CH238042A - Spring-loaded clamping screw for electrical power connections. - Google Patents

Spring-loaded clamping screw for electrical power connections.

Info

Publication number
CH238042A
CH238042A CH238042DA CH238042A CH 238042 A CH238042 A CH 238042A CH 238042D A CH238042D A CH 238042DA CH 238042 A CH238042 A CH 238042A
Authority
CH
Switzerland
Prior art keywords
spring
screw
electrical power
power connections
clamping screw
Prior art date
Application number
Other languages
German (de)
Inventor
Oerlikon Maschinenfabrik
Original Assignee
Oerlikon Maschf
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 Oerlikon Maschf filed Critical Oerlikon Maschf
Publication of CH238042A publication Critical patent/CH238042A/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw
    • H01R4/363—Conductive members located under tip of screw with intermediate part between tip and conductive member
    • H01R4/366—Conductive members located under tip of screw with intermediate part between tip and conductive member intermediate part attached to the tip of the screw
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/50—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw
    • H01R4/52—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw which is spring loaded

Landscapes

  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)

Description

  

  Gefederte Klemmschraube für elektrische Stromanschlüsse.    Für das Anschliessen von elektrischen Lei  tern aus einem Metall, bei welchem der Lei  ter unter Druck     Nacligiebigkeit    zeigt, sind       zalilreielle    Arten von Schraubenklemmen     und          Klemmschrauben    entwickelt worden. Einige  einfache Lösungen     bestelien    darin, in einer  Höhlung des     Schraubensellaftes    eine     zylin-          drisclie    Schraubenfeder unterzubringen.

   Die  Feder stützt sich auf ein aus dem Schrauben  fuss herausragendes     Druchstück    und wird  beim Anziehen der Klemmschraube     zusam-          mengepresst,    wodurch auch bei     Ausdelinun-          gen    und     Zusammenzieliungen    des Leiterquer  schnittes stets ein genügender Kontakt ge  sichert ist. Bei     unbenützter    Schraube sollen       Druchstüek    und Feder unverlierbar in der  Schraube sitzen.

   Hierzu hat man unter ande  rem eine Kegelfeder verwendet, deren brei  teres Ende im     #Schraubenschaft    eingeklemmt  ist, während das schmälere Ende der Feder  über eine konstruktiv einfache     Klemm-          sehraube,    die aber wegen der Kegelfeder       fabrikatorisch    kostspieliger ist als eine  Schraube mit zylindrischer     Sehraubenfeder.            Erfindungsgemäss    wird, um den     fabrika-          torischen    Vorteil der     zylindriselien    Schrau  benfeder beibehalten zu können, ihre Be  festigung im     Schraubeizschaft    dadurch be  wirkt,

       dass    die Höhlung gegen den Schrau  benkopf hin enger ist als in ihrem übrigen  Teil und die Feder daselbst festhält. Das       Druckstüek    ist in der Höhlung geführt und  steckt mit einem konisch gestalteten Dorn  fest im losen Federende.  



  Die     beiliegendeZeichnung    zeigt     imSchnitt     und stark vergrössert ein Ausführungsbeispiel  einer Schraube gemäss der Erfindung.<B>1</B> ist  der Schraubenkopf und 2, der     ScUraubenschaft     mit einer Aushöhlung<B>3,</B> die gegen den Schrau  benkopf hin einen Ansatz 4 aufweist mit klei  nerem Durchmesser als im übrigen Teil der  Höhlung. In der letzteren ist ein kolben  artiges Druckstück<B>5</B> geführt mit einem Dorn  <B>6,</B> über den eine     zylindriselie        Schraubenfeder     <B>7</B> festgezogen ist. Das andere Ende der Feder  ist im engeren Teil der Höhlung<B>3</B> fest  geklemmt.



  Spring-loaded clamping screw for electrical power connections. For the connection of electrical conductors made of a metal, in which the conductor shows flexibility under pressure, various types of screw terminals and clamping screws have been developed. Some simple solutions consisted of accommodating a cylindrical coil spring in a cavity in the helical shaft.

   The spring rests on a compression piece protruding from the screw base and is pressed together when the clamping screw is tightened, so that sufficient contact is always ensured even if the conductor cross-section is outwardly or converged. If the screw is not in use, the screw and spring should be captive in the screw.

   For this purpose, a conical spring was used, the wider end of which is clamped in the screw shaft, while the narrower end of the spring has a structurally simple clamping hood which, however, is more expensive to manufacture than a screw with a cylindrical screw spring due to the conical spring. According to the invention, in order to be able to retain the manufacturing advantage of the cylindrically shaped helical spring, its fastening in the screw shaft is effected by

       that the cavity towards the screw head is narrower than in the rest of the part and the spring holds fast there. The pressure piece is guided in the cavity and is firmly attached to the loose spring end with a conical pin.



  The accompanying drawing shows, in section and greatly enlarged, an embodiment of a screw according to the invention. 1 is the screw head and 2, the screw shaft with a cavity 3, is the one against the screw head Approach 4 has a smaller diameter than the rest of the cavity. In the latter, a piston-like pressure piece <B> 5 </B> is guided with a mandrel <B> 6 </B> over which a cylindrical helical spring <B> 7 </B> is tightened. The other end of the spring is firmly clamped in the narrower part of the cavity <B> 3 </B>.

Claims (1)

PATENTANSPRUCH: Gefederte Klemmschraube für elektrische Stromanschlüsse, mit einer Höhlung zur Auf nahme einer zylindrischen Schraubenfeder und eines Druchstückes, dadurch gek-ennzeieh- net, dass die Höhlung im Schraubenschaft gegen den Sehraubenkopf hin enger ist iAs in ihrem übrigen Teil zwecks Festklemmen der Sehraubenfeder, deren loses Ende über einen konisch gestalteten Dorn des in der llöhlung geführten Druckstückes festgezogen ist. PATENT CLAIM: Spring-loaded clamping screw for electrical power connections, with a cavity for receiving a cylindrical helical spring and a pressure piece, characterized in that the cavity in the screw shaft is narrower towards the screw head, generally speaking in its remaining part for the purpose of clamping the visual spring loose end is tightened over a conical mandrel of the pressure piece guided in the oil hole.
CH238042D 1943-12-18 1943-12-18 Spring-loaded clamping screw for electrical power connections. CH238042A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH238042T 1943-12-18

Publications (1)

Publication Number Publication Date
CH238042A true CH238042A (en) 1945-06-15

Family

ID=4460355

Family Applications (1)

Application Number Title Priority Date Filing Date
CH238042D CH238042A (en) 1943-12-18 1943-12-18 Spring-loaded clamping screw for electrical power connections.

Country Status (1)

Country Link
CH (1) CH238042A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0335438A2 (en) * 1988-03-31 1989-10-04 HELMAN ELETTRONICA S.p.A. Connector for coaxial cables

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0335438A2 (en) * 1988-03-31 1989-10-04 HELMAN ELETTRONICA S.p.A. Connector for coaxial cables
EP0335438A3 (en) * 1988-03-31 1989-11-08 Helman Elettronica S.P.A. Connector for coaxial cables

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