DE2058658A1 - Schaltmechanik fuer Kipphebelschalter - Google Patents
Schaltmechanik fuer KipphebelschalterInfo
- Publication number
- DE2058658A1 DE2058658A1 DE19702058658 DE2058658A DE2058658A1 DE 2058658 A1 DE2058658 A1 DE 2058658A1 DE 19702058658 DE19702058658 DE 19702058658 DE 2058658 A DE2058658 A DE 2058658A DE 2058658 A1 DE2058658 A1 DE 2058658A1
- Authority
- DE
- Germany
- Prior art keywords
- rocker arm
- switching element
- axis
- contact
- roller
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
- H01H23/02—Details
- H01H23/12—Movable parts; Contacts mounted thereon
- H01H23/16—Driving mechanisms
- H01H23/168—Driving mechanisms using cams
Description
Jf. A. Mtuhd
DlpUng. W. Dahlke
Refref h bs! Köln
Frankenforst 137
25. November 197ο
ILLINOIS TOOL WORKS, Inc. Chioago, Illinois (V. St. A. )
Sohaltmechanik für Kipphebelsohalter
Die Erfindung betrifft eine Sohaltmeohanik für einen umsohnappbaren
Kipphebelschalter, welohe fehlschaltungsfrei
ist.
Elektrische Kipphebelsohalter mit einem federgespannten
Kurvenabtaster in der form einer Holle am Kipphebel werden
109824/1220
verwendet, um einem schwenkbar gelagerten Schaltglied eine Schaukelbewegung zu verleihen, wobei das Schaitglied eine
Kurvenfläche aufweist, die in Anlage an die Holle bringbar ist, um eine Bewegung des Schaltgliedes über die Mitte hinaus
zu bewirken, wie das aus den US-Patentschriften 2 78ο 691
und 3 322 9H bekannt ist. Da die Schwenkachsen für den Kipphebel und für das schaukelnde Schaltglied beim Gegenstand
der US-Patentschrift 2 78o 691 beide auf einer Seite des Kontaktpunktes zwischen der Rolle und der Kurvenfläche liegen,
ist die Schaltmechanik nioht so unstabil bzw. beständig gegen Fehlschaltungen, wie das eine Mechanik ist, bei der die
Kontaktflächen der Rolle bzw. der Kurve zwischen den AnIenkpunkten
der beiden angelenkten Teile liegen. Aus der US-Patentschrift 2 633 51 ο ist eine Rolle in Verbindung mit
einem Kontaktteil bekannt, bei der die Lagerung für die Rolle nioht schwenkbar vorgesehen ist, sondern die Lagerung an
. einem Ende einer Feder vorgesehen ist. Die Rolle bei diesem bekannten Gegenstand hat keine eindeutig festgelegte Umsohnapplage
über die Mitte hinaus, da dort die waoklige Federlagerung zu einer Verlagerung des effektiven Drehpunktes mit
den Änderungen in der Belastung führt, die auf das verankerte Ende der Feder ausgeübt wird, während sie gebogen wird.
Die Kipphebelsohaltmeohanik gemäß der Erfindung umfaßt einen
Kipphebel, der schwenkbar in dem Deckel eines Sohaltergehäuses
109824/ 1220
gelagert ist, sowie ein schaukelartiges Schaltglied, daö
schwenkbar um eine Achse herum schaukelbar ist, die quer
zu seiner länge in einem U-förmigem Lagerbügel sitzt, der unten am Sehaltergehäuse angebracht ist. Die Enden des
Schaltgliedes können bewegliche Schalterkontakte tragen, die zur Anlage an Festkontakt en im G-ehäuse eingerichtet
sind. In einer Abwandlung "der Erfindung können die Enden des schaukelartigen Schaltgliedes dazu verwendet werden,
die Druckknöpfe von einem oder mehreren Schaltern nieder
zu drücken, die am Gehäuse angebracht sind.
Das Schaltglied ist mit zwei aufrecht stehenden Laschen versehen, in denen die Welle einer Rolle gelagert ist, die
in einer solchen Weise in den Schenkeln sitzt, daß die Achse der Rolle parallel zur Schwenkachse des Schaltgliedes in
einer Ebene im wesentlichen rechtwinklig zur Hauptebene des Schaltgliedes liegt, die die Schwenkachse des Sohaltgliedes
enthält. Ein federgespannter Nockenteil ist zur Anlage an der Rolle des Schaltgliedes vorgesehen, um eine über die
Mitte gehende Bewegung des Schaltgliedes zu bewirken. Der Nockenteil sitzt teleskopartig im Kipphebel. Der Nockenteil
am Kipphebel kann in den verschiedensten Formen vorgesehen sein, beispielsweise in der Form eines gesohoßartigen Teils,
der ständig in Anlage an die Rolle gespannt ist. Wenn der
1 0 9 8 24/1220
Nockenteil im Kipphebel durch die Bewegung des Kipphebels
über eine Linie hinaus bewegt wird, die die Drehachse des Schaltgliedes und die Drehachse der Rolle verbindet, erfolgt
eine Schnappbewegung der Rolle und des Schaltgliedes um die Drehachse des Sohaltgliedes über die Mitte hinaus,
was das Schaltglied in seine gegenüberliegende Endlage führt. Wegen des Vorhandenseins der Rolle am Schaltglied
ist der Mechanismus extrem fehlschaltungsfrei, da die
Rolle rollt, während der Efockenteil des Kipphebels an
ihrer Fläche entlang bewegt wird. In dem die Drehachse für das Sohaltglied und die Drehachse für den Kipphebel
an Punkten liegen, die auf gegenüberliegenden Seiten des Kontaktpunktes zwischen dem Nookenteil und der Rolle
liegen, ist die Mechanik extrem unstabil in der Hinsicht, daß es fast unmöglich ist, mit ihr eine Fehlschaltung
durchzuführen, im Gegensatz zu einer Mechanik, bei der beide Drehachsen auf der gleichen Seite des Kontaktpunktes
liegen.
Die Erfindung ist im nachfolgenden anhand eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnung näher erläutert.
In der Zeichnung sind:
- 5 109824/1220
Mg. 1 ein Schnitt durch ein Schaltergehäuse,
das mit der erfindungsgemäßen Suhaltmeohanik
ausgerüstet ist,
Mg. 2 ein Schnitt an der linie 2-2 der Mg. 1,
Mg. 3 eine auseinandergezogene Darstellung,
in der die Beziehung zwischen der Rolle, dem Schaltglied und dem Lagerbügel des
Schaltgliedes gezeigt ist, und
Mg. 4 eine schematische Darstellung einer
Variante der Sohaltmechanik, bei der das Schaltglied die Druckknopfe eine
Anzahl von Schaltern anstelle von Kontakten selbst wie in Mg. 1 betätigt.
Gemäß der Darstellung in Fig. 1 sitzt die Sohaltmeohanik in einem Schaltergehäuse 12, das zwei Festkontakte 14, 16
lagert, die jeweils einstückig mit außensitzenden Ansohluß-
fahntn 18, 2ο verbunden sind. Eine gemeinsame Ansohlußfahne
ist am Gehäuse und an einem im wesentlichen U-förmigen
Bügel 24 angebracht, und zwar mit Hilfe eines Nitt· 26.
-6-109824/1220
Der U-förmige Bügel 24 weist zwei nach innen vorstehende
Verformungen 28 auf, die Drehlager bilden, welche zum Eingreifen in entsprechenden Vertiefungen 3o vorgesehen sind,
die in gegenüberliegende Seiten des Schaltgliedes 32 eingeformt
sind. In der Mitte des Schaltgliedes 32 ist ein Lagerbügel
34 angeordnet, der mit dem Schaltglied 32 verbunden ist und zwei Lagerlaschen 36 aufweist, die an den Wellenenden
38 einer Rolle 4o angreifen. Bewegliche Kontakte 42, 44 fc sind an gegenüberliegenden Enden des Schaltgliedes 32 angebracht,
und sie sind zur wahlweisen Anlage an den Pestkontakten 14, 16 vorgesehen.
Ein Kipphebel 48 zur Betätigung des Schalters ist im Sohalterdeokel
5o schwenkbar gelagert. Der Schalterdeckel 5o besteht
aus einer oberen Platte 52 mit sich nach oben erstreckenden,
kugelförmig geformten Verformungen 54 zum Angreifen an einer Kugelfläche 56, die am Kipphebel angeformt ist. Mit der
oberen Platte 52 ist eine untere Platte 58 verbunden, die w sich naoh unten erstreckende, kugelförmig ausgebildetet
Verformungen 6o aufweist, die zum Angreifen an dem unteren !Teil der kugelförmigen Fläohe 56 am Kipphebel 48 vorgesehen
ist. Um eine feste Lagerung des kugelförmigen Teils 56 des Kipphebels 48 in den Platten 52, 58 aufrechtzuerhalten,
sitzt ein Streifen aus einem elastischen Werkstoff 62, beispielsweise aus Gummi, zwisohen den Platten 52 und 58, um
109824/1220 -7-
die kugelförmigen Verformungen 54 und 6o in einem leichten
Andruck aa Kipphebel halten zu können. Die Hatten 52 und
sowie der Streifen 62 des Deckels 5o können mit Hilfe von Mieten 64 zusammengehalten werden. Ein Faser-Uockenteil 7o
mit einer gesohoßartigen Spitze sitzt teleskopartig im Kipphebel 48 und umfaßt eine konische Nockenfläche 72,
die an ihrem Ende in einrsphärischen Spitze 74 endet.
Bei der Betätigung der Schaltmechanik wird der Kipphebel aus
seiner in Vollinien in Fig. 1 gezeigten Lage in die zweite dargestellte gestrichelte Lage bewegt. Während dieser Bewegung
wandert der Nockenteil 7o nach oben gegen die Vorspannung
einer Feder 76, während die Nockenflache 72 nach
oben an der Fläche der Holle 4o entlang wandert. Da die Holle 4o mit ihrer Welle in den Lagerlaschen 36 sitzt, kann
sie sich frei drehen, während die Nookenflächen 72 und 74 über sie hinweg wandern, wobei nur eine sehr geringe Reibung
entsteht, die sich'der Bewegung des Kipphebels 48 entgegenstellt. Ferner erhöht das Hochwandern des Nockenteils 7o
gegen die Vorspannung der Feder 76 die auf die Rolle 4o des Schaltglieds 32 ausgeübte Kraft, und das wiederum führt
dazu, daß die Kraft erhöht wird, mit der der bewegliche Kontakt 42 an den Festkontakt 14 angedrüokt wird. Diese erhöhnte
Kraft auf den Kontakten wird augenblicklich gelöst, und. der bewegliche Kontakt 44 schnappt in eine Anlage am
109824/1220 "8"
Pestkontakt 16, während der Berührungspunkt zwischen der
Nockenspitze 74 und der Rolle 4o über den Punkt a an der
Rolle hinauswandert. Der Punkt a ist der Mittelpunkt, bei dem der Berührungspunkt in einer Flucht mit der Linie b liegt,
die durch die Achse des Drehlagers 28 des Schaltgliedes und
die Rollenwelle 38 geht. In dem sichergestellt wird, daß die Kontaktkraft während eines Schaltvorgangs nicht geringer wird,
kann der Schalter für eine holuß Betriebsdauer sorgen, ohne
daß eine Funkenbildung entsteht.
In dem die Rolle 4o gemäß der Darstellung in Fig. 1 gelagert
wird, derart, daß die Achse ihrer Lagerwelle 38 und ihr Berührungspunkt a an der Kurvenfläche 74 zwischen dem Drehpunkt
für den Kipphebel 48 und dem Drehpunkt 28 für das Schaltglied liegt, befinden sich der Nookenteil 7o und die
Rolle 4o in einer extrem unstabilen Lage gegeneinander, während sich die Nockenspitze 74 der Linie b nähert, an der
das Schaltglied 32 über die Mitte umschnappt. Dieser un-
stabile Zustand wird noch durch die Tatsache verstärkt, daß der Nockenteil 7o sich zu diesem Zeitpunkt in seiner äußersten
oberen Lage befindet, so daß die meiste Federkraft auf die Holle ausgeübt wird. Da die Flächen 74 und 4o jeweils gekrümmt
sind und sich in rollendem Kontakt befinden, während sie die Linie b passieren, tritt keine Gleitreibung auf,
die die Sohnappwirkung des Sahaltgliedes 32 hämmen könnte,
109824/1220 ~9~
wie das der Pall wäre, wenn sich die jeweils zusammenwirkenden feile in einer gleitenden Anlage anstatt in einer
rollenden Anlage "befinden würden.
In Pig. 4 ist die Schaltmechanik gemäß der Erfindung schematises in Verbindung mit zwei Druckknopfschaltern
8o, 82 gezeigt, die Druckknopfe 84 "bzw. 86 aufweisen.
Durch die Sohaltmechanik sollen die elektrischen Kontakte
innerhalb der Schalter betätigt werden. Da bestimmte Abnehmer von Schaltern vorschreiben, daß die Aohse des
Kipphebels in Richtung auf die Kontakte zeigt, die geschlossen sind ( eine Bedingung, die durch das in Pig.
gezeigte Ausführungsbeispiel nicht erfüllt ist, bei der die Drehachse 28 unter anstatt über der Aohee der Rollenwelle
38 liegt), kann da« in Pig. 4- gezeigte Ausführungen
beispiel verwendet werden, bei der das Sohaltglied 32*
lediglioh andere Schalter betätigt, anstatt selbst Kontakte
zu tragen, da die Sohalter 8o, 82 ohne weiteres mit Kontakten
erhältlich sind, die entweder in einer normalerweise offenen oder in einer normalerweise geschlossenen Lage
sitzen.
1098 24/1220
Claims (6)
- -1ο-PatentansprücheSchaltmechanik zum Verbinden und zum Unterbrechen der Kontakte eines elektrischen Schalters, bestehend aus einem Gehäuse, einem in dem Gehäuse schwenkbar gelagerten Kipphebel und einem in dem Gehäuse schwenkbar gelagerten Schaltglied, an dem der Kipphebel angreift, derart, daß die Schalterkontakte gegeneinander bewegt werden, gekennzeichnet durch eine Drehlagerung (24) in dem Gehäuse (12) zur Lagerung des Sohaltglieds (32), mindestens eine auf dem Schaltglied (32) gelagerte Holle (4o) zur Drehbewegung um eine Achse in ihm, die in einem festgelegten Abstand von der Achse der Drehlagerung (24) für das Sohaltglied (32) entfernt liegt, und einen zusammenwirkenden Teil (7o), der federnd in Anlage an das Schaltglled (32) vorgespannt ist und sur Bewegung am Kipphebel (48) in Richtung der Länge dee Kipphebels (48) gelagert ist, wobei der zusammenwirkendeTeil (7o) eine äußere Fläche (72, 74) hat, die federnd In Anlage an die Rolle (4o) des Schaltgliedea (32) gespannt ist und zum Sohaukeln des Schaltglieds (32) in die eine oder in die andere Richtung eingerichtet ist, während es an einem Punkt an der Rolle (4o) vorbei wandert,-11-109824/1220BAD ORIGINALder in einer Linie mit der Achse der Rolle (4o) und der Achse der Lagerung (24) liegt.
- 2. Schaltmechanik nach Anspruch 1, dadurch gekennzeichnet, daß die Achse der Rolle (4o) zwischen dem zusammenwirkenden Teil (7o) und der Achse der Lagerung (24) sitzt.
- 3. Sehaltmechanik nach Anspruch 1, dadurch gekennzeichnet, daß der zusammenwirkende Teil (7o) eine im wesentlichen konische Form hat, die in einer im wesentlichen kugelförmigen Spitze endet.
- 4. Sohaltmechanik nach Anspruch 1, dadurch gekennzeichnet, daß das Schaltglied (32) eine Schaukelplatte umfaßt, die einen Kontakt (42, 44) an mindestens einem ihrer Enden trägt, wobei der Kontakt (42, 44) an der Schaukelplatte in und außer Anlage an einem Pestkontakt (14, 16) bewegbar ist, der in dem Gehäuse (12) sitzt.
- 5. Schaltmechanik nach Anspruoh 4, dadurch gekennzeichnet, daß die Schaukelplatte Kontakte (42, 44) auf beiden Enden hat, die abwechselnd in Anlage mit zwei zusammenwirkenden Festkontakten109824/1220- " "- 12 (14, 16) im Gehäuse (12) bringbar sind.
- 6. Sohaltmeohanik nach einem der Ansprüche 1 bis 5, dadurch ge kennzeichnet, daß zusammenwirkende Auflaufteile, von denen mindestens einer eine Rolle (4o) ist, an dem Schaltglied (32)h und am Kipphebel (48) vorgesehen sind, wobei die Auflauffläche am Schaltglied (32) in einem festgelegten Abstand gegenüber der Lagerung (28) angeordnet ist und wobei die Auflauffläche (72, 74) am Kipphebel (48) im Kipphebel (48) zur axialen Bewegung ihm gegenüber federnd gelagert ist, wobei die Auflaufteile (7o, 4o) sich an Punkten an ihren Flächen berühren, die zwischen den Drehlagern (28) für das Schaltglied (32) und für den Kipphebel (48) sitzen, derart, daß ein Umschnappen des Sohaltglieds (32) von einen seiner Bewegungsenden zum anderen bewirkt wird, wenn die Auflaufteile (7o, 4o) durch den |£Lpphebel-Teil (7o) gegeneinander bewegt werden, derart, daß sie die Linie passieren, die durch die Drehachse der Rolle (4o) und die Drehachse des Teils geht, an dem die Lagerung erfolgt.109824/ 1 220
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US88104969A | 1969-12-01 | 1969-12-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2058658A1 true DE2058658A1 (de) | 1971-06-09 |
Family
ID=25377679
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19702058658 Pending DE2058658A1 (de) | 1969-12-01 | 1970-11-28 | Schaltmechanik fuer Kipphebelschalter |
Country Status (6)
Country | Link |
---|---|
US (1) | US3598943A (de) |
JP (1) | JPS517304B1 (de) |
CA (1) | CA921958A (de) |
DE (1) | DE2058658A1 (de) |
FR (1) | FR2072410A5 (de) |
GB (1) | GB1308393A (de) |
Cited By (1)
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DE3246819A1 (de) * | 1982-12-17 | 1984-06-20 | SWF-Spezialfabrik für Autozubehör Gustav Rau GmbH, 7120 Bietigheim-Bissingen | Elektrischer schalter, insbesondere fuer kraftfahrzeuge |
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US11826047B2 (en) | 2021-05-28 | 2023-11-28 | Cilag Gmbh International | Stapling instrument comprising jaw mounts |
US11957337B2 (en) | 2021-10-18 | 2024-04-16 | Cilag Gmbh International | Surgical stapling assembly with offset ramped drive surfaces |
US11877745B2 (en) | 2021-10-18 | 2024-01-23 | Cilag Gmbh International | Surgical stapling assembly having longitudinally-repeating staple leg clusters |
US11937816B2 (en) | 2021-10-28 | 2024-03-26 | Cilag Gmbh International | Electrical lead arrangements for surgical instruments |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2633510A (en) * | 1951-09-13 | 1953-03-31 | Hetherington Inc | Electric switch |
GB765795A (en) * | 1954-05-04 | 1957-01-16 | Rotax Ltd | Push-button electric switches |
US2780691A (en) * | 1955-02-09 | 1957-02-05 | Hart Mfg Co | Electric switch |
US2972663A (en) * | 1958-02-03 | 1961-02-21 | Allied Control Co | Toggle switch |
US2961505A (en) * | 1959-07-10 | 1960-11-22 | Allied Control Co | Toggle switch |
FR1306612A (fr) * | 1960-06-20 | 1962-10-19 | Combiné interrupteur-disjoncteur insensible aux chocs mécaniques | |
US3351729A (en) * | 1965-06-18 | 1967-11-07 | Saab Ab | Switch means for selective control of plural circuits |
-
1969
- 1969-12-01 US US881049A patent/US3598943A/en not_active Expired - Lifetime
-
1970
- 1970-10-30 CA CA097000A patent/CA921958A/en not_active Expired
- 1970-11-25 FR FR7042397A patent/FR2072410A5/fr not_active Expired
- 1970-11-28 DE DE19702058658 patent/DE2058658A1/de active Pending
- 1970-12-01 GB GB5708670A patent/GB1308393A/en not_active Expired
- 1970-12-01 JP JP45105752A patent/JPS517304B1/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3246819A1 (de) * | 1982-12-17 | 1984-06-20 | SWF-Spezialfabrik für Autozubehör Gustav Rau GmbH, 7120 Bietigheim-Bissingen | Elektrischer schalter, insbesondere fuer kraftfahrzeuge |
Also Published As
Publication number | Publication date |
---|---|
FR2072410A5 (de) | 1971-09-24 |
US3598943A (en) | 1971-08-10 |
JPS517304B1 (de) | 1976-03-06 |
CA921958A (en) | 1973-02-27 |
GB1308393A (en) | 1973-02-21 |
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