DE3150217A1 - Rotary switch having a plurality of contact sets, latching arrangement and rotor drive - Google Patents

Rotary switch having a plurality of contact sets, latching arrangement and rotor drive

Info

Publication number
DE3150217A1
DE3150217A1 DE19813150217 DE3150217A DE3150217A1 DE 3150217 A1 DE3150217 A1 DE 3150217A1 DE 19813150217 DE19813150217 DE 19813150217 DE 3150217 A DE3150217 A DE 3150217A DE 3150217 A1 DE3150217 A1 DE 3150217A1
Authority
DE
Germany
Prior art keywords
rotor
rotary switch
stator contacts
contact
contacts
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Withdrawn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
DE19813150217
Other languages
German (de)
Inventor
Josef Ing. Ullrich (grad.), 6000 Frankfurt
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.)
Ullrich Josef Ing(grad) 6000 Frankfurt De
Original Assignee
Hartmann and Braun AG
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 Hartmann and Braun AG filed Critical Hartmann and Braun AG
Priority to DE19813150217 priority Critical patent/DE3150217A1/en
Publication of DE3150217A1 publication Critical patent/DE3150217A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00Switches 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
    • H01H19/54Switches 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 the operating part having at least five or an unspecified number of operative positions
    • H01H19/56Angularly-movable actuating part carrying contacts, e.g. drum switch
    • H01H19/563Angularly-movable actuating part carrying contacts, e.g. drum switch with an initial separation movement perpendicular to the switching movement

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Abstract

In this rotary switch, the stator contacts are located in a printed configuration concentrically on a printed-circuit board. Contact is made on rotation of the rotor by rotating the contact links which short the corresponding stator contacts with their contact fingers in a cyclic sequence. As a result of the interaction of a latching plate, which is coupled to the rotor, can move axially, is under spring pressure and whose cams engage into the latching crown of a base part of the rotary switch which is mounted in the printed-circuit board centrally with respect to the stator contacts, the contact fingers are lifted off the stator contacts whenever a switching change is made.

Description

Drehschalter mit mehreren Kontaktsätzen, RastanordnungRotary switch with several sets of contacts, latching arrangement

und Rotorantrieb Die Erfindung bezieht sich auf einen Drehschalter gemäß dem Oberbegriff des Anspruchs 1.and rotor drive The invention relates to a rotary switch according to the preamble of claim 1.

Bei einem in der DE-05 2502957 beschriebenen Drehschalter dieser Art mit Ringgehäuse liegen die kontaktierenden Teile der am Rotor befestigten Kontaktbrücken bei der Drehung des Rotors schleifend auf der Leiterplatte auf.In a rotary switch of this type described in DE-05 2502957 with the ring housing are the contacting parts of the contact bridges attached to the rotor dragging on the circuit board when the rotor rotates.

Eine an der Innenwand des Ringgehäuses befindliche Rastbahn ist in Eingriff mit Rastvorsprüngen am Außenumfang des Rotors, wodurch bei jeder Kontaktgabe eine Fixierung der jeweiligen Schalterstellung erfolgt, die mit geringer Kraft wieder überwunden wird.A locking track located on the inner wall of the ring housing is in Engaging with locking projections on the outer circumference of the rotor, whereby each time contact is made a fixation of the respective switch position takes place, which again with little force is overcome.

Die Verwendung solcher Schalter in Registriergeräten zur Neßstellenumschaltung setzt eine große Betriebssicherheit und lange Lebensdauer der Schalter vqraus, wobei man. noch bestrebt ist, die Abmessungen möglichst klein zu halten.The use of such switches in recording devices to switch between measuring points assumes a high level of operational reliability and long service life of the switch, whereby man the aim is to keep the dimensions as small as possible.

Zugleich ist es oft noch erwünscht, daß der Schalter hinsichtlich der Kontaktabstände und während des Schaltvorganges den Sicherheitsbestimmungen für den Explosionsschutz genügt.At the same time, it is often desirable that the switch with respect to the contact distances and the safety regulations during the switching process is sufficient for explosion protection.

Das Ziel der Erfindung besteht darin, einen Drehschalter so auszubilden, daß er diese für einen Meßstellenumschalter anzustrebenden Eigenschaften in hohem Maße aufweist.The aim of the invention is to provide a rotary switch so to train that he has these properties to be striven for for a measuring point switch to a large extent.

Die zur Ldsung dieser Aufgabe wesentlichen konstruktiven Merkmale sind in den Ansprüchen zusammengefaßt.The essential design features for solving this task are summarized in the claims.

Im folgenden wird der erfindungsgemäße Drehschalter anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. In der Zeichnung ist Fig.1 ein zentraler Schnitt durch den Drehschalter Fig.2 eine Anzucht der Unterseite der Rastplatte der Rastaaordnung und Fig.3 eine Ansicht der Statorkontakte des Drehschalters auf det Leiterplatte.In the following, the rotary switch according to the invention is based on an in the embodiment illustrated in the drawing explained in more detail. In the drawing Fig.1 is a central section through the rotary switch Fig.2 a cultivation of the underside the locking plate of the locking arrangement and FIG. 3 a view of the stator contacts of the rotary switch on the circuit board.

Nach Fig.1 ist auf einer Leiterplatte 1, auf der wie Fig.3 zeigt, Statorkontakte 2 und 3 in gedruckter Ausführung konzentrisch angeordnet sind, ein Basisteil 4 mit Hilfe eines Bolzens'5, einer Sicherungsscheibe 6 und einer Mutter 7 mittig u den Statorkontakten befestigt. Das Basisteil weist eine Rastkrone 8 auf. Der Bolzen 5 ist die Drehachse eines Rotors 9, der als rotationssymmetrische Schutzkappe ausgebildet ist. Eine achsial bewegliche Rastplatte 10 wird durch eine Feder 11 gegen die Rastkrone geu drückt, wobei ocken 12 auf der Unterseite der Rastplatte mit der Rastkrone in Eingriff kommen. Die achsiale Beweglichkeit der Rastplatte wird dadurch bewirkt, daß Leisten 13 der Schutzkappe in periphere Ausnehmungen 14 der Rastplatte eingreifen. Der Antrieb des Drehschalters erfolgt weber einen 2zahnkranz 15 an der Außenwand der Schutzkappe.According to Fig.1 is on a circuit board 1, on which, as Fig.3 shows, Stator contacts 2 and 3 are arranged concentrically in printed form, a Base part 4 with the help of a bolt'5, a lock washer 6 and a nut 7 in the middle u attached to the stator contacts. The base part has a locking crown 8. The bolt 5 is the axis of rotation of a rotor 9, which acts as a rotationally symmetrical protective cap is trained. An axially movable locking plate 10 is secured by a spring 11 Geu presses against the locking crown, with ocken 12 on the underside of the locking plate come into engagement with the locking crown. The axial mobility of the locking plate is effected in that strips 13 of the protective cap in peripheral recesses 14 engage the locking plate. The rotary switch is driven by a two-toothed ring 15 on the outer wall of the protective cap.

Wie aus Pig.2 ersichtlich, sind auf der Unterseite der Rastplatte zwei Kontaktbrücken 16, 17 mittels Schrauben 18, 19 und Justierstiften 20, 21 befestigt. Die Kontaktbrücken weisen jeweils zwei abgebogene, federnde Kontaktfinger 22, 2-3 und 24, 25 auf, deren Enden gefiedert sind und den Kontakt zwischen den einzelnen ringförmig angeordneten Statorkontakten 2 und dem ringfö=igen Statorkontakt 3 herstellen.As can be seen from Pig. 2, there are on the underside of the locking plate two contact bridges 16, 17 attached by means of screws 18, 19 and alignment pins 20, 21. The contact bridges each have two bent, resilient contact fingers 22, 2-3 and 24, 25, the ends of which are pinnate and the contact between the individual annularly arranged stator contacts 2 and the annular stator contact 3 manufacture.

Bei der Drehung des Rotors werden während des Umschaltens die Kontaktfinger durch die Rastanordnung von den Statorkontakten abgehoben. Die für die Kontaktgabe erforderliche exakte Lage justierung des Basisteils zu den Statorkontakten wird dadurch gewährleistet, däß am Basisteil Zapfen 26, 27 für vorgebohrte Löcher 28, 29 in der Leiterplatte vorgesehen sind.When the rotor rotates, the contact fingers are switched over lifted from the stator contacts by the latching arrangement. The one for making contact required exact position adjustment of the base part to the stator contacts this ensures that pins 26, 27 for pre-drilled holes 28, 29 are provided in the circuit board.

In Fig.3 sind die von den Statorkontakten abgehenden Leiterbahnen nicht dargestellt. Sie können z.B. auf der Unterseite der Leiterplatte verlaufen.In FIG. 3, the conductor tracks going out from the stator contacts are shown not shown. For example, they can run on the underside of the circuit board.

Durch das Abheben der Kontaktbrücke während des Umschaltens wird die Schleifbewegung der Kontaktfedern auf ein Minimum begrenzt, was zur Schonung der Leiterplatte und der Kontakte beiträgt. Außerdem lassen sich dadurch auch die Sicherheitsbestimmungen für den Explosionsschutz bei den noch zulässigen kleinsten Kontaktabstinden gut einhalten.By lifting the contact bridge while switching, the Sliding movement of the contact springs is limited to a minimum, which protects the PCB and the contacts contributes. In addition, this also allows the safety regulations good for explosion protection with the smallest contact distances that are still permitted retain.

LeerseiteBlank page

Claims (3)

Eatentansprtche ,13 DrehschaLter mit mehreren Kontakteätzen, Rastanordnung und Rotorantrieb, insbesondere Meßstellenschalter für den Einbau-in Leiterplatten, auf denen die Statorkontakte in gedruckter Ausführung konzentrisch angeordnet sind und durch'mindestens eine umlaufende Kontaktbrücke zyklisch überbrückt werden, dadurch gekennzeichnet, daß eine auf der Leiterplatte (1) mittig zu den Statorkontakten (2, 3) zu befestigendes Basisteil (4) mit einer Rastkrone (8) vorgesehen ist, in welche die Nocken (12) einer durch Federdruck anliegenden Rastplatte (10) eingreifen, die achsial verschiebbar mit dem Rotor (9) gekoppelt ist und die Kontaktbrücken (16, 17) trägt und während des Umschaltens in Zusammenwirken mit der Rastkrone ein Abheben der Kontaktbrücke von den Statorkontakten bewirkt.Eatentansprtche, 13 rotary switches with several sets of contacts, latching arrangement and rotor drive, especially measuring point switches for installation in printed circuit boards, on which the stator contacts are arranged concentrically in printed form and are cyclically bridged by at least one circumferential contact bridge, thereby characterized in that one on the circuit board (1) centered on the stator contacts (2, 3) to be fastened base part (4) with a locking crown (8) is provided in which the cams (12) of a snap-in plate (10) applied by spring pressure engage, which is axially displaceably coupled to the rotor (9) and the contact bridges (16, 17) carries and during the switching in cooperation with the locking crown The contact bridge is lifted off the stator contacts. 2. Drehschalter nach Anspruch 1, dadurch gekennzeichnet, daß sich das Basisteil (4) und die Rastplatte (10) mit einer Druckfeder (11) innerhalb eines Rotors (9) befinden, der als rotationssymmetrische Schutzkappe ausgebildet ist.2. Rotary switch according to claim 1, characterized in that the base part (4) and the locking plate (10) with a compression spring (11) within a Rotor (9) are located, which is designed as a rotationally symmetrical protective cap. 3. Drehschalter nach Anspruch 2, dadurch gekennzeichnet, daß die Innenwand des Rotors (9) achsial verlaufende Leisten (13) aufweist, die in periphere Ausnehmungen (14) der Rastplatte (10) eingreifen.3. Rotary switch according to claim 2, characterized in that the inner wall of the rotor (9) has axially extending strips (13) which are inserted into peripheral recesses (14) engage the locking plate (10).
DE19813150217 1981-12-18 1981-12-18 Rotary switch having a plurality of contact sets, latching arrangement and rotor drive Withdrawn DE3150217A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19813150217 DE3150217A1 (en) 1981-12-18 1981-12-18 Rotary switch having a plurality of contact sets, latching arrangement and rotor drive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813150217 DE3150217A1 (en) 1981-12-18 1981-12-18 Rotary switch having a plurality of contact sets, latching arrangement and rotor drive

Publications (1)

Publication Number Publication Date
DE3150217A1 true DE3150217A1 (en) 1983-06-30

Family

ID=6149101

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19813150217 Withdrawn DE3150217A1 (en) 1981-12-18 1981-12-18 Rotary switch having a plurality of contact sets, latching arrangement and rotor drive

Country Status (1)

Country Link
DE (1) DE3150217A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0321423A1 (en) * 1987-12-17 1989-06-21 INDUSTRIE MAGNETI MARELLI S.p.A. An ignition switch for motor vehicles
EP0376855A1 (en) * 1988-12-30 1990-07-04 RUSSENBERGER, Société à responsabilité limitée Electrical rotary switch, in particular a manually operated one
FR2799303A1 (en) * 1999-09-30 2001-04-06 Valeo Electronique ELECTRIC SWITCH FOR CONTROL PANEL, PARTICULARLY FOR MOTOR VEHICLE EQUIPMENT

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0321423A1 (en) * 1987-12-17 1989-06-21 INDUSTRIE MAGNETI MARELLI S.p.A. An ignition switch for motor vehicles
EP0376855A1 (en) * 1988-12-30 1990-07-04 RUSSENBERGER, Société à responsabilité limitée Electrical rotary switch, in particular a manually operated one
FR2641408A1 (en) * 1988-12-30 1990-07-06 Apr Composants ROTARY ELECTRIC SWITCH, IN PARTICULAR WITH MANUAL CONTROL
FR2799303A1 (en) * 1999-09-30 2001-04-06 Valeo Electronique ELECTRIC SWITCH FOR CONTROL PANEL, PARTICULARLY FOR MOTOR VEHICLE EQUIPMENT

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Legal Events

Date Code Title Description
8120 Willingness to grant licences paragraph 23
8127 New person/name/address of the applicant

Owner name: ULLRICH, JOSEF, ING.(GRAD.), 6000 FRANKFURT, DE

8139 Disposal/non-payment of the annual fee