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EP0161341B1 - Dispositif pour fixer et réaliser des contacts pour transducteurs piézo-électriques cylindriques - Google Patents

Dispositif pour fixer et réaliser des contacts pour transducteurs piézo-électriques cylindriques Download PDF

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Publication number
EP0161341B1
EP0161341B1 EP84115417A EP84115417A EP0161341B1 EP 0161341 B1 EP0161341 B1 EP 0161341B1 EP 84115417 A EP84115417 A EP 84115417A EP 84115417 A EP84115417 A EP 84115417A EP 0161341 B1 EP0161341 B1 EP 0161341B1
Authority
EP
European Patent Office
Prior art keywords
contact
clamping part
transducer carrier
contacting
elements
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.)
Expired
Application number
EP84115417A
Other languages
German (de)
English (en)
Other versions
EP0161341A3 (en
EP0161341A2 (fr
Inventor
Ingolf Dipl.-Ing.(Fh) Depta
Wilfried Dipl.-Ing. Kindler
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0161341A2 publication Critical patent/EP0161341A2/fr
Publication of EP0161341A3 publication Critical patent/EP0161341A3/de
Application granted granted Critical
Publication of EP0161341B1 publication Critical patent/EP0161341B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14201—Structure of print heads with piezoelectric elements
    • B41J2/1429—Structure of print heads with piezoelectric elements of tubular type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2002/14362—Assembling elements of heads

Definitions

  • the invention relates to a device for fixing and contacting drive elements designed as piezo tubes according to the preamble of claim 1 (EP-A 0 103 841).
  • the invention has for its object to simplify the fixation and contacting of the piezo tubes and thus to reduce the effort associated with the production of writing heads of the type mentioned.
  • a plastic part 1 is shown, which because of its function is referred to below as a tube carrier.
  • a clamping part 2 is shown, into which the tube holder 1 can be snapped.
  • the tube carrier 1 has recesses 3, the shape of which is adapted to the shape of the piezo tubes, which are designated by 4, and which serve as receptacles for the piezo tubes 4.
  • the recesses 3 are arranged in accordance with the arrangements of the piezo tubes 4 in the write head.
  • First contact elements 5 are provided for the individual contacting of the individual piezo tubes 4.
  • the first contact elements 5 can be provided as individual contacts or, as shown in the exemplary embodiment, in the form of contact banks 6.
  • the contact tongues of a contact bank form the corresponding contact elements 5, which are inserted into the corresponding recesses 3 of the tube carrier 1.
  • the recesses 3 are provided on both sides of the tube carrier 1, such a contact bank is provided for each row of recesses.
  • the contact elements 5 extend so far into the recesses 3 that they ensure contact with the one, preferably with the outer electrode of each piezo tube 4.
  • the clamping part 2 shown in the lower part of the drawing serves to receive the tube carrier 1, which is pressed into the clamping part 2 after insertion of the first contact elements and is fastened by snapping.
  • the clamping part 2 has 7 openings 8 in its lateral longitudinal walls.
  • the openings 8 serve to receive the second contact elements 9.
  • the second contact elements are also designed in the form of contact banks, the contact tongues 10 being inserted through the openings 8 before the tube carrier 1 snaps into place.
  • the contact tongues 10 are dimensioned in such a way that they ensure contact with the inner electrode of each piezo tube.
  • the clamping part 2 isolates the contacting of the piezo tubes via the second contact elements from the contacting by the first contact elements.
  • the contact tongues 5 of the contact bank 6 are separated by trimming. This ensures the individual contacting of the piezo tubes required for a write head of the type mentioned.
  • the one for all piezo tube Chen common connection with the other electrode of the piezo tubes can then be made via the contact tongues 10 of the second contact bank 9.
  • the holding part formed in this way by inserting the actual tube carrier 1 into the clamping part is preferably plugged onto a printed circuit board and wave-soldered before being fitted with the individual piezo tubes.
  • the piezotubes 4 are then inserted, wherein they are securely contacted via the contact tongues 5 and 10.
  • the holding part equipped with the piezotube is then placed in a casting mold or a molded part and, after the shaping needles mentioned at the beginning, is poured through the piezotubes.
  • the position of the shaping needles is largely secured by the clearly fixed position of the already fully contacted piezo tubes.
  • the tube holder 1 and the clamping part 2 consist of a temperature-resistant, inexpensive plastic.
  • the entire holding part consisting of these two parts can thus be cast easily and remains part of the writing head.

Landscapes

  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Pens And Brushes (AREA)
  • Ink Jet (AREA)

Claims (4)

1. Dispositif pour fixer et pour contacter des éléments de commande réalisés sous la forme de petits tubes (4) en matériau piézocéramique, dans une tête d'écriture, réalisée suivant un procédé de moulage, d'installations d'écriture à l'encre comprenant un support (1) pour les petits tubes, destiné à recevoir ceux-ci dans leur position correcte, ainsi que des éléments de contact (10) qui sont maintenus dans des ouvertures ménagées dans un élément de serrage (2), caractérisé par le fait que le support (1) des petits tubes comporte des ouvertures (3) qui reçoivent les petits tubes (4) en matériau piézocéramique sur toute leur longueur, ainsi qu'un premier groupe d'éléments de contact, que l'élément de serrage (2) est conformé de telle manière qu'il reçoit complètement et par encliquetage ledit support (1) des petits tubes, et qu'un second groupe d'éléments de contact (10) est susceptible d'être enfiché dans les ouvertures (8) de l'élément de serrage (2).
2. Dispositif selon la revendication 1, caractérisé par le fait que les premiers et les seconds éléments de contact (5, 6; 9, 10) sont réalisés sous la forme de bancs de contacts dont les languettes de contact (5, 10) sont, après encliquetage du support (1) des petits tubes dans l'élément de serrage (2), maintenues dans leur position correcte, et que les languettes de contact (5) du premier banc de contacts (6) viennent en contact avec une couche extérieure de contact des petits tubes piézocéramiques (4), alors que les languettes de contact (10) du second banc de contacts (9) viennent en contact avec une couche intérieure de contact des petits tubes piézocéramiques (4).
3. Dispositif selon la revendication 2, caractérisé par le fait que les languettes (5) du premier banc de contacts sont individualisées après l'insertion dans le support (1) des petits tubes et après l'encliquetage dans l'élément de serrage (2).
4. Dispositif selon la revendication 1 à 3, caractérisé par le fait que le support (1) des petits tubes et l'élément de serrage (2) sont des éléments en une matière plastique résistant aux températures.
EP84115417A 1984-05-18 1984-12-14 Dispositif pour fixer et réaliser des contacts pour transducteurs piézo-électriques cylindriques Expired EP0161341B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3418636 1984-05-18
DE3418636 1984-05-18

Publications (3)

Publication Number Publication Date
EP0161341A2 EP0161341A2 (fr) 1985-11-21
EP0161341A3 EP0161341A3 (en) 1986-10-22
EP0161341B1 true EP0161341B1 (fr) 1989-10-18

Family

ID=6236290

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84115417A Expired EP0161341B1 (fr) 1984-05-18 1984-12-14 Dispositif pour fixer et réaliser des contacts pour transducteurs piézo-électriques cylindriques

Country Status (4)

Country Link
US (1) US4588999A (fr)
EP (1) EP0161341B1 (fr)
JP (1) JPS60260343A (fr)
DE (1) DE3480183D1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1278949C (fr) * 1985-12-06 1991-01-15 Samuel A. Johnson Tete d'impression thermique au jet d'encre avec canalisation a fente d'alimentation en commun, et sa fabrication
US4698644A (en) * 1986-10-27 1987-10-06 International Business Machines Drop-on-demand ink jet print head
EP0382741B1 (fr) * 1987-09-25 1993-11-24 Siemens Aktiengesellschaft Dispositif pour controler la projection de gouttes par les buses de sortie d'unetete d'ecriture a encre
JP4085969B2 (ja) * 2003-11-27 2008-05-14 株式会社豊田自動織機 電動ルーツ型圧縮機

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE7603784L (sv) * 1975-09-29 1977-03-30 Siemens Ag Anordning for kontaktering av elektriska komponenter for ingjutning i arbetsstycken
DE2740773A1 (de) * 1977-09-09 1979-03-15 Siemens Ag Vorrichtung zum kontaktieren von im schreibkopf von tintenschreibeinrichtungen zu vergiessenden piezowandlern
JPS55150376A (en) * 1979-05-14 1980-11-22 Canon Inc Liquid ejection recording head
DE3019822A1 (de) * 1980-05-23 1981-12-03 Siemens AG, 1000 Berlin und 8000 München Anordnung fuer einen schreibkopf in tintenmosaikschreibeinrichtungen
DE3208679A1 (de) * 1982-03-10 1983-09-22 Siemens AG, 1000 Berlin und 8000 München Vorrichtung zum kontaktieren von in kunststoff zu vergiessenden roehrenfoermigen piezowandlern
US4502059A (en) * 1982-08-20 1985-02-26 Xerox Corporation Electrical interconnection system
DE3234408C2 (de) * 1982-09-16 1986-01-09 Siemens AG, 1000 Berlin und 8000 München Schreibkopf mit piezoelektrischen Antriebselementen für Tintenschreibeinrichtungen
DE8415250U1 (de) * 1984-05-18 1986-01-02 Siemens AG, 1000 Berlin und 8000 München Vorrichtung zur Fixierung und Kontaktierung von Piezoröhrchen

Also Published As

Publication number Publication date
US4588999A (en) 1986-05-13
JPS60260343A (ja) 1985-12-23
EP0161341A3 (en) 1986-10-22
DE3480183D1 (en) 1989-11-23
EP0161341A2 (fr) 1985-11-21

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