Plug connector for optical fibers

• US 5,348,487 A
• Filed: 05/11/1993
• Issued: 09/20/1994
• Est. Priority Date: 05/20/1992
• Status: Expired due to Term

• Current Assignee: Diamond SA
• Original Assignee: Diamond SA
• Inventors: De Marchi, Silverio, Marazzi, Silvio
• Primary Examiner(s): BISHOP, STEVEN C
• Application Number:
  US08/059,359
• Time in Patent Office: 497 Days
• Field of Search: 439/135-138, 439/142, 439/146, 439/149
• US Class Current: 439/138
• CPC Class Codes: G02B 6/3807 Dismountable connectors, i.e. comprising plugs
• CPC Class Codes: G02B 6/381 of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
• CPC Class Codes: G02B 6/3833 Details of mounting fibres in ferrules; Assembly methods; Manufacture
• CPC Class Codes: G02B 6/3849 using mechanical protective elements, e.g. caps, hoods, sealing membranes G02B6/3816 takes precedence; provisionally see H01R13/44
• CPC Class Codes: G02B 6/3893 Push-pull type, e.g. snap-in, push-on
• CPC Class Codes: H01R 13/453 Shutter or cover plate opened by engagement of counterpart

Abstract

The connector pin (2) is protected by a lid (6) which is opened into the sleeve portion (3) when the plug portion (1) is slid in linearly. For this purpose, a sleeve portion is provided with a control path, for example in the form of guide grooves (30), which coordinates with the cover (6). When withdrawing the plug portion (1), the lid (6) is once again closed with the aid of the control path.

Claims

1. In an optical fiber connector comprising a plug (1) having at least one connector pin with an optical end surface and a receptacle (3) having at least one sleeve for receiving the connector pin, the plug portion including a shield for protecting the end surface of the connector pin, said shield having a hinge connection with the plug so that it can swing from a closed position covering said end surface to an open position exposing said end surface, the improvement wherein

said hinge connection includes an element which is slidably mounted in the plug, and the cover has a guide piece, extending beyond the hinge connection, which engages a protrusion in said receptacle as the plug is inserted, causing the cover to pivot, exposing the pin, and to move rearward.

2. A connector as recited in claim 8, wherein the cover pivot approximately 90°

between its open and closed positions.

3. A connector as recited in claim 1, wherein the plug has an end portion (9) beyond out of which the connector pin protrudes, and the cover, in its closed position, bears against the end surface of the end portion.

4. A connector as recited in claim 1, wherein the cover has an inner face oriented at an angle with respect to the end surface of the pin, to prevent reflection of light from the inner face back into the optical fiber.

5. A connector as recited in claim 1, wherein the plug includes a housing having an approximately rectangular cross section.

6. A connector as recited in claim 1, wherein the sleeve portion is a central component which can be mounted on a housing wall, and the plug portion can be slid into said central component from both sides, and a separate control path is provided for each plug portion in the sleeve portion.

7. A connector as recited in claim 1, further comprising means for latching the plug in the receptacle.

8. A connector as recited in claim 1, wherein the plug has a guide slot and the slidably mounted element has a protruding cam which slides in the slot.

9. A connector as recited in claim 8, wherein the receptacle ha a guide groove and the slidably mounted element has an engagement member which is received in the guide groove when the plug is inserted.

10. A connector as recited in claim 9, wherein the guide groove is configured so that the cover is retracted into the open position behind the plane of the end surface of the pin.

11. A connector as recited in claim 8, further comprising a spring biasing the cover towards its closed position.

12. A connector as recited in claim 11, wherein the spring is a spring cam compressed against a surface of the plug when the cover is closed.