Patent ID: 6888433
Filing Date: 2005-05-03
Classification: H04R,Y10T

Abstract:
1. A method of manufacturing a repulsion magnetic circuit, which has at least a first magnetic circuit block constituted of a yoke, a first magnet adhesive bonded to the yoke, and a plate adhesive bonded on to a top face of the first magnet and a second magnetic circuit block constituted of a second magnet adhesive bonded on to a top face of the plate such that its side and a side of the first magnet having identical polarity therewith confront each other, the method comprising the steps of: attaching the first magnetic circuit block constituted of the first magnet magnetized in advance to a lower jig; attaching the second magnetic circuit block constituted of the second magnet magnetized in advance to an upper jig; applying an adhesive to at least one of faces to be bonded together of the first magnetic circuit block attached to the lower jig and the second magnetic circuit block attached to the upper jig; detecting coming into abutment of the first magnetic circuit block with the second magnetic circuit block when at least one of the first magnetic circuit block attached to the lower jig and the second magnetic circuit block attached to the upper jig is shifted toward the other; and applying a predetermined pressing force.