US2953767A

US2953767A - Printed circuit screw lock connectors

Info

Publication number: US2953767A
Application number: US667762A
Authority: US
Inventors: Jackson Anton; Boris A Jackson
Original assignee: Individual
Current assignee: Individual
Priority date: 1957-06-25
Filing date: 1957-06-25
Publication date: 1960-09-20
Anticipated expiration: 1977-09-20

Description

Sept. 20, 1960 A. JACKSON ETAL PRINTED CIRCUIT SCREW LOCK CONNECTORS Filed June 25. 1957 United States Patent O PRINTED CIRCUIT SCREW LOCK CONNECTORS Anton Jackson, Truesdale Lake Shore, South Salem, N.

and Boris A. Jackson, 30 La Farge Lane, Manhasset, N.Y.

Filed June 25, 1957, Ser. No. 667,762

1 Claim. (Cl. 339-92) This invention relates to screw lock connectors adapted for use in connection with what are known as printed circuits. More particularly, the invention deals with a connector of this type and kind, wherein the connectors are mounted in metallic frames, in which the screw lock elements are mounted in movement of the connectors into and out of engagement with each other.

Still more particularly, the invention deals with a connector structure of the character described employing the double lead screw couplings and, wherein, the frames or casings have internesting portions assisting in alinement of the connectors one with respect to the other in the coupling engagement.

The novel features of the invention will be best understood from the following description, when taken together with the accompanying drawing, in which certain embodiments of the invention are disclosed and, in which,

side walls

22, 23 joined at their ends in end walls 24,.

printed circuit card, diagrammatically illustrated at 19 in Figs. l and 2. No details of the circuits on the card 19 have been shown, as this forms no part of the presentV invention. It will appear, from Fig. 1, that some of the pin contacts 18 are disposed in a higher plane than the other pin contacts and the grooves 17 are proportionately formed.

Mounted on the lower surface of the connector 12vis an elongated rectangular mounting or coupling frame 20, including a housing portion 21 dened by long parallel which are contracted in the direction of the wall 23, as noted inpFig. 3, thus forming an odd-shaped chamber within the housing 21. The lower surface of the connector 12 has a downwardly protruding portion 12', gen' g erally conforming with the contour of the socket, but

spaced from the walls of the housing dening said socket to form, within the socket, an annular recess around the protruding portion 12'. j Protruding beyond the ends of the walls 24 of the4 frame 20 are angle iron portions 26 dened partially yby.

extensions to the wall 22 and by 4a wall portion 27.

Now, considering Fig. 2, it will appear that the endsV of the connector 12 arranged upon the extensionsV 26 have apertures 28, in the upper end of which is mounted an internally threaded collar 29, with which is'coupled the separate parts are designated by suitable reference 'I tion and showing only part of the contacts of the socket connector.

Fig. 2 is a section on the line 2-2 of Fig. l, with parts of the construction shown in elevation.

Fig. 3 is a bottom plan view of the upper or pin part of the connector, as seen in Fig. 1, indicating only part of the pins of the connector; and

Fig. 4 is a top plan view of the socket connector part, as seen in Fig. 1, indicating only part of the sockets.

In the accompanying drawings, only part of the pin and socket contacts of the connectors are illustrated in order to simplify the showing. However, in Fig. 1, the protruding contact pins for engagement -with a printed circuit are all illustrated. It will, thus, be apparent that, in the present illustration of one adaptation and use of our invention, there will be eleven sockets in the socket connector and eleven pins in the pin connector for engagement with said sockets.

In Fig. 1 of the drawing, we have shown 4in slightly spaced relationship to each other and in alinernent for assemblage the pin connector unit 10 and the socket connector unit 111. A bottom plan View of the unit 10 is shown in Fig. 3 and a top plan view of the unit 11 is shown in Fig. 4. The unit 10 has an insulated, preferably plastic, connector body 12 with spaced pin contacts, diagrammatically illustrated at 13, the pin contacts projecting through the lower surface of the connector 12,

the upper threaded end 30 of a bushing 31 seating in the lower portion of the aperture 28 and in an aperture 32 of the wall 27. The combination of the collar 29 and bushing 31 serves to secure the connector 12 to theV frame 20.

Freely movable axially in the bushing 31 is the socket member 33 of .a screw lock connector, the lower portion having a double lead thread socket 34 and the upper end an elongated pin 35, which extends into a iingerpiece.

` knob 36 and is keyed thereto, as indicated at 37.. Disposed between the lower endof the knob in the upper surface of the collar 29 and connector 12 are washers, as at 38. The axially free mounting of the socket mem-v ber 33 provides for automatic alinernent of the connectors one with the other, the screw lock male or pin portions 39 having a similar mounting in the frame 40 of the connector 15, or protruding plate portions 41 of said frame.

At this time, it is pointed out that only one of the screw lock units is being specifically described, namely the one shown in section in Fig. 2. '1t will be understood, however, that the companion unit, at the opposed side of the connectors, as shown in Fig. l, is of identical construction; thus, the brief description of one will apply to the other and like references will be used on like parts.

The frame 40 is elongated and rectanglar in form and has, as shown in the drawing, an upwardly protruding housing portion 42, generally of the same contour as the housing 21 and, for this reason, no detail description of the wall structure of the housing is deemed to be necessary. The housing 42 is smaller than the housing 21 and is adapted to t freely, but snugly, within the housing 21, the upper edge of the housing 42 tting within the groove 25 of the housing 21.

It will appear, from a consideration of Fig. 1 of the drawing, that the connector 15 is mounted within the housing 42 and is retained therein by set screws or other fasteners, as indicated, in part, at 43. In this mounting, the upper surface 44 of the connector 15 is spaced below the upper edge of the housing 42, this construction providing a recess for reception of the extension -12 of the connector 12.

The lower part of the frame 40 is slightly enlarged, as seen at 45, to seat upon the lower edge of the housing 21 and, in the coupling engagement of .the connectors,

these two surfaces are brought into abutting engagement with each other. The pins 39 or male coupling portions of the screw locks are freely disposed in, but 'keyed against rotation, in apertures 46 inthe plate portions 4,1, thus providing the axial shifting for alinement, as previously stated. The keying of the pins 39 can be flat slides on the portions 47 of the pins which are disposed within the apertures 46.

The pins 39 have enlarged double lead thread portions 48 for engagement with the threaded sockets 34. By utilizing the double lead thread construction, quick coupling and uncoupling of the connectors is made possible and, further, this construction, in combination with the free mounting of the pin and socket portions, pre- Vents jamming of the connectors in the coupling and uncoupling operation, even though one of the knobs 36 is operated to a materially greater extent than the opposed knob.

It will be apparent, from a consideration of Fig. 2 of the drawing, that alinement f the connectors is established through the sockets 33 and pins 39 prior to engagement of the housing 42 with the housing 21. The upper edge of the wall of the housing 42 is bevelled, as seen at 42', so as to be guided in the housing 21 and, after engagement of the housings one with the other, the contact pins 13 will be Vbrought into alinement with the sockets 14, thus insuring positive engagement between the connectors. By utilizing the frames on the two connectors, a well reinforced mounting is provided which dispenses with any stresses or strains upon the plastic or other insulated bodies of the

connectors

12 and 15. For purposes of description, the

housings

21, 42 may be said to be dovetail in form, thus providing, in the one frame, a deep dovetail socket and, in the other frame, a shallow dovetail socket. Also, descrip- -tively speaking, the

parts

33, 39 may be said to comprise the screw lock female and male coupling elements.

Having fully described our invention, what we claim as new and desire to secure by Letters Patent is:

' A screw lock connector of the character described, comprising a male or pin contact connector body and a female or socket contact connector body, an elongated rectangular reinforcing frame mounted in conment from end portions of said frames, said elements be- I ing in common alinement for moving the frames and said connector bodies into, operative and inoperative engagement with each other, said elements guiding initial assemblage of the connector bodies, the male connector having bushings seating on and extending through the frame thereof, said bushings extending into the male connector body and threaded to engage threaded collars seating in said male connector body, said bushings and co1- lars serving to secure the frame to the male connector body, the screw lock elements of the male connector body seating in said bushings and having axiallyA and radially free mountings in said bushings, and means coupled with said elements and arranged outwardly of said male connector body for retaining said elements against displace ment from said bushings.

References Cited in the le of this patent UNITED STATES PATENTS 1,152,005 Clark Aug. 31, 1915 1,686,534 Rosenzweig Oct. 9, 1928 1,897,954 DOlier Feb. 14, 1933 2,068,399 Dash et al. Jan. 19, 1937 2,457,119 Bour Dec. 28, 1948 2,659,872 Gilbert Nov. 17, 1953 2,746,022 Gilbert May 15, 1956 2,761,108 Jackson et al. Aug. 28, 1956 2,790,153 Arson Apr. 23, 1957 2,845,604 Jackson et al. July 29, 1958 2,903,668 Cornell Sept. 8, 1959 FOREIGN PATENTS 289,213 Germany Dec. 5, 1914 OTHER REFERENCES Tele-Tech & Electronics Industries Pub., December 1955, page 105.