment d'un condensateur anti-explosion lie par une resine, avec plaque a bornes et organe de fixation externe Ceased WO1988003700A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT83439/86A IT1201826B (it) 1986-11-14 1986-11-14 Metodo di produzione di condensatori e rispettivo condensatore resinato antiscoppio con morsettiera e mezzi di attacco esterni
IT83439A/86 1986-11-14

Publications (1)

Publication Number Publication Date
WO1988003700A1 true WO1988003700A1 (fr) 1988-05-19

Family

ID=11321907

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT1987/000031 Ceased WO1988003700A1 (fr) 1986-11-14 1987-04-09 Procede de production de condensateurs et notamment d'un condensateur anti-explosion lie par une resine, avec plaque a bornes et organe de fixation externe

Country Status (3)

Country Link
AU (1) AU7302487A (fr)
IT (1) IT1201826B (fr)
WO (1) WO1988003700A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2629254A1 (fr) * 1988-03-25 1989-09-29 Ducati Energia Spa Condensateur a bornes incorporees dans la coque de contention de matiere plastique
EP0610589A1 (fr) * 1993-01-28 1994-08-17 ROEDERSTEIN SPEZIALFABRIKEN FÜR BAUELEMENTE DER ELEKTRONIK UND KONDENSATOREN DER STARKSTROMTECHNIK GmbH Condensateur électrique avec coupe-circuit en cas de surpression

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1035126A (fr) * 1951-04-06 1953-08-17 Boîtier pour condensateur
EP0023543A2 (fr) * 1979-08-01 1981-02-11 Licentia Patent-Verwaltungs-GmbH Condensateur électrique inexplosible comportant un dispositif de coupe-circuit
US4260850A (en) * 1980-02-22 1981-04-07 Western Electric Company, Inc. Box for encasing an electrical device
DE3231864A1 (de) * 1982-08-26 1984-03-01 Ero-Starkstrom Kondensatoren Gmbh, 8300 Landshut Elektrischer becherkondensator mit ueberdruck-abschaltsicherung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1035126A (fr) * 1951-04-06 1953-08-17 Boîtier pour condensateur
EP0023543A2 (fr) * 1979-08-01 1981-02-11 Licentia Patent-Verwaltungs-GmbH Condensateur électrique inexplosible comportant un dispositif de coupe-circuit
US4260850A (en) * 1980-02-22 1981-04-07 Western Electric Company, Inc. Box for encasing an electrical device
DE3231864A1 (de) * 1982-08-26 1984-03-01 Ero-Starkstrom Kondensatoren Gmbh, 8300 Landshut Elektrischer becherkondensator mit ueberdruck-abschaltsicherung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2629254A1 (fr) * 1988-03-25 1989-09-29 Ducati Energia Spa Condensateur a bornes incorporees dans la coque de contention de matiere plastique
EP0610589A1 (fr) * 1993-01-28 1994-08-17 ROEDERSTEIN SPEZIALFABRIKEN FÜR BAUELEMENTE DER ELEKTRONIK UND KONDENSATOREN DER STARKSTROMTECHNIK GmbH Condensateur électrique avec coupe-circuit en cas de surpression

Also Published As

Publication number Publication date
IT1201826B (it) 1989-02-02
IT8683439A0 (it) 1986-11-14
AU7302487A (en) 1988-06-01

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