DE338862C - Electric rotary switch - Google Patents
Electric rotary switchInfo
- Publication number
- DE338862C DE338862C DENDAT338862D DE338862DD DE338862C DE 338862 C DE338862 C DE 338862C DE NDAT338862 D DENDAT338862 D DE NDAT338862D DE 338862D D DE338862D D DE 338862DD DE 338862 C DE338862 C DE 338862C
- Authority
- DE
- Germany
- Prior art keywords
- contact
- rotary switch
- contact carrier
- electric rotary
- spring
- 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
Links
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
- H01H19/54—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 the operating part having at least five or an unspecified number of operative positions
- H01H19/56—Angularly-movable actuating part carrying contacts, e.g. drum switch
Landscapes
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Contacts (AREA)
Description
Bekannt sind Drehschalter, bei denen die stromführenden Schleif federn unter Druck an den Kontakten des beweglichen Kontaktträgers anliegen. Bei der Drehung des Kontaktträgers legen sich dabei die Schleiffedern infolge der nötigen Federvorspanmmg der Schleiffedern ebenfalls unter Druck an den isolierenden Teil des Kontaktträgers an und erzeugen hier mit der Zeit einen metallischenRotary switches are known in which the current-carrying grinding springs under pressure the contacts of the movable contact carrier are in contact. When rotating the contact carrier The slide springs are placed due to the necessary spring preload Slide springs also under pressure on the insulating part of the contact carrier and create a metallic one here over time
ίο Überzug, der zum ungewollten Stromübergang oder' zur Erwärmung des Kontaktträgers führen kann. Gleichzeitig werden die Schleiffedern infolge der abgeriebenen Teile im Querschnitt geschwächt. Ein weiterer Nachteil dieser Schalter besteht darin, daß die Reibung zwischen der metallischen Schleiffeder und dem meist keramischen Kontaktträger eine rasche Beschleunigung des Kontaktträgers bei öffnen des Kontaktes verhindert, was zur Funkenbildung und damit zur Aufrauhung der Schleiffederoberfläche führt, welche Aufrauhung wieder eine Vergrößerung der Reibung und damit Verschlimmerung der genannten Übelstände zur Folge hat.ίο Coating that leads to unwanted current transfer or 'can lead to heating of the contact carrier. At the same time, the Slip springs weakened in cross-section as a result of the abraded parts. Another Disadvantage of this switch is that the friction between the metallic Slip spring and the mostly ceramic contact carrier a rapid acceleration of the Contact carrier when opening the contact prevents what to spark formation and thus leads to the roughening of the slide spring surface, which roughening leads to an enlargement the friction and thus aggravation of the abuses mentioned.
Bei der vorliegenden Erfindung ist nun eine Berührung der Schleiffeder mit dem beweglichen Kontaktträger dadurch ausgeschlossen, daß die Schleiffeder oder eine Zunge derselben sich nach Verlassen des sie zurückdrückenden Kontaktes an das Material des Unterteils anlegt, bevor noch eine Berührung von Schleiffeder und Kontaktträger möglich ist.In the present invention, there is now a contact between the slide spring and the movable one Contact carrier excluded by the fact that the slide spring or a tongue of the same after leaving the contact pushing back, it rests against the material of the lower part before any contact of slide spring and contact carrier is possible.
Fig. ι und 2 zeigen zwei Ausführungsformen der Erfindung. Bei der Ausführung nach' Fig. ιa bis c sind-im Schaltersockel Gruben α untergebracht, in welche die Zunge b der Schleiffeder eingreift. Liegt kein Kontakt an der Schleiffeder, so kann diese infolge ihrer Vorspannung nur vorgehen, bis die Zunge b an der Vorderwand d der Grube α anliegt (Fig. ic). Eine Berührung der Schleiffeder e mit dem Kontaktträger/ ist daher ausgeschlossen.Fig. Ι and 2 show two embodiments of the invention. In the embodiment according to 'Fig. Ιa to c - pits α housed in the switch base, in which the tongue b of the slide spring engages. If there is no contact with the slide spring, it can only proceed due to its pretension until the tongue b rests against the front wall d of the pit α (FIG. 1c). A contact of the slide spring e with the contact carrier / is therefore excluded.
Bei der Ausführung nach Fig. 2a bis c sind im Schaltersockel Nasen α oder ein Ringwall f vorgesehen, gegen welche das Schleiffederende d sich anlegt, bevor es an die Kontaktträgerwand e anstoßen kann (Fig. 2c).In the embodiment according to FIGS. 2a to c, noses α or an annular wall f are provided in the switch base, against which the slide spring end d rests before it can abut the contact carrier wall e (FIG. 2c).
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE338862T |
Publications (1)
Publication Number | Publication Date |
---|---|
DE338862C true DE338862C (en) | 1921-07-06 |
Family
ID=6223004
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT338862D Expired DE338862C (en) | Electric rotary switch |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE338862C (en) |
-
0
- DE DENDAT338862D patent/DE338862C/en not_active Expired
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