PUSH-LOCK ELECTRICAL CONNECTOR

• US 20160190742A1
• Filed: 08/19/2015
• Published: 06/30/2016
• Est. Priority Date: 10/18/2013
• Status: Active Grant

• Current Assignee: Woodhead Industries Incorporated (KOCH Industries Incorporated)
• Original Assignee: Woodhead Industries Incorporated (KOCH Industries Incorporated)
• Inventors: Jozwik, Keith A., Murphy, Joseph F.
• Granted Patent: US 9,559,459 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01R 13/5202 Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
• CPC Class Codes: H01R 13/622 Screw-ring or screw-casing H01R13/623 takes precedence
• CPC Class Codes: H01R 13/6273 comprising two latching arms
• CPC Class Codes: H01R 13/6583 with separate conductive resilient members between mating shield members

Abstract

An inline multi-pin connector includes cylindrical male and female connector members which are electrically connected together by pushing the two members together end-to-end. Either the male or the female connector member has a metal cylinder disposed about its conductive pins or sockets, which are adapted for mutual engagement, while the other connector member is provided with inner threads. The metal cylinder includes plural resilient, spaced arms, or tabs, disposed about its outer periphery and urged radially outward and into engagement with the other member'"'"'s threads to connect the two connector members. Coaxial seals are disposed between and in contact with the two members as is a compressible O-ring seal. The outer periphery of the inner member'"'"'s cylindrical insulator is provided with alternating peaks and valleys, while the other member'"'"'s metal cylinder is provided with inwardly extending resilient arms which are adapted for positioning within a respective facing valley to prevent vibration-induced disconnection.

Claims

1. For use in a push-lock electrical connector including generally cylindrical male and female connector members having respective plural conductive pins and conductive sockets adapted for mutual engagement in forming electrical connections and an insulator insert in said male connector member attached to said conductive pins for maintaining said conductive pins in fixed position within the connector, said insulator insert comprising:

a generally cylindrical housing having a base portion attached to said conductive pins and a peripheral, resilient, cylindrical lateral wall extending from said base portion and disposed about said conductive pins and defining an opening adapted to receive a female connector member in a tight-fitting manner, wherein said lateral wall includes at least one elongated slot therein allowing said lateral wall to move outward in a resilient manner upon the application of an outwardly directed force to said lateral wall; and

an elastic electrically insulating thin layer of material disposed on an inner surface of the lateral wall of said cylindrical housing and spanning the at least one elongated slot therein to allow said lateral wall to expand radially outward to receive female connecting members having a range of outer diameters in a tight-fitting manner and provide a continuous layer of insulation about the interconnected pins and sockets.

2. The insulator insert of claim 1, wherein said cylindrical housing is comprised of plastic, or other material having high dielectric properties.

3. The insulator insert of claim 1, wherein said elastic electrically insulating material is silicone.

4. The insulator insert of claim 1, wherein said lateral wall includes first and second elongated slots disposed in opposed portions of said lateral wall to facilitate outward deflection of the opposed portions of said lateral wall, and wherein said layer of elastic insulating material spans said first and second elongated slots.

5. The insulator insert of claim 1, wherein said lateral wall includes first through fourth elongated slots equally spaced apart about the circumference of the lateral wall.

6. The insulator insert of claim 1, wherein said lateral wall includes an inwardly directed rib disposed on its inner surface to facilitate alignment of said male connector member with said female connector member when said connector members are pushed together upon connection.

7. The insulator insert of claim 6, wherein said inwardly directed rib is formed integrally with said cylindrical housing and is linear in configuration.

8. The insulator insert of claim 1, wherein said lateral wall includes at least one retaining member disposed on an inner surface thereof to engage an outer surface of the female connector member and provide secure, sealed connection thereto.

9. The insulator insert of claim 8, wherein said at least one retaining member is in the form of a generally circular ring extending about the entire inner surface of said lateral wall and formed integrally therewith.

10. The insulator insert of claim 1, wherein a distal end of said lateral wall includes a flange adapted for engaging in a sealed manner a seal disposed between and in contact with adjacent end portions of the housing'"'"'s lateral wall and said female connector member.

11. The insulator insert of claim 10, wherein said seal is in the form of a compressible circular O-ring.

12. The insulator insert of claim 1, wherein said layer of elastic material has a thickness on the order of a thickness of said generally cylindrical housing.

13. The insulator insert of claim 12, wherein the thickness of said layer of said stretchable material is on the order of 0.007-0.008 inch.

14. The insulator insert of claim 1, wherein the elastic insulator material is comprised of a plastic elastomer.

15. The insulator of claim 1, further comprising electrically conductive particles disposed in said layer of elastic electrically insulating material to provide EMI shielding.

16. The insulator of claim 1, wherein said generally cylindrical housing is comprised of a plastic material such as polyurethane or a low durometer epoxy.

17. For use in a push lock electrical connector including generally cylindrical male and female connector members having respective plural conductive pins and conductive sockets adapted for mutual engagement in forming electrical connections, and an insulator insert in said female connector member attached to said conductive sockets for maintaining said conductive sockets in fixed position within the connector, said insulator insert comprising:

a generally cylindrical housing including a base portion attached to said conductive sockets and a peripheral cylindrical outer wall having an annular outer recessed slot extending about said cylindrical outer wall;

a generally circular continuous seal member disposed on and about the peripheral outer wall of said cylindrical housing and extending outwardly from said outer wall, wherein said seal member is adapted to receive about its outer periphery the generally cylindrical male connector member in tight-fitting engagement to securely connect the male and female connector members together in a sealed manner; and

a thin layer of an electrically insulating lastic material disposed on said circular seal member about its entire periphery and adapted to receive and engage about its generally circular outer periphery a male connecting member, wherein said male connecting member has an inner diameter which may vary over a range of values, and wherein the housing'"'"'s peripheral outer wall and said elastic material layer are adapted to reduce in diameter to accommodate the range of male connecting member inner diameters while maintaining a continuous layer of said electrically insulating material about the connector'"'"'s pins and sockets.

18. The insulator insert of claim 17, wherein said elastic electrically insulating material is silicone, polyurethane or an elastic epoxy.

19. The insulator insert of claim 17, wherein said generally cylindrical housing is comprised of plastic, or other material with high dielectric properties.

20. The insulator insert of claim 17, wherein said cylindrical housing includes a generally linear inward directed recessed portion on its outer surface to facilitate alignment of said female connector member with said male connector member when said connector members are pushed together to form an electrical connection.

21. The insulator insert of claim 20, wherein said generally linear recessed portion is formed integrally with said cylindrical housing.

22. The insulator insert of claim 17, wherein said male connector member has an outer lateral wall, and wherein said layer of elastic material has a thickness on the order of the thickness of the outer lateral wall of said male connector member.

23. The insulator insert of claim 22, wherein the thickness of the layer of elastic material is on the order of 0.007-0.008 inch.

24. The insulator insert of claim 17, wherein said elastic electrically insulating material is comprised of a plastic elastometer.

25. The insulator insert of claim 17 further comprising electrically conductive particles disposed in said thin layer of elastic electrically insulating plastic material to provide electromagnetic interference (EMI) shielding.

26. The insulator insert of claim 17, wherein said generally cylindrical housing is comprised of a plastic material such as polyurethane or a low durometer epoxy.

27. For use in a push lock electrical connector having generally cylindrical male and female connector members respectfully having plural conductive pins and conductive sockets adapted for mutual engagement in forming electrical connections, a connection arrangement for allowing a male connector member to receive female connectors having a range of outer diameters or for allowing a female connector member to receive male connectors having a range of inner diameters, said connection arrangement comprising:

a first generally cylindrical housing of said male connector member and a second generally cylindrical housing of said female connector member, wherein said first cylindrical housing of the male connector member includes a generally cylindrical wall extending from a first end of said first cylindrical housing and defining an open end within which are disposed the conductive pins and wherein said open end is adapted to receive in a tight-fitting manner a first end of said female connector member bearing said conductive sockets;

first means disposed in said cylindrical wall for allowing said cylindrical wall to expand radially outward to accommodate a female connector member of larger diameter, or second means disposed in or on an outer surface of said female connector member to allow said female connector member to contract radially inward to accommodate a male connector member of reduced diameter; and

a thin layer of elastic electrically insulating material disposed on either an inner surface of the male connecting member'"'"'s cylindrical wall or the female member'"'"'s outer surface to respectively allow said cylindrical wall to expand radially outward or the outer surface of said female connector member to contract radially inward to accommodate the insertion of a larger female connector member into a male connector member or a smaller male connector member onto a female connector member while providing a continuous layer of said elastic electrically insulating material disposed about said pins and sockets.