Chain block toy facilitating connection and preventing abrasion by being elastically operated via left and right rolling

A chain block toy for facilitating connection and preventing abrasion by being elastically operated via left and right rolling, the chain block toy comprising a plurality of assembly blocks that are interconnectable, each of the plurality of blocks comprising:

• a male coupling part;
• and
• a female coupling part including:
• a pair of vertical supports that are arranged vertically,
• a partition formed between the vertical supports, the partition including:
• first and second ends,
• a first open groove formed at the first end of the partition and extending toward the second end of the partition,
• a second open groove formed at the second end of the partition and extending toward the first end of the partition, and
• a plurality of coupling spaces defined by the partition and the vertical supports,
• wherein, when the male coupling part is coupled to or decoupled from a female coupling part of another assembly block, or when the male coupling part is rotated in a coupled state, the partition is rolled left and right such that,
• the first open groove is widened at the first end and the second open groove is narrowed at the second end, which facilitates the coupling or decoupling of the male coupling part from the female coupling part of the other assembly block, and
• the female coupling part prevents the male coupling part from being abraded by reducing friction when the male coupling part is rotated.