| 摘要 |
PURPOSE:To simplify formation and assembling, by holding a magnetic spherical body inside a recessed part, which is formed on a cap part of a plate spring, with a holding means having a magnet so that a frame for a color selection means can be mounted/dismounted on/off a panel part. CONSTITUTION:When a frame 4 is mounted/dismounted on/off a panel part 1, a yoke 61 of a holding means 63 is put on a cap part 21 and its magnet 62 is located in a position opposite to a recessed part 23, and then a magnetic spherical body 52 located inside the recessed part 23 is held. Arrangement of the holding means 63 forms a closed magnetic path, the loop from an end of the magnet 62-the spherical body 52-the yoke 61-the magnet 62, making the spherical body 52 to be attracted by the magnet 62 through the cap part 21 and held inside the recessed part 23. Therefore, the spherical body 52 can be engaged/disengaged with the recessed part 53, according to engagement/ disengagement of the cap part 21 with the stud pin 15.
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