US3133775A - Multiple contact assembly - Google Patents

Multiple contact assembly Download PDF

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Publication number
US3133775A
US3133775A US199768A US19976862A US3133775A US 3133775 A US3133775 A US 3133775A US 199768 A US199768 A US 199768A US 19976862 A US19976862 A US 19976862A US 3133775 A US3133775 A US 3133775A
Authority
US
United States
Prior art keywords
panel
frame
members
contact
board members
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
US199768A
Other languages
English (en)
Inventor
Plaxa Michael
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 BE633052D priority Critical patent/BE633052A/xx
Priority to NL293084D priority patent/NL293084A/xx
Application filed by AMP Inc filed Critical AMP Inc
Priority to US199768A priority patent/US3133775A/en
Priority to JP2918763A priority patent/JPS402578B1/ja
Priority to DEA43056A priority patent/DE1240154B/de
Priority to GB19105/63A priority patent/GB965641A/en
Priority to CH690063A priority patent/CH402999A/fr
Application granted granted Critical
Publication of US3133775A publication Critical patent/US3133775A/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
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • 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
    • H01R13/46—Bases; Cases
    • H01R13/516—Means for holding or embracing insulating body, e.g. casing, hoods
    • H01R13/518—Means for holding or embracing insulating body, e.g. casing, hoods for holding or embracing several coupling parts, e.g. frames

Definitions

  • plugboards or patchboards There has been developed a multiple contact connecting or switching device for simultaneously interconnecting electrical circuit paths between the numerous components of computers or other electronic oflice equipment. Examples of such devices are shown in the US. Patents No. 2,927,295 to Gilbert C. Weg and No. 2,594,737 to J. M. Cunningham and are generically termed plugboards or patchboards.
  • the usual construction employed in plugboards includes a fixed panel member having an array of contact spring members disposed therein and a movable panel member having a similar array of contact pins disposed therein; the panels being held by mounting and closing means capable of driving the movable panel toward and parallel to the fixed panel to effect an interconnecting of the arrays of contacts of each panel.
  • the contact spring and pin assemblies are each driven and held under contact pressures of eight to ten ounces.
  • the panels are exposed to stresses which may be unevenly distributed dependent upon the pattern of pins inserted in the movable panel. These stresses are accentuated by extremes of temperature and humidity and by vibration or shock loads imparted to the assembly with the result that the panel members may twist or Warp. In such instances, the resulting misalignment of the contact members frequently causes a partial or total failure of interconnection between contact paths.
  • the prior art has utilized a relatively heavy construction comprised of thick phenolic or diallyl phthalate panel members reenforced by heavy gauge aluminum or stainless steel frames interiorly channeled to accomomdate the edges of the insulating panel members.
  • a relatively heavy construction comprised of thick phenolic or diallyl phthalate panel members reenforced by heavy gauge aluminum or stainless steel frames interiorly channeled to accomomdate the edges of the insulating panel members.
  • multiple contact assemblies of the prior art are not only very heavy but also quite expensive; the largest single part of the cost being due to the necessity of machining the interior channel within the aluminum or steel frame members.
  • care must be taken with the conductors positioned about the periphery of the panel members in order to avoid accidental grounding against the metal frame members.
  • the assembly sensitivity to vibration or shock loads has restricted the field of application of plugboards; particularly, with respect to aircraft or other vehicular use.
  • the present invention features an improved version of the plugboard assembly including as one object the provision of a multiple contact assembly of a light weight yet rigid and sturdy construction.
  • Another object of the invention is to provide a multiple contact assembly having a novel insulating and shock resistant frame.
  • a further object of invention is to provide a contact carrying panel frame construction of inexpensive components.
  • FIGURE 1 is a perspective of a plugboard assembly including the movable panel of the invention
  • FIGURE 2 is a plan view of the movable panel of the invention showing the components thereof in greater detail;
  • FIGURE 3 is an enlarged cross section of the panel of the invention as viewed from lines 33 of FIGURE 2;
  • FIGURE 4 is an enlarged cross section of a portion of the panel of the invention as viewed from lines 44 of FIGURE 2.
  • FIGURE 1 there is shown a plugboard assembly including a fixed panel 60 having an array of spring contacts 62 disposed and secured therein; the panel 64) being mounted in a frame member 64 channeled to receive and support a movable panel 20.
  • the frame 64 additionally includes along the bottom interior a camming device comprised of a cam 66 operable by means of levers 68.
  • the movable panel 20 is inserted via pivot points having vertical motion relief not shown but in the vicinity of numeral and then swung into position on such pivot directly over the camming surface 66.
  • the panel 20 would normally include pin members such as the member 23 shown in FIGURE 3 inserted in the panel apertures 24.
  • the panel 20 Upon being swung into an operable position, the panel 20 is thereafter cammed by rotation of handle 68 to the vertical position; the contact members of panel 20 being driven thereby to individually engage the spring members 62 of the fixed panel. In this the operative position, panel 20 must sustain and transmit the cumulative forces of ten to several thousand pin contacts distributed in different patterns in apertures 24. As will be appreciated, the travel spacing between the pin assemblies of panel 20 and the spring contacts of panel 60 is very slight and relaxation caused by warping, twisting or undue com pression of the movable panel 20 will result in a failure of contact. As a further consideration, the contact pressure between the point of contact with the lower portion of the panel 20 and the cam 66 is quite considerable posing the double problem of panel fracture and relaxation due to compression.
  • the plastic frame 26 serves to insulate and isolate board members 22 from any metal-to-metal contact with the fixed frame 64 and, more importantly, to secure the members 22 against possible misalignment due to the forces imparted by the panel contact pin members.
  • the metal frame serves to reenforce the intermediate plastic frame against bending moments and, additionally, serves to receive and evenly distribute the high force per square inch transmitted by the camming member.
  • the metal members serve to receive the projections at either end of the panel which respectively operate to pivot and lock the panel within the fixed frame 64- and to accommodate the screws securing the handles 34 to the movable panel.
  • the preferred construction includes five framing components 32, 40, 42, 44 and 46 of a relatively hard insulating material positioned and held along the edges of the four panel members 22.
  • the peripheral members are suitably reenforced by steel members comprised of fiat bar stock disposed within a channel in the peripheral components; the member 32 being reenforced by a steel rod fitted therein.
  • the outer component members, such as 40 are secured at their ends by means of screws such as 49 threaded through one bar member into an abutting bar member; the screws 49 additionally serving the purpose of supporting and locking the panel member 20 as described with respect to FIGURE 1.
  • the peripheral members 40, 42, 44 and 46 include an intermediate plastic frame member held in frictional engagement with the panels 22 and the bar members, and should be of a length to provide a clearance such as 53 between each two frame members. In this manner, the individual stresses caused by expansion and contraction of the panel members will not be transmitted each to the other in the longitudinal sense.
  • the intermediate plastic frame 41 has a configuration which is structurally equivalent to the well known I-beam.
  • the member 41 is particularly capable of resisting bending moments applied in either of the directions which would tend to twist or warp the panel 20.
  • the member 41 includes an upper channel of a depth D suificient to form a bearing area with the bar member 56 and capable of holding the bar member and the intermediate member from relative transverse movement.
  • the sidewalls 52 formed by the upper channel of member 41 serve to insulate the peripherally disposed contact conductors from accidental grounding with the bar 56.
  • the leakage path from conductor 25 to the bar member 56 is extended to include at least the length of a transverse path along the outside surface of member 41.
  • the member 41 further includes an inner channel 54 having a depth D sufficient to hold the panel member 22 against transverse movement relative to the frame assembly. For this reason the channel 54 must be carried with a tolerance sufficient to provide a relatively tight-fit between the member 41 and the panel member 22 and the depth D must be sufiicient to provide a bearing area with the panel 22 in the presence of temperature variations and resulting contractions of panel 22. It has been found useful to bevel the outer edges of each intermediate frame member to prevent undesirable chipping or cracking of the frame during use.
  • the center component 32 is comprised of plastic frame members 48 and 50 similar in shape to the peripherally disposed intermediate frame members and adapted to receive panels 22 on one side and shaft 51 on the other side.
  • Shaft 51 extends longitudinally through the center of the member 32 and transversely through the frame component members 46 and 44 wherein it is locked by means of a threaded nut on each end, such as 36 as shown in FIGURE 1.
  • the provision of the shaft 51 has been found desirable in the larger sizes of movable panel members in order to avoid bowing of the peripheral frame members.
  • plastic channel members must have particular material characteristics including high dielectric strength, resist ance to dimensional changes responsive to temperature and humidity variations and most importantly, the capabi'ity to withstand constantly applied forces without compression. For this reason the use of natural and synthetic rubber or the usual thermoplastic material such as nylon or Teflon will not suffice.
  • a suitable plastic has been found to have characteristics approximately the following:
  • Moisture absorption per 24 hours 1% Dielectric strength 400 volts per mil. Impact strength (Izod test) 0.5 pounds. Flexural strength 10,000 p.s.i. Tensile strength 6,500 p.s.i. Compressional strength 27,000 p.s.i. Rockwell Hardness test M 110.
  • a preferred plastic is a rag-flock filled phenolic resin.
  • the plastic and metal members may be measured and cut from stock lengths based upon the dimensions of the particular panels employed.
  • the transverse members 48 and 50 would normally be placed on first followed by insertion of rod 51 and members 40, 42, 44 and 46. Thereafter, screws 49 and nuts 36 may be secured and, if desired, handles such as 34 may be added.
  • FIGURE 1 While the contact assembly shown in FIGURE 1 includes four panel members it is to be understood that one, two or larger numbers of panels can be accommodated employing the frame of the invention. It is further contemplated that other electrical connecting devices having relatively high compressional loads may be improved by use of the invention.
  • a plugboard device of the type having a first panel including a matrix of symmetrically spaced apertures having arrays of contact springs extending from one surface of the first panel and a second panel including a complementary matrix of symmetrically spaced apertures having arrays of contact pins extending from one surface of the second panel adapted to engage the said springs
  • the second panel having a construction including board members of thermosetting plastic material carried and secured by a first frame substantially surrounding and contacting said board members and a second frame surrounding and contacting said first frame and spaced from said board members, the said first frame including top, bottom and side portions channeled on one side to receive edges of said board members and on the opposite side to receive said second frame, the said first frame being comprised of thermosetting plastic material which is relatively hard and compression resistant, the said second frame being comprised of metal members secured at the ends thereof to form a structurally integral assembly whereby said boards and contact pins are held in said second panel to engage said contact springs under substantial pressure without relative movement between the board members or frames of said second panel.
  • said second panel includes a further member of thermosetting material disposed between board members and centered between said top and bottom portions, the said further member including portions channeled on one side to receive said board members and on the opposite side channeled to receive a metal member secured to the second frame to lock said first frame side portions against said board members.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Patch Boards (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
US199768A 1962-06-04 1962-06-04 Multiple contact assembly Expired - Lifetime US3133775A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
BE633052D BE633052A (nl) 1962-06-04
NL293084D NL293084A (nl) 1962-06-04
US199768A US3133775A (en) 1962-06-04 1962-06-04 Multiple contact assembly
JP2918763A JPS402578B1 (nl) 1962-06-04 1963-04-06
DEA43056A DE1240154B (de) 1962-06-04 1963-05-07 Programmierschalttafel, insbesondere fuer elektronische Rechenmaschinen
GB19105/63A GB965641A (en) 1962-06-04 1963-05-14 Improvements in or relating to multiple contact assemblies
CH690063A CH402999A (fr) 1962-06-04 1963-05-31 Panneau à organes de contact multiples pour un dispositif de connexion à deux panneaux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US199768A US3133775A (en) 1962-06-04 1962-06-04 Multiple contact assembly

Publications (1)

Publication Number Publication Date
US3133775A true US3133775A (en) 1964-05-19

Family

ID=22738943

Family Applications (1)

Application Number Title Priority Date Filing Date
US199768A Expired - Lifetime US3133775A (en) 1962-06-04 1962-06-04 Multiple contact assembly

Country Status (7)

Country Link
US (1) US3133775A (nl)
JP (1) JPS402578B1 (nl)
BE (1) BE633052A (nl)
CH (1) CH402999A (nl)
DE (1) DE1240154B (nl)
GB (1) GB965641A (nl)
NL (1) NL293084A (nl)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3200362A (en) * 1962-12-05 1965-08-10 Amp Inc Electrical contact panel assembly
US3303454A (en) * 1964-03-09 1967-02-07 Amp Inc Electrical connector frame construction
US6093042A (en) * 1998-12-10 2000-07-25 Berg Technology, Inc. High density connector with low insertion force
US6155860A (en) * 1998-01-31 2000-12-05 Berg Technology, Inc. Socket for electrical component
US6350141B1 (en) 2000-05-30 2002-02-26 Fci Americas Technology, Inc. Connector frame for a high density electrical connector
US6406316B1 (en) 1998-01-31 2002-06-18 Fci Americas Technology, Inc. Electrical connector with multiple housings

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2202783A (en) * 1937-01-04 1940-05-28 Jacque C Morrell Wall structure
US2257001A (en) * 1937-12-31 1941-09-23 American Cyanamid & Chem Corp Building unit and construction
US2594737A (en) * 1949-09-29 1952-04-29 Ibm Control panel for accounting machines
US2683980A (en) * 1945-12-21 1954-07-20 Owens Corning Fiberglass Corp Insulated building structure
US2753603A (en) * 1953-04-27 1956-07-10 Russell E Longnecker Plastic window frame
US2978758A (en) * 1960-03-28 1961-04-11 Harold S Dunn Water-beam canopy
US3012642A (en) * 1957-10-16 1961-12-12 Emmerich Michael Window and like frames

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE901188C (de) * 1940-12-17 1954-01-07 Elektrotechn Fabrik G M B H Aus Einheitsbauteilen zusammengesetzter Abzweig- oder Verteilerkasten
US2927295A (en) * 1954-02-23 1960-03-01 Aircraft Marine Prod Inc Plugboard assembly

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2202783A (en) * 1937-01-04 1940-05-28 Jacque C Morrell Wall structure
US2257001A (en) * 1937-12-31 1941-09-23 American Cyanamid & Chem Corp Building unit and construction
US2683980A (en) * 1945-12-21 1954-07-20 Owens Corning Fiberglass Corp Insulated building structure
US2594737A (en) * 1949-09-29 1952-04-29 Ibm Control panel for accounting machines
US2753603A (en) * 1953-04-27 1956-07-10 Russell E Longnecker Plastic window frame
US3012642A (en) * 1957-10-16 1961-12-12 Emmerich Michael Window and like frames
US2978758A (en) * 1960-03-28 1961-04-11 Harold S Dunn Water-beam canopy

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3200362A (en) * 1962-12-05 1965-08-10 Amp Inc Electrical contact panel assembly
US3303454A (en) * 1964-03-09 1967-02-07 Amp Inc Electrical connector frame construction
US3324443A (en) * 1964-03-09 1967-06-06 Amp Inc Plugboard device construction and method
US6155860A (en) * 1998-01-31 2000-12-05 Berg Technology, Inc. Socket for electrical component
US6406316B1 (en) 1998-01-31 2002-06-18 Fci Americas Technology, Inc. Electrical connector with multiple housings
US6482050B1 (en) 1998-01-31 2002-11-19 Fci Americas Technology, Inc. Contact for electrical component socket
US6093042A (en) * 1998-12-10 2000-07-25 Berg Technology, Inc. High density connector with low insertion force
US6350141B1 (en) 2000-05-30 2002-02-26 Fci Americas Technology, Inc. Connector frame for a high density electrical connector

Also Published As

Publication number Publication date
NL293084A (nl)
CH402999A (fr) 1965-11-30
JPS402578B1 (nl) 1965-02-10
DE1240154B (de) 1967-05-11
GB965641A (en) 1964-08-06
BE633052A (nl)

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