| 摘要 |
PURPOSE: To prevent lost pressure to a Hall sensor even if a Hall sensor holder is expanded by heat, and to prevent a crack at the soldered part of the lead pin of the sensor to a board by providing a shock absorber mechanism at the bottom of the containing hole of the holder for containing the sensor. CONSTITUTION: One or a plurality of protrusions 1c are provided at the bottom of the containing hole 1a of a Hall sensor holder 1 for containing a Hall sensor 11, and so formed as to be easily deformed by an external pressure. The bottom of a Hall sensor body 11a is brought into contact with the protrusion 1c to fix the position of the sensor 11, and the magnetism generated from the magnet 13 of a rotor is effectively detected. Thus, if the holder 1 is expanded by the temperature rise at the time of operating the motor or heat when a stator is molded, the protrusions 1c are deformed, and a solder crack is prevented at the soldered part of the lead pin 11b of the sensor 11 to a board 10. |
