Carbon brush holder capable of improving protectiveness of capacitor

The utility model discloses a carbon brush holder capable of improving capacitor protectiveness, which comprises a carbon brush holder body, a capacitor and a piezoresistor, the capacitor and the piezoresistor are arranged on the carbon brush holder body, a piezoresistor mounting seat is arranged on the carbon brush holder body, and a piezoresistor pin hole is arranged at the bottom of the piezoresistor mounting seat. Two capacitor pin holes are symmetrically formed in the left side and the right side of the piezoresistor installation base, the two capacitors are installed on the left side and the right side of the piezoresistor respectively, two capacitor pin clamping bases are arranged at the positions, on the piezoresistor installation base, of the peripheral edge of the carbon brush holder body, one pin of each capacitor is inserted into the corresponding capacitor pin hole, and the other pin of each capacitor is inserted into the corresponding capacitor pin clamping base. And the other pin is fixed on th