Electrical plug-type connector, particularly for medical technology

• US 5,683,270 A
• Filed: 02/09/1995
• Issued: 11/04/1997
• Est. Priority Date: 02/10/1994
• Status: Expired due to Fees

• Current Assignee: W.W. Fischer SA
• Original Assignee: W.W. Fischer SA
• Inventors: Warislohner, Josef
• Primary Examiner(s): VU, HIEN D
• Application Number:
  US08/386,287
• Time in Patent Office: 999 Days
• Field of Search: 439/607-610, 439/95, 439/98, 439/101, 439/105, 439/108, 439/606
• US Class Current: 439/607.41
• CPC Class Codes: H01R 13/52 Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
• CPC Class Codes: H01R 13/5804 comprising a separate cable clamping part H01R13/5841 takes precedence
• CPC Class Codes: H01R 13/6275 Latching arms not integral with the housing H01R13/6276, H01R13/6277, H01R13/6278 take precedence
• CPC Class Codes: H01R 13/648 Protective earth or shield arrangements on coupling devices , e.g. anti-static shielding coaxially arranged shields H01R24/38
• CPC Class Codes: H01R 13/6485 Electrostatic discharge protection in general H05F1/00, for electric apparatus H05K9/0067
• CPC Class Codes: H01R 2201/12 for medicine and surgery

Abstract

In an electrical plug-type connector composed of a socket and a plug part, A sleeve-shaped metal shielding is embedded in the socket or, respectively, a plug housing of insulating material insulated toward the inside and toward the outside and lies exposed only in a plug zone.

Claims

1. An electrical plug part for plugging into an electrical socket of an electrical plug-type connector, comprising:

a housing of insulating material that receives a housing contact insert and a sleeve-shaped metal shielding extending from a plug zone of the plug part to a cable connection end of the plug part; and

the metal shielding being embedded between an inner insulating material part and an outer insulating material part of the housing and being completely insulated at an inside and an outside of the metal shielding the inner and outer insulating parts of the housing being inner and outer sleeves respectively, of insulating material plugged into one another, the metal shielding being located between said inner and outer sleeves, the outer sleeve having at least one window-shaped clearance in the plug zone, the inner sleeve being axially shorter than the metal shielding and the outer sleeve surrounding the metal shielding, wherein a shield portion of the metal shielding is exposed in the plug zone in an annular gap of the outer insulating material part.

2. The plug part according to claim 1, wherein a plurality of window-shaped clearances, distributed with predetermined angular spacings, are provided at a circumference of the outer insulating material part that surrounds the metal shielding.

3. The plug part according to claim 1, wherein the cable shielding of the cable connected to the plug part is pressed via an expandable thrust collar onto the inwardly exposed annular surface of the metal shielding.

4. The plug part according to claim 3, wherein a pressure member, adjacent the thrust collar, that surrounds the cable is screwed to the cable connection end of the housing, said pressure member collaborating with the thrust collar that, when the pressure member is screwed in, the thrust collar is pressed radially outward via a conical end face provided in the housing onto the exposed annular surface of the metal shielding.

5. The plug part according to claim 4, wherein the conical end face is at the end of a spacer sleeve arranged in the housing between contact insert and thrust collar.

6. The plug part according to claim 1, wherein the plug part has a cable strain relief attached to a cable end of the plug housing, wherein the cable strain relief has a sleeve having a plurality of slots on the cable, ends of sleeve fingers formed by said slots engaging cable cladding of the cable.

7. The plug part according to claim 6, wherein each of the slots of the sleeve has a coating.

8. The plug part according to claim 7, wherein said coating is a heated material that shrinks when heated.

9. An electrical socket for receiving an electrical plug part of an electrical plug-type connector, the plug part having a first housing contact insert, the socket comprising:

an insulated socket housing a back portion, that receives a second housing contact insert and a front portion that forms a plug zone for receiving the plug part;

a sleeve-shaped metal shielding on an outside of said back portion; and

at least one radially inwardly salient shielding contact that is electrically connected to the metal shielding, said at least one radially inwardly shielding contact being provided only in the plug zone and extending partially into said socket housing, said shielding contact engaging a spring member that connects to the metal shielding.

10. The socket according to claim 9, wherein a plurality of shielding contacts, distributed in predetermined angular spacings, are provided at an inside circumference of the plug zone of the insulating socket housing.

11. The socket according to claim 9, wherein the shielding contacts are rollers that are radially inwardly pre-stressed by contact springs that are electrically connected to the metal shielding.

12. The socket according to claim 11 wherein the rollers are double rollers having a conical configuration that fits into an inside circumference of the plug zone.

13. The socket according to claim 9, wherein chambers for acceptance of the shielding contacts are uniformly distributed over a circumference at an outside circumference of the insulated socket housing.

14. The socket according to claim 9, wherein the socket housing also has an insulated outer part surrounding the metal shielding, the metal shielding being embedded between the outer part and the at least a part of the socket housing.

15. The socket according to claim 9, wherein the socket housing has an outer part that surrounds the metal shielding, the outer part being composed of metal.

16. The socket according to claim 15, wherein an outer end face of the outer part is coated with insulated material.

17. An electrical plug-type connector, comprising:

a plug part having a housing of insulating material that receives a first housing contact insert and a sleeve-shaped metal shielding extending from a plug zone of the plug part to a cable connection end of the plug part;

the metal shielding embedded between inner and outer insulating parts of the housing and being insulated at an inside and an outside of the metal shielding the inner and outer insulating parts of the housing being inner and outer sleeves, respectively, of insulating material plugged into one another, the metal shielding being located between said inner and outer sleeves, the outer sleeve having at least one window-shaped clearance for exposing a shield portion of the metal shielding in the plug zone, the inner sleeve being axially shorter than the metal shielding and the outer sleeve surrounding the metal shielding,

a socket having socket housing having a back portion, that receives a second housing contact insert and forms a plug zone at a front portion thereof, the back portion being composed of insulating material;

the socket having a sleeve-shaped metal shielding on an outside of said back portion;

the socket having at least one radially inwardly salient shielding contact that is electrically connected to the metal shielding and that is provided only in the plug zone; and

the at least one window-shaped clearance of the outer sleeve of the plug part and the at least one radially inwardly salient shielding contact of the socket being arranged such that, in a plugged condition, the shielding contact of the socket engages the at least one window-shaped clearance of the plug part and contacts the exposed shielding portion of the metal shielding.

18. The plug-type connector according to claim 17, wherein a seal ring that presses against the socket housing, impermeable to water under pressure in the plugged condition, is provided at the outside circumference of the plug zone of the plug part when the plug part being inserted into the socket housing.

19. The plug-type connector according to claim 17, wherein a releasable interlock is provided between plug part and socket.

20. The plug-type connector according to claim 19, wherein the interlock is composed of at least one resiliently yielding finger on the plug part, the yielding finger having a hook end section, and of at least one hook part at the socket housing that interlocks with the hook section of the finger in a plugged condition of the plug-type connector.