US3510830A - Electrical connectors - Google Patents

Electrical connectors Download PDF

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Publication number
US3510830A
US3510830A US776433A US3510830DA US3510830A US 3510830 A US3510830 A US 3510830A US 776433 A US776433 A US 776433A US 3510830D A US3510830D A US 3510830DA US 3510830 A US3510830 A US 3510830A
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US
United States
Prior art keywords
screws
connector
screw
insulating casing
connector body
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 - Lifetime
Application number
US776433A
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English (en)
Inventor
Friedrich Wieland
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3510830A publication Critical patent/US3510830A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting

Definitions

  • the invention relates to electrical connectors of the straight throng type comprising a metal connector body and clamping screws and, possibly additional fixing screws, located in an insulating casing.
  • Such connectors must satisfy several requirements. All the clamping screws must be reliably locked to prevent them from working loose when the connector is subject to vibration. Moreover, the metal connector body must not drop out of the shell-like insulating casing which is open on one side, even when the connector is fitted, as may often be necessary in installational work, with the open side downwards.
  • An object of the present invention is therefore the provision of an electrical connector of the straight through type in which the screws are reliably secured in a manner preventing them from working loose and the connector body is located in the insulating casing so that it cannot drop out. Moreover, an object of the invention is to achieve this result without associating additional components with the screws.
  • an electrical connector of the straight through type comprising an insulating casing open at one side, a metal connector body located in the insulating casing, and clamping screws which screw into the connector body, the insulating casing being of an elastic synthetic plastics material and being formed with web means having holes through which the screws pass, the holes having a diameter which is smaller than the major diameter of the screw threads.
  • the screws cannot work loose, since the web means through which they pass and which are integrally formed with the casing also consist of the elastic plastics material and therefore grip the screws in a manner preventing rotation. With this arrangement the screws which are thus located also hold the metal connector body in its position of use.
  • the connector in accordance with this invention has the advantage that the insulating casing is used to perform the function of securing the screws and of locating the connector body besides fulfilling its primary function of insulating the connector.
  • FIG. 1 is a front view of a connector embodying this invention
  • FIGS. 2 and 3 are respectively a side view and a plan view of the connector shown in FIG. 1;
  • FIG. 4 is a front view, partly in section, of an insulating casing a of the connector shown in FIG. 1;
  • FIG. 5 is a plan view of the insulating casing a
  • FIGS. 6 and 7 are sectional views at right angles to each other of a connector body b of the connector shown in FIG. 1;
  • FIG. 8 is a side view of a clamping screw d
  • FIGS. 9 and 10 are respectively side and plan views of a safety clip i;
  • FIG. 11 is a front view of another connector embodying this invention.
  • FIGS. 12 and 13 are respectively a side view and a plan view of the connector shown in FIG. 10;
  • FIGS. 14 and 15 are respectively a front view (partly in section) and a plan view of an insulating casing b of the connector shown in FIG. 10;
  • FIGS. 16 and 17 are sectional views at right angles to each other of a metal connector body b of the connector shown in FIG. 10;
  • FIG. 18 is a side view of the clamping screw :1;
  • FIGS. 19 and 20 are respectively a side view and a plan view of the safety clip i;
  • FIG. 21 is a side view of a clamping screw m.
  • FIGS. 22 and 23 are respectively a cross section and a plan view of a connecting strip n.
  • the connector shown in FIGS. 1 to 10 has an insulating casing a which is of an elastic synthetic plastics material and in which a metal connector body b is located.
  • the connector body b is provided with two tapped holes c which receive the two clamping screws d.
  • the insulating casing has the shape of a shell, i.e. one side thereof is open.
  • the connector body b has a central recess e which receives a web f formed in the insulating casing a.
  • Webs g are integrally formed with the insulating cas ing a and are provided with holes h through which the clamping screws pass and which have a diameter slightly less than the major diameter of the screw threads. These webs g therefore grip the screws d and prevent them from accidentally working loose.
  • Means can be provided to ensure that the screws d cannot be accidentally screwed completely out of the holes h in the webs g.
  • safety clips i may be provided, each safety clip 1 being recessed at k so as to fit into a peripheral groove l in an individual screw d when that screw d has been screwed into the body b of the connector.
  • the clamping screws d shown in the embodiment shown in FIGS. 1 to 10 are similar in the embodiment shown in FIGS. 11 to 20.
  • the metal connector body 12 contains an additional centrally disposed clamping screw m which locates a metal connector strip n for'making connections to neighbouring connectors.
  • the screw m passes through a web which is integral with the insulating casing a and which contains a bore p the diameter of which slightly less than the major diameter of the thread of the screw m.
  • Marginal indentations r are provided in the casing a to facilitate fracture of the casing a to provide the recess q.
  • the clamping screw m may also be used to locate a cross connecting bridge, an instrument tapping or the like instead of the illustrated connecting strip.
  • An electrical connector of the straight through type comprising an insulating casing open at one side, a metal connector body located in the insulating casing,
  • the insulating casing being of an elastic synthetic plastics material and being formed with web means having holes through which the screws pass, the holes having a diameter which is smaller than the major diameter of the screw threads.
  • An electrical connector as claimed in claim 1 which also comprises at least one fixing screw which passes through one of said holes and screws into the connector body.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Multi-Conductor Connections (AREA)
US776433A 1968-03-09 1968-11-18 Electrical connectors Expired - Lifetime US3510830A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW0045839 1968-03-09

Publications (1)

Publication Number Publication Date
US3510830A true US3510830A (en) 1970-05-05

Family

ID=7604656

Family Applications (1)

Application Number Title Priority Date Filing Date
US776433A Expired - Lifetime US3510830A (en) 1968-03-09 1968-11-18 Electrical connectors

Country Status (5)

Country Link
US (1) US3510830A (it)
CH (1) CH473489A (it)
FR (1) FR1572097A (it)
GB (1) GB1173879A (it)
NL (1) NL6812127A (it)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4040711A (en) * 1976-04-15 1977-08-09 Amerace Corporation Tubular electrical connector
US4067529A (en) * 1975-07-17 1978-01-10 Arrow-Hart (Europe) Limited Base member for electrical components
US4088829A (en) * 1976-07-15 1978-05-09 Arrow-Hart (Europe) Limited Housing for electrical components
US4234239A (en) * 1978-04-17 1980-11-18 C. A. Weidmuller Kg Earthing terminal
US4637676A (en) * 1985-05-13 1987-01-20 Allen-Bradley Company Terminal block marking surface
DE19528087A1 (de) * 1995-03-10 1996-09-12 Acme Electric Corp Anschlußblock
US5703558A (en) * 1995-03-10 1997-12-30 Acme Electric Corporation Combined terminal block mount and lamination stack keeper
US20070145581A1 (en) * 2005-12-27 2007-06-28 Kokusan Denki Co., Ltd. Control unit

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE793883A (fr) * 1972-01-21 1973-07-11 Alsthom Cgee Boites a bornes contenant une carte de circuits imprimes
FR2513007A1 (fr) * 1981-09-15 1983-03-18 Telemecanique Electrique Appareil electrique, en particulier un relais ou petit contacteur
FR2585516B1 (fr) * 1985-07-25 1988-03-18 Legrand Sa Bloc de jonction a raccordement lateral

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2292195A (en) * 1940-07-03 1942-08-04 Continental Screw Company Fastener
DE765594C (de) * 1939-07-12 1952-10-06 Aeg Reihenklemme
DE1071808B (it) * 1959-12-24
US3260989A (en) * 1964-08-27 1966-07-12 Curtis Dev & Mfg Co Captivated screw

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1071808B (it) * 1959-12-24
DE765594C (de) * 1939-07-12 1952-10-06 Aeg Reihenklemme
US2292195A (en) * 1940-07-03 1942-08-04 Continental Screw Company Fastener
US3260989A (en) * 1964-08-27 1966-07-12 Curtis Dev & Mfg Co Captivated screw

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4067529A (en) * 1975-07-17 1978-01-10 Arrow-Hart (Europe) Limited Base member for electrical components
US4040711A (en) * 1976-04-15 1977-08-09 Amerace Corporation Tubular electrical connector
US4088829A (en) * 1976-07-15 1978-05-09 Arrow-Hart (Europe) Limited Housing for electrical components
US4234239A (en) * 1978-04-17 1980-11-18 C. A. Weidmuller Kg Earthing terminal
US4637676A (en) * 1985-05-13 1987-01-20 Allen-Bradley Company Terminal block marking surface
DE19528087A1 (de) * 1995-03-10 1996-09-12 Acme Electric Corp Anschlußblock
US5588880A (en) * 1995-03-10 1996-12-31 Acme Electric Corporation Terminal block
US5703558A (en) * 1995-03-10 1997-12-30 Acme Electric Corporation Combined terminal block mount and lamination stack keeper
DE19528087C2 (de) * 1995-03-10 2000-06-08 Acme Electric Corp Anschlußblock
US20070145581A1 (en) * 2005-12-27 2007-06-28 Kokusan Denki Co., Ltd. Control unit

Also Published As

Publication number Publication date
CH473489A (de) 1969-05-31
GB1173879A (en) 1969-12-10
NL6812127A (it) 1969-09-11
FR1572097A (it) 1969-06-20

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