EP0159372B1 - Abgriff oder Stromabnehmer für Potentiometer, Wegaufnehmer u. dgl. - Google Patents

Abgriff oder Stromabnehmer für Potentiometer, Wegaufnehmer u. dgl. Download PDF

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Publication number
EP0159372B1
EP0159372B1 EP84104530A EP84104530A EP0159372B1 EP 0159372 B1 EP0159372 B1 EP 0159372B1 EP 84104530 A EP84104530 A EP 84104530A EP 84104530 A EP84104530 A EP 84104530A EP 0159372 B1 EP0159372 B1 EP 0159372B1
Authority
EP
European Patent Office
Prior art keywords
wiper
path
tap
fingers
tapped
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
EP84104530A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0159372A1 (de
Inventor
Ernst Dipl.-Ing. Gass
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.)
NOVOTECHNIK GMBH MESSWERTAUFNEHMER
Original Assignee
Novotechnik Messwertaufnehmer 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8191891&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0159372(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Novotechnik Messwertaufnehmer GmbH filed Critical Novotechnik Messwertaufnehmer GmbH
Priority to AT84104530T priority Critical patent/ATE35874T1/de
Priority to DE8484104530T priority patent/DE3472851D1/de
Priority to EP84104530A priority patent/EP0159372B1/de
Priority to US06/724,085 priority patent/US4748434A/en
Priority to JP60083636A priority patent/JPS60235402A/ja
Publication of EP0159372A1 publication Critical patent/EP0159372A1/de
Application granted granted Critical
Publication of EP0159372B1 publication Critical patent/EP0159372B1/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/12—Arrangements of current collectors

Definitions

  • the invention is based on a tap or pantograph according to the preamble of claim 1.
  • a known sliding resistor with a tap of this type (DE-U-7 540 374) is in a rectangular, elongated housing as the bottom a plastic support plate for the parallel lying Resistance and collector track, while the slide forming the tap is guided by profile rails extending along the housing in such a way that parts of the slide are encompassed by the profile rails without play and a braking effect in the slide direction can be exerted.
  • a sliding contact spring is mounted on or inserted into the slide, which has the shape of a rectangular frame in which the resilient track and the collector track make contacting spring arms project inwards out of the frame level.
  • variable resistor in which two wiper elements slide on a common resistance track in the opposite direction to one another, which slide with further wiper elements on mutually insulated collector tracks.
  • the whole in a simplified form, represents a kind of double potentiometer, the resistance path being common to both potentiometers, since the same potential relationships are permitted.
  • Each of the wiper elements opens into a plurality of mutually separate elastic wiper fingers that slide on the associated path.
  • FIG. 1 shows the state of the art in detail and with the aid of this illustration, the problems arising with such taps or current collectors are discussed in more detail below.
  • the following explanations relate in particular to the design of a tap for a so-called displacement sensor, which is usually a linear potentiometer, which may also be very long (up to 2 m), which is used as an actual value transmitter on moving machine parts.
  • the tap is designated as a whole by 10 - it consists of one here representative of all possible conceivable storage and assembly forms standing blocks 11, which can be driven by any machine part, the actual value adjustment must be represented by a highly accurate voltage signal, and from the actual grinder element, here consisting of a large number of juxtaposed, from one suitable precious metal alloy existing grinder fingers 12, which are attached at 13 to the bearing block 11.
  • the resistance path the potential of which is picked up by the tap during its movement and is usually to be transmitted to a parallel collector or return path, is designated by 14.
  • the tap or pantograph according to the invention solves this problem with the characterizing features of the main claim and has the advantage that a perfectly lifelike image of the actual movement of the respective machine element can be achieved in the form of a voltage, in particular also in the particularly trouble-prone reversal points of the potentiometer or displacement transducer on which a number of dynamic effects take effect due to the extremely high accelerations acting on them.
  • the invention succeeds in mastering these dynamic effects on the one hand or eliminating them by mechanical measures, and on the other hand ensures that the actual movement of the machine element is properly mapped even if dynamic residual influences remain.
  • the opposing arrangement of at least two grinder elements ensures that at each possible point on the path at least one of the grinder elements is always pulled, the other is pushed, whereby in the respective end regions or reversal points, although both grinders seem to be practically stationary for a short moment , act on both completely different dynamic effects, but in such a way that one of the wiper elements is always able to offer the desired actual value voltage without any problems or errors.
  • the novel shape and design of the tap or pantograph permits working cycles of several hundred or thousands of millions, that is to say in a number which was previously thought to be completely unthinkable.
  • the tap according to the invention withstands speeds and accelerations that would have led to complete destruction in a few hours in the case of earlier taps.
  • each grinder element in the idle state is particularly advantageous if it is not placed on the web to be contacted.
  • the basic idea of the present invention is to design the tap in such a way that, regardless of the direction in which it is moved over the assigned path to be contacted, a grinder element is always pulled at the same time and at the same time a grinder element is always pushed out of its clamping, making it a full one constant balancing of the above-mentioned dynamic effects.
  • FIGS. 2-4 subcomponents and elements that are identical to FIG. 1 are provided with the same reference numerals, supplemented by a comma at the top.
  • the block storing the tap or grinder components is designated 11' - it has a greater length here, which extends in the longitudinal direction of the tap movement, and can consist of a lower base part 11a 'and a mounting leg 11 b running at right angles thereto' be provided with holes 20 for attachment.
  • the entire movable element is referred to as tap, including the bearing block, which is moved along the resistance path or the element to be contacted.
  • the bearing block 11 'then carries individual grinder elements 12a' and 12b ', which in turn are again formed from individual grinder fingers which are usually connected in one piece to one end region.
  • the wiper fingers are collectively designated 21 (see FIG. 3).
  • the tap according to the invention is designed in such a way that two grinder elements 12a ', 12b' mounted against one another or arranged in opposite directions are at least provided if one initially only focuses on the means for scanning an assumed resistance spell.
  • a concrete exemplary embodiment will be discussed with reference to FIG. 3.
  • the exact assembly of these two grinder elements 12a ', 12b' takes place in such a way that they contact a common transverse line to the usual direction of movement in the installed state on the resistance track or other slope or collector, which is already necessary so that of both grinder sub-elements 12a ', 12b' same potential is detected. Therefore, in the exemplary embodiment shown in FIG.
  • FIG. 2 shows a tap or pantograph in the idle state, that is to say in the unmounted position, in which at the same time another essential inventive feature is implemented, which is followed immediately is received.
  • the two mutually facing grinder elements 12a ', 12b' are in any case so mounted on the carrier block 11 ', which is preferably common here, that no matter in which direction of the double arrow AB the tap is moved, always one of the grinder elements 12a', 12b 'from its clamping point seen, pulled and always pushed one.
  • the clamping can be designed as shown in Fig. 2, i.e. support plates 22 are provided for each grinder element, which are fastened to the base plate 11 a 'of the support block 11' by means of two screws 23 (see also FIG. 3) and to which in turn the punched-out final shape of each grinder element is there, where this is still continuous is integral, such as by spot welding, as shown at 24.
  • each wiper element 12a ', 12b' to an additional carrier plate lies mainly in the fact that the material of the wiper elements forming the individual wiper fingers 21 is an expensive precious metal alloy, the main components of which are palladium, platinum, silver and gold (technical name Paliney no 6 or 7).
  • the individual wiper elements 12a ', 12b' are punched out of narrow alloy strips in such a way that the cuts forming the recesses between the wiper fingers 21 are made up to relatively close to the fastening region 24 on the support plate 22, so that each wiper finger is largely self-supporting and can react elastically compliant.
  • a preferred embodiment of the present invention therefore consists in the fact that, according to the striking and possibly exaggerated representation of FIG. 2, the individual wiper fingers and thus all parallel wiper fingers follow this shape in their entirety in the rest state, are bent in a pre-curved curve shape, in such a way that that they are concave with respect to the resistance path on which they later slide, ie are bulged upwards.
  • the procedure is otherwise such that, before installation, a device having a transparent surface is pressed onto the grinder elements from below until the distance that the tap is to take up to the resistance track is reached and then carry out the axial adjustment on one of the wiper parts 27a or 27b by means of the fastening screws 23 until all the wiper part elements are matched in the aligned position of the bent end hooks 16 '.
  • a further advantageous embodiment of the present invention consists in that the individual wiper fingers resiliently resting on the web with pressure bear a common layer or covering of an elastomer or a silicone rubber, in any case a rubber-like material with internal friction, in common covering on at least one side, so that the individual free spring movement of each grinder finger is still possible, but is damped by the other fingers and by the action of the elastomer itself, so that resonances or jumping or rattling of the grinder fingers do not occur.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Adjustable Resistors (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Details Of Resistors (AREA)
EP84104530A 1984-04-21 1984-04-21 Abgriff oder Stromabnehmer für Potentiometer, Wegaufnehmer u. dgl. Expired EP0159372B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT84104530T ATE35874T1 (de) 1984-04-21 1984-04-21 Abgriff oder stromabnehmer fuer potentiometer, wegaufnehmer u. dgl.
DE8484104530T DE3472851D1 (en) 1984-04-21 1984-04-21 Tap or collector brush for potentiometers, path-length meters and similar devices
EP84104530A EP0159372B1 (de) 1984-04-21 1984-04-21 Abgriff oder Stromabnehmer für Potentiometer, Wegaufnehmer u. dgl.
US06/724,085 US4748434A (en) 1984-04-21 1985-04-17 Tap or current collector for potentiometers, displacement pick-ups, etc.
JP60083636A JPS60235402A (ja) 1984-04-21 1985-04-20 電気機器用の電流取出し装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP84104530A EP0159372B1 (de) 1984-04-21 1984-04-21 Abgriff oder Stromabnehmer für Potentiometer, Wegaufnehmer u. dgl.

Publications (2)

Publication Number Publication Date
EP0159372A1 EP0159372A1 (de) 1985-10-30
EP0159372B1 true EP0159372B1 (de) 1988-07-20

Family

ID=8191891

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84104530A Expired EP0159372B1 (de) 1984-04-21 1984-04-21 Abgriff oder Stromabnehmer für Potentiometer, Wegaufnehmer u. dgl.

Country Status (5)

Country Link
US (1) US4748434A (ja)
EP (1) EP0159372B1 (ja)
JP (1) JPS60235402A (ja)
AT (1) ATE35874T1 (ja)
DE (1) DE3472851D1 (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4137989A1 (de) * 1991-11-19 1993-05-27 Siedle Horst Kg Beweglicher abgriff oder schleifer fuer potentiometer
US5666100A (en) * 1995-09-15 1997-09-09 Data Instruments, Inc. Linear potentiometer with a floating pin joint
US7521921B2 (en) 2004-10-26 2009-04-21 Georgia Tech Research Corporation Displacement sensor
US20090058430A1 (en) * 2007-09-05 2009-03-05 Sentrinsic Systems and Methods for Sensing Positions of Components
CN102561447B (zh) * 2012-02-16 2014-04-09 永济电机天作电气有限责任公司 电铲车高、低压集电装置
CN104714559A (zh) * 2015-01-23 2015-06-17 安徽吉思勘仪器科技有限公司 一种运动部件电气连接

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4118258A (en) * 1973-12-20 1978-10-03 Jean Gole Vibration damping through adherence to a layer comprising polyisoprene and the damped structure resulting
DE7540374U (de) * 1975-12-18 1976-05-13 Preh, Elektrofeinmechanische Werke Jakob Preh Nachf., 8740 Bad Neustadt Schiebewiderstand
US4051453A (en) * 1976-02-09 1977-09-27 Cts Corporation Variable resistance control with low noise contactor
DE2706760C3 (de) * 1977-02-17 1981-03-19 Novotechnik Kg Offterdinger Gmbh & Co, 7302 Ostfildern Beweglicher Abgriff
JPS5612806U (ja) * 1979-07-10 1981-02-03
JPS593529Y2 (ja) * 1980-09-13 1984-01-31 アルプス電気株式会社 可変抵抗器

Also Published As

Publication number Publication date
ATE35874T1 (de) 1988-08-15
JPS60235402A (ja) 1985-11-22
EP0159372A1 (de) 1985-10-30
DE3472851D1 (en) 1988-08-25
US4748434A (en) 1988-05-31

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