Housing assembly

A housing assembly, comprising:

• a first housing comprising:
• a first sidewall comprising a first sidewall outer surface and a first sidewall inner surface opposite to each other;
• at least two hook members, wherein each of the at least two hook members includes a bending portion and a buckle portion, the bending portion is formed by bending a portion of the first sidewall in a direction perpendicular to the first sidewall inner surface, the buckle portion is in connection with an end of the bending portion and comprises a first part and a second part, wherein the first part is in connection with the bending portion, the second part is extending from the first part in a direction parallel to the first sidewall outer surface, and the second part is misaligned with the bending portion, wherein the second parts of the buckle portions of the at least two hook members are extended toward opposite directions, respectively;
• a top plate in connection with a first side edge of the first sidewall opposite to the at least two hook members and perpendicular to the first sidewall inner surface;
• and
• a first fixing unit disposed on the top plate;
• and
• a second housing configured to assemble with the first housing and comprising:
• a bottom plate;
• a lateral plate extending from the bottom plate in a direction perpendicular to the bottom plate;
• at least two openings, wherein each of the at least two openings comprises a bottom plate opening and a lateral plate opening, the bottom plate opening penetrates through the bottom plate, the lateral plate opening penetrates through the lateral plate and is in communication with the bottom plate opening, wherein the width of the bottom plate opening is greater than the width of the lateral plate opening, and a blocking portion is formed on a misaligned position of the bottom plate opening and the lateral plate opening;
• a second sidewall connected to a side edge of the bottom plate opposite to the lateral plate;
• and
• a second fixing unit disposed on the second sidewall, and configured to align and assemble with the first fixing unit for securing;
• wherein each of the at least two hook members of the first housing penetrates through corresponding one of the bottom plate openings of the second housing, the bending portion is accommodated in the lateral plate opening, the second part of each of the at least two hook members is disposed corresponding to the blocking portion, and the first fixing unit and the second fixing unit are aligned and assembled to form a latched state.