| 摘要 |
PURPOSE:To reduce considerably a leak magnetic flux by connecting two magnetic circuits so that magnetization directions of respective magnets may be opposite to each other and respective magnetic gaps may be arranged in parallel. CONSTITUTION:Magnets 2 and 2' are fixed to the bottom face of pot-shaped yokes 1 and 1' so that magnetization directions may be arrows a and a' directions. Disc- shaped top plates 3 and 3' are fixed to the upper face of magnets 2 and 2', and ring magnetic gaps 4 and 4' are formed between the outside circumference face of top plates 3 and 3' and the inside circumference face of yokes 1 and 1'. These two magnetic circuits are provided with through hole 5 at the center, and two magnetic circuits are fixed by fixing pin 6 so that top plates 3 and 3' may be brought into contact with each other. As the result, the leak magnetic flux can be reduced considerably. |
