EP0447753A1 - Diviseur de tension - Google Patents

Diviseur de tension Download PDF

Info

Publication number: EP0447753A1
Authority: EP; European Patent Office
Prior art keywords: track; voltage divider; contact; resistance; base plate
Prior art date: 1990-03-19
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

EP91100714A

Other languages

German (de)

English (en)

Other versions

EP0447753B1 (fr

Inventor

Joachim Dipl.-Ing. Borst

Armin Dipl.-Phys. Sauter

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.)

Rafi GmbH and Co KG

Rafi GmbH and Co Elektrotechnische Spezialfabrik

Original Assignee

Rafi GmbH and Co KG

Rafi GmbH and Co Elektrotechnische Spezialfabrik

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.)

1990-03-19

Filing date

1991-01-22

Publication date

1991-09-25

1991-01-22 Application filed by Rafi GmbH and Co KG, Rafi GmbH and Co Elektrotechnische Spezialfabrik filed Critical Rafi GmbH and Co KG

1991-09-25 Publication of EP0447753A1 publication Critical patent/EP0447753A1/fr

1995-04-12 Application granted granted Critical

1995-04-12 Publication of EP0447753B1 publication Critical patent/EP0447753B1/fr

2011-01-22 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

239000004020 conductor Substances 0.000 claims description 12
239000000463 material Substances 0.000 claims description 3
238000010276 construction Methods 0.000 description 3
125000006850 spacer group Chemical group 0.000 description 3
239000011888 foil Substances 0.000 description 1
239000007788 liquid Substances 0.000 description 1
230000000284 resting effect Effects 0.000 description 1
239000000758 substrate Substances 0.000 description 1

Images

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
- H01C10/14—Adjustable resistors adjustable by auxiliary driving means

Definitions

the invention relates to a voltage divider with a resistance track applied to a base plate and an adjustable connection interacting with it.
the adjustable connection is formed by resilient brushes which rest directly on the resistance track and are mechanically adjusted to change the potential difference.
the resistance track is applied from a thin substrate, e.g. B. evaporated, resistance layer, this can be worn and damaged by frequent adjustment of the sliding contact, so that the life and the resilience of such a voltage divider is not particularly large.
Another disadvantage is that the known voltage divider build large and can not or can only be carried out in a watertight design through considerable construction.
the object of the invention is therefore to design a voltage divider of the type mentioned in such a way that it can be made not only very small in height, but also watertight without difficulty. Above all, however, it should be avoided that an adjustable link must be guided over the resistance path when the voltage difference is to be changed, and that this is worn or damaged as a result.
the construction effort, through which this can be achieved, should be kept low, nevertheless a safe function with high accuracy and a long service life should be guaranteed.
this is achieved in a voltage divider with a resistance track applied to a base plate and an adjustable connection interacting with it, in that a contact track is arranged vertically above the resistance track at a distance from it, which is elastic on an intermediate plate in the area of one provided therein deformable zone is attached, and that the adjustable connection is designed as a pressure piece which is slidably guided along the contact track and through which the contact track can be applied to the resistance track.
the contact track can be provided with a connecting conductor track, but it is also possible to have these two on both sides of the resistance track on the base plate Assign attached contact rails, which are each provided with a connecting conductor.
the connecting conductor tracks attached to the two ends of the resistance track should expediently be arranged parallel to one another on one side of the base plate, the connecting track tracks of the contact rails being arranged parallel to the connecting conductor tracks of the resistance track on the same side of the base plate.
a particularly flat and inexpensive configuration can be achieved if the base plate, the intermediate plate and / or the cover plate carrying the slide element are made of an electrical insulating film or a circuit board material.
a voltage divider according to the invention in which a contact track interacts with the resistance track and is applied to this by a displaceable pressure piece as an adjustable connection, it is not only possible to make the voltage divider compact and, in an economical manner, also very flat, e.g. B. from foil or plastic parts, but this can also be carried out waterproof.
the range of use of such a variable resistor is thus expanded to a considerable extent.
the voltage divider shown in FIGS. 1 and 3 and designated 1 and 1 ' essentially consists of a base plate 2 with a resistance track 3 applied thereon and a contact track 11 arranged vertically above it, which is designed as a pressure piece 22 adjustable connection 21 can be applied to the resistance track 3.
the contact track 11 is attached to an intermediate plate 6, which is arranged at a distance from the resistance track 3 by means of a spacer 8, which is provided with a corresponding rectangular recess 9, and has an elastically deformable zone 7 between them, on which the contact track 11 is attached.
the pressure piece 11 is guided in a slot-like recess 20 of a cover plate 17, which means Spacer plates 18 and 19 is attached to the intermediate plate 6. Since the base plate 2 and the intermediate plate 6 can be made of an electrical insulating film or printed circuit board material and can be connected to one another in a liquid-tight manner, a compact and flat construction is provided, moreover the voltage divider 1 or 1 'is liquid-tight, since between the resistance track 3 and the Contact path 11 no liquid can get.
the resistance track 3 is equipped at each end with a connecting conductor track 4 and 5, which are arranged together on one side of the base plate 2.
the contact track 11 also has a connecting conductor track 12 which is attached on the side opposite the connecting conductor tracks 4 and 5.
two contact rails 13 and 15 are mounted on the side of the base plate 2 next to the resistance track 3 and run parallel to the resistance track 3, the contact tracks 14 and 16 running parallel to the connection tracks 4 and 5 of the resistance track 3 are provided.
the pressure piece 22 forming the adjustable connection 21 has a projecting extension 23 or 23 'and is guided by means of lateral guide pieces 24 between the spacer plates 18 and 19 and the intermediate plate 8 and the cover plate 17. 1 and 2, the contact track 11 is thus pressed against the resistance track 3, in the embodiment according to FIGS. 3 and 4, however, the contact track 11 acts in the area of the approach 23 'as a bridge through which the resistance track 11 with the two contact rails 13 and 15 is electrically connected.
a voltage difference corresponding to the respective resistance value of the resistance path 3 is present between it and the negative pole of the voltage source.
the pressure piece 22 is adjusted, it is not guided over the resistance track 11, but rather over the side of the contact track 11 facing away from it, so that resting components abut one another and no wear on the resistance track 3 can occur due to adjustment movements of the pressure piece 22.

Landscapes

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

EP91100714A 1990-03-19 1991-01-22 Diviseur de tension Expired - Lifetime EP0447753B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE4008807A DE4008807A1 (de)	1990-03-19	1990-03-19	Spannungsteiler
DE4008807		1990-03-19

Publications (2)

Publication Number	Publication Date
EP0447753A1 true EP0447753A1 (fr)	1991-09-25
EP0447753B1 EP0447753B1 (fr)	1995-04-12

Family

ID=6402568

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP91100714A Expired - Lifetime EP0447753B1 (fr)	1990-03-19	1991-01-22	Diviseur de tension

Country Status (2)

Country	Link
EP (1)	EP0447753B1 (fr)
DE (2)	DE4008807A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2072675A5 (fr) *	1970-11-30	1971-09-24	Lamare Raymond

1990
- 1990-03-19 DE DE4008807A patent/DE4008807A1/de not_active Withdrawn
1991
- 1991-01-22 EP EP91100714A patent/EP0447753B1/fr not_active Expired - Lifetime
- 1991-01-22 DE DE59105137T patent/DE59105137D1/de not_active Expired - Fee Related

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2072675A5 (fr) *	1970-11-30	1971-09-24	Lamare Raymond

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ELECTRICAL DESIGN NEWS vol. 16, no. 9, Mai 1971, Seite 45 R. W. FORSBERG: "POTENTIOMETER HAS NO BRUSHES OR WIPERS" *

Also Published As

Publication number	Publication date
DE4008807A1 (de)	1991-09-26
DE59105137D1 (de)	1995-05-18
EP0447753B1 (fr)	1995-04-12

Legal Events

Date	Code	Title	Description
1991-08-09	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1991-09-25	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): CH DE FR GB IT LI SE
1992-03-18	17P	Request for examination filed	Effective date: 19920117
1994-03-09	17Q	First examination report despatched	Effective date: 19940121
1995-02-24	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1995-04-12	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): CH DE FR GB IT LI SE
1995-05-18	REF	Corresponds to:	Ref document number: 59105137 Country of ref document: DE Date of ref document: 19950518
1995-06-14	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)	Effective date: 19950515
1995-06-16	ITF	It: translation for a ep patent filed
1995-07-12	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SE Effective date: 19950712
1995-07-28	ET	Fr: translation filed
1996-02-16	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1996-02-16	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1996-04-03	26N	No opposition filed
2000-11-02	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 20001102 Year of fee payment: 11
2000-11-16	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 20001116 Year of fee payment: 11
2001-03-16	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 20010316 Year of fee payment: 11
2001-04-18	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: CH Payment date: 20010418 Year of fee payment: 11
2002-01-01	REG	Reference to a national code	Ref country code: GB Ref legal event code: IF02
2002-01-22	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020122
2002-01-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020131 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020131
2002-08-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020801
2002-09-11	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 20020122
2002-09-13	REG	Reference to a national code	Ref country code: CH Ref legal event code: PL
2002-09-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020930
2002-10-31	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST
2005-01-22	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050122

Publication	Publication Date	Title
DE3020411C2 (de)	1983-09-22	Vorrichtung zum Messen der Verschiebung zweier Körper
DE7620297U1 (de)	1976-10-28	Schiebewiderstand
DE3624883C2 (fr)	1991-04-11
DE2248029A1 (de)	1974-04-11	Traeger fuer die beweglichen kontakte eines schaltgeraetes
EP0447753B1 (fr)	1995-04-12	Diviseur de tension
DE2629294C2 (de)	1982-09-09	Einstellbarer Widerstand in einem quaderförmigen Gehäuse
CH652269A5 (en)	1985-10-31	Quick mounting base made of plastic, for fixing an electrical device or printed-circuit board
DE2625726C3 (de)	1979-01-11	Elektronische Kleinuhr
DE2709605A1 (de)	1977-10-20	Kapazitiver schalter
DE8432252U1 (de)	1985-02-07	Gehäuse zur Aufnahme von Anzeige- oder Bedienelementen
DE3624166A1 (de)	1988-01-21	Folienschaltung
DE3039614C2 (fr)	1991-01-17
DE3718543C1 (de)	1988-06-23	Zeichenkopf
DE9411391U1 (de)	1995-11-16	Elektro-Installationsgerät
DE7019783U (de)	1970-09-10	Mehrfach-schiebewiderstand
DE2534126A1 (de)	1977-02-17	Leiterplatte mit einer gedruckten schaltung
DE2014496A1 (de)	1971-11-11	Schaltereinheit für Miniatur-Drehschalter
DE2314438A1 (de)	1973-10-04	Elektrischer schalter
EP1154442A2 (fr)	2001-11-14	Résistance variable et diviseur de tension comportant celle-ci, circuit imprimé et appareil dentaire
DE2516874C3 (de)	1977-12-15	Schiebepotentiometer
DE2061591A1 (de)	1972-07-06	Drehschalter mit Drucktastenschalter, insbesondere für Kraftfahrzeuge
DE3230282A1 (de)	1984-02-16	Elektrisches geraet mit einem gehaeuse und einem die gehaeusewand durchsetzenden schiebeschalter
DE2334491A1 (de)	1974-03-28	Veraenderlicher linearer widerstand
DE2539581C2 (de)	1977-09-22	Schalteranordnung
DE1930558C (de)	1972-01-27	Kleinschalter