EP0348679A3 - Adjustable resistor, in particular for manual switches of electrical tools - Google Patents

Adjustable resistor, in particular for manual switches of electrical tools Download PDF

Info

Publication number
EP0348679A3
EP0348679A3 EP19890109900 EP89109900A EP0348679A3 EP 0348679 A3 EP0348679 A3 EP 0348679A3 EP 19890109900 EP19890109900 EP 19890109900 EP 89109900 A EP89109900 A EP 89109900A EP 0348679 A3 EP0348679 A3 EP 0348679A3
Authority
EP
European Patent Office
Prior art keywords
adjustable resistor
track arrangement
counter
contact
manual switches
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.)
Withdrawn
Application number
EP19890109900
Other languages
German (de)
French (fr)
Other versions
EP0348679A2 (en
Inventor
Heinrich Zeitvogel
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.)
Conti Temic Microelectronic GmbH
Original Assignee
Telefunken Electronic GmbH
Temic Telefunken Microelectronic 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 Telefunken Electronic GmbH, Temic Telefunken Microelectronic GmbH filed Critical Telefunken Electronic GmbH
Publication of EP0348679A2 publication Critical patent/EP0348679A2/en
Publication of EP0348679A3 publication Critical patent/EP0348679A3/en
Withdrawn legal-status Critical Current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
    • H01C10/305—Adjustable resistors the contact sliding along resistive element consisting of a thick film
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/14—Adjustable resistors adjustable by auxiliary driving means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/06—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner
    • H01H9/061—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner enclosing a continuously variable impedance

Abstract

Ein einstellbarer Widerstand weist eine Widerstandsbahnanordnung (4) auf, der ein Gegenkontakt (9) zugeordnet ist, welcher in Längsrichtung (13) über die Widerstandsbahnanordnung führbar ist und eine Justiereinrichtung für die Lage des Gegenkontakts aufweist. Um bei einfachem Aufbau unabhängig von der Einstellung der Justiereinrichtung den freien Verschiebeweg des Gegenkontakts nicht zu beschränken, damit insbesondere bei der Anwendung im Handschalter eines Elektrowerkzeugs mit Drehzahlsteuerung unabhängig von einem gewählten Maximalwert eine hohe Auflösung erreicht wird, ist der Gegenkontakt (9) mittels der Justiervorrichtung (11) zusätzlich quer zur Längsrichtung (13) der Widerstandsbahnanordnung (4) verstellbar. An adjustable resistor has a resistance track arrangement (4) on which a counter contact (9) is assigned, which in the longitudinal direction (13) can be guided over the resistance track arrangement and a Has adjusting device for the position of the counter-contact. To at simple construction regardless of the setting of the adjustment device not to limit the free movement path of the counter contact, so especially when used in the hand switch of a power tool with speed control regardless of a selected maximum value one high resolution is achieved, the counter contact (9) by means of Adjustment device (11) additionally transversely to the longitudinal direction (13) of the Resistor track arrangement (4) adjustable.

EP19890109900 1988-06-25 1989-06-01 Adjustable resistor, in particular for manual switches of electrical tools Withdrawn EP0348679A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3821562A DE3821562C1 (en) 1988-06-25 1988-06-25
DE3821562 1988-06-25

Publications (2)

Publication Number Publication Date
EP0348679A2 EP0348679A2 (en) 1990-01-03
EP0348679A3 true EP0348679A3 (en) 1991-10-16

Family

ID=6357296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890109900 Withdrawn EP0348679A3 (en) 1988-06-25 1989-06-01 Adjustable resistor, in particular for manual switches of electrical tools

Country Status (4)

Country Link
US (1) US4978939A (en)
EP (1) EP0348679A3 (en)
JP (1) JPH0251202A (en)
DE (1) DE3821562C1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5334967A (en) * 1993-06-29 1994-08-02 Illinois Tool Works Inc. Voltage divider
US5488349A (en) * 1993-12-02 1996-01-30 Erickson; Bruce L. Multiple range variable resistor
DE4410312C2 (en) * 1994-03-25 2000-01-13 Bosch Gmbh Robert Electric hand tool with potentiometer and method for adjusting the potentiometer
GB2314980B (en) * 1996-07-02 2000-06-28 Defond Mfg Ltd Power tool speed controller
FR2829522B1 (en) * 2001-09-07 2003-11-21 Siemens Automotive Sa WINDOW REGULATOR CONTROL SYSTEM
US6774509B2 (en) * 2002-01-30 2004-08-10 Defond Manufacturing Limited Electrical switch assembly
CN105185494B (en) * 2014-06-19 2018-03-06 国网山西省电力公司电力科学研究院 A kind of rheostatic resistance adjustment method of composite microcomputer
JP6854302B2 (en) * 2018-01-10 2021-04-07 ディーフォン エレクテック カンパニー リミテッドＤｅｆｏｎｄ Ｅｌｅｃｔｅｃｈ Ｃｏ．， Ｌｔｄ Electrical switch module for use with variable speed controllers in electrical devices
CN209390034U (en) * 2019-01-23 2019-09-13 惠州拓邦电气技术有限公司 A kind of electronic switch module and electric tool

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3663755A (en) * 1970-04-23 1972-05-16 Motorola Inc Variable resistance control device
US4097704A (en) * 1976-08-02 1978-06-27 Cutler-Hammer, Inc. Industrial reversing speed control trigger switch with snap-in modules
EP0047849A2 (en) * 1980-09-12 1982-03-24 Carrier Corporation Variable resistance device and a method of making such a device
EP0259763A2 (en) * 1986-09-12 1988-03-16 Preh-Werke GmbH & Co. KG Method for producing non-linear resistive paths, and rotary potentiometer manufactured thereby
DE8802883U1 (en) * 1988-03-04 1988-04-21 Preh, Elektrofeinmechanische Werke Jakob Preh Nachf. Gmbh & Co, 8740 Bad Neustadt, De

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1938396A (en) * 1929-12-16 1933-12-05 Allen Bradley Co Electrical resistor
DE652202C (en) * 1934-07-01 1937-10-27 Siemens & Halske Akt Ges Potentiometer with a resistive layer applied to an insulating base
US3156888A (en) * 1963-03-01 1964-11-10 Weston Instruments Inc Adjustable potentiometer
US3535670A (en) * 1968-05-02 1970-10-20 Spectrol Electronics Corp Contact member for a variable resistor
US3599141A (en) * 1969-07-07 1971-08-10 Spectrol Electronics Corp Variable resistor having means for sealing between a lead screw and the housing
US3648217A (en) * 1970-05-06 1972-03-07 Spectrol Electronics Corp Potentiometer equipped with positive positioning means

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3663755A (en) * 1970-04-23 1972-05-16 Motorola Inc Variable resistance control device
US4097704A (en) * 1976-08-02 1978-06-27 Cutler-Hammer, Inc. Industrial reversing speed control trigger switch with snap-in modules
EP0047849A2 (en) * 1980-09-12 1982-03-24 Carrier Corporation Variable resistance device and a method of making such a device
EP0259763A2 (en) * 1986-09-12 1988-03-16 Preh-Werke GmbH & Co. KG Method for producing non-linear resistive paths, and rotary potentiometer manufactured thereby
DE8802883U1 (en) * 1988-03-04 1988-04-21 Preh, Elektrofeinmechanische Werke Jakob Preh Nachf. Gmbh & Co, 8740 Bad Neustadt, De

Also Published As

Publication number Publication date
US4978939A (en) 1990-12-18
EP0348679A2 (en) 1990-01-03
JPH0251202A (en) 1990-02-21
DE3821562C1 (en) 1990-02-08

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