Pluggable optical communications module having an improved latching/delatching mechanism, and an optical communications assembly that includes the module

Patent metadata

Field	Value
Publication number	US-2016174394-A1
Application number	US-201414230025-A
Country	US
Kind code	A1
Filing date	Mar 31, 2014
Priority date	Mar 31, 2014
Publication date	Jun 16, 2016
Grant date	—

Abstract

An optical communications module having an improved latching/delatching mechanism is provided. The slider arms of the latching/delatching mechanism are partially encased in the module housing. Partially encasing the slider arms in the module housing provides the latching/delatching mechanism with greater rigidity and eliminates the possibility of the latching/delatching mechanism becoming dislodged from the module housing due to excessive force being applied to the bail of the latching/delatching mechanism. In addition, the slider arms do not come into contact with the cage as the module housing is being inserted into and extracted from the cage. Distal portions of the slider arms remain outside of the module housing to allow hook features of the distal portions to disengage the cage latches during the delatching process.

First claim

1 . A pluggable optical communications module comprising:
a module housing having a receptacle formed therein for receiving an end of an optical fiber cable, the module housing having at least a top, a bottom, a first side and a second side, the top and bottom being interconnected by the first and second sides such that the top, the bottom, the first side, and the second side form an encasement, wherein components of the module are housed in the encasement, and wherein the first and second sides have first and second cage latch stops thereon, respectively; and a latching/delatching mechanism secured to the module housing, the latching/delatching mechanism including at least a bail and a slider, the bail being pivotally coupled with the module housing to allow the bail to rotate between a latched position and a delatched position, the slider including at least first and second slider arms and a yoke, wherein the yoke is joined with proximal ends of the first and second slider arms and is positioned to mechanically couple with the bail as the bail is pivoted from the latched position to the delatched position, the first slider arm extending along at least a portion of the first side of the module housing and being partially encased within the encasement, wherein at least a distal end of the first slider arm is outside of the encasement, the second slider arm extending along at least a portion of the second side of the module housing and being partially encased within the encasement, wherein at least a distal end of the second slider arm is outside of the encasement, wherein the distal ends of the first and second slider arms include first and second hook features, respectively, that curve outwardly relative to the first and second sides, respectively, of the module housing.

2 . The pluggable optical communications module of claim 1 , the first side of the module housing comprises a first inner side wall and a first outer side wall that are separated by a small gap to form a first channel groove, and wherein the second side of the module housing comprises a second inner side wall and a second outer side wall that are separated by a gap to form a second channel groove, and wherein the partially-encased first slider arm is disposed in the first channel groove and wherein the partially-encased second slider arm is disposed in the second channel groove, the first and second channel grooves having widths that are wider than widths of the partially-encased first and second slider arms to allow the partially-encased first and second slider arms to travel within the first and second channel grooves, respectively, as the bail is pivoted from the latched position to the delatched position.

3 . The pluggable optical communications module of claim 2 , wherein the first and second slider arms have respective heights that are less than respective depths of the first and second channel grooves.

4 . The pluggable optical communications module of claim 2 , wherein the module is adapted to be received in an opening of a cage, the cage having a top, a bottom, a first side and a second side, the top and bottom of the cage being interconnected by the first and second sides of the cage such that the top, the bottom, the first side, and the second side of the cage define the cage opening, and wherein first and second cage latches are disposed on the first and second sides of the cage, respectively, within the opening for engaging the first and second cage latch stops, respectively, and wherein when the bail is pivoted from the latched position to the delatched position, the bail mechanical couples with the slider yoke to exert a force on the slider that pulls the first and second slider arms in a delatching direction to cause the first and second hook features to press outwardly against the first and second cage latches, respectively, thereby disengaging the first and second cage latches from the first and second cage latch stops, respectively.

5 . The pluggable optical communications module of claim 2 , further comprising:
first and second dowel pins that mechanically couple the bail to the module housing, wherein the dowel pins allow the bail to be pivoted from the latched position into the delatched position.

6 . The pluggable optical communications module of claim 5 , wherein first ends of the first and second dowel pins are rotationally coupled to the module housing such that the dowel pins are allowed to rotate about respective axes of the dowel pins, and wherein the first and second dowel pins pass thru first and second openings, respectively, formed in first and second ends, respectively, of the bail.

7 . The pluggable optical communications module of claim 2 , wherein the module housing includes an upper housing portion and a lower housing portion, the upper housing portion comprising the top of the module housing, the lower housing portion comprising the bottom of the module housing, the upper housing portion and the lower housing portion each having first sides and second sides, wherein the first sides of the upper and lower housing portions interface to form the first side of the module housing, and wherein the second sides of the upper and lower housing portions interface to form the second side of the module housing.

8 . The pluggable optical communications module of claim 7 , wherein the first and second slider arms extend along respective portions of the first and second sides, respectively, of the upper housing portion.

9 . The pluggable optical communications module of claim 8 , wherein the first and second cage latch stops are disposed on the first and second sides, respectively, of the upper housing portion.

10 . An optical communications assembly comprising:
a cage having a top, a bottom, a first side and a second side, the top and bottom of the cage being interconnected by the first and second sides of the cage such that the top, the bottom, the first side, and the second side of the cage define a cage opening, and wherein first and second cage latches are disposed on the first and second sides of the cage, respectively, within the opening; and an optical communications module disposed in the cage opening, the module comprising:
a module housing having a receptacle formed therein for receiving an end of an optical fiber cable, the module housing having at least a top, a bottom, a first side and a second side, the top and bottom being interconnected by the first and second sides such that the top, the bottom, the first side, and the second side form an encasement, wherein components of the module are housed in the encasement, and wherein the first and second sides have first and second cage latch stops thereon, respectively, that are engaged with the first and second cage latches, respectively; and
a latching/delatching mechanism secured to the module housing, the latching/delatching mechanism including at least a bail and a slider, the bail being pivotally coupled with the module housing to allow the bail to rotate between a latched position and a delatched position, the slider including at least first and second slider arms and a yoke, wherein the yoke is joined with proximal ends of the first and second slider arms and is positioned to mechanically couple with the bail as the bail is pivoted from the latched position to the delatched position, the first slider arm extending along at least a portion of the first side of the module housing and being partially encased within the encasement, wherein at least a distal end of the first slider arm is outside of the encasement, the second slider arm extending along at least a portion of the second side of the module housing and being partially encased within the encasement, wherein at least a

Assignees

• Avago Technologies General Ip

Inventors

• Lee Chi Keung

Classifications

• H05K5/0073 Primary

  having specific features for mounting the housing on an external structure · CPC title

• G02B6/4277

  Protection against electromagnetic interference [EMI], e.g. shielding means (shielding of electric apparatus H05K9/00, of instruments G12B17/00) · CPC title

• G02B6/4281

  the printed circuit boards being flexible (in general H05K1/147) · CPC title

• G02B6/4261 Primary

  Packages with mounting structures to be pluggable or detachable, e.g. having latches or rails · CPC title