Inject-eject system for rack mounted plug-in modules

A device for injecting and ejecting a printed circuit board module into and out of a mainframe having an injection bearing surface and an ejection bearing surface, said bearing surfaces being manufactured from a material, said injecting/ejecting device comprising:

• a grasping member having a first end, a middle portion and a second end, said grasping member having an upper side and a lower side, said grasping member having a first side and a second side, said lower side of said grasping member being wide at said middle portion and narrowing toward said first end;
• a lever arm for operating said injecting/ejecting device, said lever arm having a first end and a second end, said first end being integral with said second end of said grasping member and extending therefrom;
• a pivot member having a first section and a second section, said first section of said pivot member being integrally connected to said second end of said 1ever arm, said second section of said pivot member being integral with and adjacent to said first section of said pivot member, said pivot member having a bore hole permitting an interconnection of said injecting/ejecting device to said printed circuit board module, and permitting pivotal movement of said injecting/ejecting device about said interconnection to said printed circuit module;
• an injection finger extending from a lower portion of said second section of said pivot member and integrally connected thereto, said injection finger defining an injection surface on a lower end thereof for contacting said injection bearing surface of said mainframe during insertion of said printed circuit module into said mainframe;
• an ejection finger extending from an upper portion of said second section of said pivot member and integrally connected thereto, said ejection finger defining an ejection surface on a lower end thereof for contacting said ejection bearing surface of said mainframe during extraction of said printed circuit module from said mainframe;
• a front panel adapted to be fixedly attached to a front end of said printed circuit module and perpendicular thereto, said front panel having a notch along an edge thereof and a slot in close proximity to said notch;
• a mounting block adapted to be fixedly attached to said printed circuit module and to said front panel;
• and
• a connection member extending through said bore hole of said pivot member of said injecting/ejecting device and adapted to be attached to said printed circuit module, said connection member permitting pivotal movement of said injecting/ejecting device, said injecting/ejecting device adapted to be attached to said printed circuit module in such a manner that said pivot member of said injecting/ejecting device is on a back side of said front panel, said lever arm and said grasping member extend through said notch in said front panel toward a front side of said front panel, said ejection finger extends through said slot in said front panel toward said front side of said front panel when said printed circuit module is in its fully inserted position within said mainframe, said ejection finger being rotated toward said back side of said front panel and coming into contact with said ejection bearing surface during ejection.