Constant-voltage direct-current step-down silicon chain device with protective structure

The utility model relates to the technical field of electrical apparatus elements, in particular to a constant-voltage direct-current step-down silicon chain device with a protection structure, which can enhance the protection property of a step-down silicon chain, prevent the step-down silicon chain from being artificially or naturally damaged and ensure the normal use of the function of the step-down silicon chain. Comprising a step-down silicon chain, a plurality of groups of diodes, a protective shell, a first hinge, a protective cover, a first lock shaft, a lock rod and two groups of bus contact pieces, the input end of the step-down silicon chain is provided with a plurality of groups of contacts, each group of diodes is provided with a contact piece, the diodes are connected with the step-down silicon chain through cooperation of the plurality of groups of contact pieces and the plurality of groups of contacts, and the protective shell is internally provided with a first placing groove. The pressure re