EP0878813A2 - Interrupteur électrique rotatif - Google Patents

Interrupteur électrique rotatif Download PDF

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Publication number
EP0878813A2
EP0878813A2 EP98104873A EP98104873A EP0878813A2 EP 0878813 A2 EP0878813 A2 EP 0878813A2 EP 98104873 A EP98104873 A EP 98104873A EP 98104873 A EP98104873 A EP 98104873A EP 0878813 A2 EP0878813 A2 EP 0878813A2
Authority
EP
European Patent Office
Prior art keywords
actuating button
housing
contact
balls
rotary switch
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Withdrawn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
EP98104873A
Other languages
German (de)
English (en)
Other versions
EP0878813A3 (fr
Inventor
Ulrich Brüggemann
Karl-Heinz Bauer
Walter Voll
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.)
Preh GmbH
Original Assignee
Preh 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 Preh GmbH filed Critical Preh GmbH
Publication of EP0878813A2 publication Critical patent/EP0878813A2/fr
Publication of EP0878813A3 publication Critical patent/EP0878813A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/02—Details
    • H01H19/10—Movable parts; Contacts mounted thereon
    • H01H19/11—Movable parts; Contacts mounted thereon with indexing means

Definitions

  • the invention relates to an electrical rotary switch according to the preamble of the claim 1.
  • Such a rotary switch is the subject of DE 28 24 584 A1 and there has circumferentially arranged contacts in the base body, which from one to the Axis of rotation acting in the radial direction can be contacted.
  • a tandem potentiometer is known from DE 89 12 785 U1, in which a Grinder carrier coupled to a drive shaft by means of a reduction gear is, so that one of the grinder supports at a smaller angle than the angle of the Drive shaft is adjusted. This measure allows a more sensitive Reach adjustment of the potentiometer.
  • the reduction gear is to be formed by a planetary gear, wherein the mentioned grinder carrier is connected to a planet gear which between Gear teeth of the drive shaft and a stationary concentric gear is arranged.
  • the object of the invention is to create a generic one Train rotary switch so that a reduced design effort sensitive adjustment is achieved.
  • Fig. 1 shows a cross section of an electrical rotary switch 1 with one in one Housing 2 mounted actuation button 3, the maximum actuation angle 4 is greater than a maximum contact position angle 5, as follows with reference to FIG. 5 is explained in more detail.
  • the actuating button 3 is mounted on three balls 6, the a cage washer 7 roll in a housing groove 8, which by a radial wall 9 and an axial wall 10 is formed, against which the balls 6 under the contact force of a Outer tapered surface 11 of the button 3 are loaded.
  • Fig. 2 shows one alternative embodiment, in which an inner cone tread 12 is provided.
  • the radial and axial wall running surfaces have contact segments and contact tracks 13, 14 on by at least one of the balls 6 in predetermined switching positions are short-circuited.
  • the balls 6 consist of a very good conductive material and can be coated with a precious metal. So there are no longer used Contact bridges, grinders, etc., so that there is an extraordinary reduction in price.
  • the actuating button 3 has a stop projection 15, the The actuation adjustment angle 4 is limited by housing stops 16, as shown in FIG. 5 can be seen.
  • This stop approach 15 contacts with during the actuation adjustment at least one of two stop lugs 17 of the cage disc 7, their arrangement takes place at an angle which is approximately half the maximum actuation adjustment angle 4 or the maximum contact position angle 5 corresponds.
  • This deviation of the angle from the theoretically achievable angle in the ratio of 100% to 50% can be experimentally or determined mathematically. It has been shown that the different sizes Circular paths of the point of attack of the outer tapered surface 11 on the balls 6 and Center of the balls 6 or circular paths of the point of attack of the inner tapered tread 12 increase the ratio at the balls 6 and the center of the balls 6 (approx. 100 % to 55%) or reduce (approx. 100% to 38%).
  • the invention is based on the knowledge that a ball or roller on which an object rolls, rolls at half the speed of the object or only half its way travels. This is a in the described embodiment of the rotary switch 1 Reduction of the actuation adjustment of the actuation button 3 to the adjustment of the Balls 6 or on the adjustment of the cage 7 leading the balls without, for example, Gear drives are required.
  • micro slip In rolling bearings one composed of rollers and slides Type of movement of the rolling elements occurs, the sliding is referred to as micro slip. In the present rotary switch 1, this microslip is increased by the different sized rolling circles of the ball support points 18, 19, 20, which are shown in Fig. 1 are by sliding the balls 6 on the contact segments and contact tracks 13, 14th be balanced.
  • the contact force of the outer and inner cone contact surfaces 11 and 12 is determined by a or several springs 21 clamped between the housing 2 and the actuating button 3 are produced.
  • a disc spring 22 which is in the installed state under Tension on a collar 23 of the actuating button 3 and on a stop collar 24 of the housing 2 supports.
  • Fig. 3 shows a spring according to FIG. 1, with the disc spring 22 on an attached End ring 26 rests instead of the housing 2.
  • FIGS. 1 and 2 differ in the design with external or Inner cone treads 11 and 12 respectively.
  • FIG. 1 shows the design with an outer cone tread 11 in which the radial wall 9 of the housing 2 points inwards, and Fig. 2 with Inner cone contact surface 12, in which the radial wall 9 points outwards.
  • Fig. 3 shows an embodiment in which contact is made on both sides by both sides of the contact segments 13 existing balls 6 and contact tracks 14 and Inner cone treads 12, the one inner cone tread 12 on the on the Actuation button 3 attached end ring 26.
  • Fig. 5 shows a section of the Fig. 2 by the button 3 and the housing 2, in which the balls 6 within Guide recesses 28 of the cage disk 7 are shown.
  • the through Housing stops 16 limited maximum actuation angle 4 des Actuation button 3 and the maximum contact position angle 5, which is half corresponds to the maximum actuation angle 4 at which the stop approaches 17 Cage disc 7 are arranged, shown.
  • Fig. 4 shows an embodiment in which there is a spring arrangement, which is a Latching for the actuating button 3, which is formed by depressions 29 of the Actuating button 3 or an end ring pushed onto this 30 and at least one ball 31 is formed, the ball 31 being formed between the housing 2 and actuating button 3 acting springs 21 is loaded.
  • a spring arrangement which is a Latching for the actuating button 3, which is formed by depressions 29 of the Actuating button 3 or an end ring pushed onto this 30 and at least one ball 31 is formed, the ball 31 being formed between the housing 2 and actuating button 3 acting springs 21 is loaded.
  • the actuating button 3 can have a latching, which by a Latching teeth 32 of the housing 2 or actuating button 3 is effected, in which the Spring arms 25 of the spring 21 clamped between the housing 2 and the actuating button 3 intervene to achieve an adjustment lock.
  • the ledges 27 led out of the housing 2 enable the electrical Connection of the contact track 14 to the positive pole of a voltage source.
  • the consumers can be connected.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Switches With Compound Operations (AREA)
EP98104873A 1997-05-16 1998-03-18 Interrupteur électrique rotatif Withdrawn EP0878813A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19720544A DE19720544C1 (de) 1997-05-16 1997-05-16 Elektrischer Drehschalter
DE19720544 1997-05-16

Publications (2)

Publication Number Publication Date
EP0878813A2 true EP0878813A2 (fr) 1998-11-18
EP0878813A3 EP0878813A3 (fr) 1999-05-19

Family

ID=7829642

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98104873A Withdrawn EP0878813A3 (fr) 1997-05-16 1998-03-18 Interrupteur électrique rotatif

Country Status (4)

Country Link
US (1) US5959269A (fr)
EP (1) EP0878813A3 (fr)
JP (1) JPH113632A (fr)
DE (1) DE19720544C1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19839187C2 (de) * 1998-08-28 2002-07-11 Preh Elektro Feinmechanik Elektrischer Drehschalter
US6225580B1 (en) * 1998-12-30 2001-05-01 Electronic Hardware Corporation Rotary switch contained inside a knob
DE10212992A1 (de) * 2002-03-22 2003-10-09 Siemens Ag Bedienelement, insbesondere für Kraftfahrzeugklimaanlagen
DE10313621A1 (de) * 2003-03-26 2004-10-28 Siemens Ag Bedienelement mit mehreren Handhaben
ES2221584B1 (es) * 2004-03-29 2005-10-01 Bsh Krainel S.A. Selector giratorio.
JP4622879B2 (ja) * 2006-02-17 2011-02-02 パナソニック株式会社 回転操作形エンコーダ

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1475800A (fr) * 1966-02-15 1967-04-07 Thomson Houston Comp Francaise Perfectionnements aux commutateurs électriques et notamment à ceux utilisés en haute tension
DE2017529A1 (de) * 1970-04-13 1971-10-28 Engert H D Elektrischer Schalter, insbesondere mehrpoliger Umschalter
FR2103700A5 (fr) * 1970-08-08 1972-04-14 Lucas Industries Ltd
US3980843A (en) * 1974-03-11 1976-09-14 Automobiles Peugeot Rotary electric switch in particular for an automobile vehicle luggage boot
EP0528418A1 (fr) * 1991-08-19 1993-02-24 Ichikoh Industries Limited Mirroir à commande à distance électrique

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1123740A (en) * 1965-10-12 1968-08-14 Int Standard Electric Corp Electrical miniature rotary switch
US4052573A (en) * 1975-02-17 1977-10-04 Murata Manufacturing Co., Ltd. Rotary or slide type switch assembly having recessed printed circuit substrate, interposed resilient bridging contact and movable printed circuit disc
DE2824584C2 (de) * 1978-06-05 1986-02-06 Ebe Elektro-Bau-Elemente Gmbh, 7022 Leinfelden-Echterdingen Mehrfach-Stufendrehschalter
DE8912785U1 (de) * 1989-10-28 1989-12-28 Preh-Werke GmbH & Co. KG, 97616 Bad Neustadt Tandem-Potentiometer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1475800A (fr) * 1966-02-15 1967-04-07 Thomson Houston Comp Francaise Perfectionnements aux commutateurs électriques et notamment à ceux utilisés en haute tension
DE2017529A1 (de) * 1970-04-13 1971-10-28 Engert H D Elektrischer Schalter, insbesondere mehrpoliger Umschalter
FR2103700A5 (fr) * 1970-08-08 1972-04-14 Lucas Industries Ltd
US3980843A (en) * 1974-03-11 1976-09-14 Automobiles Peugeot Rotary electric switch in particular for an automobile vehicle luggage boot
EP0528418A1 (fr) * 1991-08-19 1993-02-24 Ichikoh Industries Limited Mirroir à commande à distance électrique

Also Published As

Publication number Publication date
JPH113632A (ja) 1999-01-06
EP0878813A3 (fr) 1999-05-19
DE19720544C1 (de) 1998-04-30
US5959269A (en) 1999-09-28

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