Patent ID: 8531063
Filing Date: 2013-09-10
Classification: H02K

Abstract:
1. A linear vibrator comprising: a housing having a bracket and a case coupled to the bracket to form a receiving space; a spring coupled to an inner face of the case; a vibration unit having a magnet, the magnet being coupled to the spring; a coil, which has a hollow can-shape, disposed over the bracket for vibrating the vibration unit by using a magnetic field generated from the magnet and a magnet field generated from the coil; and a substrate electrically connected to the coil and the substrate interposed between the coil and the bracket, the substrate having an air venting portion being communicated with an inner space of the coil and outside of the coil, wherein the air venting portion has a groove shape, a first end portion of the air venting portion is formed at the inner space of the coil, the air venting portion passes air through a lower end portion of the coil, and a second end portion that is opposite to the first end portion of the air venting portion, wherein the second end portion of the air venting portion extends outside an outer circumference of the coil in a radial direction of the coil.