Brush module for a rotary table

A brush module for a rotary table comprising:

• a housing including a holding groove, the holding groove including a first surface, a second surface opposite the first surface, a bottom surface located between the first surface and the second surface, and an opening opposite the bottom surface;
• a brush unit including a brush, a conductive wire, and an elastic member, wherein the brush is disposed in the holding groove and includes a first side facing the first surface, a second side facing the second surface, an end face facing the bottom surface, and a contact surface opposite the end face;
• the conductive wire is inserted in the housing, the elastic member is sleeved on the conductive wire and pressed between the bottom surface and the end face to provide a force for pushing the brush towards the opening;
• a first pushing unit disposed in the housing and including a first elastic element and a first pushing member, wherein the first pushing member presses against the first side of the brush and provides a first pushing force from the first surface towards the second surface;
• and
• a second pushing unit disposed in the housing and including a second elastic element and a second pushing member, wherein the second pushing member presses against the second side of the brush and provides a second pushing force from the second surface to the first surface;
• wherein the first side of the brush includes a first guiding groove which is pressed by the first pushing member, and the second side of the brush includes a second guiding groove which is pressed by the second pushing member.