US Patent 12023800 Robot hand, robot arm, and robot

A robot hand includes a first finger, a third finger disposed to face the first finger, a second finger disposed side by side with the third finger, a first finger connection portion to which the first finger is connected rotatably, a second finger connection portion to which the second finger is connected rotatably and to which the third finger is connected rotatably, a hand base to which the first finger connection portion and the second finger connection portion are connected, and a finger moving portion that moves at least one of the first finger connection portion and the second finger connection portion with respect to the hand base such that a distance between the first finger and the third finger increases or decreases.