Abstract: A latching structure for a cooking device and a cooking device having the same are provided. The cooking device has a casing and a door body. The latching structure has a flipping member, a first restoring member, a restricting member and a second restoring member. The first restoring member provides the flipping member with a first restoring force for allowing the flipping member to rotate towards a non-triggered position. The restricting member is movably disposed on the casing between a first position and a second position. The second restoring member is configured to provide the restricting member with a second restoring force for allowing the restricting member to move towards the first position. The latching structure is configured, such that a restoring speed at which the flipping member rotates towards the non-triggered position is greater than a restoring speed at which the restricting member moves towards the first position.

Abstract: The disclosure belongs to a technical field related to metamaterials and discloses a multi-scale three-dimensional pentamode metamaterial and an additive manufacturing method thereof. The multi-scale three-dimensional pentamode metamaterial has a body centered cubic (BCC) structure and includes a plurality of rods and a plurality of node structures. Two ends of each of the rods are connected to the node structures. Each of the rods has a cylindrical shape and is provided with a biconical through hole. From one end of the rod towards the other end of the rod, a diameter of the biconical through hole gradually decreases and then gradually increases. A chamber is formed inside each of the node structures, the biconical through hole communicates with the chamber, and the chamber is filled with a lattice structure.

Abstract: The disclosure belongs to a technical field related to metamaterials and discloses a multi-scale three-dimensional pentamode metamaterial and an additive manufacturing method thereof. The multi-scale three-dimensional pentamode metamaterial has a body centered cubic (BCC) structure and includes a plurality of rods and a plurality of node structures. Two ends of each of the rods are connected to the node structures. Each of the rods has a cylindrical shape and is provided with a biconical through hole. From one end of the rod towards the other end of the rod, a diameter of the biconical through hole gradually decreases and then gradually increases. A chamber is formed inside each of the node structures, the biconical through hole communicates with the chamber, and the chamber is filled with a lattice structure.