| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem that miniaturization of a displacement sensor is hardly compatible with the saving of operating force. SOLUTION: An external cylinder body side detent hole part 11 is formed on an external cylinder body 7 of a linear bush 4, and a ball guide side detent hole part 15 is formed on a ball guide 9, respectively. A pin interfitting hole part 79 for interfitting a detent pin 51A is formed on a moving shaft 51. A movable part rotation prevention means is constituted by inserting the detent pin 51A into the external cylinder body side detent hole part 11 and the ball guide side detent hole part 15 movably in the moving direction of a movable part 50, and inserting the detent pin 51A into the pin interfitting hole part 79.
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