CARRIAGE ASSEMBLY AND STORAGE MEDIUM DRIVING DEVICE

According to one embodiment, a carriage assembly includes a carriage block body, a carriage arm, a coil, a pair of support arms, and a frame body. The carriage block body is rotatably connected to a spindle. The carriage arm extends forward from the front of the carriage block body. The coil is located behind the carriage block body, and defines a linear region extending along a reference straight line extending radially from the center of the spindle. The support arms extend in parallel to the linear region from a back surface of the carriage block body. The frame body is made of a resin material, and fills between the coil and the support arms to couple the coil and the support arms. The support arms extend more outside than the external end of the linear region of the coil in the radial direction.