An automatic locking keychain includes a curved plate, a pin shaft at one end of the curved plate, a middle seat rotatably arranged on the pin shaft, a fitting block on the middle seat, and a locking mechanism on a side of the curved plate close to the pin shaft. An end side surface of the fitting block away from the middle seat is attached to another end of the curved plate. The locking mechanism is configured to limit a rotation of the middle seat, and includes a limiting hole at an end of the curved plate close to the pin shaft, a sliding rod sliding inside the limiting hole, and a locking shaft at an end of the sliding rod close to the pin shaft. A locking hole is arranged on the middle seat. A spring is provided between the sliding rod and the limiting hole.

An automatic locking keychain includes a curved plate, a pin shaft at one end of the curved plate, a middle seat rotatably arranged on the pin shaft, a fitting block on the middle seat, and a locking mechanism on a side of the curved plate close to the pin shaft. An end side surface of the fitting block away from the middle seat is attached to another end of the curved plate. The locking mechanism is configured to limit a rotation of the middle seat, and includes a limiting hole at an end of the curved plate close to the pin shaft, a sliding rod sliding inside the limiting hole, and a locking shaft at an end of the sliding rod close to the pin shaft. A locking hole is arranged on the middle seat. A spring is provided between the sliding rod and the limiting hole.

The present disclosure relates to a bobblehead key chain. In one aspect, the bobblehead key chain includes a head having a top opening on an upper surface of the head, a bottom opening on a lower surface of the head, and a mounting feature located within an interior space of the head. The bobblehead key chain also includes a pivot mechanism disposed through the interior space of the head, where the pivot mechanism includes a spine that extends through the top opening of the head and an axle that extends from the spine. The axle is retained by the mounting feature. The bobblehead key chain may also include a connection feature at the top of the pivot mechanism to allow key rings, keys, or other objects to be attached to the bobblehead key chain. The bobblehead key chain may also include a body connected to the pivot mechanism.