US Patent 10166464 Puzzle

In order to provide a puzzle that allows young children to enjoy puzzle games easily and pleasantly, a puzzle 1 has a housing main body 10 and a puzzle shaft 40 provided in the housing main body 10. The puzzle shaft 40 includes a shaft and a piece 30. The shaft is provided with rotation of the shaft centers fixed. A plurality of pieces that is rotatably provided around the shaft center of the shaft along a shaft center direction of the shaft via the shaft and a ratchet mechanism, and puzzle patterns are provided to outer periphery of the shaft around the shaft center. The ratchet mechanism is made up of ratchet teeth formed on the outer periphery of the shaft and a ratchet pawl provided to the piece via an elastic portion.