DE3923967A1 - Braille writing module with piezoceramic-strip pin actuators - utilises horizontal displacement of cupped heads for raising and lowering pins arranged in matrix - Google Patents

Braille writing module with piezoceramic-strip pin actuators - utilises horizontal displacement of cupped heads for raising and lowering pins arranged in matrix

Info

Publication number
DE3923967A1
DE3923967A1 DE19893923967 DE3923967A DE3923967A1 DE 3923967 A1 DE3923967 A1 DE 3923967A1 DE 19893923967 DE19893923967 DE 19893923967 DE 3923967 A DE3923967 A DE 3923967A DE 3923967 A1 DE3923967 A1 DE 3923967A1
Authority
DE
Germany
Prior art keywords
piezoceramic
lifting head
module according
module
pin
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.)
Granted
Application number
DE19893923967
Other languages
German (de)
Other versions
DE3923967C2 (en
Inventor
Robert Zimmermann
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.)
BLISTAEHG GEMEINNUETZIGE GESELLSCHAFT FUER ELEKTRO
Original Assignee
Robert Zimmermann
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 Robert Zimmermann filed Critical Robert Zimmermann
Priority to DE19893923967 priority Critical patent/DE3923967A1/en
Publication of DE3923967A1 publication Critical patent/DE3923967A1/en
Application granted granted Critical
Publication of DE3923967C2 publication Critical patent/DE3923967C2/de
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B21/00—Teaching, or communicating with, the blind, deaf or mute
    • G09B21/001—Teaching or communicating with blind persons
    • G09B21/003—Teaching or communicating with blind persons using tactile presentation of the information, e.g. Braille displays
    • G09B21/004—Details of particular tactile cells, e.g. electro-mechanical or mechanical layout
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H57/00—Electrostrictive relays; Piezoelectric relays

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • User Interface Of Digital Computer (AREA)

Abstract

A 2 x 4 matrix array of pins (3) sunk into an ergonomically shaped cover (2) with retraction springs (12) is operated selectively by the heads (7) of piezoceramic actuators (6) in chambers within a thermoplastic body (1a). Operating voltages are supplied to pins (9) of a base connector. Each head (7) has a cup-shaped recess in which the lower end of a matrix pin (3) is seated. Other numbers and arrangements of pins are possible, e.g, for switch contact operation. ADVANTAGE - Reliable information is supplied irrespective of pressure on pins (3), whose locking is facilitated by shape of heads.

Description

Die Erfindung benutzt piezokeramische Streifen zur Darstellung von taktiler Information, insbesondere von Blindenschrift in Braille-Code.The invention uses piezoceramic strips to represent tactile information, especially braille in braille code.

Mit Hilfe der piezokeramischen Streifen, welche bei der Anlegung von elektrischer Spannung eine Formveränderung erfahren, können auch Stellglieder (z. B. Schaltkontakte) bedient werden.With the help of the piezoceramic strips, which are used when applying electrical voltage can experience a change in shape, too Actuators (e.g. switch contacts) are operated.

Das Modul besteht aus zumindest einem Tastpunkt und ist aufgrund sei­ ner Anordnung in beliebiger Rasterung und für jedes gewünschte Format benutzbar. Für die Darstellung von Blindenschrift kann das Modul mit 2 × 4 Punkten ausgestattet werden.The module consists of at least one touch point and is due to be arrangement in any grid and for any desired format usable. The module can be used to display Braille 2 × 4 points.

Die taktile Information wird durch das Anheben und Absenken eines Stiftes übermittelt, welcher mittels eines piezokeramischen Streifens mit Hilfe eines Hebekopfes bewegt wird.The tactile information is obtained by raising and lowering one Pen transmitted, which by means of a piezoceramic strip is moved with the aid of a lifting head.

Durch das Anheben des Stiftes kann auch ein Stellglied betätigt wer­ den.An actuator can also be actuated by lifting the pin the.

Das Anheben und Absenken eines Stiftes wird mittels eines piezokerami­ schen Streifens, welcher entweder senkrecht unter dem Stift steht, oder waagerecht unter ihm liegt, durch die horizontale Bewegung eines Hebekopfes bewirkt.The lifting and lowering of a pen is done using a piezokerami strip, which is either perpendicular under the pin, or lying horizontally below it by the horizontal movement of one Lifting head causes.

Steht der Hebekopf mit seinem erhabenen Teil unter dem Stift, so ist der Stift angehoben, und somit gesetzt. Steht hingegen der erhabene Teil neben dem Stift, so senkt sich derselbe auf ein niedrigeres Niveau. Dies geschieht entweder durch die Gravitationskraft oder durch eine Feder, welche den Stift ständig nach unten drückt, und somit löscht.If the lifting head with its raised part is under the pin, then the pen raised, and thus set. However, the sublime stands Part next to the pen, so it descends to a lower one Level. This happens either through the gravitational force or through a spring that constantly pushes the pin down, and thus deletes.

Der Stift dient zur Darstellung von taktiler Information, z. B. in einer 2 × 4 Matrix zur Darstellung von Blindenschrift im Braille-Code. Der Stift kann ebenfalls zur Betätigung von Stellgliedern, z. B. für Schaltkontakte, benutzt werden. The pen is used to display tactile information, e.g. B. in a 2 × 4 matrix for displaying Braille in Braille code. The pin can also be used to actuate actuators, e.g. B. for Switch contacts can be used.  

Zeichnungendrawings

Fig. 1 zeigt einen vergrößert dargestellten Längsschnitt des Aus­ führungsbeispiels eines 8-Punkt-Braillemoduls, mit senk­ recht angeordneten piezokeramischen Streifen. Fig. 1 shows an enlarged longitudinal section of the exemplary embodiment from an 8-point Braille module, with vertically arranged piezoceramic strips.

Fig. 2 zeigt eine Draufsicht auf das Ausführungsbeispiel. Fig. 2 shows a plan view of the embodiment.

Fig. 3 zeigt eine Seitenansicht des Ausführungsbeispiels. Fig. 3 shows a side view of the embodiment.

Fig. 4 zeigt Beispiele des Hebekopfes:
a) ohne Verriegelungsmöglichkeit
b) mit Verriegelungsmöglichkeit. Fig. 4 shows examples of the lifting head:
a) without locking option
b) with locking option.

Fig. 5 zeigt das Funktionsprinzip am Beispiel des Hebekopfes:
a) ohne Verriegelungsmöglichkeit
b) mit Verriegelungsmöglichkeit. Fig. 5 shows the principle of operation using the example of the lifting head:
a) without locking option
b) with locking option.

Erläuterung der ZeichnungenExplanation of the drawings

Das aus den Figuren ersichtliche Braille-Modul kann in der gezeigten Ausführungsform acht Punkte darstellen, und damit acht Taststifte pro Modul enthalten (siehe Fig. 2). Mehrere dieser Moduls können zeilen- und flächenweise aneinanderge­ reiht werden.The Braille module shown in the figures can represent eight points in the embodiment shown and thus contain eight styli per module (see FIG. 2). Several of these modules can be lined up in rows and areas.

Das Braille-Modul (siehe Fig. 1) weist einen Modulkörper (Nr. 1a) so­ wie eine ergonomische gestaltbare, abnehmbare Deckfläche (Nr. 2) auf, in welche Taststifte (Nr. 3) eingelassen sind.The Braille module (see Fig. 1) has a module body (No. 1 a) as well as an ergonomic, removable cover surface (No. 2 ), in which stylus pins (No. 3 ) are embedded.

Der Modulkörper ist aus einem thermoplastischen Werkstoff hergestellt und weist acht Kammern (Nr. 4) auf, die durch Trennstege (Nr. 5) von­ einander getrennt sind.The module body is made of a thermoplastic material and has eight chambers (No. 4 ), which are separated from each other by dividers (No. 5 ).

Die acht Kammern bilden an der Unter- und Oberseite einen geraden Ab­ schluß aus, in welchem die piezokeramischen Aktivatoren (Nr. 6) für die zugehörigen Taststifte (Nr. 3) fest eingespannt sind. An den Kup­ pen der Aktivatoren (Nr. 6) sind die jeweiligen Hebeköpfe (Nr. 7) starr verbunden.The eight chambers form a straight line from the top and bottom, in which the piezoceramic activators (No. 6 ) for the associated styli (No. 3 ) are firmly clamped. At the Kup pen of the activators (No. 6 ) the respective lifting heads (No. 7 ) are rigidly connected.

Wie man aus der Fig. 1 erkennt, sind die Aktivatoren (Nr. 6) sowie die Taststifte (Nr. 3) in den Löchern (Nr. 8 bei Fig. 2) vertikal an­ geordnet.As can be seen from Fig. 1, the activators (No. 6 ) and the stylus (No. 3 ) in the holes (No. 8 in Fig. 2) are arranged vertically.

Der gemäß der Darstellung Fig. 1 linke Taststift (Nr. 3) wird durch den linken Aktivator (Nr. 6) angesteuert. Die nach rechts versetzten weiteren Aktivatoren (Nr. 6) steuern entsprechend die in gleicher Wei­ se versetzten Taststifte an.The left stylus (No. 3 ) as shown in Fig. 1 is controlled by the left activator (No. 6 ). The other activators (No. 6 ), which are offset to the right, control the styli that are offset in the same way.

Die Spannungszufuhr zu den einzelnen Aktivatoren (Nr. 6) erfolgt über die an der Unterseite des Modulkörpers (Nr. 1a) angeordneten Kontakt­ stifte (Nr. 9), welche in eine Grundeinheit (nicht dargestellt) einge­ steckt werden können.The voltage supply to the individual activators (No. 6 ) takes place via the contact pins (No. 9 ) arranged on the underside of the module body (No. 1 a), which can be inserted into a basic unit (not shown).

Die in der Deckfläche (Nr. 2) eingelassenen Taststifte (Nr. 3) bewegen sich in einer Stiftkammer (Nr. 10), deren unterer Abschluß ein abnehm­ bares Zwischenplättchen (Nr. 11) bildet. The probe pins (No. 3 ) embedded in the top surface (No. 2 ) move in a pin chamber (No. 10 ), the lower end of which forms a removable intermediate plate (No. 11 ).

Die in der Stiftkammer (Nr. 10) enthaltene Feder (Nr. 12) gewähr­ leistet eine gesenkte Stiftposition im gelöschten Zustand, bei dem der erhabene Teil des Hebekopfes neben dem Stift steht.The spring (No. 12 ) contained in the pin chamber (No. 10 ) ensures a lowered pin position in the deleted state, in which the raised part of the lifting head is next to the pin.

Die in Fig. 4a und 4b dargestellten Beispiele der Hebeköpfe (Nr. 7) unterscheiden sich in ihrer Verriegelungseigenschaft.The examples of the lifting heads (No. 7 ) shown in FIGS . 4a and 4b differ in their locking properties.

Der Hebekopf (Nr. 7) nach Fig. 4a weist in Verbindung mit dem piezo­ keramischen Aktivator eine federnde Eigenschaft auf.The lifting head (No. 7 ) according to FIG. 4a has a resilient property in connection with the piezo-ceramic activator.

Das bedeutet, daß der Taststift (Nr. 3) bei mechanischer Belastung von oben federnd nachgibt, indem der Hebekopf (Nr. 7) durch die Feder­ steifigkeit des piezokeramischen Aktivators zur Seite weggedrückt wird.This means that the stylus (No. 3 ) yields resiliently under mechanical load from above by the lifting head (No. 7 ) being pushed aside by the spring stiffness of the piezoceramic activator.

Bei dem in Fig. 4b dargestellten Hebekopf (Nr. 7) wird bei mechani­ scher Belastung des Taststiftes (Nr. 3) der Hebekopf (Nr. 7) nicht zur Seite gedrückt, da der Taststift (Nr. 3) im gesetzten Zustand in der Vertiefung (Nr. 13) des erhabenen Teils des Hebekopfes (Nr. 7) aufliegt und somit verriegelt ist.In the lifting head shown in Fig. 4b (No. 7 ) with mechanical stress on the stylus (No. 3 ) the lifting head (No. 7 ) is not pushed to the side because the stylus (No. 3 ) in the set state in the Recess (No. 13 ) of the raised part of the lifting head (No. 7 ) rests and is therefore locked.

Fig. 5a und 5b zeigen das Funktionsprinzip der Anordnung sowohl im gesetzten Zustand (S) als auch im gelöschten Zustand (L). Fig. 5a and 5b illustrate the principle of operation of the arrangement, both in the set state (S) and in the erased state (L).

Claims (10)

1. Modul zur Darstellung von taktiler Information mit Hilfe eines Stiftes, welcher durch die horizontale Auslenkung eines Hebekopfes an­ gehoben oder abgesenkt wird.1. Module for displaying tactile information using a Pin, which is due to the horizontal deflection of a lifting head is raised or lowered. Dieser Hebekopf wird durch die Verformung eines piezokeramischen Streifens, welcher senkrecht zum Taststift steht, ausgelenkt.This lifting head is deformed by a piezoceramic Strip, which is perpendicular to the stylus, deflected. 2. Modul nach Anspruch 1, dadurch gekennzeichnet, daß der den Hebe­ kopf auslenkende piezokeramische Streifen auch waagerecht zum Tast­ stift liegen kann.2. Module according to claim 1, characterized in that the lifting Piezoceramic strips deflecting the head also horizontally to the touch pen can lie. 3. Modul nach Anspruch 1, dadurch gekennzeichnet, daß Anzahl, Raste­ rung und Format der taktilen Stifte - abweichend von dem der 2 × 4 Matrix für die Blindenschrift-Darstellung - beliebig sein kann.3. Module according to claim 1, characterized in that number, detent Formation and format of the tactile pens - different from that of the 2 × 4 Braille display matrix - can be any. 4. Modul nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß der taktile Stift durch die jeweilige spezielle Form des Hebekopfes im angehobenen Zustand entweder verriegelt oder federnd ist. 4. Module according to claim 1 to 3, characterized in that the tactile pin through the respective special shape of the lifting head in the raised state is either locked or springy.   5. Modul nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß der Hebekopf mit dem piezoelektrischen Streifen starr verbunden ist.5. Module according to claim 1 to 4, characterized in that the Lifting head is rigidly connected to the piezoelectric strip. 6. Modul nach Anspruch 1 bis 5, dadurch gekennzeichnet, daß der taktile Stift durch die Gravitationskraft oder durch eine Federkraft nach unten bewegt wird.6. Module according to claim 1 to 5, characterized in that the tactile pen by gravitational force or by a spring force is moved down. 7. Modul nach Anspruch 1 bis 6, dadurch gekennzeichnet, daß es mit den Kontaktstiften auf einer Grundeinheit steckbar verbunden wer­ den kann.7. Module according to claim 1 to 6, characterized in that it who can be plugged into a base unit with the contact pins that can. 8. Modul, dadurch gekennzeichnet, daß der vom Hebekopf bewegte Stift als Stellglied verwendet wird, z. B. als Relais mit sehr geringem Stromver­ brauch.8. Module, characterized in that the pin moved by the lifting head as Actuator is used, for. B. as a relay with very low Stromver need. 9. Modul, dadurch gekennzeichnet, daß der Hebekopf nicht mit einem piezo­ keramischen Streifen, sondern durch einen elektromagnetischen Antrieb ausgelenkt wird.9. Module, characterized in that the lifting head is not a piezo ceramic strips, but by an electromagnetic drive is deflected.
DE19893923967 1989-07-20 1989-07-20 Braille writing module with piezoceramic-strip pin actuators - utilises horizontal displacement of cupped heads for raising and lowering pins arranged in matrix Granted DE3923967A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19893923967 DE3923967A1 (en) 1989-07-20 1989-07-20 Braille writing module with piezoceramic-strip pin actuators - utilises horizontal displacement of cupped heads for raising and lowering pins arranged in matrix

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19893923967 DE3923967A1 (en) 1989-07-20 1989-07-20 Braille writing module with piezoceramic-strip pin actuators - utilises horizontal displacement of cupped heads for raising and lowering pins arranged in matrix

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DE3923967A1 true DE3923967A1 (en) 1991-01-31
DE3923967C2 DE3923967C2 (en) 1991-06-27

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0620541A2 (en) * 1993-04-16 1994-10-19 Kgs Corporation Tactile reading device
EP0837437A1 (en) * 1996-10-16 1998-04-22 KGS Corporation Graphic tactile cell
NL1005093C2 (en) * 1997-01-27 1998-07-29 Turn Out N V Braille cell and display consisting of several braille cells as well as a method for controlling several feeler pins of a braille cell.
WO2002080134A1 (en) * 2001-04-02 2002-10-10 The Johns Hopkins University Refreshable tactile computer display
EP1396834A2 (en) * 2002-09-05 2004-03-10 KGS Corporation Braille graphics cell module and braille graphics tactile apparatus
DE102004046526A1 (en) * 2004-09-23 2006-04-06 Handy Tech Elektronik Gmbh Tactile control system for controlling screen clipping, has piezoelectric control unit on which force exerted by scanning finger is transferred to generate voltage fluctuations that are selected so that fluctuations at unit are evaluated

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4133000C2 (en) * 1991-10-04 1993-11-18 Siegfried Dipl Ing Kipke Piezo-hydraulic module for the implementation of tactile information
DE4233524A1 (en) * 1992-10-06 1994-04-07 Otegau Ostthueringer Entwicklu Braille pins bistable information display - provides coaxial guidance for soft-magnetic pins which are reciprocated by electromagnetic system contg. coils located between permanent magnets
DE19547942A1 (en) * 1995-12-21 1997-07-03 Csk Edv Systemhaus Gmbh Mechanical Braille display board

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DE7409913U (en) * 1975-12-18 Licentia Gmbh Display device with tactile symbols
DE2833979A1 (en) * 1977-08-05 1979-07-26 Tretiakoff DEVICE FOR THE RELIEF-LIKE SENSIBLE REPRODUCTION OF DATA ON A FIELD LIKE A DISPLAY
DE2842916A1 (en) * 1978-10-02 1980-04-17 Licentia Gmbh Braille character representation device - operates using array of pins selectively raised via respective electromagnetic coils
US4283178A (en) * 1979-07-02 1981-08-11 Telesensory Systems, Inc. Electromechanical braille cell
DE3042390A1 (en) * 1980-11-10 1982-06-16 Metec Ingenieurgesellschaft Mbh Medizintechnik-Feinwerktechnik, 7000 Stuttgart Device for displaying tactile information - has dusts moved out or in by electromagnets, for use on magnetic screen
DE3044599A1 (en) * 1980-11-27 1982-07-08 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt EM controlled pins for braille system - have alternate pole pieces and magnets and slide inside holders containing EM coils
US4403166A (en) * 1980-12-19 1983-09-06 Matsushita Electric Industrial Co., Ltd. Piezoelectric relay with oppositely bending bimorphs
US4647808A (en) * 1984-08-30 1987-03-03 Tokyo Juki Industrial Co., Ltd. Piezoelectric actuator
US4664632A (en) * 1984-05-24 1987-05-12 Oleg Tretiakoff Tactile reading device
DE3603020A1 (en) * 1986-01-31 1987-08-06 Siemens Ag Piezoelectric relay
DE3706286A1 (en) * 1987-02-26 1988-09-08 Friedrich Horst Ing Papenmeier ELECTROMECHANICAL BRAILLE LINE

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7409913U (en) * 1975-12-18 Licentia Gmbh Display device with tactile symbols
DE2833979A1 (en) * 1977-08-05 1979-07-26 Tretiakoff DEVICE FOR THE RELIEF-LIKE SENSIBLE REPRODUCTION OF DATA ON A FIELD LIKE A DISPLAY
DE2842916A1 (en) * 1978-10-02 1980-04-17 Licentia Gmbh Braille character representation device - operates using array of pins selectively raised via respective electromagnetic coils
US4283178A (en) * 1979-07-02 1981-08-11 Telesensory Systems, Inc. Electromechanical braille cell
DE3042390A1 (en) * 1980-11-10 1982-06-16 Metec Ingenieurgesellschaft Mbh Medizintechnik-Feinwerktechnik, 7000 Stuttgart Device for displaying tactile information - has dusts moved out or in by electromagnets, for use on magnetic screen
DE3044599A1 (en) * 1980-11-27 1982-07-08 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt EM controlled pins for braille system - have alternate pole pieces and magnets and slide inside holders containing EM coils
US4403166A (en) * 1980-12-19 1983-09-06 Matsushita Electric Industrial Co., Ltd. Piezoelectric relay with oppositely bending bimorphs
US4664632A (en) * 1984-05-24 1987-05-12 Oleg Tretiakoff Tactile reading device
US4647808A (en) * 1984-08-30 1987-03-03 Tokyo Juki Industrial Co., Ltd. Piezoelectric actuator
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0620541A2 (en) * 1993-04-16 1994-10-19 Kgs Corporation Tactile reading device
EP0620541A3 (en) * 1993-04-16 1996-07-31 Kgs Kk Tactile reading device.
EP0837437A1 (en) * 1996-10-16 1998-04-22 KGS Corporation Graphic tactile cell
US5842867A (en) * 1996-10-16 1998-12-01 Kgs Corporation Graphic tactile cell
NL1005093C2 (en) * 1997-01-27 1998-07-29 Turn Out N V Braille cell and display consisting of several braille cells as well as a method for controlling several feeler pins of a braille cell.
WO1998036401A1 (en) * 1997-01-27 1998-08-20 Turn-Out N.V. Braille cell and display comprising a plurality of braille cells, as well as a method for controlling a plurality of pins of a braille cell
WO2002080134A1 (en) * 2001-04-02 2002-10-10 The Johns Hopkins University Refreshable tactile computer display
US7226291B2 (en) 2001-04-02 2007-06-05 The Johns Hopkins University Refreshable tactile computer display
EP1396834A2 (en) * 2002-09-05 2004-03-10 KGS Corporation Braille graphics cell module and braille graphics tactile apparatus
EP1396834A3 (en) * 2002-09-05 2006-09-27 KGS Corporation Braille graphics cell module and braille graphics tactile apparatus
DE102004046526A1 (en) * 2004-09-23 2006-04-06 Handy Tech Elektronik Gmbh Tactile control system for controlling screen clipping, has piezoelectric control unit on which force exerted by scanning finger is transferred to generate voltage fluctuations that are selected so that fluctuations at unit are evaluated
DE102004046526B4 (en) * 2004-09-23 2007-07-05 Handy Tech Elektronik Gmbh Tactile control device

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