Anti-snag duplex connector

• US 5,579,425 A
• Filed: 08/30/1995
• Issued: 11/26/1996
• Est. Priority Date: 08/30/1995
• Status: Expired due to Fees

• Current Assignee: Fitel USA Corporation
• Original Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Inventors: Lampert, Norman R., Shevchuk, George J.
• Primary Examiner(s): Bovernick, Rodney B.
• Assistant Examiner(s): Sanghavi, Hemang
• Application Number:
  US08/520,809
• Time in Patent Office: 454 Days
• Field of Search: 385/55, 385/56, 385/59, 385/60, 385/71, 385/75, 385/76, 385/53, 385/135, 385/136, 385/137, 385/139, 439/494, 439/595, 439/596, 439/606, 439/638, 439/675, 439/676, 439/660, 439/701
• US Class Current: 385/59
• CPC Class Codes: G02B 6/3869 Mounting ferrules to connector body, i.e. plugs
• CPC Class Codes: G02B 6/3879 Linking of individual connector plugs to an overconnector, e.g. using clamps, clips, common housings comprising several individual connector plugs
• CPC Class Codes: G02B 6/38875 Protection from bending or twisting
• CPC Class Codes: G02B 6/3889 using encapsulation for protection, e.g. adhesive, molding or casting resin
• CPC Class Codes: G02B 6/389 characterised by the method of fastening connecting plugs and sockets, e.g. screw- or nut-lock, snap-in, bayonet type
• CPC Class Codes: G02B 6/3893 Push-pull type, e.g. snap-in, push-on

Abstract

A duplex connector 300 is constructed by joining together a pair of simplex connectors 10 --10 using one or more plastic clips 210. Each simplex connector includes a latch 120 for interlocking it with a jack receptacle 40, and each simplex connector includes a pair of pin-receiving holes 103-104, 163-164 on its opposite side surfaces. Each clip includes a first planar structure 211 having a pair of cylindrical pins 203-204, 263-264, having different diameters, in each of two different regions that are press-fit into the pair of simplex connectors. In one configuration, a single clip 210 is used to join the pair of simplex connectors together, side-by-side, to form a horizontally stacked duplex connector 300. In this configuration, a second planar structure 212 is pivotally attached to the top edge 214 of the first structure to prevent snagging, and to enable the user to manually deflect both latches 120--120 simultaneously. In another configuration, a pair of clips 510--510 are used to join the simplex connectors together, one on top of the other, to form a vertically stacked duplex connector 500. In this configuration, the anti-snag feature is provided by cantilever triggers 130--130 that are mounted on each simplex connector adjacent to the latches.

Claims

1. A duplex connector comprising a pair of simplex connectors joined by a duplex clip, each simplex connector comprising a generally rectangular housing having:

(i) a plug end for insertion into a mating receptacle, (ii) a cable-entrance end for receiving a cable containing a transmission medium, and (iii) top-, bottom-, left-, and right-side surfaces;

said duplex clip comprising a first planar structure having one or more pins which extend in a direction that is generally perpendicular to the first planar structure, said left- and right-side surfaces including one or more pin-receiving holes therein for interconnection with the duplex clip,

CHARACTERIZED IN THAT;

each housing further includes a latch mounted on its top-side surface for securing it to a receptacle, said latch being movable toward the bottom-side surface of the housing; and

the duplex connector further includes at least one cantilever member for slidably engaging the latch to release the housing from the mating receptacle, said cantilever member forming an acute angle with the top-side surface of the housing that points in a direction away from the plug end of the housing toward the cable-entrance thereof.

2. The duplex connector of claim 1 wherein the cantilever member comprises a second planar structure, pivotally attached to the first planar structure and perpendicular thereto, said second structure being positioned to engage the latch on each of the simplex connectors and to deflect them toward the bottom-side surface of the housing.

3. The duplex connector of claim 1 wherein the cantilever member comprises a cantilever trigger, mounted on the top-side surface of each simplex connector housing, each cantilever trigger forming an acute angle with the top side surface of the housing that points in a direction away from the plug end of its associated connector toward the cable-entrance end thereof.

4. The connector of claim 1 wherein the transmission medium comprises an optical fiber.

5. The connector of claim 2 wherein the duplex clip is molded from a thermoplastic material, said first planar structure being hinged to the second planar structure by portions of the thermoplastic material which are suitably thin to withstand repeated flexing without breaking.

6. The connector of claim 5 wherein the thermoplastic material includes polycarbonate.

7. The connector of claim 1 wherein said one or more pins are cylindrical.

8. A duplex connector comprising a pair of simplex connectors joined by a pair of clips, each simplex connector comprising a generally rectangular housing having:

(i) a plug end for insertion into a mating receptacle, (ii) a cable-entrance end for receiving a cable containing a transmission medium, and (iii) top-, bottom-, left-,and right-side surfaces, the left- and right-side surfaces including one or more pin-receiving holes therein for interconnection with the clips;

each clip comprising a generally planar structure having a plurality of pins on an inside surface thereof, said pins extending in a direction that is perpendicular to the clip,

CHARACTERIZED IN THAT;

each simplex connector includes a cantilever latch mounted on its top side surface for securing it to a receptacle, said latch being movable toward its bottom-side surface;

each simplex connector further includes a cantilever trigger, mounted on its top-side surface, for slidably engaging the latch to release the housing from the receptacle, the cantilever trigger forming an acute angle with the top-side surface that points in a direction away from the plug end of the housing toward the cable-entrance end of the housing; and

the simplex connectors are joined together along their bottom-side surfaces so that the cantilever triggers and latches are on opposite sides of the duplex connector.

9. The connector of claim 8 wherein the transmission medium comprises an optical fiber.

10. In combination, a pair of simplex connectors joined by a duplex clip:

each simplex connector terminating a transmission medium and comprising a generally rectangular housing which includes;

(i) a plug end for insertion into a receptacle, (ii) a cable-entrance end for receiving the transmission medium, (iii) top-, bottom-, left-, and right-side surfaces, the left- and right-side surfaces including one or more pin-receiving holes therein for interconnection with the duplex clip, and (iv) a latching member mounted on the top-side surface for securing the housing to a receptacle;

the duplex clip comprising a first planar structure having one or more pins for for interconnection with the pin-receiving holes of the simplex connectors; and

means for slidably engaging the latching members to release each of the housings from the receptacle and for precluding the latching members from snagging other wires and cables when the simplex connectors are pulled by their transmission media.

11. The combination of claim 10 wherein the duplex clip joins the left-side surface of one simplex connector to the right-side surface of the other simplex connector.

12. The combination of claim 11 wherein the duplex clip further includes a second planar structure, pivotally attached to the first planar structure and perpendicular thereto, the second planar structure being movable in a direction that is co-planar with the first structure for deflecting the latch toward the bottom-side surface of the connector.

13. The combination of claim 12 wherein the duplex clip is molded from thermoplastic material, and the movable attachment between the first and second planar surfaces comprise a living hinge that joins the planar surfaces.

14. The combination of claim 10 wherein the duplex clip joins the bottom-side surface of one simplex connector to the bottom-side surface of the other simplex connector.

15. The combination of claim 14 wherein said means for slidably engaging the latching members comprises a cantilever trigger mounted on the top-side surface of each housing.

16. The combination of claim 10 wherein the duplex clip includes two pairs of cylindrically shaped pins, the pins within each pair having different diameters.

17. The combination of claim 10 wherein the pins and pin-receiving holes are cylindrically shaped, each pin being slightly larger in diameter than its corresponding pin-receiving hole.

18. The combination of claim 10 wherein the duplex clip and the connector are made from thermoplastic material.

19. The combination of claim 18 wherein the thermoplastic material includes polycarbonate.

20. The combination of claim 10 wherein the transmission media comprise optical fibers.

21. A duplex connector comprising a pair of spaced-apart optical plugs at its front-end that are adapted to fit into a pair of adjacent cavities in a jack receptacle, the optical plugs being spaced apart from each other by a separator;

each plug comprising a fiber-holding structure enclosed within a plastic housing having a latching tab molded into its exterior surface for interlocking the plug with the jack receptacle, said latching tab comprising a cantilever whose fixed end is positioned toward the front-end of the duplex connector and whose free end is positioned toward a back end of the duplex connector, said duplex connector further comprising at least one release member for engaging the latching tabs to release the optical plugs from the jack receptacle, said release member comprising a cantilever whose fixed end is positioned toward the back end of the duplex connector and whose free end is positioned toward the front end of the duplex connector.

22. The duplex connector of claim 21 wherein the fiber-holding structure comprises:

a cylindrical ferrule, a base member, and a compression spring;

the base member having a front portion which attaches to the ferrule and a back portion which is surrounded by the compression spring, said ferrule and base member each including an axial passageway for receiving an end portion of an optical fiber.

23. The duplex connector of claim 21 wherein the separator comprises a plastic part that attaches to each of the optical plugs and maintains a predetermined separation therebetween.