Patent attributes
A link mechanism includes a first link connected with a first joint, a first motor driving the first link to rotate, a second link connected with a second joint, a second motor driving the second link to rotate, and a power transmission mechanism. The power transmission mechanism is configured as capable of switching between a connected state with connection with which power of the first motor and the second motor can be transmitted between the first joint and the second joint and a disconnected state in which the connection is removed. In the case where the power transmission mechanism is in the connected state, the first joint and the second joint rotate so that an angular velocity of the first joint and an angular velocity of the second joint are proportional to each other.
