This museum showcase comprises a bearing frame and fixed and/or openable walls supported by the bearing frame. The bearing frame comprises a platform that includes joints connected to horizontal beams. The fixed and/or openable walls of the showcase are supported only by the joints. The weight of the walls is supported by the joints, whereas the horizontal beams are not subjected to significant stresses. It is thus possible to design the showcase in a particularly simple and therefore quick manner, choosing the lengths of each beam according to the dimensions of the showcase and leaving the support of the weights to just the joints.

A connecting device for interconnecting a vertical tube and a plurality of display cabinets for carrying display modules includes first and second connecting frames and a fastening unit. The first connecting frame is for mounting the display cabinets thereon, abuts against a front outer surface of the vertical tube facing the display cabinets. The second connecting frame abuts against a rear outer surface of the vertical tube facing away from the first connecting frame. The fastening unit includes first fastening sets fastening the first and second connecting frames together so as to clamp the vertical tube therebetween. The second fastening sets fasten securely the display cabinets to the first connecting frame.

This museum showcase comprises a bearing frame and fixed and/or openable walls supported by the bearing frame. The bearing frame comprises a platform that includes joints connected to horizontal beams. The fixed and/or openable walls of the showcase are supported only by the joints. The weight of the walls is supported by the joints, whereas the horizontal beams are not subjected to significant stresses. It is thus possible to design the showcase in a particularly simple and therefore quick manner, choosing the lengths of each beam according to the dimensions of the showcase and leaving the support of the weights to just the joints.

The modular panel 20 interlocking and reinforcing mechanism for building enclosures pertains to assembling boxes 21 without using accessories. My mechanism joins modular panels 20 by interlocking between grooves 22 and grooves 22 and rods 18 attached to panel edges, thus creating the box 21. The embodiment of my mechanism joins modular panels 20 by interlocking both grooves 22 attached by living hinges 24 on the panel edges, thus creating the box 21. The living hinges 24 allow all the grooves 22 to turn forty five degrees at the corners. Upon interlocking both grooves 22, it completes the ninety degree dihedral angle transition from one panel 20 to another for corners. Another embodiment of present invention is to assemble a box 21 in expanded sizes by interlocking modular panels 20 flat or angled without extra accessories. An additional embodiment of my mechanism includes insertion of rods 18 attached to the panel edges into grooves 22 attached to another panel to form an interlocked rod and groove 60 on box 21. One type of the interlocking groove 22 mentioned above is a rolled sheet type with a smaller span at the opening than parallel spans at main sections in the groove in a cross-sectional view. The interlocked rod and groove 60 attached to panels on living hinges 24 can also serve as posts to take loads above them for a heavy-duty box.

A connector for insertion into two connectable items consists of two parts with inter-engaging features, for instance, a spigot and socket, which may be latched together under the force applied by a pivoting latch arm in one part with a tensionable clamping arm engaging the other part to clamp the two parts together when the latch arm is homed.