| 摘要 |
PURPOSE: To eliminate the need to fix an inner pole and a valve surrounding wall to an intermediate ring by inserting a brazing filler metal disc constituted of hard solder and a non-magnetic circular ring-shaped intermediate ring into a ring hole, and placing it on a hole bottom part. CONSTITUTION: In a magnet body 80, constituted of an inner pole 1, a valve surrounding wall 8, and a bottom part 69, a ring hole 70 is integrally formed through the magnet body 80 in an axial direction, so as to be concentrically extended to a valve longitudinal axial 5. Then, a circular ring-shaped brazing filler metal 72 is placed on a hole bottom part 73 of the ring hole 70 of the magnet body 80, and a non-magnetic circular intermediate ring 10 is arranged on the brazing filler metal 72. Then, the intermediate ring 10 and the magnet body 80 are heated and soldered in this state, and then a bottom part 69 of the magnet body 80 is clipped, so that the inner pole 1 and the valve surrounding the wall 8 can be separated spatially. Thus, a magnetic circuit such as an injection valve can be formed at relatively low cost and with a simple method. |
