US2858521A - Socket connectors - Google Patents

Socket connectors Download PDF

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Publication number
US2858521A
US2858521A US405014A US40501454A US2858521A US 2858521 A US2858521 A US 2858521A US 405014 A US405014 A US 405014A US 40501454 A US40501454 A US 40501454A US 2858521 A US2858521 A US 2858521A
Authority
US
United States
Prior art keywords
pin
spring
post
connector
cylindrical
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
US405014A
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English (en)
Inventor
Young Sidney Geoffrey
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
Priority to US405014A priority Critical patent/US2858521A/en
Priority to NL190965A priority patent/NL95871C/xx
Priority to CH325627D priority patent/CH325627A/fr
Priority to FR1108495D priority patent/FR1108495A/fr
Application granted granted Critical
Publication of US2858521A publication Critical patent/US2858521A/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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/111—Resilient sockets co-operating with pins having a circular transverse section

Definitions

  • This invention relates to improvements in the construction of socket connectors of the type employed to grip a pin connector resiliently, in order to establish an electric circuit; and is more especially applicable to electric plug and socket unions having a plurality of pins, as in the conventional two and three pin electric power plugs.
  • Figure 1 shows a perspective view of said connector with a plug pin withdrawn from engagement therewith.
  • Figure 2 is the same as Figure 1 after the pin has been inserted in the connector
  • Figure 3 is a section taken along the line IIIIII in Figure 1 with the addition of a mounting for the connector;
  • Figure 4 is a view, showing atypical arrangement of three such connectors for the reception of a standard three pin plug
  • Figure 5 is a diagrammatic side view of the arrangement shown in Figure 4 with a plug inserted;
  • Figure 6 is an enlarged plan view of the connector shown in Figure 1 showing more details;
  • Figure 7 is'a view similar to Figure 6 demonstrating the effect of the insertion of a pin into the connector.
  • Figure 8 illustrates a modification
  • a terminal post 1 e. g. of brass, having a hole 2 extending therethrough either coaxially or parallel to the axis, into which hole a conductor (not shown) may be inserted and secured by means of a binding screw 3.
  • This terminal post 1 is embraced by a spring 4, e. g. of Phosphor bronze, which is so shaped as to provide a space 5 between itself and an inwardly curved surface 6 on the outer surface of the terminal post, into which space 5 a a pin '7 may be inserted as shown in Figure 2.
  • a spring 4 e. g. of Phosphor bronze, which is so shaped as to provide a space 5 between itself and an inwardly curved surface 6 on the outer surface of the terminal post, into which space 5 a a pin '7 may be inserted as shown in Figure 2.
  • Figure 4 shows a typical arrangement of three such connectors for receiving a standard three pin plug, one pin of which (the earth pin) is longer and of greater diameter than the other two pins (the line and neutral pins).
  • the connectors which re- .ceive the smaller pins are disposed side by side, so that any variation from the correct distance D apart of the pin centre-lines, that the pins of the plug may have, is absorbed by movement towards or away from each other of the two springs 4, these springs being freely rotatable about the posts 1 within the limits imposed by the screws 3 against which their ends will impinge.
  • the distance D that the centre-line of the larger pin should be from the line joining the centres of the smaller pins may also be varied within limits as a result of the freedom that the spring 4 of the larger connector has to rotate about its post 1'.
  • Figure 5 shows a side view of the arrangement shown in Figure 4 with a plug 13 in position.
  • the shorter pins 14 of this plug abut against the base 10 which forms part of a casing, while the longer pin 15 is accommodated in a hole extending through the base 10 adjacent the hole therein through which the extension piece, having a flange 12, of the larger connector extends.
  • the overall depth A of the socket assembly is substantially the same as the length of the longer pin 15, so that this depth has thus been reduced to the absolute minimum possible for any given plug.
  • the terminal post 1 is cylindrical in shape except for the flange 8 and the portion cut away to provide the pin contacting surface 6.
  • this surface 6 is not a true cylindrical surface described about the theoretical centre line of the pin. It consists preferably, for ease of manufacture and advantageous performance, of segments of two cylindrical surfaces described about two lines E and F each displaced a little to one side of the theoretical centre C.
  • such surface may, as an alternative, consist of a single segment of a cylindrical surface described about a line H displaced beyond the line C. Since the socket connectors will normally be designed to receive the pins of a plug the dimensions and tolerances of which are standardised in accordance with regulations from time to time in force, it will be a simple matter to arrange for the necessary amount of play.
  • the shape of the spring 4 is also carefully chosen to provide an efficient grip on the pin, and for this purpose it is advantageous to make the dimension K either slightly larger than the pin diameter or such as only to grip the pin lightly at the sides and to make the dimension L somewhat smaller than the diameter of-the pin. T he effect of this arrangement will be seen from Figure 7, wherein a pin 14 is shown inserted, its centre line coinciding with the line E. The spring 4 has beenexpanded radially outwardly with respect to the post 1 and its sides have moved in to grip the pin. In other words the dimension L has become greater than .L, whereas :K' has become less than K; K and L' being of .course equal to each other and corresponding to the diameter of the cylindrical pin 14.
  • FIG. 8 An alternative form of connector is shown diagrammatically in Figure 8.
  • the split in the spring is arranged adjacent the pin. Otherwise the same considerations and dimensions apply as above, aslot .or hole being provided in the spring 17 for passage .of the screw 3.
  • Such hole or slot is of sufiicient widthtopermit rotation of the spring around the post 1 within the limits required.
  • socket connector comprising a substantially cylindrical terminal post having an outer portion cut away to form a seating for a cylindrical pin, .the seating having play as described above, and a spring. embracing said post in close contact therewith and rotatable relatively thereto, said spring being shaped .to contact said pin preferably over a major portionof the peripheral surface thereof and to urge it against the terminal post when the pin is inserted therebetween.
  • the lead-in conductor be brought into a hole alongside the interface between t-the pin and the post.
  • the axes of the hole 2 and the screw 3 could for example be interchanged, or the extension piece 11 could be thickened and lengthened if necessary to accommodate a fixing screw, or could itself be provided with a screw-thread to cooperate with a corresponding thread of a further conductor.
  • the present invention enables a low rate spring (i. e. one in which a comparatively large deflection can be obtained by a comparatively small force) to be used in a small space, thus resulting in low mechanical stresses in conjunction with maximum contact pressure and surface area.
  • Assembly is extremely simple as the spring may be lightly sprung on to the post from the end thereof not provided with a flange, so that no likelihood of stressing the spring beyond its yield point will arise in manufacture.
  • An electric socket connector comprising a substantially cylindrical terminal post having on an outer portion thereof a depression forming an arcuate non-cylindrical seating for a cylindrical pin, the seating allowing play to such pin, and a spring embracing said post in close contact therewith while being rotatable aroundthe post, the spring being shaped to embrace .the pin and urge it against the seating when the pin is inserted therebetween.
  • an electric socket connector as claimed in claim 1 wherein the spring is in the form of a strap extending from the rear of the terminal post, around one curved side surface thereof to an outwardly bulging portion aligned with the seating, and finally around the other curved side surface to the rear of the terminal post.
  • An electric socket connector assembly comprising a plurality of connectors as claimed in claim 1 adapted and disposed to receive the pins of a standard multipin plug.
  • a socket assembly comprising a plurality of socket connectors each comprising a substantially cylindrical terminal post having an outer portion cut away to form an arcuate non-cylindrical seating for a cylindrical .pin of the plug, the seatings being such as to allow-the pins to take up any one of a number of positions between limits defined by the allowable tolerance of the distance between the centre lines of the pins, and each connector having a spring embracing the post in close contact therewith while being rotatable around the post, such springs being.
  • shaped tov embrace the respective pins closely and urge them against the seatings when the plug is in position engaging the socket assembly.
  • An electric socket connector comprising a terminal .post having on its outer periphery a part-cylindrical depression serving as a seating for a cylindrical plug pin, and a spring clip embracing said post, said clip having an expandable bulged portion adapted to embrace both circumferentially and longitudinally an inserted cylindrical pin and to urge the latter against the seating.
  • An electric socket connector comprising a terminal post having on its outer periphery an arcuate-shaped, rectilinearly-extendingdepression serving as a seating for a cylindrical pin, and a spring clip embracing said post While being capable of rotary movement about said post, said spring having an expandable bulged portion adapted to define with said seating a socket space departing from the true-cylindrical for receiving and partially circumferentially embracing the pin.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
US405014A 1954-01-19 1954-01-19 Socket connectors Expired - Lifetime US2858521A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US405014A US2858521A (en) 1954-01-19 1954-01-19 Socket connectors
NL190965A NL95871C (fr) 1954-01-19 1954-09-21
CH325627D CH325627A (fr) 1954-01-19 1954-09-21 Dispositif de raccordement électrique
FR1108495D FR1108495A (fr) 1954-01-19 1954-09-21 Connecteur électrique à douille

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US405014A US2858521A (en) 1954-01-19 1954-01-19 Socket connectors

Publications (1)

Publication Number Publication Date
US2858521A true US2858521A (en) 1958-10-28

Family

ID=23601941

Family Applications (1)

Application Number Title Priority Date Filing Date
US405014A Expired - Lifetime US2858521A (en) 1954-01-19 1954-01-19 Socket connectors

Country Status (4)

Country Link
US (1) US2858521A (fr)
CH (1) CH325627A (fr)
FR (1) FR1108495A (fr)
NL (1) NL95871C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180316111A1 (en) * 2015-05-21 2018-11-01 Amad Mennekes Holding Gmbh & Co. Kg Contact sleeve for plug-and-socket devices

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR501985A (fr) * 1919-07-26 1920-04-30 Emile Jean Alfred Pipon Monture porte-fil et porte-piston pour douilles de lampes électriques
US2174682A (en) * 1937-10-30 1939-10-03 Gen Electric Tube base and socket
US2221651A (en) * 1939-01-21 1940-11-12 E A Myers & Sons Pin socket
US2424966A (en) * 1942-02-09 1947-08-05 Hubbell Inc Harvey Electrical connector
US2762955A (en) * 1952-11-15 1956-09-11 Rca Corp Transistor electrode contacts

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR501985A (fr) * 1919-07-26 1920-04-30 Emile Jean Alfred Pipon Monture porte-fil et porte-piston pour douilles de lampes électriques
US2174682A (en) * 1937-10-30 1939-10-03 Gen Electric Tube base and socket
US2221651A (en) * 1939-01-21 1940-11-12 E A Myers & Sons Pin socket
US2424966A (en) * 1942-02-09 1947-08-05 Hubbell Inc Harvey Electrical connector
US2762955A (en) * 1952-11-15 1956-09-11 Rca Corp Transistor electrode contacts

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180316111A1 (en) * 2015-05-21 2018-11-01 Amad Mennekes Holding Gmbh & Co. Kg Contact sleeve for plug-and-socket devices
US10312619B2 (en) * 2015-05-21 2019-06-04 Amad Mennekes Holding Gmbh & Co. Kg Contact sleeve for plug-and-socket devices

Also Published As

Publication number Publication date
FR1108495A (fr) 1956-01-13
CH325627A (fr) 1957-11-15
NL95871C (fr) 1960-11-15

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