EP0199295B1 - Drehpotentiometer mit Schalter - Google Patents

Drehpotentiometer mit Schalter Download PDF

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Publication number
EP0199295B1
EP0199295B1 EP86105346A EP86105346A EP0199295B1 EP 0199295 B1 EP0199295 B1 EP 0199295B1 EP 86105346 A EP86105346 A EP 86105346A EP 86105346 A EP86105346 A EP 86105346A EP 0199295 B1 EP0199295 B1 EP 0199295B1
Authority
EP
European Patent Office
Prior art keywords
potentiometer
rotary
switch
outer housing
switching
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 - Lifetime
Application number
EP86105346A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0199295A3 (en
EP0199295A2 (de
Inventor
Fritz Ing. Grad. Prestel
Martin Lohner
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.)
Bsg-Schalttechnik & Co KG GmbH
Original Assignee
Bsg-Schalttechnik & Co KG 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 Bsg-Schalttechnik & Co KG GmbH filed Critical Bsg-Schalttechnik & Co KG GmbH
Priority to AT86105346T priority Critical patent/ATE53695T1/de
Publication of EP0199295A2 publication Critical patent/EP0199295A2/de
Publication of EP0199295A3 publication Critical patent/EP0199295A3/de
Application granted granted Critical
Publication of EP0199295B1 publication Critical patent/EP0199295B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/30—Adjustable resistors the contact sliding along resistive element
    • H01C10/32—Adjustable resistors the contact sliding along resistive element the contact moving in an arcuate path
    • H01C10/36—Adjustable resistors the contact sliding along resistive element the contact moving in an arcuate path structurally combined with switching arrangements

Definitions

  • the invention is based on a rotary potentiometer with a switch.
  • a second housing for the switch actuation is attached to a self-contained potentiometer housing, in which the actuation axis of rotation for the potentiometer adjustment also protrudes on the other side by a predetermined amount.
  • This contact part has a tongue with which it either makes direct contact via one of the spring connections with a further stationary and outwardly directed mating contact attached to the wall or by then pressing together two leaf spring-like adjacent external contacts in an isolated position, so that it becomes one Contact comes.
  • Such switch-potentiometer combinations are often used for half-wave and full-wave control with thyristors or triacs, with the entire control being switched on in certain positions or, if appropriate, a maximum position for full-wave control being reached by a switchover.
  • the invention solves this problem with the features of the main claim and has the advantage that when using and installing the potentiometer as an independent, finished, prefabricated component, only a few additional parts are required in order to have a rotary potentiometer-switch combination with perfect function and good linearity and one to build previously unattainable cost-effectiveness. At the same time, the assembly effort for producing such a combination is decisively reduced, with the further advantage that the final assembled combination module can be used without problems in any circuits and preferably also directly in prefabricated printed circuit boards, which then automatically results in the required connections to the conductor tracks.
  • cam ring which sits loosely but non-rotatably on the axis of rotation for the potentiometer and therefore enables a snap-action switch (torque switch) of the assigned switch when a predetermined angular position is reached.
  • the basic idea of the present invention is to provide for a completely self-contained small potentiometer with a push-through opening for the rotary actuation, another housing which accommodates it and is stored for use, which then also fulfills the additional function, corresponding switch components, contact piece carrier, elastic To store switch arms and connecting lugs for the switch in such a way that the switch can be actuated at the same time by turning a thru-axle for the potentiometer, whereby this thru-axle also holds the small potentiometer inserted in the receiving half-shell housing, either by latching behind-engaging ones, which initially recede when inserted Locking tongues or also by welding an axle end in the push-through opening, for example by heating and melting the axle made of a plastic material area.
  • FIG. 1 shows at 10 the small potentiometer inserted into a pot-like or half-shell-like over-housing 11, with the further indication that this small potentiometer is a completed, prefabricated rotary potentiometer component with its own housing, preferably completely encapsulated in the form of a round cylindrical disk, only with a central push-through opening for an axis of rotation, which is preferably out of round, so that the axis then sits in a rotationally fixed manner in this opening; In Fig. 1, this opening is designated 10a.
  • a further, generally valid advantage with such prefabricated small rotary potentiometers is that they can be produced fully automatically, and are therefore particularly cost-effective with perfect functional properties.
  • the general shape of the finished rotary potentiometer is completed in the lower region, i.e. at the point where the rotary potentiometer rests on the bottom of the pot-shaped housing 10, by two radially projecting tabs or lugs 12a, 12b (FIG. 2), which serve as contact connection carriers and at the same time allow the ring-shaped structure of the rotary potentiometer to pass into a rectangular shape at this point, so that the entire structure becomes out of round and the inserted potentiometer 10 in the outer housing 11 can be prevented from rotating by a correspondingly rectangular inner contour 13 in the receiving area of the outer housing.
  • FIG. 3 shows a view from below, that is to say into the half-shell-shaped outer housing with the switch contacts, with the small potentiometer 10 removed.
  • this wall merges into wall parts 16, 17, 18 which are parallel to the outer wall 11a and which are known as inner peripheral pockets can be designated and serve to accommodate switch parts inserted at this point.
  • These double walls 16, 17, 18 form, with the outer ring wall 11a, downwardly open receiving grooves or slots for the resilient and holding by pressure and friction of a rear transverse part 19b of a resilient switching arm 19 and of the rear end 20a of a stationary mating contact 20.
  • the resilient switching arm 19 is, starting from the cross member 19b and integrally connected to it via an intermediate member 21, bent several times in itself, so that in any case a loop-shaped bulge 19a pressed inward is formed, which forms the point of attack for a cam surface 22, which then acts on the bulge 19a runs up and thereby lifts the switching arm 19 in the direction of the outer edge of the outer housing 11 when an axis of rotation connected to the cam part 22 a Performs rotational movement along arrow A.
  • the bulge 19a then passes under the cam 22a formed by the cam surface 22, so that, preferably with a predetermined overstroke, the contact piece 23 on the switching arm 19 is pressed onto the mating contact tongue 20 with a predetermined contact contact force at 24.
  • the movable switching arm 19 and the stationary counter-contact 20 are preferably made of a suitable metallic spring alloy and are formed in one piece as a whole, also with their rear bearing or transverse parts, these transverse parts simultaneously at 25 and 26 in the plane of the drawing then in vertically upwardly projecting switches. Tongues overlap, which completes the structure of the contact connections for the combination.
  • the component having the switching cams 22a for the switch actuation consists of a cam ring 27, which has a non-circular push-through cutout 28 'in the center and, as can be seen best in the illustration in FIG. 1, on the bottom of the outer housing Part rests in a corresponding recess and is penetrated by the stub shaft 28 of the axis of rotation 29.
  • the overall structure is therefore as can best be seen from the illustration in FIG.
  • the bottom of the pot-shaped outer housing 11 has a central opening 30 through which the stub shaft 28 of the axis of rotation 29 is guided; the cam part 27 for the switch actuation then sits on the stub shaft and finally the stub shaft is still guided through the non-circular lead-through opening 10a of the small potentiometer 10 and the part protruding outward there is then either fused to a greater extent or anchored by latching lugs engaging behind edge areas of the lead-through opening of the potentiometer 10.
  • the axis of rotation rests with a widened shoulder 29a on the outer surface of the outer housing 11, so that the whole has a secure connection.
  • the axis of rotation 29 can then, as indicated at 31, merge into wing-like widenings, so that an operating button can be pushed open; such an actuation button is indicated at 32 and a preferred embodiment of the present invention consists in integrally forming this actuation button, which can also at least partially cover the structure of the overall combination by means of a ring apron 32a which is drawn down far, and the rotary button 32 along its circumference to provide corrugation.
  • a further advantageous measure of the present invention is to arrange the cam ring 27 with loose rotational play, that is to say with a predetermined clearance on the stub axle 28, so that a snap-action switch results if the cam 22a is turned away at the moment when the cam surface 22 wants to finally release the bulge 19a, by means of the spring pressure of the switching arm 19 the cam ring 27 can be suddenly pushed away by predetermined angular amounts, regardless of the further rotary movement, whereby the switch 19/23/24 opens abruptly and sparking is avoided.
  • the metallic parts forming the switching arm 19 and the fixed contact 20 are pushed into the receiving grooves from above in the plane of the drawing in FIG. 3, the parallel walls 16, 17, 18 also being able to partially retreat and then by a punctiform support , as indicated at 33, hold the corresponding metal parts under pressure.
  • the switch can also be designed as a power switch and closed when the potentiometer initially rotates; it is also possible to accommodate more than just one switch in the outer housing 11, for example in superimposed levels, which are then actuated by cam rings 27 which are superimposed in the same way. As a result, the overall height changes only marginally.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Adjustable Resistors (AREA)
  • Switches With Compound Operations (AREA)
  • Operation Control Of Excavators (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
EP86105346A 1985-04-24 1986-04-17 Drehpotentiometer mit Schalter Expired - Lifetime EP0199295B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86105346T ATE53695T1 (de) 1985-04-24 1986-04-17 Drehpotentiometer mit schalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853514708 DE3514708A1 (de) 1985-04-24 1985-04-24 Drehpotentiometer mit schalter
DE3514708 1985-04-24

Publications (3)

Publication Number Publication Date
EP0199295A2 EP0199295A2 (de) 1986-10-29
EP0199295A3 EP0199295A3 (en) 1988-05-18
EP0199295B1 true EP0199295B1 (de) 1990-06-13

Family

ID=6268929

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86105346A Expired - Lifetime EP0199295B1 (de) 1985-04-24 1986-04-17 Drehpotentiometer mit Schalter

Country Status (4)

Country Link
US (1) US4682142A (xx)
EP (1) EP0199295B1 (xx)
AT (1) ATE53695T1 (xx)
DE (2) DE3514708A1 (xx)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4827241A (en) * 1987-10-30 1989-05-02 United Technologies Automotive, Inc. Combined, in-line spacer and switch, particularly for a vehicle's headlight
US4885434A (en) * 1988-05-12 1989-12-05 United Technologies Automotive Inc. Automotive headlight, push-pull, rotary switch system
JP2832911B2 (ja) * 1988-05-30 1998-12-09 アイシン精機株式会社 スイツチ付き可変抵抗器
US5264821A (en) * 1990-11-27 1993-11-23 United Technologies Automotive Rotary, push-pull headlight switch with ceramic coated metal substrate rheostat and cam actuated dome light bypass switch
US5546067A (en) * 1994-12-14 1996-08-13 United Technologies Automotive, Inc. Rotary potentiometer assembly for a push-pull switch
US5838222A (en) * 1996-01-16 1998-11-17 Bi Technologies Corporation Multiturn potentiometer
US8253007B1 (en) * 2009-11-18 2012-08-28 Richard Ned Steinberger Potentiometer control for musical instruments

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB664257A (en) * 1948-12-14 1952-01-02 Globe Union Inc Electrical switch and variable resistor for miniature electrical apparatus
FR1516928A (fr) * 1967-01-16 1968-02-05 Perfectionnements aux interrupteurs de potentiomètres
DE6803685U (de) * 1968-10-24 1969-04-24 Preh Elektro Feinmechanik Anbauschalter
JPS5216374Y2 (xx) * 1972-10-28 1977-04-13
US4081782A (en) * 1976-08-04 1978-03-28 Bourns, Inc. Combined rotary potentiometer and switch
US4117444A (en) * 1977-07-14 1978-09-26 Bourns, Inc. Hearing aid volume control
DE2746481A1 (de) * 1977-10-15 1979-04-19 Bayer Ag Verfahren zur herstellung von reaktiven mikrogelen
DE2746841A1 (de) * 1977-10-19 1979-04-26 Bsg Schalttechnik Vorrichtung zum schalten und vorzugsweise gleichzeitigem, allmaehlichem verstellen von sich hierdurch aendernden elektrischen einflussgroessen
DE8512061U1 (de) * 1985-04-24 1985-07-04 Bsg Schalttechnik Gmbh & Co Kg, 7460 Balingen Drehpotentiometer mit Schalter

Also Published As

Publication number Publication date
DE3514708C2 (xx) 1988-09-29
DE3514708A1 (de) 1986-10-30
DE3672010D1 (de) 1990-07-19
EP0199295A3 (en) 1988-05-18
EP0199295A2 (de) 1986-10-29
US4682142A (en) 1987-07-21
ATE53695T1 (de) 1990-06-15

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