| 摘要 |
PURPOSE:To obtain an object to be detected having strong rust preventing property and small deviation in the radial direction, by providing the object to be detected with a rotary shaft tying section on the basis of the outside circumference using a metal which can be processed by diecasting, etc., and at the same time, by covering a rotary magnetic body. CONSTITUTION:An object to be detected, which is a magnetic gear body 1 being diecast of aluminum, is fixed onto a motor shaft 3 to prepare a rotary magnetic body detecting device. The method of forming a rotary shaft tying section on the basis of outside circumference of the object to be detected is able to eliminate a pant of deviation, which is corresponding to the deviation of a hub 2, whereby the deviation in the radial direction is minimized and the gap between the object of detection and a detecting body is also minimized, and as a result, the output characteristic is improved. And, by covering the surface of the object of detection by diecasting aluminum, etc., the rustpreventing performance is remarkably improved. And therefore, it is possible, by doing so, to obtain an object to be detected rust preventing propety and a small deviation. |
