Quick release connecting device

A quick release connecting device for releasably securing a circuit board within an interior cavity of a rack or chassis, the interior cavity having an opening defined between opposing first and second sidewalls through which the circuit board is removably inserted, the connecting device comprising:

• an actuating retainer including a first push section protruding from a first end thereof and a retaining section protruding from a second end thereof for detachably engaging with the first sidewall of the rack or chassis, the retaining section having an engagement surface which faces the first end of the actuating retainer and engages an inner surface of the first sidewall in a latched position of the connecting device, and a central body portion of the actuating retainer comprising a receiving space defined therein;
• a fixing member including a central body portion extending through an opening of the receiving space of the actuating retainer and having a pin connection means pivotably connecting the fixing member to the actuating retainer, an inner end of the fixing member being pivotably received within the receiving space, and the fixing member comprising a pivot portion formed on an outer end thereof located outside the receiving space and having a through hole pivotably receiving a fastener for detachably connecting with the circuit board, the Divot portion comprising a second push section protruding from a distal end thereof for detachably engaging with the second sidewall of the rack or chassis, the second push section comprising a holding cavity defining opposing engagement surfaces for engaging inner and outer surfaces of the second sidewall in the latched position of the connecting device;
• and
• an arc-shaped elastic element disposed in the receiving space of the actuating retainer with an end directly pressed against an inner wall surface of the receiving space and another opposite end against the inner end of the fixing member, the elastic element biasing the fixing member to rotate relative to the actuating retainer about the pin connection means to the latched position;
• wherein, to move the connecting device from the latched position to an unlatched position to remove the circuit board from the rack or chassis, the first push section is pushed outwardly toward the first sidewall to rotate the actuating retainer relative to the fixing member to separate the retaining section from the inner surface of the first sidewall, and the actuating retainer and the fixing member are subsequently rotated about the pivot portion fastener outwardly from the opening of the rack or chassis such that the second push section disengages from the inner surface of the second sidewall and pushes against the outer surface of the second sidewall to separate the circuit board from the rack or chassis.