Protective housing and cover mechanism thereof

A protective housing, comprising:

• a housing defining an opening and a restriction groove thereon, and the restriction groove connected with the opening;
• and
• a cover mechanism coupled to the housing;
• the cover mechanism comprising:
• a cover body, comprising
• an outer cover;
• and
• a supporting plate detachably coupled to the outer cover and facing the opening, wherein the supporting plate includes at least one L-shaped guiding hole;
• a latching member comprising
• a handle located on a side of the outer cover away from the supporting plate;
• a latch located between the outer cover and the supporting plate, and coupled to the handle;
• a mechanical button positioned adjacent to the latch;
• and
• at least one connecting rod rotatably coupled to the latch, one end of the at least one connecting rod is rotatably coupled to the latch, and the other end of the at least one connecting rod has an abutting portion;
• wherein the latch defines a positioning groove for accommodating the mechanical button, the mechanical button locates between the outer cover and the supporting plate, and part of the mechanical button exposes out from the outer cover, a rotation of the handle causes the latch to be received in the restriction groove, the cover body covers the opening, the mechanical button receives in the positioning groove to lock the latch, a rotation of the latch causes one of the at least one abutting portion of the at least one connecting rod to slide in one of the at least one guiding hole;
• and
• a gate coupled to the cover body and rotatably coupled to the housing, the gate defines at least one receiving groove, each abutting portion slidably receives into one of the at least one receiving groove to abut the gate.