Optical connector having improved guide pin retention
View Patent ↗An optical connector includes a connector housing, a retaining plate, and two pins. The connector housing has two bores extending between rearward and forward ends of the connector housing. The retaining plate has a central opening with notches in two of its sides. Each pin extends through one of the notches, which engages the respective groove. The pins extend through the respective bores in the connector housing.
1. An optical connector, comprising:
a connector housing having a first bore extending between a rearward end of the connector housing and a forward end of the connector housing and a second bore extending between the rearward end of the connector housing and the forward end of the connector housing;
a rigid retaining plate abutting an outside surface of the rearward end of the connector housing, the retaining plate having a central opening with a first side and a second side opposite the first side, the first side having a first notch, the second side having a second notch;
a first pin having an elongated shaft with a first groove in a first end of the first pin forming a first head, the first pin extending through the first notch perpendicularly to the retaining plate with an inside surface of the first head abutting an outside surface of the retaining plate, the first groove engaged in the first notch, the first pin extending through the first bore; and
a second pin having an elongated shaft with a groove in a first end of the second pin forming a second head, the second pin extending through the second notch perpendicularly to the retaining plate with an inside surface of the second head abutting an outside surface of the retaining plate, the second groove engaged in the second notch, the second pin extending through the second bore.
2. The optical connector of claim 1 , wherein the central opening has exactly three sides, a third side extending between the first and second sides.
3. The optical connector of claim 1 , wherein:
the first groove has a flat sidewall forming the inside surface of the first head abutting a flat surface of the retaining plate; and
the second groove has a flat sidewall forming the inside surface of the second head abutting a flat surface of the retaining plate.
4. The optical connector of claim 1 , wherein:
the first groove has a rectangular profile with two parallel flat sidewalls, a first of the parallel flat sidewalls forming the inside surface of the first head; and
the second groove has a rectangular profile with two parallel flat sidewalls, a first of the parallel flat sidewalls forming the inside surface of the second head.
5. The optical connector of claim 4 , wherein:
the first pin has a first barrel extending from the second of the two parallel flat sidewalls, the first barrel extends through the first bore between the rearward end of the connector housing and the forward end of the connector housing, and no portion of the first pin has a diameter exceeding a diameter of the first barrel; and
the second pin has a first barrel extending from the second of the two parallel flat sidewalls, the second barrel extends through the second bore between the rearward end of the connector housing and the forward end of the connector housing, and no portion of the second pin has a diameter exceeding a diameter of the second barrel.
6. The optical connector of claim 5 , wherein:
the first head has a diameter equal to a diameter of the first barrel; and
the second head has a diameter equal to a diameter of the second barrel.
7. The optical connector of claim 1 , wherein the connector, retaining plate and first and second pins are included in an optical communications module.
8. The optical connector of claim 7 , wherein the optical communications module is an optical transceiver module.
9. The optical connector of claim 7 , wherein the central opening has exactly three sides, a third side extending between the first and second sides.
10. The optical connector of claim 7 , wherein:
the first head has a domed shape with an apex abutting an interior wall of the optical communications module; and
the second head has a domed shape with an apex abutting the interior wall of the optical communications module.
11. The optical connector of claim 10 , wherein a low-friction coating is disposed on at least one of the first head, the second head, and the interior wall.
12. The optical connector of claim 10 , wherein:
a first portion of a low-friction material is interposed between the first head and the interior wall of the optical communications module; and
a second portion of the low-friction material is interposed between the second head and the interior wall of the optical communications module.
13. An optical connector, comprising:
a connector housing having a first bore extending between a rearward end of the connector housing and a forward end of the connector housing and a second bore extending between the rearward end of the connector housing and the forward end of the connector housing;
a rigid retaining plate abutting an outside surface of the rearward end of the connector housing, the retaining plate having a central opening with a first side and a second side, the first side having a first notch, the second side having a second notch;
a first pin having an elongated shaft with a first groove in a first end of the first pin forming a first head, the first pin extending through the first notch perpendicularly to the retaining plate, the first groove engaged in the first notch, the first groove having a flat sidewall forming an inside surface of the first head abutting the retaining plate, the first pin extending through the first bore;
a second pin having an elongated shaft with a second groove in a first end of the second pin forming a second head, the second pin extending through the second notch perpendicularly to the retaining plate, the second groove engaged in the second notch, the second groove having a flat sidewall forming an inside surface of the first head abutting the retaining plate, the second pin extending through the second bore;
a first abutting interface between the first head of the first pin and a module housing wall including a low-friction material; and
a second abutting interface between the second head of the second pin and a module housing wall including the low-friction material.
14. The optical connector of claim 13 , wherein:
the first head has a diameter equal to a diameter of the first barrel; and
the second head has a diameter equal to a diameter of the second barrel.
15. The optical connector of claim 13 , wherein the connector, retaining plate and first and second pins are included in an optical communications module.
16. The optical connector of claim 15 , wherein the optical communications module is an optical transceiver module.
17. The optical connector of claim 15 , wherein:
the first head has a domed shape with an apex abutting an interior wall of the optical communications module; and
the second head has a domed shape with an apex abutting the interior wall of the optical communications module.
18. The optical connector of claim 15 , wherein the central opening has exactly three sides, a third side extending between the first and second sides.
19. The optical connector of claim 15 , wherein the low-friction material comprises a coating disposed on at least one of the first head, the second head, and the interior wall.
20. The optical connector of claim 15 , wherein the low-friction material comprises a pad having a first portion interposed between the first head and the interior wall of the optical communications module and a second portion interposed between the second head and the interior wall of the optical communications module.