Patent ID: 8175747

Claim:
A joinable robot component comprising: a circuit board; a lower case accommodating the circuit board; a middle housing located above the lower case and the circuit board and having a slot-like opening formed at a first end thereof, a receivable connector formed at a second end thereof, and a first hole formed above the opening; a gear shaft inserted into and upwardly extended from the first hole, vertically passing through the opening, and having a laterally protruding connector located in the opening and an upper end acting as a rotatable connector; a motor located between the circuit board and the middle housing and electrically coupled to the circuit board; a gear assembly located over the middle housing and transmitting a turning force generated by the motor to the gear shaft; an upper case located above the middle housing, covering the gear shaft and the gear assembly, and having a second hole formed above the first hole, the second hole receiving the upper end of the gear shaft; and at least one joint member having at least one of a pentagonal receivable hole, a rectangular insertional piece, and a spanner type receivable slot, wherein each joint member is engaged with one of the rotatable connector, the laterally protruding connector, and the receivable connector.