Tool-less multi-stage insertion and securing mechanism for electronic mezzanine assemblies

1. A multi-stage mezzanine board mounting assembly within a computer chassis, comprising:

a mezzanine tray comprising a clamping mechanism; and

mezzanine mounting brackets disposed within the computer chassis and configured to engage with the mezzanine tray when the mezzanine tray is mounted thereon,

wherein the clamping mechanism is configured to clamp the mezzanine tray against the mezzanine mounting brackets such that the mezzanine tray is locked in place on the mezzanine mounting brackets,

wherein the mezzanine tray comprises insertion alignment members, and

wherein each of the mezzanine mounting brackets comprises:

an engaging portion configured to engage with the insertion alignment members; and

a clamping portion configured to be clamped by the clamping mechanism,

wherein the mezzanine mounting brackets further comprise elastomer inserts disposed at an interface between the clamping mechanism of the mezzanine tray and the clamping portions of the mezzanine mounting brackets, and

wherein the clamping mechanism of the mezzanine tray is configured to clamp the elastomer inserts against the clamping portions, such that the mezzanine tray is locked in place on the mezzanine mounting brackets when the clamping mechanism is fully engaged.

2. The multi-stage mezzanine board mounting assembly according to claim 1 , wherein the clamping mechanism of the mezzanine tray comprises a pair of rotatable clamping levers.

3. The multi-stage mezzanine board mounting assembly according to claim 2 , wherein each of the rotatable clamping levers comprises:

cam portions attached to opposing side walls of the mezzanine tray; and

a handle portion connecting the cam portions.

4. The multi-stage mezzanine board mounting assembly according to claim 3 , wherein the insertion alignment members of the mezzanine tray are disposed on the opposing side walls of the mezzanine tray between the cam portions of the rotatable clamping levers.

5. The multi-stage mezzanine board mounting assembly according to claim 4 , wherein the cam portions of the rotatable clamping levers are configured to clamp the elastomer inserts against the clamping portions of the mezzanine mounting brackets, such that the mezzanine tray is locked in place on the mezzanine mounting brackets when the rotatable clamping levers are fully engaged.

6. The multi-stage mezzanine board mounting assembly according to claim 1 , wherein

a guide rail is formed on the engaging portion of the mezzanine mounting brackets to guide the insertion alignment members.

7. The multi-stage mezzanine board mounting assembly according to claim 1 , wherein the insertion alignment members have a substantially flat trapezoidal shape.

8. The multi-stage mezzanine board mounting assembly according to claim 1 , wherein the mezzanine mounting brackets are installed on side walls of the computer server chassis.

9. A multi-stage mezzanine board mounting assembly within a computer chassis, comprising:

a mezzanine tray comprising:

a pair of rotatable clamping levers, each comprising cam portions attached to opposing side walls of the mezzanine tray and a handle portion connecting the cam portions; and

an insertion alignment member disposed on each of the opposing side walls of the mezzanine tray between the cam portions of the rotatable clamping levers; and

mezzanine mounting brackets disposed within the computer chassis, comprising:

engaging portions configured to engage with the insertion alignment members when the mezzanine tray is mounted thereon;

clamping portions configured to be clamped by the cam portions of the mezzanine tray; and

elastomer inserts disposed at an interface between the clamping portions of the mezzanine mounting brackets and the cam portions of the rotatable clamping levers,

wherein the cam portions of the rotatable clamping levers are configured to clamp the elastomer inserts against the clamping portions of the mezzanine mounting brackets such that the mezzanine tray is locked in place on the mezzanine mounting brackets when the rotatable clamping levers are fully engaged.

10. The multi-stage mezzanine board mounting assembly according to claim 9 , wherein

guide rails formed on the engaging portions of the mezzanine mounting brackets to guide the insertion alignment members.

11. The multi-stage mezzanine board mounting assembly according to claim 9 , wherein the insertion alignment members have a substantially flat trapezoidal shape.

12. The multi-stage mezzanine board mounting assembly according to claim 9 , wherein the mezzanine mounting brackets are installed on side walls of the computer server chassis.

13. A method of installing a mezzanine board onto a base circuit board within a computer chassis, the method comprising:

disposing mezzanine mounting brackets within the computer chassis;

mounting a mezzanine tray onto the mezzanine mounting brackets such that insertion alignment members of the mezzanine tray engage with an engaging portion of the mezzanine mounting brackets;

rotating rotatable clamping levers such that the mezzanine tray is locked in place on the mezzanine mounting brackets when the rotatable clamping levers are fully engaged; and

disposing elastomer inserts in the mezzanine mounting brackets such that the elastomer inserts get clamped against the clamping portions of the mezzanine mounting brackets such that the mezzanine tray is locked in place on the mezzanine mounting brackets when the rotatable clamping levers are fully engaged.