| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain electromagnetic equipment having a permanent magnet that can be separated in a magnetized state and, in addition, can be prevented from being broken or damaged at the time of taking out the magnet. <P>SOLUTION: This electromagnetic equipment has the permanent magnet 2 fixed by means of an adhesive 4 and a holder 5. The adhesive 4 contains a thermally expandable material which expands at a temperature of 50-200°C. The thermally expandable material can be selected from among sodium bicarbonate, ammonium carbonate, azodicarbonamide, p,p'-oxybis benzene sulfonyl hydrazide, etc. In addition, an acryl-based adhesive having a softening temperature of 50-200°C can be used as the adhesive 4, and a magnet having a high coercive force and containing neodymium can be used as the permanent magnet 2. <P>COPYRIGHT: (C)2003,JPO</p> |
