Magnetic circuit structure of the alnico magnetic type speaker which utilizes the neodymium magnet

摘要

(57) Abstract Title of device Neodymium magnetic type cone die suTweet magnetic circuit structure of the car Objective As for this device, magnetic circuit of cone die speakerBeing something regarding structure, especially, alnico magnetic type supiImproving the yoke part of ka, the neodymium magnet interestThat business is lighter than the existing speaker thin it is possibleAnd others the entry approximately 15 times neojimumagunetsu which augmentsThe magnetic time of the alnico magnetic type speaker which utilizes toIt is something regarding path structure. Constitution In speaker frame 1 diaphragm 2 and yokeThe alnico which attaches 3, at the same time inside yoke 3 it interposes locksWith the magnetic type magnet and voice coil 5 the diaphragm2 in the cone die speaker which it tries to vibrate,On internal three-dimensional base section 7 median of yoke 3 thin tabular neojimumagunetsuto 4N fixing in place of alnico magnetIn doing, the median surface 7 of base section 7 '' making extend aboveVibrating interval V of the ri and voice coil 5 was expanded.