Device and method for assembly of radial magnet voice coil...

Details Device and method for assembly of radial magnet voice coil... Device and method for assembly of radial magnet voice coil...

H - Electricity

02

K

H02K 15/02 (2006.01) H02K 15/03 (2006.01) H04R 9/02 (2006.01) H04R 31/00 (2006.01) H02K 33/18 (2006.01)

Patent

CA 2172727

A method of assembling an annular magnet (16) and a pole piece (14) in a chamber (22) of a cyclindrical core (12) at a predetermined height is disclosed. The magnet assembly tool (50) has a firstportion (52) with a diameter of approximately the diameter of thechamber less the width of the annular magnet and a second portion (54) with a diameter of approximately the width of the chamber. Therefore a gap (64) is formed between the outer wall (24) of the chamber and the first portion of the magnet assembly tool when the tool is inserted in the chamber. The annular magnet is positioned into the gap, and an adhesive is applied to adhere the magnet to the outer wall of the chamber. The pole piece is assembled using a pole piece assembly tool (70).

Procédé utilisé pour assembler un aimant annulaire (16) et un élément polaire (14), à une hauteur prédéterminée, dans une chambre (22) d'un noyau cylindrique (12). L'instrument (50) employé pour assembler l'aimant présente une première partie (52) dont le diamètere correspond approximativement à celui de la chambre moins la largeur de l'aimant annulaire, et une deuxième partie (54) dont lediamètre correspond approximativement à la largeur de la chambre. Lorsqu'on introduit l'instrument dans la chambre, un espace libre (64) se forme entre la paroi externe (24) de la chambre et la premièrepartie de l'instrument employé pour assembler l'aimant. On positionne l'aimant annulaire dans cet espace et on applique un adhésifpour coller ledit aimant sur la paroi externe de la chambre. On assemble l'élément polaire à l'aide d'un instrument approprié (70).

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