US3626361A - Connectors for insertable printed circuits - Google Patents

Connectors for insertable printed circuits Download PDF

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Publication number
US3626361A
US3626361A US8595A US3626361DA US3626361A US 3626361 A US3626361 A US 3626361A US 8595 A US8595 A US 8595A US 3626361D A US3626361D A US 3626361DA US 3626361 A US3626361 A US 3626361A
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US
United States
Prior art keywords
contact member
support
connector according
insulating support
contiguous
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
US8595A
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English (en)
Inventor
Francois Robert Bonhomme
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.)
Connectronics Corp
Original Assignee
Connectronics Corp
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 Connectronics Corp filed Critical Connectronics Corp
Application granted granted Critical
Publication of US3626361A publication Critical patent/US3626361A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/721—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures cooperating directly with the edge of the rigid printed circuits

Definitions

  • the connector comprises an insulating support housing an electrical contact member formed by a metallic strip having an intermediate portion whose opposite edges slide in grooves in the support.
  • the intermediate portion has a longitudinal tongue which clamps the contact member in one direction and is contiguous on one side with a wiring tab and on the other with a curved portion for contacting the printed circuit.
  • the housing has a boss for locking the contact member between tongues in the strip. The contact member can be introduced into the housing from either side.
  • the present invention relates to improvements in connectors for insertable printed circuits. More particularly the invention relates to connectors for insertable printed circuits of the type comprising an insulating support and at least one electrical contact member housed in the support and constituted by a metallic strip including an intennediate portion of which the opposite edges are guided by parallel grooves provided in the insulating support, and open at their two ends,
  • said intermediate portion being cut out so as to have a longitudinal tongue, cooperating with the insulating support to ensure positive clamping, in one direction, of the contact member,
  • said intermediate portion being, in addition, contiguous on one side with a tail for wiring and on the other with a curved portion adapted to ensure electrical contact with a conducting surface of a contact element such as a printed circuit card.
  • a connector for an insertable printed circuit of the type concerned is characterized by the fact that the intennediate portion of the said strip is curved so as to possess at rest a thickness greater than the height of said grooves, in order to hold the contact member in transverse direction with respect to the grooves, and that locking means of said strip in the support are provided and arranged to ensure positive clamping of said strip in a direction opposite to that previously defined and to enable the contact member to be introduced into the support and extracted from the latter equally either from the side where fixing of the printed circuit occurs, or from the opposite side.
  • the locking means comprise, on the side of the insulating support, a boss arranged in each electrical contact member housing.
  • the locking means comprise, on the side of the electrical contact member, a second longitudinal tongue out out in the curved part of the aforesaid metallic strip, the two tongues being situated in extension of one another and arranged head to tail and adapted to cooperate respectively with the two opposite transverse surfaces of said boss.
  • said locking means comprise, on the side of the contact member, an opening fashioned in the longitudinal tongue, said opening being adapted to receive said boss, two opposite transverse surfaces of this latter cooperating with two opposite edges of said opening.
  • the invention also relates to electrical contact members arranged to equip a connector defined above.
  • FIG. 1 shows in perspective, with portions removed, an electrical contact member constructed according to a first embodiment of the invention
  • FIG. 2 shows in elevation the embodiment of FIG. 1 introduced into an insulating support in section along the line Il-II of FIG. 3, the assembly of support and contact member constituting a connector according to the invention;
  • FIG. 3 comprises a partial view from the left and a partial section along the line IIl-III of FIG. 2 of the insulating support equipped with several electrical contact members;
  • FIG. 4 is a perspective view of an electrical contact member constructed in accordance with a second embodiment of the inyention
  • FIG. 5 is a partial view in perspective, with portions removed, showing the fastening of the tongue of the member of FIG. 4on the insulating-support; and I FIG. 6 finally, is a sectional view showing the contact member of FIG. 4 installed in an insulating support.
  • the electrical contact member 1 is constituted by a conducting metallic strip 2 having a slightly curved (downwardly in FIGS. '1 and 2) intermediate portion 3.
  • the edges of this intermediate portion 3 are intended to be guided by grooves 35 fashioned in an insu lating support 28 (FIG. 2).
  • the overall thickness 20 (FIG. I), at rest, of the portion 3 is greaterthan the height-4'1 (FIG. 2) of said grooves.
  • the portion 3 is contiguous, on one side, with a tail 4 for wiring and, on the other, with an elastic loop 5 adapted to ensure electrical contact with a conducting surface (not shown).
  • the intennediate portion 3 is cut out so as to present, on the one hand, at least one elastic longitudinal tongue 6 and, on the other hand, two abutment surfaces 56a, 56b intended to cooperate respectively with two holding surfaces provided on the support 28 ,to prevent the contact member from moving longitudinally.
  • the metallic strip 2 is relatively narrow and thin and coristituted, preferably, of an elastic metal which is a good'conductor of electricity such as phosphor-bronze or berylliumcopper.
  • the other end of the strip is curved and rolled, as shown in FIGS. I and 2, so as to form the loop, not closed, 5, elongated, of substantially elliptical longitudinal section, with large axis parallel to the middle lines of the tail 4 and of the portion 3.
  • the loop 5 has two highly curved zones 8 and 9, bounding the large axes of the longitudinal sections of the loop and connected by a zone 10 of slight curvature.
  • the zone 9 is extended by a zone 11, also of slight curvature, bounded by the terminal edge 12 of the strip.
  • the zone 11 bears against a surface 13 (FIG. 2) of the portion 3.
  • the loop -5 has great elasticity in a direction perpendicular to the plane of the strip, which direction is indicated in 'FIG. 2 by a double arrow A, for any flattening of the loop along this direction generates an opposing force due especially to cooperation of the zone 11 and the portion 3.
  • the zone 10 of the loop is intended to ensure electrical con: tact with a conducting surface (not shown).
  • This slot 14 divides the loop 5-in the longitudinal direction into two elemental loops l5 and 16 up to the vicinity of the edge '12 where the two elemental loops I5 and 16 reunite to constitute the end 17 of the loop 5. This common end prevents separation of the two loops l5 and 16 from one another.
  • the loop 5, like the tail 4 has a width less than that of the portion 3,- so that two discontinuities l8, symmetrical with respect to the middle line of the strip, are formed atthe junction of the loop 5 and of the portion 3.
  • This portion 3 is bent at its middle,-in the same sense as zone 10, around an axis 19 (FIG. I) perpendicular to the middle line of the tail 4, and has a wavy longitudinal profile while its transverse profile remains rectilinear.
  • This curvature increases the thickness at rest 20 of the portion 3, which thickness is equal to the distance separating the-straight lines 21 and '22, parallel to the middle line of the tail 4 and bearing respectively on the two surfaces of the portion 3 while being spaced-to the maximum from one another. By elastic deformation, this thickness may be reduced, which permits, as will be seen below, the sliding of the edges of this portion 3 in the grooves 35. 1
  • the strip has, at the level of its portion 3, two longitudinal tongues 6 and 23 arranged substantially along the arms of a circumflex accent which would cover the large dimension of the portion 3.
  • the tongue 6, of rectangular shape is obtained by cutting out a median zone of the portion 3 along three sides of a rectangle.
  • a fourth side 24 of the rectangle, not cut out, is located towards the discontinuities 8 and is perpendicular to the middle line of the tail 4.
  • the large side of the rectangle has a length less than the distance of the side 24 to the axis of curvature 19.
  • a transverse band 27 extends between the side 24 and the slot 14.
  • the second tongue 23 is symmetrical with the tongue 6, with respect to a plane passing through the axis 19 and perpendicular to the middle line of the tail 4, and comprises a side 25 not cut out.
  • the stop surfaces 56a, 56b are constituted respectively by the free transversal edges parallel to the sides 24, 25 of the tongues 6 and 23.
  • the openings left in the portion 3 by the tongues are separated by a transverse band of metal 26 enabling the portion 3 to preserve good rigidity.
  • the contact members 1 are intended to be mounted in the insulating support 28, generally of parallelopipedic shape and allowing a plane of symmetry perpendicular to the planes of FIGS. 2 and 3.
  • the lines of the plane of symmetry are recorded, on FIGS. 2 and 3, respectively by the reference numerals 29 and 30.
  • Housings 31, of substantially rectangular section, separated by partitions 32, are provided in the support and are generally arranged parallel to one another. These housings and these partitions form two symmetrical series with respect to the plane of the lines 29 and 30.
  • the two series of symmetrical partitions are separated by a distance I-[ (FIG. 2) slightly greater than the thickness of the element (not shown) bearing a conductive surface, which element is generally constituted by a printed circuit card and which has to be introduced into the space E comprised between these series of partitions.
  • a stop 33 to limit the introduction of this element, is advantageously provided on the support 28.
  • This latter bears holding or locking surfaces 37, 38, advantageously constituted by the surfaces of a boss 34 located inside each housing 31.
  • the boss 34 is arranged on the surface of the housing 31 parallel to the plane of line 29, substantially at half the length of the housing. Its section through the plane of FIG. 2 has the form of an isosceles trapezoid of which the small base 36, less than the width of the band 26, is parallel to the plane of symmetry of the support and turned towards this plane. This trapezium has a large base greater than the width of the band 26.
  • the boss 34 may advantageously comprise a median longitudinal slot 39 of rectangular section, opening onto the small base 36 and onto the faces 37, 38 of the boss.
  • the grooves 35 extend over the surfaces of the housing 31 perpendicular to the plane of symmetry of the line 29 over the whole length of the housing 31 and they have their middle lines parallel between them and with the said plane of symmetry.
  • the transverse section of these grooves is preferably rectangular.
  • the edge 40 these grooves most spaced from the plane of symmetry is substantially flush with the base 36 of the boss 34.
  • the width L (see FIG. 3) of the housing 31 at the level of the grooves 35 is equal, with very slight play, to the width of the portion 3 of the member 1.
  • the height 41 of the grooves is equal to the distance between the edge 40 and the parallel edge 42.
  • the grooves 35 are open at each of their ends.
  • the portion 3 becomes deformed until it acquires an overall thickness equal to the height 41.
  • edges of the portion 3 of the contact member cooperate, as far as they are concerned, on the one hand, with the edge 40 of the groove 35 in two zones respectively neighboring the shoulders 7 and 18, and, on the other hand, with the edge 42 in a zone neighboring the axis 19. In this way, any displacement of the member with respect to the support in the direction of the arrow A is prevented.
  • Zone 10 of loop 5 projects into space E, comprised between the two symmetrical series of partition 32, and in which the element bearing the conducting surface with which the loop 5 must ensure electrical contact will be housed.
  • procedure may, as for the introduction, operate through any end of the housing 31. It suffices to introduce, from the right towards the left for example, between the portion 3 and the insulating support surface bearing the boss 34, a tool adapted to withdraw the tongue 23. The member 1 may then be pushed towards the left, out of the support.
  • the member 1 of the support 28 may advantageously be extracted from the side where the tool is introduced.
  • the tongue 6 is first displaced, the tool is then made to penetrate into the slot 39 so that the beveled end becomes inserted into the space 43 (FIG. 3), comprised between the support 28 and the tongue 23, and comes to withdraw this latter.
  • the space 43 (FIG. 3), comprised between the support 28 and the tongue 23, and comes to withdraw this latter. At this moment, it is possible to withdraw the member 1 of the support towards the left.
  • FIGS. 4 to 6 there may be seen a second embodiment of an electrical contact member and of a connector according to the invention.
  • the contact member 1 only comprises the single tongue 6 of which the width 53 (FIG. 5) is greater than the width 54 of the longitudinal holding surfaces 37 and 38.
  • the tongue 6 bears two stop surfaces 56a, 56b.
  • the latter are advantageously constituted by the transverse edges of an opening 55, rectangular, fashioned in said tongue 6.
  • the boss 34 becomes engaged in the opening 55.
  • the free end 17 of the loop 5 has a width 50 (FIG. 4) slightly less than the width 51 along which the portion 3 of the strip 2 is cut out.
  • the pressure of the end 17 on the tongue 6 favors the cooperation of this latter and boss 34.
  • the said tongue 6 overlaps on both sides of the said boss, in the longitudinal direction, through surfaces 57 (FIG. 5). Due to the fact of the camber of the tongue 6, the distance of this latter to the bottom of the support 28 increases when it is separated longitudinally from the boss 34, which permits the sliding easily of a tool T in the form of a tapered rod (FIG. 6) between the tongue 6 and the bottom of the support 28 to withdraw the said tongue and disengage the boss 34 from the opening 55.
  • This operation may be effected equally through the front or the rear of the support 28, that is to say, in the case of FIG. 6, at the right or at the left.
  • the stop surfaces may be constituted by those of a boss borne by the tongue and the holding surfaces by those of a cavity fashioned in the support, in which cavity this boss may come to be housed.
  • the boss borne by the tongue can be obtained by stamping or be fastened on this tongue.
  • a connector for an insertable printed circuit such that mounting of the electrical contact member 1 in the support 28 may be effected equally through each of the ends of the housings 31, that is to say, either from the side where the fixing of the printed circuit is effected, or from the opposite side (wiring side).
  • dismounting of the member 1 of the support 28 may be effected equally from both sides. This is particularly advantageous when it is necessary to replace, in an installation, defective electrical contact members 1, the replacement then being possible from the side of the connector which is most accessible.
  • the position of the contact tail 4, relative to the support 28, is ensured with precision since there is no play along the directions F and A. This precision enables automatic wiring to be effected, by machine, with connectors equipped with such contact members.
  • the elasticity of the loops 5 enables a good electrical contact to be ensured with the conducting surface of a printed circuit card and this despite nonnegligible variations of thickness of the card of which the manufacturing tolerances are rather wide.
  • Connector for an insertable contact element such as a printed circuit card said connector comprising in combination, an insulating support and at least one electrical contact member housed in said support and constituted by a metallic strip comprising an intermediate portion whose opposite edges are guided by parallel grooves provided in the insulating support and open at their two end,
  • said intennediate portion being cut out so as to have a longitudinal tongue, cooperating with the insulating support to ensure positive clamping of the contact member in one longitudinal direction
  • said intermediate portion being, in addition, contiguous on one side with a tail for wiring and on the other with a curved portion adapted to ensure electrical contact with a conducting surface of a contact element
  • the intermediate portion of said strip having a curved portion which bows said intermediate stri towards said curved portion so as to havewhen re axed a greater thickness than the height of said grooves, in order to hold the contact member in transverse direction with respect to the grooves and locking means located inside the support being provided and arranged to ensure positive clamping of said strip in a direction opposite to said one longitudinal direction unaffected by insertion or extraction of the contact element and to enable the contact member to be introduced in the support and extracted therefrom, either on the side where the insertion of the contact element is effected, or on the opposite side.
  • the locking means comprise, on the side of the insulating support a boss arranged in each housing for an electrical contact member.
  • the locking means comprise, on the side of the electrical contact member, a second longitudinal tongue cut out in the curved portion of the aforesaid metallic strip, .the two tongues being situated in extension of one another and arranged head to tail and adapted to cooperate respectively with the two opposite transverse surfaces of said boss.
  • the locking means comprise, on the side of the contact member, an opening defined in the longitudinal tongue, said opening being adapted to receive said boss, two opposite transverse surfaces of the latter cooperating with two opposite edges of said openmg.

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  • Coupling Device And Connection With Printed Circuit (AREA)
US8595A 1969-02-04 1970-02-04 Connectors for insertable printed circuits Expired - Lifetime US3626361A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6902462A FR2031705A5 (enrdf_load_stackoverflow) 1969-02-04 1969-02-04

Publications (1)

Publication Number Publication Date
US3626361A true US3626361A (en) 1971-12-07

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ID=9028607

Family Applications (1)

Application Number Title Priority Date Filing Date
US8595A Expired - Lifetime US3626361A (en) 1969-02-04 1970-02-04 Connectors for insertable printed circuits

Country Status (6)

Country Link
US (1) US3626361A (enrdf_load_stackoverflow)
JP (1) JPS502061B1 (enrdf_load_stackoverflow)
BE (1) BE745243A (enrdf_load_stackoverflow)
DE (1) DE2004332C3 (enrdf_load_stackoverflow)
FR (1) FR2031705A5 (enrdf_load_stackoverflow)
GB (1) GB1292543A (enrdf_load_stackoverflow)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3808589A (en) * 1972-04-06 1974-04-30 Connectronics Corp Electric contact makers and connectors fitted with such devices
US3813637A (en) * 1972-06-28 1974-05-28 Essex International Inc Retainers for electrical components
US3989344A (en) * 1974-12-26 1976-11-02 Bunker Ramo Corporation Two-position contact for printed circuit cards
US4306761A (en) * 1980-04-11 1981-12-22 General Motors Corporation Terminal with resiliently supported contact bow
US4521065A (en) * 1983-09-27 1985-06-04 General Motors Corporation Socket connector for parallel circuit boards
US4734063A (en) * 1986-01-30 1988-03-29 Joseph J. Koch Radially resilient electric socket
US4932903A (en) * 1987-12-07 1990-06-12 Bonhomme F R Elastically deformable electric contact elements for incorporation in connectors and methods of manufacturing said contact elements
US5496657A (en) * 1994-03-16 1996-03-05 Dixon, Jr.; Alfred R. Modular battery system comprising individual interconnected modules
US6482049B1 (en) 1999-07-16 2002-11-19 Amphenol Corporation Radially resilient electrical connector
USD481996S1 (en) 2002-03-20 2003-11-11 J.S.T. Mfg. Co., Ltd. Pressure contact terminal for power supply jack
US6837756B2 (en) 2001-10-05 2005-01-04 Amphenol Corporation Radially resilient electrical connector and method of making the same
US6899571B1 (en) 2000-05-11 2005-05-31 Konnektech Ltd. Radially resilient electrical connector with welded grid
US7048596B2 (en) 2001-10-18 2006-05-23 Konnektech, Ltd. Electrical connector grid anchor and method of making the same
DE102005026427B4 (de) * 2004-06-09 2008-06-19 Japan Aviation Electronics Industry, Ltd. Elektrischer Verbinder, bei dem ein Abstreifvorgang in einem engen Bereich durchgeführt wird

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3706954A (en) * 1970-12-28 1972-12-19 Molex Inc Connector and arrangement for circuit board assembly therewith

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2380916A (en) * 1939-03-29 1945-08-07 H A Douglas Mfg Co Electrical connection means
US2458097A (en) * 1940-04-01 1949-01-04 H A Douglas Mfg Co Electrical connection means
US2640970A (en) * 1950-06-13 1953-06-02 Gen Motors Corp Electrical connector having a spring-biased line terminal
US3274532A (en) * 1959-02-18 1966-09-20 United Carr Inc Connector for printed wire board
US3283291A (en) * 1964-04-08 1966-11-01 United Carr Inc Electrical means and method of making at least a portion of the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2380916A (en) * 1939-03-29 1945-08-07 H A Douglas Mfg Co Electrical connection means
US2458097A (en) * 1940-04-01 1949-01-04 H A Douglas Mfg Co Electrical connection means
US2640970A (en) * 1950-06-13 1953-06-02 Gen Motors Corp Electrical connector having a spring-biased line terminal
US3274532A (en) * 1959-02-18 1966-09-20 United Carr Inc Connector for printed wire board
US3283291A (en) * 1964-04-08 1966-11-01 United Carr Inc Electrical means and method of making at least a portion of the same

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3808589A (en) * 1972-04-06 1974-04-30 Connectronics Corp Electric contact makers and connectors fitted with such devices
US3813637A (en) * 1972-06-28 1974-05-28 Essex International Inc Retainers for electrical components
US3989344A (en) * 1974-12-26 1976-11-02 Bunker Ramo Corporation Two-position contact for printed circuit cards
US4306761A (en) * 1980-04-11 1981-12-22 General Motors Corporation Terminal with resiliently supported contact bow
US4521065A (en) * 1983-09-27 1985-06-04 General Motors Corporation Socket connector for parallel circuit boards
US4734063A (en) * 1986-01-30 1988-03-29 Joseph J. Koch Radially resilient electric socket
US4932903A (en) * 1987-12-07 1990-06-12 Bonhomme F R Elastically deformable electric contact elements for incorporation in connectors and methods of manufacturing said contact elements
US5496657A (en) * 1994-03-16 1996-03-05 Dixon, Jr.; Alfred R. Modular battery system comprising individual interconnected modules
US6482049B1 (en) 1999-07-16 2002-11-19 Amphenol Corporation Radially resilient electrical connector
US6899571B1 (en) 2000-05-11 2005-05-31 Konnektech Ltd. Radially resilient electrical connector with welded grid
US6837756B2 (en) 2001-10-05 2005-01-04 Amphenol Corporation Radially resilient electrical connector and method of making the same
US7048596B2 (en) 2001-10-18 2006-05-23 Konnektech, Ltd. Electrical connector grid anchor and method of making the same
USD481996S1 (en) 2002-03-20 2003-11-11 J.S.T. Mfg. Co., Ltd. Pressure contact terminal for power supply jack
DE102005026427B4 (de) * 2004-06-09 2008-06-19 Japan Aviation Electronics Industry, Ltd. Elektrischer Verbinder, bei dem ein Abstreifvorgang in einem engen Bereich durchgeführt wird

Also Published As

Publication number Publication date
DE2004332C3 (de) 1979-01-18
DE2004332B2 (de) 1978-05-18
JPS502061B1 (enrdf_load_stackoverflow) 1975-01-23
BE745243A (fr) 1970-07-01
DE2004332A1 (de) 1970-08-06
FR2031705A5 (enrdf_load_stackoverflow) 1970-11-20
GB1292543A (en) 1972-10-11

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