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WO1999035654A1 - Resistance ajustable pourvue d'une coulisse en un materiau elastomere - Google Patents

Resistance ajustable pourvue d'une coulisse en un materiau elastomere Download PDF

Info

Publication number
WO1999035654A1
WO1999035654A1 PCT/NL1998/000020 NL9800020W WO9935654A1 WO 1999035654 A1 WO1999035654 A1 WO 1999035654A1 NL 9800020 W NL9800020 W NL 9800020W WO 9935654 A1 WO9935654 A1 WO 9935654A1
Authority
WO
WIPO (PCT)
Prior art keywords
slider
strip
adjustable resistor
resistance
contact surface
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/NL1998/000020
Other languages
English (en)
Dutch (nl)
Inventor
Cornelis Gerardus Bressers
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.)
Capax BV
Original Assignee
Capax BV
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
Priority to NL1003612A priority Critical patent/NL1003612C2/nl
Application filed by Capax BV filed Critical Capax BV
Priority to DE19882942T priority patent/DE19882942T1/de
Priority to US09/582,862 priority patent/US6359545B1/en
Priority to PCT/NL1998/000020 priority patent/WO1999035654A1/fr
Publication of WO1999035654A1 publication Critical patent/WO1999035654A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/30—Adjustable resistors the contact sliding along resistive element
    • H01C10/38—Adjustable resistors the contact sliding along resistive element the contact moving along a straight path

Definitions

  • the present invention relates to an adjustable resistor comprising a strip of resistance material arranged on an insulating carrier and a slider made of conductive material movable along the strip and contact- ing the strip.
  • Such adjustable resistors are generally known, for instance in the form of potentiometers, wherein the slider is formed by an element usually made of copper or silver which is movable along a carbon strip.
  • Such ad- justable resistors are also known in the form of for instance ceramic printed circuit boards on which strips of resistance material are arranged along which a slider made of copper or silver is movable and which can be used in particular to adjust the speed of an electrical hand- tool.
  • a slider of a rigid, though slightly resilient material is moved along a resistance strip. The resilience of the material is necessary herein to press a contact surface of the slider against the resistance strip. it is noted here that while such a material is resilient, it is hardly flexible.
  • the object of the present invention is to avoid the above stated problem.
  • Another problem of the prior art adjustable resistors is that the rigid sliders used therein are components which are difficult to handle during assembly and soon result in disruption of the assembly process, and which can be processed only with the greatest difficulty using mechanical positioning machines. Due to the greater thickness thereof, the sliders according to the invention become easier to handle mechanically.
  • the object of the present invention is to provide such an adjustable resistor wherein the above stated problems are avoided.
  • the slider is manufactured from elastomeric material .
  • figure 1 shows a schematic perspective view of a first embodiment of an adjustable resistor according to the present invention
  • figure 2 shows a sectional view of the adjustable resistor depicted in figure 1
  • figure 3 shows a sectional view of a variant of the adjustable resistor depicted in figures 1 and 2
  • figure 4 shows a sectional view of a second variant of an adjustable resistor according to the invention
  • figure 5 is a top view of resistance strips of the variant shown in figure 4.
  • Figure 1 shows a base plate 1 which is manufactured from insulating material, for instance from ceramic insulating material .
  • This support plate serves as carrier for the components arranged thereon which, in addition to a resistance strip 2 arranged thereon, generally also include other elements such as semiconductors .
  • a carrier usually forms part of control electronics for adjusting the rotation speed and/or the torque of electrically driven hand-tools in which such a support plate is arranged.
  • a strip 2 of resistance material is arranged on support plate 1.
  • This resistance material is formed by a material which includes conductive particles, for instance carbon, and the specific resistance of which has a value such that the total resistance of the strip acquires the required value.
  • the resistance strip 2 is connected to a conductive strip 3 manufactured from conductive material, for instance of copper or of silver. This strip forms the connection to Hi

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Adjustable Resistors (AREA)

Abstract

Cette résistance ajustable comprend une bande de matériau de résistance située sur un support isolant et une coulisse constituée d'un matériau conducteur qui peut être guidée le long de la bande, en contact avec la bande, le matériau de la coulisse étant un matériau élastomère. Cette coulisse en matériau élastomère, à cause de sa souplesse, est en contact avec la bande de résistance sur une partie relativement importante de la largeur de la bande de résistance, ce qui évite les problèmes de distribution irrégulière du courant associés à des contacts ponctuels. L'utilisation d'un matériau élastomère permet en outre de dimensionner et de façonner la coulisse de sorte qu'elle puisse être aisément maniée par une machine de positionnement, évitant les problèmes rencontrés lorsque des coulisses rigides généralement allongées sont produites en série. La coulisse est de préférence constituée d'un caoutchouc ou plastique conducteur. Dans un autre mode de réalisation, la coulisse est serrée dans un chariot qui peut se déplacer parallèlement à la bande.
PCT/NL1998/000020 1996-07-16 1998-01-09 Resistance ajustable pourvue d'une coulisse en un materiau elastomere Ceased WO1999035654A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL1003612A NL1003612C2 (nl) 1996-07-16 1996-07-16 Regelbare weerstand met een van flexibel materiaal vervaardigde loper.
DE19882942T DE19882942T1 (de) 1998-01-09 1998-01-09 Regelwiderstand mit aus einem elastomeren Werkstoff hergestellten Schiebekontakt
US09/582,862 US6359545B1 (en) 1998-01-09 1998-01-09 Adjustable resistor with slider made from elastomeric material
PCT/NL1998/000020 WO1999035654A1 (fr) 1996-07-16 1998-01-09 Resistance ajustable pourvue d'une coulisse en un materiau elastomere

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1003612A NL1003612C2 (nl) 1996-07-16 1996-07-16 Regelbare weerstand met een van flexibel materiaal vervaardigde loper.
PCT/NL1998/000020 WO1999035654A1 (fr) 1996-07-16 1998-01-09 Resistance ajustable pourvue d'une coulisse en un materiau elastomere

Publications (1)

Publication Number Publication Date
WO1999035654A1 true WO1999035654A1 (fr) 1999-07-15

Family

ID=26642413

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1998/000020 Ceased WO1999035654A1 (fr) 1996-07-16 1998-01-09 Resistance ajustable pourvue d'une coulisse en un materiau elastomere

Country Status (2)

Country Link
NL (1) NL1003612C2 (fr)
WO (1) WO1999035654A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0076039A1 (fr) * 1981-08-31 1983-04-06 Capax Electrische Apparatenfabriek B.V. Commande de vitesse pour outils électriques avec un moteur à courant continu
US4833440A (en) * 1987-01-16 1989-05-23 Eaton Corporation Conductive elastomers in potentiometers & rheostats
US5422452A (en) * 1993-09-16 1995-06-06 Associated Assembly, Inc. Movable electrical potentiometer contact assembly
JPH08124722A (ja) * 1994-10-28 1996-05-17 Sakae Tsushin Kogyo Kk 巻線形ポテンショメータ

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4238755A (en) * 1978-12-13 1980-12-09 Knauff Robert J Simplified linear potentiometer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0076039A1 (fr) * 1981-08-31 1983-04-06 Capax Electrische Apparatenfabriek B.V. Commande de vitesse pour outils électriques avec un moteur à courant continu
US4833440A (en) * 1987-01-16 1989-05-23 Eaton Corporation Conductive elastomers in potentiometers & rheostats
US5422452A (en) * 1993-09-16 1995-06-06 Associated Assembly, Inc. Movable electrical potentiometer contact assembly
JPH08124722A (ja) * 1994-10-28 1996-05-17 Sakae Tsushin Kogyo Kk 巻線形ポテンショメータ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 096, no. 009 30 September 1996 (1996-09-30) *

Also Published As

Publication number Publication date
NL1003612C2 (nl) 1998-01-21

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