Warning device for automobile alternator replacement

A warning device for an automobile alternator having a shaft on which at least one slip ring is installed with at least one brush installed in a brush holder, comprising:

• a wear limit line setting a critical operating condition of the alternator;
• at least one conducting sensor installed in the brush and including a conductor installed so that a leading end thereof is located below the wear limit line at a predetermined depth and an insulator case of a cylindrical shape which insulates the conductor;
• and
• a warning unit connected to the conducting sensor, the warning unit including a battery in circuit with the conductor, and configured to generate a warning signal when the conductor of the conducting sensor comes in contact with the slip ring due to wear of the brush.

A warning device for an automobile alternator replacement having a shaft on which at least one slip ring is installed, with at least one brush installed in a brush holder, comprising:

• the brush having a wear limit line setting a critical operating condition of the alternator;
• at least one case installed on the brush, the case including an elastic body in an upper portion thereof and a movable member pushing the brush by the aid of the elastic body;
• at least one push switch closeable by contact with a head of the movable member, and installed in the case so that an initial setting distance from an initial position of the head to a position of the head at position where the push switch is contacted and turned on by the head is set so as to be smaller than a length from a leading end of the brush to the wear limit line of the brush by a predetermined amount;
• a ground wire connected to one end of the push switch;
• and
• a warning unit connected to the push switch at one end thereof, the warning unit including a battery in circuit with the conductor, and configured to generate a warning signal when the head of the movable member pushes and turns on the push switch due to wear of the brush.