| 摘要 |
<P>PROBLEM TO BE SOLVED: To allow an operating element 3 to be pushed and pulled independent of a guide tolerance on the side of the operating element 3, solve the nonconformity of a side load being applied on a screw shaft 401 and a rotary nut due to a pushing and pulling load, and solve the problem of drop of thrust due to tight screw engagement and malfunction when driving the operating element 3 back and forth with the screw shaft 401 of a linear motor 4. <P>SOLUTION: A fitting tolerance of a guide 203 vertically guiding the operating element 3 is set to be higher than a shaft center assembling tolerance of the screw shaft 401 of the linear motor 4. A tip part of the screw shaft 401 is connected to the operating element 3 with a loosely fixing means 5 absorbing the center deviation or rotational run-out of the screw shaft due to the shaft center assembling tolerance of the linear motor 4. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
