Patent ID: 11945071

Abstract:
A polishing brush (1) includes a rod-shaped member (2) and a grinding element bundle (4) formed of a plurality of wire-shaped grinding elements (3). The rod-shaped member (2) has a holding hole (6) at a front portion (2a) to hold the grinding element bundle (4). The holding hole (6) has a bottom face (7) and a sleeve-shaped peripheral wall (8) extending from the bottom face (7) in an inclination direction (S). The grinding element bundle (4) has a seated portion (4a) seated in the holding hole (6) and a protruding portion (4b) protruding from an opening (6a) of the holding hole (6) in the inclination direction (S). The tip end of the protruding portion (4b) is located on the outside of the rod-shaped member (2) when viewed from the axis (L0) direction.