Electronic device having a printed circuit board unit therein

An electronic device for use in a communication system unit, said unit including a mounting chassis having a plurality of compartments, each compartment comprising means for receiving said electronic device and an electrical connector for making electrical connection thereto, said electronic device comprising:

• a printed circuit board unit including a printed circuit board, said board being provided at one end with an integral electrical connector for engagement with said electrical connector of a respective one of said chassis compartments and at the opposite end with an integral handle for use for the insertion and removal of the electronic device into and from the chassis, and
• cover means for containing said printed circuit board unit with said electrical connector and said handle projecting out from said cover means, said cover means being adapted to serve as guide means for insertion of the electronic device into the respective mounting chassis compartment and for positioning said circuit board within said cover means, said cover means being constructed from a single member, said single member comprising
• first and second cover portions,
• flexible hinge means for permitting said cover portions to be pivotally moved with respect to each other between open and closed positions of said cover means,
• supporting seats formed on the inside of said cover portions for securely holding said printed circuit board unit when said cover means is in the closed position, and
• locking means for retaining said cover means in the closed position, said locking means comprises a locking pin formed on the supporting seats on one of said cover portions, each said locking pin being adapted to pass through a hole formed in the printed circuit board for snap engagement with a hole formed in the other supporting seat on the other of said cover portions when said cover means is in the closed position.