CPC H05K 5/0213 (2013.01) [H05K 7/1488 (2013.01)] | 2 Claims |
1. A thermally insulated, rigid cabinet, comprising:
a top cover;
four side walls having a tri-layer structure; and
a base having a tri-layer structure;
wherein the tri-layer structure includes an inner honeycomb panel, a middle strengthening assembly, and an outer wall panel; the middle strengthening assembly is formed by a plurality of horizontal tension rods and a plurality of vertical tension rods intersecting; the top cover, the side walls, and the base are connected with and fixed to one another by an aluminum extrusion fixing assembly; the aluminum extrusion fixing assembly comprises a first aluminum extrusion tube, a second aluminum extrusion tube, and a third aluminum extrusion tube; the first aluminum extrusion tube is connected in parallel side-to-side to the second aluminum extrusion tube, the first aluminum extrusion tube is connected in perpendicular side-to-side to the third aluminum extrusion tube; the first aluminum extrusion tube is provided with a first, long groove located on a first sidewall thereof; a sidewall of the first long groove extends inwards to form a protruding portion; a leak-proof groove is provided on a bottom side within the first long groove.
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