Authors:
Ming-Lei Lin, Jui-Chieh Guo, Chenming Hsu, Fiona Hung
Abstract:
This disclosure proposes a mechanism to provide a two step releasing latch for preventing accidental module ejection from the cage, the mechanism can detect module location to constrain the moving distance of the latch.
Background:
When developing the front access SSD module, a mechanism was needed for removing the SSD module from the SSD cage. One of the possible solutions was using a spring to eject the SSD module out off the SSD cage, however, the SSD could fly out and be damaged if the elastic force of the spring is large. Therefore, a two step releasing latch mechanism was developed.
Description:
The module (ie SSD) is installed in a carrier. The carrier is installed into the cage. In the cage, there is a spring, latch and a detection bar. When the carrier is installed in the cage, the latch constrains the movement of the carrier and prevents it from moving out from the cage. Also, the carrier pushes out the detection bar so the detection bar constrains the moving distance of the latch.
When the user pushes the latch, the spring ejects the carrier out of the cage, however, because the detection bar detects the location of the carrier, it constrains the latch to moving a shorter distance (1st step), at this distance, the latch still holds the module in the cage. The detection bar then detects the carrier is half out of the cage, so it releases the moving distance of the latch (2nd step). So the user can push the latch further for fully releasing the carrier from the cage.
TGCS Reference 2966
