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EP0035699B1 - Position measuring device with sockets for electrical connection - Google Patents

Position measuring device with sockets for electrical connection Download PDF

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Publication number
EP0035699B1
EP0035699B1 EP81101389A EP81101389A EP0035699B1 EP 0035699 B1 EP0035699 B1 EP 0035699B1 EP 81101389 A EP81101389 A EP 81101389A EP 81101389 A EP81101389 A EP 81101389A EP 0035699 B1 EP0035699 B1 EP 0035699B1
Authority
EP
European Patent Office
Prior art keywords
contact
measuring device
component
sockets
contact sockets
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
EP81101389A
Other languages
German (de)
French (fr)
Other versions
EP0035699A3 (en
EP0035699A2 (en
Inventor
Wolfgang Dipl.-Ing. Reimar
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.)
Dr Johannes Heidenhain GmbH
Original Assignee
Dr Johannes Heidenhain GmbH
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 Dr Johannes Heidenhain GmbH filed Critical Dr Johannes Heidenhain GmbH
Priority to AT81101389T priority Critical patent/ATE7551T1/en
Publication of EP0035699A2 publication Critical patent/EP0035699A2/en
Publication of EP0035699A3 publication Critical patent/EP0035699A3/en
Application granted granted Critical
Publication of EP0035699B1 publication Critical patent/EP0035699B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
    • H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S439/00—Electrical connectors
    • Y10S439/908—Contact having two contact surfaces for electrical connection on opposite sides of insulative body

Definitions

  • the invention relates to a position measuring device with contact sockets for electrical connections to electrically conductive grids on surfaces of relatively movable components - for example in the form of a material measure and a scanning plate of length or angle measuring devices - for direct contacting of the grids to the connections.
  • Measuring devices of this type are known. With the connection technology of such measuring devices deal z. B. DE-AS 12 63 327, DE-AS 12 98 299 and DE-GM 19 85 138.
  • connection of the electrically conductive measuring grid which is in the form of a conductor track, is made with the aid of cables which are soldered to the grid and led through bores to the rear of the carrier bodies or are guided around them to the rear.
  • connection sockets can be torn out when changing the contact pin.
  • the connection sockets can also not be provided with a screw connection, since there is no provision against rotation.
  • FIG. 1 shows a section
  • FIG. 2 shows a top view of an exemplary embodiment of the invention
  • a metallic scale body 1 carries on its surface a measuring graduation 2 made in the form of an electrical conductor etching technique in the form of an electrically conductive grid.
  • the mode of operation of measuring devices with such measuring divisions is adequately described in the prior art mentioned, so that it does not have to be discussed in more detail.
  • the measuring graduation 2 is isolated from the scale body 1.
  • In the scale body 1 there are slot-shaped recesses 3 and 3 'which are connected to through holes 4 in such a way that there are gradations due to the different dimensions. In each of these recesses 3 and 3 ', a part 5 and 5' of a two-part insulating body is inserted.
  • the insulating body part 5 is produced using plastic injection molding technology and has prismatic recesses 6, into which form-fitting contact sockets 7 are inserted.
  • the contact sockets 7 carry prismatic lugs 7 'into which the prismatic recesses 6 are fitted in such a way that a soldering lug 8 can be attached between the lugs 7' and the bottom of the recesses 6 and is in electrical connection with the measuring graduation 2.
  • the electrical connection is made by soldering 9.
  • the insulating body part 5 'molded from plastic has conical recesses 10 on its outer region.
  • the contact sockets 7 can be flared at their ends opposite the prismatic lugs 7 ', so that the expanded conical jacket 7 "after the plug-in assembly pulls the two insulating body parts 5 and 5' into the recesses 3 and 3 'in such a way that the contact socket is released 7 by rotation or by pulling out perpendicular to the scale body 1 is not possible without destroying the contact socket 7.
  • the through hole 11 arranged in the contact socket 7, which can be designed as a tapered bore, serves to receive a contact pin which provides the electrical connection to the evaluation electronics or to A screw connection is also possible with an appropriate design of the bore 11.
  • the contact socket 7 can also be galvanically gold-plated in the through bore 11, which contributes considerably to improving the electrical contact.
  • the measuring graduation 2 is provided with a protective lacquer layer to protect against negative influences.

Landscapes

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Insulating Bodies (AREA)
  • Cable Accessories (AREA)
  • Measuring Leads Or Probes (AREA)
  • Insulators (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Multi-Conductor Connections (AREA)

Abstract

A position measuring instrument, of the type including a first component which includes a first electrically conductive sensor conductor and a second component, which includes a second electrically sensor conductor, wherein one of the two components is mounted to move relative to the other component, is provided with an improved connector which comprises at least one insulating member secured to the first component such that the insulating member is substantially prevented from rotating with respect to the first component, at least one electrically conducting contact member, which is secured to the insulating member such that the contact member is substantially prevented from rotating with respect to the first component, is substantially prevented from pulling out of the insulating member, and does not extend substantially beyond the first component, wherein the contact member is electrically connected to the first sensor conductor.

Description

Die Erfindung bezieht sich auf eine Positionsmeßeinrichtung mit Kontaktbuchsen für elektrische Anschlüsse an elektrisch leitende Raster auf Oberflächen relativ zueinander beweglicher Bauteile - beispielsweise in Form einer Maßverkörperung und einer Abtastplatte von Längen- oder Winkelmeßeinrichtungen - zur direkten Kontaktierung der Raster an die Anschlüsse.The invention relates to a position measuring device with contact sockets for electrical connections to electrically conductive grids on surfaces of relatively movable components - for example in the form of a material measure and a scanning plate of length or angle measuring devices - for direct contacting of the grids to the connections.

Es sind Meßeinrichtungen dieser Art bekannt. Mit der Anschlußtechnik derartiger Meßeinrichtungen befassen sich z. B. die DE-AS 12 63 327, die DE-AS 12 98 299 sowie das DE-GM 19 85 138.Measuring devices of this type are known. With the connection technology of such measuring devices deal z. B. DE-AS 12 63 327, DE-AS 12 98 299 and DE-GM 19 85 138.

In der DE-AS 1263327 und im DE-GM 19 85 138 erfolgt der Anschluß der in Leiterbahnform vorliegenden elektrisch leitenden Meßraster mit Hilfe von Kabeln, die am Raster angelötet und durch Bohrungen zur Rückseite der Trägerkörper herausgeführt oder um sie herum zur Rückseite geführt werden.In DE-AS 1263327 and in DE-GM 19 85 138, the connection of the electrically conductive measuring grid, which is in the form of a conductor track, is made with the aid of cables which are soldered to the grid and led through bores to the rear of the carrier bodies or are guided around them to the rear.

In der DE-AS 12 98 299 werden zum Teil schon die Anschlüsse in Leiterbahntechnik auf die Rückseite der Trägerkörper geführt und münden dort in Anschlüssen. Ein Teil dieser Anschlüsse befindet sich auf Ausnehmungen, die zu der Oberfläche der Maßverkörperung abgesetzt sind.In DE-AS 12 98 299, some of the connections using conductor technology are already routed to the back of the carrier body and end there in connections. Some of these connections are located on recesses that are offset from the surface of the material measure.

Derartige Anschlüsse sind mit Nachteilen behaftet, da Kabelverbindungen vom Meßraster zum Anschluß mechanisch empfindlich sind und die Anschlußbuchsen beim Kontaktstiftwechsel herausgerissen werden können. Die Anschlußbuchsen können auch nicht mit Schraubanschluß versehen werden, da eine Sicherung gegen Verdrehung nicht vorgesehen ist.Such connections have disadvantages, since cable connections from the measuring grid to the connection are mechanically sensitive and the connection sockets can be torn out when changing the contact pin. The connection sockets can also not be provided with a screw connection, since there is no provision against rotation.

Es ist die Aufgabe der Erfindung, die bestehenden Nachteile bei den Anschlüssen an elektrisch leitende Raster zu vermeiden und eine Meßeinrichtung mit Kontaktbuchsen zu schaffen, die sicher anschließbar sind, bei der das Lösen der Kontakte nicht zu Beschädigungen an den Meßrastern führt und die die Herstellung der Meßeinrichtung vereinfachen.It is the object of the invention to avoid the existing disadvantages in the connections to electrically conductive grids and to provide a measuring device with contact sockets which can be connected securely, in which the loosening of the contacts does not lead to damage to the measuring grids and which results in the production of Simplify measuring device.

Diese Aufgabe wird durch die im Kennzeichen des Anspruches 1 angegebenen Merkmale gelöst.This object is achieved by the features specified in the characterizing part of claim 1.

Die weiteren Ausgestaltungsmöglichkeiten sind durch die Merkmale der Unteransprüche angegeben.The further design options are indicated by the features of the subclaims.

Die Vorteile der erfindungsgemäßen Ausführung sind:

  • 1. Sicherer Sitz der Kontaktbuchse auch beim Wechsel des Anschlußstiftes,
  • 2. Sicherung gegen Verdrehen der Buchse, dadurch auch Schraubanschluß möglich,
  • 3. galvanisieren der Kontaktbuchse (vergolden) möglich, da eine Durchgangsbohrung vorgesehen ist,
  • 4. es besteht keine Gefahr, daß es bei der Montage oder beim Betrieb der Meßeinrichtung zu einer Beschädigung der Anschlußstellen kommt, da die Kontaktbuchsen nicht über die Oberflächen der Bauteile hinausragen,
  • 5. elektrischer Anschluß auch von der Rückseite der Bauteile möglich.
The advantages of the embodiment according to the invention are:
  • 1. Secure seating of the contact socket even when changing the connecting pin,
  • 2. Protection against rotation of the socket, thereby also screw connection possible,
  • 3. galvanizing of the contact socket (gold plating) possible, since a through hole is provided,
  • 4. There is no risk of damage to the connection points during assembly or operation of the measuring device, since the contact sockets do not protrude beyond the surfaces of the components.
  • 5. electrical connection also possible from the back of the components.

Die Erfindung soll mit Hilfe der Zeichnung (in weicher Fig. 1 einen Schnitt und Fig.2 eine Draufsicht eines Ausführungsbeispiels der Erfindung zeigt) anhand eines Ausführungsbeispieles näher erläutert werden.The invention will be explained in more detail with the aid of the drawing (in which FIG. 1 shows a section and FIG. 2 shows a top view of an exemplary embodiment of the invention) using an exemplary embodiment.

Ein metallischer Maßstabkörper 1 trägt an seiner Oberfläche eine in Leiterbahnätztechnik hergestellte Meßteilung 2 in Form eines elektrisch leitenden Rasters. Die Wirkungsweise von Meßeinrichtungen mit derartigen Meßteilungen ist im genannten Stand der Technik hinreichend beschrieben, so daß darauf nicht näher eingegangen werden muß. Die Meßteilung 2 ist gegen den Maßstabkörper 1 isoliert. Im Maßstabkörper 1 befinden sich langlochförmige Aussparungen 3 und 3', die mit Durchgangslöcher 4 derart verbunden sind, daß sich Abstufungen aufgrund der unterschiedlichen Abmessungen ergeben. In diese Aussparungen 3 und 3' wird jeweils ein Teil 5 und 5' eines zweiteiligen Isolierkörpers eingesetzt. Der Isolierkörperteil 5 ist in Kunststoffspritztechnik hergestellt und weist prismatische Ausnehmungen 6 auf, in die formschlüssig Kontaktbuchsen 7 eingesetzt werden. Die Kontaktbuchsen 7 tragen prismatische Ansätze 7', in die die prismatischen Ausnehmungen 6 derart eingepaßt sind, daß zwischen den Ansätzen 7' und dem Grund der Ausnehmungen 6 eine Lötfahne 8 angebracht werden kann, die in elektrischer Verbindung mit der Meßteilung 2 steht. Die elektrische Verbindung wird durch eine Lötung 9 hergestellt. Der aus Kunststoff gespritzte Isolierkörperteil 5' weist an seinem Außenbereich konische Ausnehmungen 10 auf. Die Kontaktbuchsen 7 können an ihren, den prismatischen Ansätzen 7' gegenüberliegenden Enden konisch aufgeweitet werden, so daß der aufgespreizte Kegelmantel 7" nach der Einsteckmontage die beiden Isolierkörperteile 5 und 5' in den Aussparungen 3 und 3' derart zusammenzieht, daß ein Lösen der Kontaktbuchse 7 durch Drehung oder durch Herausziehen senkrecht zum Maßstabkörper 1 nicht ohne Zerstörung der Kontaktbuchse 7 möglich ist. Die in der Kontaktbuchse 7 angeordnete Durchgangsbohrung 11, die als Kegelbohrung ausgeführt werden kann, dient zur Aufnahme eines Kontaktstiftes, der die elektrische Verbindung zur Auswerteelektronik bzw. zur Versorgung der Meßeinrichtung herstellt. Bei entsprechender Gestaltung der Bohrung 11 ist auch ein Schraubanschluß möglich. Die Kontaktbuchse 7 kann auch in der Durchgangsbohrung 11 galvanisch vergoldet werden, was zur Verbesserung des elektrischen Kontaktes erheblich beiträgt.A metallic scale body 1 carries on its surface a measuring graduation 2 made in the form of an electrical conductor etching technique in the form of an electrically conductive grid. The mode of operation of measuring devices with such measuring divisions is adequately described in the prior art mentioned, so that it does not have to be discussed in more detail. The measuring graduation 2 is isolated from the scale body 1. In the scale body 1 there are slot-shaped recesses 3 and 3 'which are connected to through holes 4 in such a way that there are gradations due to the different dimensions. In each of these recesses 3 and 3 ', a part 5 and 5' of a two-part insulating body is inserted. The insulating body part 5 is produced using plastic injection molding technology and has prismatic recesses 6, into which form-fitting contact sockets 7 are inserted. The contact sockets 7 carry prismatic lugs 7 'into which the prismatic recesses 6 are fitted in such a way that a soldering lug 8 can be attached between the lugs 7' and the bottom of the recesses 6 and is in electrical connection with the measuring graduation 2. The electrical connection is made by soldering 9. The insulating body part 5 'molded from plastic has conical recesses 10 on its outer region. The contact sockets 7 can be flared at their ends opposite the prismatic lugs 7 ', so that the expanded conical jacket 7 "after the plug-in assembly pulls the two insulating body parts 5 and 5' into the recesses 3 and 3 'in such a way that the contact socket is released 7 by rotation or by pulling out perpendicular to the scale body 1 is not possible without destroying the contact socket 7. The through hole 11 arranged in the contact socket 7, which can be designed as a tapered bore, serves to receive a contact pin which provides the electrical connection to the evaluation electronics or to A screw connection is also possible with an appropriate design of the bore 11. The contact socket 7 can also be galvanically gold-plated in the through bore 11, which contributes considerably to improving the electrical contact.

Die Meßteilung 2 ist zum Schutz vor negativen Einflüssen mit einer Schutzlackschicht versehen.The measuring graduation 2 is provided with a protective lacquer layer to protect against negative influences.

Claims (5)

1. Position-measuring device with contact sockets (7) for electrical connections to electrically conducting grids (2) on the surfaces of components (1) which can move relative to one another - for example in the form of an embodiment of a measuring instrument or of an embodiment of a sensing plate, as empolyed in length- measuring devices or angle-measuring devices - these contact socket (7) being provided in order to enable electrical contact to be made directly between the connections and the grids, characterized in that one component (1) is provided with cutouts (3, 3'), which are stepped, take the form of elongated holes, and are interconnected by through-holes (4), in that two- piece insulating bodies (5, 5') are located in the cutouts (3, 3'), in a manner such that they are secured with respect to being twisted, in that, in order to secure them with respect to being pulles out, these bodies (5, 5') posses projecting shoulders, in that the first portion (5) of the insulating body possesses prismatic (6) recesses, and the other portion (5') possesses conical (10) recesses, into which at least one contact socket (7), possessing corresponding projecting shoulders (7') and conically expanding regions (7") engages without projecting beyond the surface of the component, and in that the contact socket (7) is electrically connected to the grid (2).
2. Position-measuring device with contact sockets (7) according to claim 1, characterized in that each of the contact sockets (7) contains a hole (11), which is drilled completely through it.
3. Position-measuring device with contact sockets (7) according to claim 2, characterized in that the throughdrilled holes (11) are designes as conically tapered bores.
4. Position-measuring device with contact sockets (7) according to claim 2, characterized in that the through-drilled holes (11) are designed as tapped holes.
5. Position-measuring device with contact sockets (7) according to claim 1 to 4, characterized in that the contact sockets (7) are gold-plated by means of an electro-plating process.
EP81101389A 1980-03-11 1981-02-26 Position measuring device with sockets for electrical connection Expired EP0035699B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81101389T ATE7551T1 (en) 1980-03-11 1981-02-26 POSITION MEASUREMENT DEVICE WITH CONTACT SOCKETS FOR ELECTRICAL CONNECTIONS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3009236 1980-03-11
DE3009236A DE3009236C2 (en) 1980-03-11 1980-03-11 Arrangement with contact sockets for electrical connections

Publications (3)

Publication Number Publication Date
EP0035699A2 EP0035699A2 (en) 1981-09-16
EP0035699A3 EP0035699A3 (en) 1981-10-28
EP0035699B1 true EP0035699B1 (en) 1984-05-16

Family

ID=6096826

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81101389A Expired EP0035699B1 (en) 1980-03-11 1981-02-26 Position measuring device with sockets for electrical connection

Country Status (6)

Country Link
US (1) US4403823A (en)
EP (1) EP0035699B1 (en)
JP (1) JPS56143683A (en)
AT (1) ATE7551T1 (en)
BR (1) BR8101398A (en)
DE (1) DE3009236C2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5211567A (en) * 1991-07-02 1993-05-18 Cray Research, Inc. Metallized connector block

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11968A (en) * 1854-11-21 Daniel b
US3064218A (en) * 1962-11-13 farrand
US1100178A (en) * 1909-12-18 1914-06-16 Western Electric Co Spool-head.
US1203582A (en) * 1912-10-07 1916-11-07 Charles A Chase Electric sign.
US2148201A (en) * 1935-04-02 1939-02-21 Philips Nv Electrical insulating material and method of making same
US2603681A (en) * 1948-12-15 1952-07-15 Honeywell Regulator Co Printed circuit panel with connector
US2713670A (en) * 1950-06-03 1955-07-19 Richard C Koch Electrical jack
US2931007A (en) * 1956-04-18 1960-03-29 Cambridge Thermionic Corp Electric insulating devices
US2991440A (en) * 1958-03-26 1961-07-04 Kulka Electric Corp Screw-type terminal connector for printed circuits
DE1263327B (en) * 1959-06-05 1968-03-14 Inductosyn Corp Position measuring transformer
BE598281A (en) * 1960-05-18 1961-04-14 Inductosyn Corp Multiple precision transducers
US3205297A (en) * 1962-08-03 1965-09-07 Thompson Ramo Wooldridge Inc Electrical connection utilizing tamped gold foil
DE1985138U (en) * 1965-01-05 1968-05-09 Inductosyn Corp POSITION SENSOR.
US3372319A (en) * 1966-05-23 1968-03-05 Robertshaw Controls Co Sensing element for proximity detectors and the like
US3384862A (en) * 1966-08-11 1968-05-21 Lyall Electric Snap-in electrical receptacle for a panel
BE755639A (en) * 1969-09-05 1971-03-02 Amp Inc CONNECTION FOR CIRCUIT PANEL PRINT
US3725849A (en) * 1970-10-23 1973-04-03 Us Navy Plug in antenna, antenna base and test probe system
GB1402280A (en) * 1972-12-04 1975-08-06 British Insulated Callenders Electric connections
US4181385A (en) * 1978-03-30 1980-01-01 Motorola, Inc. Low profile socket for circuit board with gas vents for fixed position soldering

Also Published As

Publication number Publication date
EP0035699A3 (en) 1981-10-28
JPS56143683A (en) 1981-11-09
ATE7551T1 (en) 1984-06-15
EP0035699A2 (en) 1981-09-16
US4403823A (en) 1983-09-13
DE3009236A1 (en) 1981-09-17
JPH0252392B2 (en) 1990-11-13
BR8101398A (en) 1981-09-15
DE3009236C2 (en) 1982-08-05

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