| 摘要 |
The invention relates to a layered carbon brush (10) having a carbon body (11) which has two carbon layers separated from each other by an insulation layer and arranged in combination and which form a contact surface in a contact section (18) for connecting to a commutator (23) of an electrical motor with the end faces thereof opposite a connecting conductor side of the carbon body, wherein the contact section has a contact cross-section which has a width a, axis-parallel to a commutator axis (28), and a height t, tangential to the circumference of the commutator, wherein at a height t of greater than or equal to 4.5 mm and smaller than 5.5 mm, the width a equals at least 2.8 times the height t, or wherein at a width a of greater than or equal to 12.5 mm and smaller than 13.5 mm, the height t equals 0.25 times to 0.35 times the width a, and at a width a of greater than or equal to 13.5 mm and smaller than or equal to 15 mm, the height t equals 0.23 times to 0.32 times the width a. |
