| 摘要 |
<p>Brush-holder for electric motors provided with a wear signalling device, comprising a metal body for guiding the brush, pressure-spring means which act on the brush by means of an oscillating pressure finger, and electrically insulated contact means designed to be energized when the oscillating pressure finger reaches the end of its travel for activation of a signalling circuit. According to the invention, said pressure finger is mounted in an oscillating manner on an insulating support separate from said brush guide body and stably fixed on the latter. Moreover, said electrically insulated contact means comprise, on the one hand, a resilient metal strip, projecting from the said guide body, for direct contact with the oscillating pressure finger and, on the other hand, a conducting cross-member mounted on said insulating support and electrically connected to the said oscillating pressure finger by means of said spring means.</p> |
