| 摘要 |
PURPOSE:To simplify the control of a tensile force of a tensile object and to cause obtaining of an excellent positioning property, by a method wherein a tensioner device, consisting of a permanent magnet and magnetic material, is installed between a gyro-case and a gimbal device. CONSTITUTION:A supporter 8 which has a hole at its center is securely located outside a bearing 14' of an inner pitch shaft of a gimbal 4. One end of a tensile object 3 is connected to an inner pitch shaft 13' and the other to a screw member 6 loosely inserted into a perforation 9. A nut 7 is screwed in the screw member 6, and this adjusts a position in the directions of the shafts 13 and 13' of a gyro case 2 to the gimbal 4. Meanwhile, a tensioner device 5, consisting of a permanent magnet and a magnetic material, is placed outside an inner pitch shaft 13 at an opposite side. This prevents the movement in the directions of the shafts 13 and 13' of the gyro-case 2 through a displacement spring constant which is almost equal to the tensile object 3 even if an external acceleration is exerted on the gyro-case 2. Thereby an excellent positioning property can be obtained. |
