Patent ID: 8011488
Filing Date: 2011-09-06
Classification: F16D

Abstract:
1. A rotating coil type electromagnetic clutch comprising: an armature which has a frictional surface and is rotated/driven by a driving source; a field core which has a frictional surface facing the frictional surface of said armature and rotates integrally upon making the frictional surfaces frictionally engage with each other; a rotating shaft on which said field core is axially mounted; a brush holder mounted in a mounting recess portion formed in said field core; a coil bobbin which is buried in said field core, around which an exciting coil is wound, and which is formed to have an inner diameter larger than an outer diameter of the mounting recess portion; coil terminals to which a winding start portion and winding fish end portion of the exciting coil are electrically connected and which protrude from said coil bobbin in an axial direction of said rotating shaft; slip rings including power feeding terminals which feed power to the exciting coil; brushes which are mounted on said brush holder and electrically come into slidable contact with said slip rings; extending portions which are integrally formed on said brushes and are formed to extend in a direction opposite to the center of said field core and bend in a direction away from said coil bobbin; and brush terminals which are formed on end portions of said extending portions so as to be oriented in the axial direction of said rotating shaft and electrically are in contact with said coil terminals along the axial direction of said rotating shaft.