| 摘要 |
An adjusting mechanism 41 of fine control ratio in a fine controlling joystick of the present invention offers an adjusting member 47 suspending a fixed ball 50 from a neck thereof and supporting slidably in a vertical direction in a displacement board 43, a movable ball 57 having a long groove 57a provided in a vertical direction at outer surface thereof and suspending an operation handle 60 outside and a cylindrical inner wall contacting the outer surface of the fixed ball, a movable ball holder 52 rotatively supported at a hole of larger diameter of a displacement board 45, rotatively supporting the movable ball 57 in the through hole of the cylinder and projecting an engagement pin 56 to engage into a long groove 57a of the movable ball 57, and transmitting arrangement 55, 61, and 64 to convert rotation of the movable ball holder 52 into fine vertical movement of the vertical direction displacement board 65. Three ways dimensional displacement in three coordinates fine control including displacement from horizontal plane to vertical direction can be performed by one operation handle by changing a distance between the center of the fixed ball 50 and the center of the movable ball 57.
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