Fiber optical connector assembly

A fiber optical connector assembly comprising:

• a base casing including
• a casing body that has two outer lateral walls spaced apart from each other in a widthwise direction, and two installation recesses extending respectively through said outer lateral walls,
• four retaining block portions, two of said retaining block portions extending respectively from said outer lateral walls of said casing body, each of said two of said retaining block portions having an end section that is distal from the respective one of said lateral walls of said casing body and that cooperates with the respective one of said lateral walls of said casing body to form a gap therebetween such that said two of said retaining block portions are resiliently pressable toward said casing body, another two of said retaining block portions extending respectively from said outer lateral walls of said casing body, each of said another two of said retaining block portions having an end section that is distal from the respective one of said lateral walls of said casing body and that cooperates with the respective one of said lateral walls of said casing body to form a gap therebetween such that said another two of said retaining block portions are resiliently pressable toward said casing body, and
• a coupling portion that protrudes rearwardly from said casing body in a front-rear direction perpendicular to the widthwise direction;
• two converter seats engaged respectively and removably with said two installation recesses;
• two core casings sleeved respectively on said two converter seats, each of said two core casings having
• a core casing portion that extends in the front-rear direction and that is sleeved on a respective one of said two converter seats, and
• a securing portion that is oblique relative to a top-bottom direction perpendicular to the front-rear direction and the widthwise direction, and that extends rearwardly and upwardly from said core casing portion;
• an outer sleeve sleeved on said casing body, covering said installation recesses, and engaged removably with said four retaining block portions, said outer sleeve being permitted to move rearwardly in the front-rear direction relative to said casing body when said four retaining block portions are resiliently pressed toward said casing body to be disengaged from said outer sleeve, thereby exposing said two installation recesses and permitting removal of said two converter seats from said two installation recesses;
• a pressing plate including
• a joining portion that is disposed above and is connected to said outer sleeve,
• an abutment portion that is connected to said joining portion, that extends forwardly, and that is disposed above and abuts against said securing portion of each of said two core casings, and
• an operating portion that extends rearwardly from said abutment portion;
• and
• a pulling unit surrounding said coupling portion and is in contact with said pressing plate;
• wherein said pulling unit is rearwardly movable in the front-rear direction to push said operating portion of said pressing plate upwardly in the top-bottom direction, thereby driving said abutment portion of said pressing plate to move downwardly to press said securing portion of each of said two core casings toward said core casing portion of each of said two core casings.