Patent ID: 9030058
Filing Date: 2015-05-12
Classification: H02K

Abstract:
1. A vibration generator, comprising: a housing comprising a case having a peripheral wall surface, the housing having a lower inside surface; a coil arranged to generate magnetic fields, the coil facing the peripheral wall surface; a vibrating body including a magnet and a weight, the magnet arranged at a radially outward of the weight such that the magnet is opposed to the coil, the vibrating body arranged to be vibrated in a thrust direction by an interaction of magnetic fields generated from the magnet and magnetic fields generated from the coil, the vibrating body having a lower surface; a spring arranged to support the vibrating body only at one thrust-direction side of the vibrating body, the spring having a first end and a second end, the first end being radially closer than the second end, the first end being fixed to the lower surface of the vibrating body, the second end being fixed to the lower inside surface of the housing, the second end being located radially inside the coil; and a shaft extending in the thrust direction through the vibrating body, the shaft arranged to allow the vibrating body to slide along the shaft in the thrust direction.