Terminal unit for electric motor

摘要

A compact terminal unit for an electric motor capable of switching over windings with ease and improving automatic of assembling and inspection process of the electric motor. It has a terminal base to be fixed at the position of a through hole formed on a housing of the electric motor. Leads of the windings of a motor are connected with cylindrical presser portions of lead connectors by caulking. Conducting portions of the lead connectors are to be inserted into mounting portions of the terminal base. The power cables are connected with conducting portions by screws engaged with the conducting portions so that the power cables are electrically connected with leads of the windings. Since the leads are connected to the lead connectors with their orientations, vertically under the power cable connection terminals and not to be present in a space in a terminal box, an ample space for attachment o the power cables to the power cable connection terminals is secured. The switchover of windings from a delta connection to start connection and vice versa can be easily performed. Since positions and orientation of the leads are fixed at mounting portions of the terminal base, the inspection of the windings can be easily performed. <IMAGE>