US3008118A - Plug contactor - Google Patents

Plug contactor Download PDF

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Publication number
US3008118A
US3008118A US801944A US80194459A US3008118A US 3008118 A US3008118 A US 3008118A US 801944 A US801944 A US 801944A US 80194459 A US80194459 A US 80194459A US 3008118 A US3008118 A US 3008118A
Authority
US
United States
Prior art keywords
plug
sleeve
spring
plugboard
detent
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
US801944A
Other languages
English (en)
Inventor
William H Mavity
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.)
TE Connectivity Corp
Original Assignee
AMP Inc
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
Priority to NL245044D priority Critical patent/NL245044A/xx
Priority to NL121715D priority patent/NL121715C/xx
Application filed by AMP Inc filed Critical AMP Inc
Priority to US801944A priority patent/US3008118A/en
Priority to GB34300/59A priority patent/GB931354A/en
Priority to DEA14078U priority patent/DE1825170U/de
Priority to DEA33066A priority patent/DE1165119B/de
Priority to FR809539A priority patent/FR1240827A/fr
Priority to CH8101759A priority patent/CH376552A/de
Application granted granted Critical
Publication of US3008118A publication Critical patent/US3008118A/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
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
    • 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
    • H01R13/20—Pins, blades, or sockets shaped, or provided with separate member, to retain co-operating parts together

Definitions

  • This invention relates to plug contactors for use with the plugboard or circuit connecting panel of an electrical calculating or accounting machine or the like, and more particularly to a spring detent system securing the plug from being pushed from the plugboard by ordinary pressures on the nose of the plug, but permitting withdrawal from the plugboard by a pull on the rear portions of the plug.
  • the detent systems of the prior plugs of the type described are of complex design, generally including multiple parts which are expensive in manufacture and to incorporate in assembly in the plug body. It is among the objects of the present invention to provide a spring detent system for such a plug embodied in a single piece of inexpensive material and simple design, which piece may easily and quickly be assembled in a plug body. Another object of the invention is the provision of a plug of the type described which is simple and economical in construction while being rugged in use and foolproof in operation.
  • FIGURE 1 is a longitudinal section view of an embodiment of a plug contactor incorporating features of the present invention, the plug being fully inserted in a plugboard;
  • FIGURE 2 is a fragmentary longitudinal section view of the plug of FIGURE 1 illustrating the action of the spring detent system during insertion of the plug in a plugboard aperture;
  • FIGURE 3 is a View similar to FIGURE 2 in a further stage during insertion of the plug;
  • FIGURE 4 is an enlarged sectional view taken along line 4-4 of FIGURE 1;
  • FIGURE 5 is an enlarged sectional view taken along line 5-5 of FIGURE 1;
  • FIGURE 6 is a view similar to FIGURE 1 illustrating a modied form of a plug contactor.
  • plug contactor to which this invention relates is especially adapted for use in the plugboard Wiring system of an electrical accounting or calculating machine or the like, which system typically includes a xed plug board carrying a set of permanent contacts arranged in rows and columns.
  • a movable plugboard removably carrying a corresponding set of plug contactors is arranged 'to bring the sets of Contact elements into engagement so as to complete the electrical circuits desired.
  • a plurality of apertures 2 of plugboard 4 receives a set of plug contactors, such as the plug generally designated at 6, in an array each for interengaging at its projecting nose 8 3,008,118 Patented Nov. 7, 1961 a corresponding contact in the contact set of the fixed plugboard, not shown.
  • Plug 6 comprises a hollow cylindrical sleeve or shell 10 of a conductive metal, such as tin-plated brass, preferably rolled up from flat sheet stock into tubular form with a butt seam 12 extending longitudinally of the sleeve, FIGURE 4.
  • a conductive metal such as tin-plated brass
  • sleeve 10 is provided with integral means 14 by which the conductor 16 is mechanically and electrically attached to the plug.
  • attaching means 14 is formed into a ferrule from an initially U-shaped cross-section configuration, the ferrule being tightly crimped around wire core 18 of the conductor, FIGURE 5, by cold forging techniques conventional in the art as illustrated, for example, in Patent No.
  • the anvil die utilized in forming the crimp may have a central rib to form a longitudinally extending indentation 19 inthe bottom of the crimp.
  • An insulating sheath 20 of a suitable resin such as polyvinyl chloride preferably is molded around the rear end of the plug and adjacent portions of the insulation of conductor 16. Sheath 20 insulates the ferrule or attaching means 14 and supports the adjacent portion of conductor 16 to increase its resistance to bending fatigue While conveniently serving as a handle for manipulating the plug.
  • an integral circumferential bead 22 is provided, the bead being disposed so as to engage the face of plugboard 4 adjacent edge portions of an aperture 2 to act as a stop for limiting movement of the plug into the plug board.
  • nose 8 smoothly converges to present a rounded tip except for a small opening 24 at the very tip in alignment with the longitudinal axis of the plug for purposes to be explained.
  • spring 26 Disposed within sleeve 10 yto provide the spring detent system of the plug is a spring 26 which is arranged to render the plug capable of being relatively easily inserted and withdrawn by sheath 20 or conductor 1
  • spring 26 may be formed of any spring material of any suitable cross-sectional configuration which is resistant to crumpling on axial loading, for example, steel piano wire.
  • the forward portion of spring 26 is generally V-shaped, the bight 28 extending into opening 24 and presenting a smoothly rounded tip from which the legs 30 and 31 of the V extend for ia short distance in closely spaced relation axially of the plug and then diverge to merge smoothly into the forward legs 32 of V-shaped ear or detent portions 34 and 35 respectively.
  • a pair of diametrically spaced longitudinal slots 36 and 37 in the forward portion of sleeve 10, and spaced from bead 22 a distance slightly greater than the plugboard thickness, provide openings through which detente 34 and 35 project for engaging behind the aperture edges on the front face ⁇ as bead 22 comes into abutment with the rear face of the plugboard.
  • the rear legs 38 and 39 of detents 34 and 35 extend laterally of the longitudinal axis of the plug for substantially parallel disposition relative to the plugboard face on insertion of the plug.
  • the ends of legs 38 and 39 lead into short -segments 40 and 41 which run parallel to the plug axis ⁇ and adjacent the inside wall of sleeve 10 to dethereof with wire core 1S in ferrule means 14, FIGURES 1 and 5, so as to tix the longitudinal position of knees 44'and 45 adjacent the opposite wall of sleeve 10 from detents 34'and 35 respectively.
  • spring 26 is inserted through the rear of sleeve until detents 34 and 35 protrude through slots 36 and 37 as bight 28 enters opening 24, legs 30V and l31 being formed with an initial bias tending to open spring 26 slightly more than the diameter of sleeve 10 to assure protrusion of detents 34 and 35.
  • the ends ott legs 46 and 47 are then laid along ferrule means 14, upon which wire core 18 may be crimped therein before the molding of sheath 20 as desired.
  • each side of spring 26 rom'knees 44 and 45 to bight 28 in action is similar to that ⁇ of a bow spring, one end of which is anchored or xed in position and the other end being free to slide along ⁇ the plug axis in a defined path of travel which approximates the cord line of the bow that is, the line including the ends Vof the bow.
  • Det-ents 34 and 35 are positioned at the point of greatest departure of the bow springs from their respective cord lines.
  • lateral leg 38 assumes an inclined aspect to the forward edge of aperture 2 producing a camming-in force component in addition tothe fcamming'inlluence had by rearward movement of the -forward edge of slot 36 relative to the sloping forward leg-32,' thusto ldepress detent 34 fully and allowing Withdrawal ofthe plug.
  • theforce required to insent'the plug may be varied; andthat the force required to withdraw ⁇ theV plug relative tothe insertion yforce may be varied as desired by changing the length of diagonal portions. 42 and 43, or -by inclining leg portions 38 land 39 more or less from perpendicular relation relative to the plug l2x18'.
  • any force applied to the plug nose has a major component at the free end of the bow, or bight 28, which acts in a direction along the cord line of the bow. Since the distal end of the bow is iixed, the only result can be a tendency to increase the curvature or buckle the bow furtherl outwardly, which is in a direction to sustain detents 34 and 35 in latching position.
  • bight 28 need not protrude in the rest position of spring 26 from nose 8 as shown, but may be flush to thesame effect.
  • the edges of the plugboard aperture exert no inward camming component on the detents, as by arranging lateral legs 33and 39 to lie parallel to the plugboard face, or to have a slight reverse inclination, adequate strength of spring 26 assures destruction of the plug or the plugboard before the plug will unseat on pressure applied to the plug nose. Under' certain conditions of use, however, it may be desirable that the plug be released prior to its destruction, in which event lateral legs 3S and 39y may be slightly inclined to the plug axis as desired.
  • the characteristics and configuration of the spring detent system are generally the same as that of the embodiment of FIGURE 1, like parts being correspondingly numbered but with a letter suiix. It will be noted, however, that segments 40a and 41a extend as far as possible rearwardly in sleeve 10a along the same side of the plug as detents 34a and 35a respectively. Short diagonal segments 42a and 43a lead the ends of the spring into ferrule attaching means 14a.
  • each bow spring merely has been transferred to the forward end of ferrule means y14a and nearer the plug axis.
  • the spring is simpler to form and to insert. Further, it is essentially immaterial where segments 40a and 41'a are caused to lie in sleeve 10a upon crimping the spring ends and wire core 18a in ferrule means 14a.
  • a plug contactor comprising a sleeve having a rounded front portion and a ferrule-means at the back portion for attaching a conductor wire to the plug, an opening in said front portion substantially coaxial with the longitudinal axis of the plugand a slot'in the.
  • a plug ⁇ contaetor comprising a sleeve having a rounded nose, an opening in said nose substantially smaller in diameter than the sleeve and positioned coaxial with the longitudinal axis of the plug and a slot in the sidewall of said sleeve, and a wire detent spring disposed in said sleeve including a generally arcuate portion having one end extending into and slidahle in said opening, the other end of said arcuate portion being disposed against the internal sidewall of the sleeve at a point along a line diametrically located relative to said slot, a V-shaped detent intermediate the length of said arcuate portion and -biased to protrude through said slot, the rearward side of said detent relative to the plug nose extending substantially perpendicular to said axis, and a stop segment extending rearwardly in said sleeve integrally from said detent and engageable with the sidewall of said sleeve to ⁇ limit the protrusion
  • a plug contactor comprising a sleeve having a rounded nose, an opening in said nose substantially smaller in diameter than the sleeve and positioned coaxial with 2O the longitudinal axis of the plug, a pair of diametric slots in the sidewalls of said sleeve, and a wire detent spring disposed in said sleeve including a generally V-shaped forward portion with the apex of the V dening a bight extending into said opening, the legs of the V adjacent said bight being slidable in said opening, a pair of generally V-shaped detents integral with the respective legs of the V and biased to protrude through said slots, stop segments extending rearwardly in said sleeve integrally from said detents and engageable with the sidewalls of said sleeve adjacent said slots respectively to limit the protrusion of said detents, and leg segments extending rearwardly and diagonally in said sleeve integrally from said stop segments to engage the ⁇ sleeve

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
US801944A 1959-03-25 1959-03-25 Plug contactor Expired - Lifetime US3008118A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
NL245044D NL245044A (en(2012)) 1959-03-25
NL121715D NL121715C (en(2012)) 1959-03-25
US801944A US3008118A (en) 1959-03-25 1959-03-25 Plug contactor
GB34300/59A GB931354A (en) 1959-03-25 1959-10-09 Improvements in electrical plugs for insertion into plugboards
DEA14078U DE1825170U (de) 1959-03-25 1959-10-15 Elektrischer kupplungsstecker zum durchstecken durch das loch einer schalttafel.
DEA33066A DE1165119B (de) 1959-03-25 1959-10-15 Selbstsperrender Kupplungsstecker
FR809539A FR1240827A (fr) 1959-03-25 1959-11-06 Perfectionnements aux fiches destinées à être insérées dans des tableaux à fiches
CH8101759A CH376552A (de) 1959-03-25 1959-11-23 Elektrischer Stecker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US801944A US3008118A (en) 1959-03-25 1959-03-25 Plug contactor

Publications (1)

Publication Number Publication Date
US3008118A true US3008118A (en) 1961-11-07

Family

ID=25182416

Family Applications (1)

Application Number Title Priority Date Filing Date
US801944A Expired - Lifetime US3008118A (en) 1959-03-25 1959-03-25 Plug contactor

Country Status (6)

Country Link
US (1) US3008118A (en(2012))
CH (1) CH376552A (en(2012))
DE (2) DE1165119B (en(2012))
FR (1) FR1240827A (en(2012))
GB (1) GB931354A (en(2012))
NL (2) NL121715C (en(2012))

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3173740A (en) * 1963-11-12 1965-03-16 Auto Swage Products Inc Self-locking electrical plug connector
US3178676A (en) * 1962-09-28 1965-04-13 Burndy Corp Pin contact
US3206718A (en) * 1963-10-08 1965-09-14 Amp Inc Plug connector
US3252127A (en) * 1963-10-03 1966-05-17 United Carr Inc Plug contact
US3275973A (en) * 1963-11-04 1966-09-27 Amp Inc One piece plugboard plug connector
US3309648A (en) * 1964-07-13 1967-03-14 Amp Inc Plug contactor
US3320574A (en) * 1963-02-04 1967-05-16 Tuchel Ulrich Two-piece connector
US3333235A (en) * 1964-09-16 1967-07-25 Virginia Panel Corp Plug contactor
US3335397A (en) * 1964-11-19 1967-08-08 Amp Inc Plug wire contactor
US4437726A (en) 1982-06-14 1984-03-20 Omnetics, Inc. Flexible pin
US4797113A (en) * 1987-02-05 1989-01-10 Lambert Roger T Board to board flexible pin
WO1995034924A1 (de) * 1994-06-10 1995-12-21 Icec Ag Fassung für kompakt-leuchtstofflampen

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19618611C2 (de) * 1996-03-20 1999-02-04 Ingolf Jasch Selbstverstärkendes Steckverbindungselement
DE10211634B4 (de) * 2002-03-15 2005-08-04 Gessmann Gmbh & Co. Elektrische Steckverbindung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2624774A (en) * 1948-12-29 1953-01-06 Ibm Plugboard contactor
US2748367A (en) * 1952-02-28 1956-05-29 Belden Mfg Co Electrical connector
US2787771A (en) * 1953-12-01 1957-04-02 Gen Electric Jack plug for electronic calculator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2691146A (en) * 1951-03-01 1954-10-05 Aircraft Marine Prod Inc Snap latch plug
US2758290A (en) * 1953-05-19 1956-08-07 Aircraft Marine Prod Inc Plug connector
DE1699758U (de) * 1954-12-14 1955-06-02 Ibm Deutschland Selbstsperrender steckerstift.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2624774A (en) * 1948-12-29 1953-01-06 Ibm Plugboard contactor
US2748367A (en) * 1952-02-28 1956-05-29 Belden Mfg Co Electrical connector
US2787771A (en) * 1953-12-01 1957-04-02 Gen Electric Jack plug for electronic calculator

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3178676A (en) * 1962-09-28 1965-04-13 Burndy Corp Pin contact
US3320574A (en) * 1963-02-04 1967-05-16 Tuchel Ulrich Two-piece connector
US3252127A (en) * 1963-10-03 1966-05-17 United Carr Inc Plug contact
US3206718A (en) * 1963-10-08 1965-09-14 Amp Inc Plug connector
US3275973A (en) * 1963-11-04 1966-09-27 Amp Inc One piece plugboard plug connector
US3173740A (en) * 1963-11-12 1965-03-16 Auto Swage Products Inc Self-locking electrical plug connector
US3309648A (en) * 1964-07-13 1967-03-14 Amp Inc Plug contactor
US3333235A (en) * 1964-09-16 1967-07-25 Virginia Panel Corp Plug contactor
US3335397A (en) * 1964-11-19 1967-08-08 Amp Inc Plug wire contactor
US4437726A (en) 1982-06-14 1984-03-20 Omnetics, Inc. Flexible pin
US4797113A (en) * 1987-02-05 1989-01-10 Lambert Roger T Board to board flexible pin
WO1995034924A1 (de) * 1994-06-10 1995-12-21 Icec Ag Fassung für kompakt-leuchtstofflampen

Also Published As

Publication number Publication date
FR1240827A (fr) 1960-09-09
NL245044A (en(2012))
GB931354A (en) 1963-07-17
CH376552A (de) 1964-04-15
DE1825170U (de) 1961-01-19
NL121715C (en(2012))
DE1165119B (de) 1964-03-12

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