Robot system

A robot system comprising:

• a plurality of arms operated to perform a preprogramed work;
• a housing configured to form an exterior of one of the plurality of arms, wherein the housing stores a motor driven to move said one of the plurality of arms;
• a metal bracket disposed in the housing between the motor and an outer circumference of the housing;
• and
• a capacitive proximate sensor operable to sense an object nearby;
• wherein the capacitive proximate sensor comprises:
• a shield member located adjacent to the metal bracket on a side of the metal bracket opposite to the motor;
• a detection electrode located adjacent to the shield member on a side of the shield member opposite to the metal bracket;
• a circuit substrate configured to transmit and receive a signal to and from the detection electrode;
• and
• a signal cable including a signal line configured to transmit the signal between the circuit substrate and the detection electrode, wherein the signal cable further includes a cylindrical shield line formed to surround the signal line to transmit a signal between the circuit substrate and the shield member, and wherein the signal cable further includes an insulating coating coated to surround the shield line.